diff --git a/.config/dotnet-tools.json b/.config/dotnet-tools.json
index b6cba414baa..5cf9775974e 100644
--- a/.config/dotnet-tools.json
+++ b/.config/dotnet-tools.json
@@ -1,48 +1,62 @@
 {
+  "version": 1,
   "isRoot": true,
   "tools": {
     "dotnet-counters": {
+      "version": "8.0.547301",
       "commands": [
         "dotnet-counters"
       ],
-      "version": "8.0.547301"
+      "rollForward": true
     },
     "dotnet-dump": {
+      "version": "8.0.547301",
       "commands": [
         "dotnet-dump"
       ],
-      "version": "8.0.547301"
+      "rollForward": true
     },
     "dotnet-gcdump": {
+      "version": "8.0.547301",
       "commands": [
         "dotnet-gcdump"
       ],
-      "version": "8.0.547301"
+      "rollForward": true
     },
     "dotnet-sos": {
+      "version": "8.0.547301",
       "commands": [
         "dotnet-sos"
       ],
-      "version": "8.0.547301"
+      "rollForward": true
     },
     "dotnet-symbol": {
+      "version": "8.0.547301",
       "commands": [
         "dotnet-symbol"
       ],
-      "version": "8.0.547301"
+      "rollForward": true
     },
     "dotnet-trace": {
+      "version": "8.0.547301",
       "commands": [
         "dotnet-trace"
       ],
-      "version": "8.0.547301"
+      "rollForward": true
+    },
+    "dotnet-ilverify": {
+      "version": "9.0.0-rc.2.24473.5",
+      "commands": [
+        "ilverify"
+      ],
+      "rollForward": true
     },
     "fantomas": {
+      "version": "6.2.3",
       "commands": [
         "fantomas"
       ],
-      "version": "6.2.3"
+      "rollForward": true
     }
-  },
-  "version": 1
-}
+  }
+}
\ No newline at end of file
diff --git a/azure-pipelines-PR.yml b/azure-pipelines-PR.yml
index 9a5c59441e2..7ca3aae0bb3 100644
--- a/azure-pipelines-PR.yml
+++ b/azure-pipelines-PR.yml
@@ -808,3 +808,23 @@ stages:
               artifactName: 'Trim Test Logs Attempt $(System.JobAttempt) Logs $(_kind)'
             continueOnError: true
             condition: always()
+        - job: ILVerify
+          pool:
+            name: $(DncEngPublicBuildPool)
+            demands: ImageOverride -equals $(WindowsMachineQueueName)
+          steps:
+          - checkout: self
+            clean: true
+          - task: UseDotNet@2
+            displayName: install SDK
+            inputs:
+              packageType: sdk
+              useGlobalJson: true
+              includePreviewVersions: true
+              workingDirectory: $(Build.SourcesDirectory)
+              installationPath: $(Agent.ToolsDirectory)/dotnet
+          - script: dotnet tool restore
+            displayName: Restore dotnet tools
+          - pwsh: .\eng\ilverify.ps1
+            displayName: Run ILVerify
+            workingDirectory: $(Build.SourcesDirectory)
diff --git a/eng/ilverify.ps1 b/eng/ilverify.ps1
new file mode 100644
index 00000000000..4f80a579f41
--- /dev/null
+++ b/eng/ilverify.ps1
@@ -0,0 +1,150 @@
+# Cross-platform PowerShell script to verify the integrity of the produced dlls, using dotnet-ilverify.
+
+# Set build script based on which OS we're running on - Windows (build.cmd), Linux or macOS (build.sh)
+
+Write-Host "Checking whether running on Windows: $IsWindows"
+
+[string] $repo_path = (Get-Item -Path $PSScriptRoot).Parent
+
+Write-Host "Repository path: $repo_path"
+
+[string] $script = if ($IsWindows) { Join-Path $repo_path "build.cmd" } else { Join-Path $repo_path "build.sh" }
+
+# Set configurations to build
+[string[]] $configurations = @("Debug", "Release")
+
+# The following are not passing ilverify checks, so we ignore them for now
+[string[]] $ignore_errors = @() # @("StackUnexpected", "UnmanagedPointer", "StackByRef", "ReturnPtrToStack", "ExpectedNumericType", "StackUnderflow")
+
+[string] $default_tfm = "netstandard2.0"
+
+[string] $artifacts_bin_path = Join-Path (Join-Path $repo_path "artifacts") "bin"
+
+# List projects to verify, with TFMs
+$projects = @{
+    "FSharp.Core" = @($default_tfm, "netstandard2.1")
+    "FSharp.Compiler.Service" = @($default_tfm, "net9.0")
+}
+
+# Run build script for each configuration (NOTE: We don't build Proto)
+foreach ($configuration in $configurations) {
+    Write-Host "Building $configuration configuration..."
+    & $script -c $configuration
+    if ($LASTEXITCODE -ne 0 -And $LASTEXITCODE -ne '') {
+        Write-Host "Build failed for $configuration configuration (last exit code: $LASTEXITCODE)."
+        exit 1
+    }
+}
+
+# Check if ilverify is installed and available from the tool list (using `dotnet tool list -g `), and install it globally if not found.
+Write-Host "Checking if dotnet-ilverify is installed..."
+$dotnet_ilverify = dotnet tool list -g | Select-String -SimpleMatch -CaseSensitive "dotnet-ilverify"
+
+if ([string]::IsNullOrWhiteSpace($dotnet_ilverify)) {
+    Write-Host " dotnet-ilverify is not installed. Installing..."
+    dotnet tool install dotnet-ilverify -g --prerelease
+} else {
+    Write-Host " dotnet-ilverify is installed:`n  $dotnet_ilverify"
+}
+
+# Get the path to latest currently installed runtime
+[string[]] $runtimes = @(dotnet --list-runtimes | Select-String -SimpleMatch -CaseSensitive -List "Microsoft.NETCore.App")
+if ($runtimes -eq "") {
+    Write-Host "No runtime found. Exiting..."
+    exit 1
+} else {
+    Write-Host "Found the following runtimes: "
+    foreach ($runtime in $runtimes) {
+        Write-Host " $runtime"
+    }
+}
+
+# Selecting the most recent runtime (e.g. last one in the list)
+[string] $runtime = $runtimes[-1]
+Write-Host " Selected runtime:`n  $runtime"
+
+# Parse path to runtime from something like "Microsoft.NETCore.App 5.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App\5.0.0]" to "C:\Program Files\dotnet\shared\Microsoft.NETCore.App\5.0.0"
+[string] $runtime_path = $runtime -replace 'Microsoft.NETCore.App (?<RuntimeVersion>.+) \[(?<RuntimePath>.+)\]', '${RuntimePath}/${RuntimeVersion}'
+Write-Host " Using the following path to runtime:`n  $runtime_path"
+
+# Check whether path exists, if it doesn't something unexpected happens and needs investigation
+if (-not (Test-Path $runtime_path)) {
+    Write-Host "Path to runtime not found. Exiting..."
+    exit 1
+}
+
+# For every artifact, every configuration and TFM, run a dotnet-ilverify with references from discovered runtime directory:
+foreach ($project in $projects.Keys) {
+    foreach ($tfm in $projects[$project]) {
+        foreach ($configuration in $configurations) {
+            $dll_path = "$artifacts_bin_path/$project/$configuration/$tfm/$project.dll"
+            if (-not (Test-Path $dll_path)) {
+                Write-Host "DLL not found: $dll_path"
+                exit 1
+            }
+            Write-Host "Verifying $dll_path..."
+            # If there are any errors to ignore in the array, ignore them with `-g` flag
+            $ignore_errors_string =
+                if ($ignore_errors.Length -gt 0) {
+                    $ignore_errors | ForEach-Object {
+                        "-g $_"
+                    }
+                } else { "" }
+            $ilverify_cmd = "dotnet ilverify --statistics --sanity-checks --tokens $dll_path -r '$runtime_path/*.dll' -r '$artifacts_bin_path/$project/$configuration/$tfm/FSharp.Core.dll' $ignore_errors_string"
+            Write-Host "Running ilverify command:`n $ilverify_cmd"
+
+            # Append output to output array
+            $ilverify_output = @(Invoke-Expression "& $ilverify_cmd" -ErrorAction SilentlyContinue)
+
+            # Normalize output, get rid of paths in log like
+            #  [IL]: Error [StackUnexpected]: [/Users/u/code/fsharp3/artifacts/bin/FSharp.Compiler.Service/Release/net9.0/FSharp.Core.dll : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x00000081][found Byte] Unexpected type on the stack.
+            # This is a quick and dirty way to do it, but it works for now.
+            $ilverify_output = $ilverify_output | ForEach-Object {
+                if ($_ -match "\[IL\]: Error \[") {
+                    $parts = $_ -split " "
+                    "$($parts[0]) $($parts[1]) $($parts[2]) $($parts[4..$parts.Length])"
+                } elseif ($_ -match "Error\(s\) Verifying") {
+                    # do nothing
+                } else {
+                    $_
+                }
+            }
+
+            $baseline_file = Join-Path $repo_path "eng" "ilverify_${project}_${configuration}_${tfm}.bsl"
+
+            $baseline_actual_file = [System.IO.Path]::ChangeExtension($baseline_file, 'bsl.actual')
+
+            if (-not (Test-Path $baseline_file)) {
+                Write-Host "Baseline file not found: $baseline_file"
+                $ilverify_output | Set-Content $baseline_actual_file
+                exit 1
+            }
+
+            # Read baseline file into string array
+            [string[]] $baseline = Get-Content $baseline_file
+
+            if ($baseline.Length -eq 0) {
+                Write-Host "Baseline file is empty: $baseline_file"
+                $ilverify_output | Set-Content $baseline_actual_file
+                exit 1
+            }
+
+            # Compare contents of both arrays, error if they're not equal
+
+            $cmp = Compare-Object $ilverify_output $baseline
+
+            if (-not $cmp) {
+                Write-Host "ILverify output matches baseline."
+            } else {
+                Write-Host "ILverify output does not match baseline, differences:"
+
+                $cmp | Format-Table | Out-String | Write-Host
+                $ilverify_output | Set-Content $baseline_actual_file
+
+                exit 1
+            }
+        }
+    }
+}
+
+exit 0
diff --git a/eng/ilverify_FSharp.Compiler.Service_Debug_net9.0.bsl b/eng/ilverify_FSharp.Compiler.Service_Debug_net9.0.bsl
new file mode 100644
index 00000000000..6ff63cb645d
--- /dev/null
+++ b/eng/ilverify_FSharp.Compiler.Service_Debug_net9.0.bsl
@@ -0,0 +1,98 @@
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.HashMultiMap`2::.ctor(int32, [S.P.CoreLib]System.Collections.Generic.IEqualityComparer`1<!0>, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x00000060][found ref 'object'][expected ref '[S.P.CoreLib]System.Collections.Generic.IDictionary`2<T0,Microsoft.FSharp.Collections.FSharpList`1<T1>>'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.HashMultiMap`2::.ctor(int32, [S.P.CoreLib]System.Collections.Generic.IEqualityComparer`1<!0>, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x00000035][found ref 'object'][expected ref '[S.P.CoreLib]System.Collections.Generic.IDictionary`2<T0,T1>'] Unexpected type on the stack.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.SafeUnmanagedMemoryStream::.ctor(uint8*, int64, object)][offset 0x00000001] Unmanaged pointers are not a verifiable type.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.SafeUnmanagedMemoryStream::.ctor(uint8*, int64, int64, [S.P.CoreLib]System.IO.FileAccess, object)][offset 0x00000001] Unmanaged pointers are not a verifiable type.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.RawByteMemory::.ctor(uint8*, int32, object)][offset 0x00000009] Unmanaged pointers are not a verifiable type.
+[IL]: Error [StackByRef]: : FSharp.Compiler.IO.RawByteMemory::get_Item(int32)][offset 0x0000001E][found Native Int] Expected ByRef on the stack.
+[IL]: Error [StackByRef]: : FSharp.Compiler.IO.RawByteMemory::set_Item(int32, uint8)][offset 0x00000025][found Native Int] Expected ByRef on the stack.
+[IL]: Error [ReturnPtrToStack]: : Internal.Utilities.Text.Lexing.LexBuffer`1::get_LexemeView()][offset 0x00000019] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Text.Lexing.UnicodeTables::scanUntilSentinel([FSharp.Compiler.Service]Internal.Utilities.Text.Lexing.LexBuffer`1<char>, int32)][offset 0x00000079][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Xml.XmlDoc::processLines([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.FxResolver::getTfmNumber(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.FxResolver::tryGetRunningTfm()][offset 0x00000011][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.DependencyManager.AssemblyResolveHandler::.ctor([FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.DependencyManager.AssemblyResolutionProbe>)][offset 0x0000003E][found ref 'object'][expected ref '[S.P.CoreLib]System.IDisposable'] Unexpected type on the stack.
+[IL]: Error [ReturnPtrToStack]: : FSharp.Compiler.CodeAnalysis.ItemKeyStore::ReadKeyString([System.Reflection.Metadata]System.Reflection.Metadata.BlobReader&)][offset 0x00000026] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [ReturnPtrToStack]: : FSharp.Compiler.CodeAnalysis.ItemKeyStore::ReadFirstKeyString()][offset 0x00000070] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.ItemKeyStoreBuilder::writeRange([FSharp.Compiler.Service]FSharp.Compiler.Text.Range)][offset 0x00000011][found address of '[FSharp.Compiler.Service]FSharp.Compiler.Text.Range'][expected Native Int] Unexpected type on the stack.
+[IL]: Error [ExpectedNumericType]: : FSharp.Compiler.EditorServices.SemanticClassificationKeyStoreBuilder::WriteAll([FSharp.Compiler.Service]FSharp.Compiler.EditorServices.SemanticClassificationItem[])][offset 0x0000001D][found address of '[FSharp.Compiler.Service]FSharp.Compiler.EditorServices.SemanticClassificationItem'] Expected numeric type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.FSharpChecker::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, int32, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`2<string,System.DateTime>,Microsoft.FSharp.Core.FSharpOption`1<System.Tuple`3<object,native int,int32>>>, bool, bool, bool, bool, [FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+ParallelReferenceResolution, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Control.FSharpAsync`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.Text.ISourceText>>>>, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x000000A2][found ref 'object'][expected ref '[FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.IBackgroundCompiler'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x0000005C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x00000065][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x00000082][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x0000008B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+MagicAssemblyResolution::ResolveAssemblyCore([FSharp.Compiler.Service]Internal.Utilities.Library.CompilationThreadToken, [FSharp.Compiler.Service]FSharp.Compiler.Text.Range, [FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, [FSharp.Compiler.Service]FSharp.Compiler.CompilerImports+TcImports, [FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiDynamicCompiler, [FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiConsoleOutput, string)][offset 0x00000015][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+clo@3508-780::Invoke([S.P.CoreLib]System.Tuple`3<char[],int32,int32>)][offset 0x000001E5][found Char] Unexpected type on the stack.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.Interactive.Shell+Utilities+pointerToNativeInt@110::Invoke(object)][offset 0x00000007] Unmanaged pointers are not a verifiable type.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharpCheckerResults+dataTipOfReferences@2205::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000084][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000032][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x0000003B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000082][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x0000008B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000094][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.StaticLinking+TypeForwarding::followTypeForwardForILTypeRef([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILTypeRef)][offset 0x00000010][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getCompilerOption([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<int32>)][offset 0x000000E6][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::AddPathMapping([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+parseOption@269::Invoke(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+getOptionArgList@307::Invoke([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, string)][offset 0x00000035][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+getOptionArgList@307::Invoke([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, string)][offset 0x0000003E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+getSwitch@325::Invoke(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+attempt@373::Invoke([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.CompilerOptions+CompilerOption>)][offset 0x00000E9F][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.ParseAndCheckInputs+Pipe #1 stage #1 at line 1866@1866::Invoke(int32)][offset 0x00000030][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.ParseAndCheckInputs+Pipe #1 stage #1 at line 1866@1866::Invoke(int32)][offset 0x00000039][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerConfig+TcConfig::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, bool)][offset 0x0000062B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerConfig+TcConfig::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, bool)][offset 0x00000634][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.PatternMatchCompilation::isProblematicClause([FSharp.Compiler.Service]FSharp.Compiler.PatternMatchCompilation+MatchClause)][offset 0x00000065][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.PatternMatchCompilation::.cctor()][offset 0x00000015][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.TypeProviders::ValidateExpectedName([FSharp.Compiler.Service]FSharp.Compiler.Text.Range, string[], string, [FSharp.Compiler.Service]FSharp.Compiler.Tainted`1<FSharp.Compiler.TypeProviders+ProvidedType>)][offset 0x000000AD][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Lexhelp::stringBufferAsString([FSharp.Compiler.Service]FSharp.Compiler.IO.ByteBuffer)][offset 0x00000099][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Syntax.PrettyNaming::SplitNamesForILPath(string)][offset 0x00000057][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Syntax.PrettyNaming::SplitNamesForILPath(string)][offset 0x00000060][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.Syntax.PrettyNaming::.cctor()][offset 0x00001220][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.Syntax.PrettyNaming::.cctor()][offset 0x00001229][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryWriter::writeILMetadataAndCode(bool, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILVersionInfo, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILGlobals, bool, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILAttribute>, [S.P.CoreLib]System.Collections.Generic.IEnumerable`1<FSharp.Compiler.AbstractIL.IL+ILSourceDocument>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILModuleDef, int32, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.AbstractIL.IL+ILAssemblyRef,FSharp.Compiler.AbstractIL.IL+ILAssemblyRef>)][offset 0x0000063F][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryWriter+bigness@3406::Invoke(int32)][offset 0x00000007][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILPdbWriter+PortablePdbGenerator::serializeDocumentName(string)][offset 0x00000090][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILPdbWriter+pushShadowedLocals@959::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000232][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadUntaggedIdx([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.BinaryConstants+TableName, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32&)][offset 0x0000000D][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::openMetadataReader(string, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+BinaryFile, int32, [S.P.CoreLib]System.Tuple`8<uint16,System.Tuple`2<int32,int32>,bool,bool,bool,bool,bool,System.Tuple`5<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILPlatform>,bool,int32,int32,int32>>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+PEReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+PEReader>, bool)][offset 0x00000799][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+rowKindSize@4422::Invoke([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+RowKind)][offset 0x00000128][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseILVersion(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseILVersion(string)][offset 0x00000021][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.DiagnosticsLogger::.cctor()][offset 0x000000CD][found Char] Unexpected type on the stack.
+[IL]: Error [CallVirtOnValueType]: : FSharp.Compiler.Text.RangeModule+comparer@543::System.Collections.Generic.IEqualityComparer<FSharp.Compiler.Text.Range>.GetHashCode([FSharp.Compiler.Service]FSharp.Compiler.Text.Range)][offset 0x00000002] Callvirt on a value type method.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.PathMapModule::applyDir([FSharp.Compiler.Service]Internal.Utilities.PathMap, string)][offset 0x00000037][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.PathMapModule::applyDir([FSharp.Compiler.Service]Internal.Utilities.PathMap, string)][offset 0x00000043][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000000A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x00000013][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000001C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x00000025][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000002E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IO.FileSystemUtils::trimQuotes(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IO.FileSystemUtils::trimQuotes(string)][offset 0x00000014][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Library.String::lowerCaseFirstChar(string)][offset 0x0000003F][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Library.Array+loop@276-4::Invoke(int32)][offset 0x00000012][found Byte] Unexpected type on the stack.
+Types found: 23164
+Types verified: 23164
+Methods found: 88100
+Methods verified: 88100
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x000000A0][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000029][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Partition([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Pipe #2 input at line 2241@2245-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000030][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Pipe #2 input at line 2571@2575-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000022][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x00000020][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000029][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,bool>, string)][offset 0x00000075][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.Operators::castToString(!!0)][offset 0x00000001][found value 'T'][expected ref 'string'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives::retype(!!0)][offset 0x00000001][found value 'T'][expected value 'TResult'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x0000001C][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x00000023][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::castclassPrim(object)][offset 0x00000006][found ref 'T'][expected value 'T'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::notnullPrim(!!0)][offset 0x00000002][found Nullobjref 'NullReference'][expected value 'T'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::iscastPrim(object)][offset 0x00000006][found ref 'T'][expected value 'T'] Unexpected type on the stack.
+Types found: 2963
+Types verified: 2963
+Methods found: 11107
+Methods verified: 11107
diff --git a/eng/ilverify_FSharp.Compiler.Service_Debug_netstandard2.0.bsl b/eng/ilverify_FSharp.Compiler.Service_Debug_netstandard2.0.bsl
new file mode 100644
index 00000000000..0a9d1ca33f5
--- /dev/null
+++ b/eng/ilverify_FSharp.Compiler.Service_Debug_netstandard2.0.bsl
@@ -0,0 +1,123 @@
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.HashMultiMap`2::.ctor(int32, [S.P.CoreLib]System.Collections.Generic.IEqualityComparer`1<!0>, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x00000060][found ref 'object'][expected ref '[S.P.CoreLib]System.Collections.Generic.IDictionary`2<T0,Microsoft.FSharp.Collections.FSharpList`1<T1>>'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.HashMultiMap`2::.ctor(int32, [S.P.CoreLib]System.Collections.Generic.IEqualityComparer`1<!0>, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x00000035][found ref 'object'][expected ref '[S.P.CoreLib]System.Collections.Generic.IDictionary`2<T0,T1>'] Unexpected type on the stack.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.SafeUnmanagedMemoryStream::.ctor(uint8*, int64, object)][offset 0x00000001] Unmanaged pointers are not a verifiable type.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.SafeUnmanagedMemoryStream::.ctor(uint8*, int64, int64, [S.P.CoreLib]System.IO.FileAccess, object)][offset 0x00000001] Unmanaged pointers are not a verifiable type.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.RawByteMemory::.ctor(uint8*, int32, object)][offset 0x00000009] Unmanaged pointers are not a verifiable type.
+[IL]: Error [StackByRef]: : FSharp.Compiler.IO.RawByteMemory::get_Item(int32)][offset 0x0000001E][found Native Int] Expected ByRef on the stack.
+[IL]: Error [StackByRef]: : FSharp.Compiler.IO.RawByteMemory::set_Item(int32, uint8)][offset 0x00000025][found Native Int] Expected ByRef on the stack.
+[IL]: Error [ReturnPtrToStack]: : Internal.Utilities.Text.Lexing.LexBuffer`1::get_LexemeView()][offset 0x00000019] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Text.Lexing.UnicodeTables::scanUntilSentinel([FSharp.Compiler.Service]Internal.Utilities.Text.Lexing.LexBuffer`1<char>, int32)][offset 0x00000079][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Xml.XmlDoc::processLines([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.FxResolver::getTfmNumber(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.FxResolver::tryGetRunningTfm()][offset 0x00000011][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.DependencyManager.AssemblyResolveHandler::.ctor([FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.DependencyManager.AssemblyResolutionProbe>)][offset 0x0000003E][found ref 'object'][expected ref '[S.P.CoreLib]System.IDisposable'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.DependencyManager.DependencyProvider::TryFindDependencyManagerInPath([S.P.CoreLib]System.Collections.Generic.IEnumerable`1<string>, string, [FSharp.Compiler.Service]FSharp.Compiler.DependencyManager.ResolvingErrorReport, string)][offset 0x00000061][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Symbols.FSharpEntity::TryGetFullDisplayName()][offset 0x00000035][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Symbols.FSharpEntity::TryGetFullCompiledName()][offset 0x00000035][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Symbols.FSharpMemberOrFunctionOrValue::TryGetFullCompiledOperatorNameIdents()][offset 0x0000008A][found Char] Unexpected type on the stack.
+[IL]: Error [ReturnPtrToStack]: : FSharp.Compiler.CodeAnalysis.ItemKeyStore::ReadKeyString([System.Reflection.Metadata]System.Reflection.Metadata.BlobReader&)][offset 0x00000026] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [ReturnPtrToStack]: : FSharp.Compiler.CodeAnalysis.ItemKeyStore::ReadFirstKeyString()][offset 0x00000070] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.ItemKeyStoreBuilder::writeRange([FSharp.Compiler.Service]FSharp.Compiler.Text.Range)][offset 0x00000011][found address of '[FSharp.Compiler.Service]FSharp.Compiler.Text.Range'][expected Native Int] Unexpected type on the stack.
+[IL]: Error [ExpectedNumericType]: : FSharp.Compiler.EditorServices.SemanticClassificationKeyStoreBuilder::WriteAll([FSharp.Compiler.Service]FSharp.Compiler.EditorServices.SemanticClassificationItem[])][offset 0x0000001D][found address of '[FSharp.Compiler.Service]FSharp.Compiler.EditorServices.SemanticClassificationItem'] Expected numeric type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.EditorServices.Parent::FormatEntityFullName([FSharp.Compiler.Service]FSharp.Compiler.Symbols.FSharpEntity)][offset 0x00000069][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.FSharpChecker::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, int32, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`2<string,System.DateTime>,Microsoft.FSharp.Core.FSharpOption`1<System.Tuple`3<object,native int,int32>>>, bool, bool, bool, bool, [FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+ParallelReferenceResolution, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Control.FSharpAsync`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.Text.ISourceText>>>>, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x000000A2][found ref 'object'][expected ref '[FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.IBackgroundCompiler'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.FSharpChecker::TokenizeFile(string)][offset 0x0000000D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x0000005C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x00000065][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x00000082][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x0000008B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+FsiStdinSyphon::GetLine(string, int32)][offset 0x00000039][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+MagicAssemblyResolution::ResolveAssemblyCore([FSharp.Compiler.Service]Internal.Utilities.Library.CompilationThreadToken, [FSharp.Compiler.Service]FSharp.Compiler.Text.Range, [FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, [FSharp.Compiler.Service]FSharp.Compiler.CompilerImports+TcImports, [FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiDynamicCompiler, [FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiConsoleOutput, string)][offset 0x00000015][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+clo@3508-780::Invoke([S.P.CoreLib]System.Tuple`3<char[],int32,int32>)][offset 0x000001E5][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+FsiInteractionProcessor::CompletionsForPartialLID([FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiDynamicCompilerState, string)][offset 0x0000001B][found Char] Unexpected type on the stack.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.Interactive.Shell+Utilities+pointerToNativeInt@110::Invoke(object)][offset 0x00000007] Unmanaged pointers are not a verifiable type.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharpCheckerResults+dataTipOfReferences@2205::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000084][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.EditorServices.AssemblyContent+traverseMemberFunctionAndValues@176::Invoke([FSharp.Compiler.Service]FSharp.Compiler.Symbols.FSharpMemberOrFunctionOrValue)][offset 0x00000059][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.EditorServices.AssemblyContent+traverseEntity@218::GenerateNext([S.P.CoreLib]System.Collections.Generic.IEnumerable`1<FSharp.Compiler.EditorServices.AssemblySymbol>&)][offset 0x000000DA][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.EditorServices.ParsedInput+visitor@1423-6::VisitExpr([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.Syntax.SyntaxNode>, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.Syntax.SynExpr,Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.EditorServices.CompletionContext>>, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.Syntax.SynExpr,Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.EditorServices.CompletionContext>>, [FSharp.Compiler.Service]FSharp.Compiler.Syntax.SynExpr)][offset 0x00000605][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000032][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x0000003B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000082][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x0000008B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-492::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000094][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Symbols+fullName@2490-1::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000015][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CreateILModule+MainModuleBuilder::ConvertProductVersionToILVersionInfo(string)][offset 0x00000011][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.StaticLinking+TypeForwarding::followTypeForwardForILTypeRef([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILTypeRef)][offset 0x00000010][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getCompilerOption([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<int32>)][offset 0x000000E6][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::AddPathMapping([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::subSystemVersionSwitch([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, string)][offset 0x00000030][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+parseOption@269::Invoke(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+getOptionArgList@307::Invoke([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, string)][offset 0x00000035][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+getOptionArgList@307::Invoke([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, string)][offset 0x0000003E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+getSwitch@325::Invoke(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+attempt@373::Invoke([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.CompilerOptions+CompilerOption>)][offset 0x00000E9F][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+processArg@333::Invoke([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>)][offset 0x0000004D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+ResponseFile+parseLine@239::Invoke(string)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.ParseAndCheckInputs+Pipe #1 stage #1 at line 1866@1866::Invoke(int32)][offset 0x00000030][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.ParseAndCheckInputs+Pipe #1 stage #1 at line 1866@1866::Invoke(int32)][offset 0x00000039][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerImports+line@560-1::Invoke(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerConfig+TcConfig::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, bool)][offset 0x0000062B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerConfig+TcConfig::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, bool)][offset 0x00000634][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.PatternMatchCompilation::isProblematicClause([FSharp.Compiler.Service]FSharp.Compiler.PatternMatchCompilation+MatchClause)][offset 0x00000065][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.PatternMatchCompilation::.cctor()][offset 0x00000015][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.NicePrint+TastDefinitionPrinting+meths@2092-3::Invoke([FSharp.Compiler.Service]FSharp.Compiler.Infos+MethInfo)][offset 0x000000BE][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.NicePrint+PrintUtilities::layoutXmlDoc([FSharp.Compiler.Service]FSharp.Compiler.TypedTreeOps+DisplayEnv, bool, [FSharp.Compiler.Service]FSharp.Compiler.Xml.XmlDoc, [FSharp.Compiler.Service]FSharp.Compiler.Text.Layout)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.TypeProviders::ValidateNamespaceName(string, [FSharp.Compiler.Service]FSharp.Compiler.Tainted`1<Microsoft.FSharp.Core.CompilerServices.ITypeProvider>, [FSharp.Compiler.Service]FSharp.Compiler.Text.Range, string)][offset 0x00000063][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.TypeProviders::ValidateExpectedName([FSharp.Compiler.Service]FSharp.Compiler.Text.Range, string[], string, [FSharp.Compiler.Service]FSharp.Compiler.Tainted`1<FSharp.Compiler.TypeProviders+ProvidedType>)][offset 0x000000AD][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Lexhelp::stringBufferAsString([FSharp.Compiler.Service]FSharp.Compiler.IO.ByteBuffer)][offset 0x00000099][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Syntax.PrettyNaming::SplitNamesForILPath(string)][offset 0x00000057][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Syntax.PrettyNaming::SplitNamesForILPath(string)][offset 0x00000060][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.Syntax.PrettyNaming::.cctor()][offset 0x00001220][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.Syntax.PrettyNaming::.cctor()][offset 0x00001229][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryWriter::writeILMetadataAndCode(bool, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILVersionInfo, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILGlobals, bool, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILAttribute>, [S.P.CoreLib]System.Collections.Generic.IEnumerable`1<FSharp.Compiler.AbstractIL.IL+ILSourceDocument>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILModuleDef, int32, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.AbstractIL.IL+ILAssemblyRef,FSharp.Compiler.AbstractIL.IL+ILAssemblyRef>)][offset 0x0000063F][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryWriter+bigness@3406::Invoke(int32)][offset 0x00000007][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILPdbWriter+PortablePdbGenerator::serializeDocumentName(string)][offset 0x00000090][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILPdbWriter+pushShadowedLocals@959::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000232][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadUntaggedIdx([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.BinaryConstants+TableName, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32&)][offset 0x0000000D][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::openMetadataReader(string, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+BinaryFile, int32, [S.P.CoreLib]System.Tuple`8<uint16,System.Tuple`2<int32,int32>,bool,bool,bool,bool,bool,System.Tuple`5<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILPlatform>,bool,int32,int32,int32>>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+PEReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+PEReader>, bool)][offset 0x00000799][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+rowKindSize@4422::Invoke([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+RowKind)][offset 0x00000128][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.NativeRes+VersionHelper::TryParse(string, bool, uint16, bool, [S.P.CoreLib]System.Version&)][offset 0x0000003D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseILVersion(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseILVersion(string)][offset 0x00000021][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL+parseNamed@5242::Invoke([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<System.Tuple`4<string,FSharp.Compiler.AbstractIL.IL+ILType,bool,FSharp.Compiler.AbstractIL.IL+ILAttribElem>>, int32, int32)][offset 0x00000087][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.Utils::shortPath(string)][offset 0x00000015][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.FSharpEnvironment+probePathForDotnetHost@321::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000028][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.SimulatedMSBuildReferenceResolver+Pipe #6 input at line 68@68::FSharp.Compiler.CodeAnalysis.ILegacyReferenceResolver.Resolve([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyResolutionEnvironment, [S.P.CoreLib]System.Tuple`2<string,string>[], string, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>, string, string, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>, string, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.Unit>, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<bool,Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.Unit>>>)][offset 0x0000034D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.DiagnosticsLogger::.cctor()][offset 0x000000CD][found Char] Unexpected type on the stack.
+[IL]: Error [CallVirtOnValueType]: : FSharp.Compiler.Text.RangeModule+comparer@543::System.Collections.Generic.IEqualityComparer<FSharp.Compiler.Text.Range>.GetHashCode([FSharp.Compiler.Service]FSharp.Compiler.Text.Range)][offset 0x00000002] Callvirt on a value type method.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.PathMapModule::applyDir([FSharp.Compiler.Service]Internal.Utilities.PathMap, string)][offset 0x00000037][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.PathMapModule::applyDir([FSharp.Compiler.Service]Internal.Utilities.PathMap, string)][offset 0x00000043][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000000A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x00000013][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000001C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x00000025][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000002E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IO.FileSystemUtils::trimQuotes(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IO.FileSystemUtils::trimQuotes(string)][offset 0x00000014][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Library.String::lowerCaseFirstChar(string)][offset 0x0000003F][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Library.Array+loop@276-4::Invoke(int32)][offset 0x00000012][found Byte] Unexpected type on the stack.
+Types found: 23171
+Types verified: 23171
+Methods found: 88115
+Methods verified: 88115
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x000000A0][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000029][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Partition([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Pipe #2 input at line 2241@2245-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000030][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Pipe #2 input at line 2571@2575-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000022][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x00000020][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000029][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,bool>, string)][offset 0x00000075][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.Operators::castToString(!!0)][offset 0x00000001][found value 'T'][expected ref 'string'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives::retype(!!0)][offset 0x00000001][found value 'T'][expected value 'TResult'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x0000001C][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x00000023][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::castclassPrim(object)][offset 0x00000006][found ref 'T'][expected value 'T'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::notnullPrim(!!0)][offset 0x00000002][found Nullobjref 'NullReference'][expected value 'T'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::iscastPrim(object)][offset 0x00000006][found ref 'T'][expected value 'T'] Unexpected type on the stack.
+Types found: 2954
+Types verified: 2954
+Methods found: 11088
+Methods verified: 11088
diff --git a/eng/ilverify_FSharp.Compiler.Service_Release_net9.0.bsl b/eng/ilverify_FSharp.Compiler.Service_Release_net9.0.bsl
new file mode 100644
index 00000000000..8900d342849
--- /dev/null
+++ b/eng/ilverify_FSharp.Compiler.Service_Release_net9.0.bsl
@@ -0,0 +1,119 @@
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.HashMultiMap`2::.ctor(int32, [S.P.CoreLib]System.Collections.Generic.IEqualityComparer`1<!0>, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x00000060][found ref 'object'][expected ref '[S.P.CoreLib]System.Collections.Generic.IDictionary`2<T0,Microsoft.FSharp.Collections.FSharpList`1<T1>>'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.HashMultiMap`2::.ctor(int32, [S.P.CoreLib]System.Collections.Generic.IEqualityComparer`1<!0>, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x00000035][found ref 'object'][expected ref '[S.P.CoreLib]System.Collections.Generic.IDictionary`2<T0,T1>'] Unexpected type on the stack.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.SafeUnmanagedMemoryStream::.ctor(uint8*, int64, object)][offset 0x00000001] Unmanaged pointers are not a verifiable type.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.SafeUnmanagedMemoryStream::.ctor(uint8*, int64, int64, [S.P.CoreLib]System.IO.FileAccess, object)][offset 0x00000001] Unmanaged pointers are not a verifiable type.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.RawByteMemory::.ctor(uint8*, int32, object)][offset 0x00000009] Unmanaged pointers are not a verifiable type.
+[IL]: Error [StackByRef]: : FSharp.Compiler.IO.RawByteMemory::get_Item(int32)][offset 0x0000001A][found Native Int] Expected ByRef on the stack.
+[IL]: Error [StackByRef]: : FSharp.Compiler.IO.RawByteMemory::set_Item(int32, uint8)][offset 0x0000001B][found Native Int] Expected ByRef on the stack.
+[IL]: Error [ReturnPtrToStack]: : Internal.Utilities.Text.Lexing.LexBuffer`1::get_LexemeView()][offset 0x00000017] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Text.Lexing.UnicodeTables::scanUntilSentinel([FSharp.Compiler.Service]Internal.Utilities.Text.Lexing.LexBuffer`1<char>, int32)][offset 0x0000008D][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Xml.XmlDoc::processLines([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>)][offset 0x0000002C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.FxResolver::getTfmNumber(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.FxResolver::tryGetRunningTfm()][offset 0x00000011][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.DependencyManager.AssemblyResolveHandler::.ctor([FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.DependencyManager.AssemblyResolutionProbe>)][offset 0x0000002B][found ref 'object'][expected ref '[S.P.CoreLib]System.IDisposable'] Unexpected type on the stack.
+[IL]: Error [ReturnPtrToStack]: : FSharp.Compiler.CodeAnalysis.ItemKeyStore::ReadKeyString([System.Reflection.Metadata]System.Reflection.Metadata.BlobReader&)][offset 0x00000023] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [ReturnPtrToStack]: : FSharp.Compiler.CodeAnalysis.ItemKeyStore::ReadFirstKeyString()][offset 0x00000064] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.ItemKeyStoreBuilder::writeRange([FSharp.Compiler.Service]FSharp.Compiler.Text.Range)][offset 0x00000017][found address of '[FSharp.Compiler.Service]FSharp.Compiler.Text.Range'][expected Native Int] Unexpected type on the stack.
+[IL]: Error [ExpectedNumericType]: : FSharp.Compiler.EditorServices.SemanticClassificationKeyStoreBuilder::WriteAll([FSharp.Compiler.Service]FSharp.Compiler.EditorServices.SemanticClassificationItem[])][offset 0x0000001C][found address of '[FSharp.Compiler.Service]FSharp.Compiler.EditorServices.SemanticClassificationItem'] Expected numeric type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.FSharpChecker::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, int32, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`2<string,System.DateTime>,Microsoft.FSharp.Core.FSharpOption`1<System.Tuple`3<object,native int,int32>>>, bool, bool, bool, bool, [FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+ParallelReferenceResolution, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Control.FSharpAsync`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.Text.ISourceText>>>>, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x000000A2][found ref 'object'][expected ref '[FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.IBackgroundCompiler'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x0000005C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x00000065][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x00000082][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x0000008B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+MagicAssemblyResolution::ResolveAssemblyCore([FSharp.Compiler.Service]Internal.Utilities.Library.CompilationThreadToken, [FSharp.Compiler.Service]FSharp.Compiler.Text.Range, [FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, [FSharp.Compiler.Service]FSharp.Compiler.CompilerImports+TcImports, [FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiDynamicCompiler, [FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiConsoleOutput, string)][offset 0x00000015][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+clo@3508-835::Invoke([S.P.CoreLib]System.Tuple`3<char[],int32,int32>)][offset 0x000001C7][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharpCheckerResults+GetReferenceResolutionStructuredToolTipText@2205::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000076][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000032][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x0000003B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000064][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x0000006D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000076][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Driver+ProcessCommandLineFlags@301-1::Invoke(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Driver+ProcessCommandLineFlags@301-1::Invoke(string)][offset 0x00000014][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.StaticLinking+TypeForwarding::followTypeForwardForILTypeRef([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILTypeRef)][offset 0x00000010][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getCompilerOption([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<int32>)][offset 0x000000A7][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::parseOption@266(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getOptionArgList@306([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, string)][offset 0x00000049][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getOptionArgList@306([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, string)][offset 0x00000052][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getSwitch@324(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::attempt@372([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.Unit>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.CompilerOptions+CompilerOptionBlock>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>, string, string, string, string, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.CompilerOptions+CompilerOption>)][offset 0x00000A99][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::AddPathMapping([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnderflow]: : FSharp.Compiler.CompilerOptions::DoWithColor([System.Console]System.ConsoleColor, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<Microsoft.FSharp.Core.Unit,!!0>)][offset 0x0000005E] Stack underflow.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.ParseAndCheckInputs+CheckMultipleInputsUsingGraphMode@1866::Invoke(int32)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.ParseAndCheckInputs+CheckMultipleInputsUsingGraphMode@1866::Invoke(int32)][offset 0x0000003A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerConfig+TcConfig::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, bool)][offset 0x0000059C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerConfig+TcConfig::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, bool)][offset 0x000005A5][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IlxGen::HashRangeSorted([S.P.CoreLib]System.Collections.Generic.IDictionary`2<!!0,System.Tuple`2<int32,!!1>>)][offset 0x00000011][found ref '[FSharp.Compiler.Service]FSharp.Compiler.IlxGen+HashRangeSorted@1850-1<T1>'][expected ref '[FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`2<int32,T0>,int32>'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IlxGen::HashRangeSorted([S.P.CoreLib]System.Collections.Generic.IDictionary`2<!!0,System.Tuple`2<int32,!!1>>)][offset 0x00000012][found ref '[FSharp.Compiler.Service]FSharp.Compiler.IlxGen+HashRangeSorted@1850<T1>'][expected ref '[FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`2<int32,T0>,T0>'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.PatternMatchCompilation::isProblematicClause([FSharp.Compiler.Service]FSharp.Compiler.PatternMatchCompilation+MatchClause)][offset 0x00000040][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.PatternMatchCompilation::.cctor()][offset 0x0000000B][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.TypeProviders::ValidateExpectedName([FSharp.Compiler.Service]FSharp.Compiler.Text.Range, string[], string, [FSharp.Compiler.Service]FSharp.Compiler.Tainted`1<FSharp.Compiler.TypeProviders+ProvidedType>)][offset 0x000000A8][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Lexhelp::stringBufferAsString([FSharp.Compiler.Service]FSharp.Compiler.IO.ByteBuffer)][offset 0x0000008E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Syntax.PrettyNaming::SplitNamesForILPath(string)][offset 0x0000004B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Syntax.PrettyNaming::SplitNamesForILPath(string)][offset 0x00000054][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.Syntax.PrettyNaming::.cctor()][offset 0x00001182][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.Syntax.PrettyNaming::.cctor()][offset 0x0000118B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryWriter::writeILMetadataAndCode(bool, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILVersionInfo, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILGlobals, bool, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILAttribute>, [S.P.CoreLib]System.Collections.Generic.IEnumerable`1<FSharp.Compiler.AbstractIL.IL+ILSourceDocument>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILModuleDef, int32, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.AbstractIL.IL+ILAssemblyRef,FSharp.Compiler.AbstractIL.IL+ILAssemblyRef>)][offset 0x00000B21][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryWriter::writeILMetadataAndCode(bool, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILVersionInfo, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILGlobals, bool, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILAttribute>, [S.P.CoreLib]System.Collections.Generic.IEnumerable`1<FSharp.Compiler.AbstractIL.IL+ILSourceDocument>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILModuleDef, int32, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.AbstractIL.IL+ILAssemblyRef,FSharp.Compiler.AbstractIL.IL+ILAssemblyRef>)][offset 0x000004E2][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILPdbWriter+PortablePdbGenerator::serializeDocumentName(string)][offset 0x00000071][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILPdbWriter+pushShadowedLocals@959::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x000001C0][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadTypeDefRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x00000080][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadTypeDefRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x000000A1][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadMethodRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000071][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadInterfaceIdx([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadClassLayoutRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000066][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadFieldLayoutRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000045][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadEventMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadEventMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000045][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadPropertyMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadPropertyMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000045][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadMethodSemanticsRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x00000040][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadMethodImplRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadImplMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000044][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadFieldRVARow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000045][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadNestedRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadNestedRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x00000058][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadGenericParamConstraintIdx([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::rowKindSize$cont@4423(bool, bool, bool, bool[], bool, bool, bool, bool, bool, bool, bool, bool, bool, bool, bool, bool, bool, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.AbstractIL.ILBinaryReader+RowElementKind>, [FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x000000E5][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::openMetadataReader(string, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+BinaryFile, int32, [S.P.CoreLib]System.Tuple`8<uint16,System.Tuple`2<int32,int32>,bool,bool,bool,bool,bool,System.Tuple`5<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILPlatform>,bool,int32,int32,int32>>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+PEReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+PEReader>, bool)][offset 0x000006BF][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadInterfaceImpls@2238-3::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadGenericParamConstraints@2303-2::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+enclIdx@2332-2::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadMethodImpls@3100-4::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadEvents@3180-3::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadProperties@3250-3::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseILVersion(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseILVersion(string)][offset 0x00000021][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.DiagnosticsLogger::.cctor()][offset 0x000000B6][found Char] Unexpected type on the stack.
+[IL]: Error [CallVirtOnValueType]: : FSharp.Compiler.Text.RangeModule+comparer@543::System.Collections.Generic.IEqualityComparer<FSharp.Compiler.Text.Range>.GetHashCode([FSharp.Compiler.Service]FSharp.Compiler.Text.Range)][offset 0x00000002] Callvirt on a value type method.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.PathMapModule::applyDir([FSharp.Compiler.Service]Internal.Utilities.PathMap, string)][offset 0x00000035][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.PathMapModule::applyDir([FSharp.Compiler.Service]Internal.Utilities.PathMap, string)][offset 0x00000041][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000000A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x00000013][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000001C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x00000025][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000002E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IO.FileSystemUtils::trimQuotes(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IO.FileSystemUtils::trimQuotes(string)][offset 0x00000014][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Library.String::lowerCaseFirstChar(string)][offset 0x0000003A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Library.Array::loop@275-3(bool[], int32)][offset 0x00000008][found Byte] Unexpected type on the stack.
+Types found: 19615
+Types verified: 19615
+Methods found: 81909
+Methods verified: 81909
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x00000081][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000029][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Partition([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Choose@2245-2::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000030][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+countAndCollectTrueItems@2575-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000022][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x0000001E][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x0000002D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000029][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,bool>, string)][offset 0x0000006C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x0000001C][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x00000023][found Short] Unexpected type on the stack.
+Types found: 2216
+Types verified: 2216
+Methods found: 9512
+Methods verified: 9512
diff --git a/eng/ilverify_FSharp.Compiler.Service_Release_netstandard2.0.bsl b/eng/ilverify_FSharp.Compiler.Service_Release_netstandard2.0.bsl
new file mode 100644
index 00000000000..e5b60e5c50a
--- /dev/null
+++ b/eng/ilverify_FSharp.Compiler.Service_Release_netstandard2.0.bsl
@@ -0,0 +1,145 @@
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.HashMultiMap`2::.ctor(int32, [S.P.CoreLib]System.Collections.Generic.IEqualityComparer`1<!0>, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x00000060][found ref 'object'][expected ref '[S.P.CoreLib]System.Collections.Generic.IDictionary`2<T0,Microsoft.FSharp.Collections.FSharpList`1<T1>>'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.HashMultiMap`2::.ctor(int32, [S.P.CoreLib]System.Collections.Generic.IEqualityComparer`1<!0>, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x00000035][found ref 'object'][expected ref '[S.P.CoreLib]System.Collections.Generic.IDictionary`2<T0,T1>'] Unexpected type on the stack.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.SafeUnmanagedMemoryStream::.ctor(uint8*, int64, object)][offset 0x00000001] Unmanaged pointers are not a verifiable type.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.SafeUnmanagedMemoryStream::.ctor(uint8*, int64, int64, [S.P.CoreLib]System.IO.FileAccess, object)][offset 0x00000001] Unmanaged pointers are not a verifiable type.
+[IL]: Error [UnmanagedPointer]: : FSharp.Compiler.IO.RawByteMemory::.ctor(uint8*, int32, object)][offset 0x00000009] Unmanaged pointers are not a verifiable type.
+[IL]: Error [StackByRef]: : FSharp.Compiler.IO.RawByteMemory::get_Item(int32)][offset 0x0000001A][found Native Int] Expected ByRef on the stack.
+[IL]: Error [StackByRef]: : FSharp.Compiler.IO.RawByteMemory::set_Item(int32, uint8)][offset 0x0000001B][found Native Int] Expected ByRef on the stack.
+[IL]: Error [ReturnPtrToStack]: : Internal.Utilities.Text.Lexing.LexBuffer`1::get_LexemeView()][offset 0x00000017] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Text.Lexing.UnicodeTables::scanUntilSentinel([FSharp.Compiler.Service]Internal.Utilities.Text.Lexing.LexBuffer`1<char>, int32)][offset 0x0000008D][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Xml.XmlDoc::processLines([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>)][offset 0x0000002C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.FxResolver::getTfmNumber(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.FxResolver::tryGetRunningTfm()][offset 0x00000011][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.DependencyManager.AssemblyResolveHandler::.ctor([FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.DependencyManager.AssemblyResolutionProbe>)][offset 0x0000002B][found ref 'object'][expected ref '[S.P.CoreLib]System.IDisposable'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.DependencyManager.DependencyProvider::TryFindDependencyManagerInPath([S.P.CoreLib]System.Collections.Generic.IEnumerable`1<string>, string, [FSharp.Compiler.Service]FSharp.Compiler.DependencyManager.ResolvingErrorReport, string)][offset 0x00000055][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Symbols.FSharpEntity::TryGetFullDisplayName()][offset 0x00000024][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Symbols.FSharpEntity::TryGetFullCompiledName()][offset 0x00000024][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Symbols.FSharpMemberOrFunctionOrValue::TryGetFullCompiledOperatorNameIdents()][offset 0x00000060][found Char] Unexpected type on the stack.
+[IL]: Error [ReturnPtrToStack]: : FSharp.Compiler.CodeAnalysis.ItemKeyStore::ReadKeyString([System.Reflection.Metadata]System.Reflection.Metadata.BlobReader&)][offset 0x00000023] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [ReturnPtrToStack]: : FSharp.Compiler.CodeAnalysis.ItemKeyStore::ReadFirstKeyString()][offset 0x00000064] Return type is ByRef, TypedReference, ArgHandle, or ArgIterator.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.ItemKeyStoreBuilder::writeRange([FSharp.Compiler.Service]FSharp.Compiler.Text.Range)][offset 0x00000017][found address of '[FSharp.Compiler.Service]FSharp.Compiler.Text.Range'][expected Native Int] Unexpected type on the stack.
+[IL]: Error [ExpectedNumericType]: : FSharp.Compiler.EditorServices.SemanticClassificationKeyStoreBuilder::WriteAll([FSharp.Compiler.Service]FSharp.Compiler.EditorServices.SemanticClassificationItem[])][offset 0x0000001C][found address of '[FSharp.Compiler.Service]FSharp.Compiler.EditorServices.SemanticClassificationItem'] Expected numeric type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.EditorServices.Parent::FormatEntityFullName([FSharp.Compiler.Service]FSharp.Compiler.Symbols.FSharpEntity)][offset 0x0000003F][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.FSharpChecker::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, int32, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`2<string,System.DateTime>,Microsoft.FSharp.Core.FSharpOption`1<System.Tuple`3<object,native int,int32>>>, bool, bool, bool, bool, [FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+ParallelReferenceResolution, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Control.FSharpAsync`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.Text.ISourceText>>>>, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<bool>)][offset 0x000000A2][found ref 'object'][expected ref '[FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.IBackgroundCompiler'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.FSharpChecker::TokenizeFile(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x0000005C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x00000065][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x00000082][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.Hosted.CompilerHelpers::fscCompile([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyReferenceResolver, string, string[])][offset 0x0000008B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+FsiStdinSyphon::GetLine(string, int32)][offset 0x00000032][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+MagicAssemblyResolution::ResolveAssemblyCore([FSharp.Compiler.Service]Internal.Utilities.Library.CompilationThreadToken, [FSharp.Compiler.Service]FSharp.Compiler.Text.Range, [FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, [FSharp.Compiler.Service]FSharp.Compiler.CompilerImports+TcImports, [FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiDynamicCompiler, [FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiConsoleOutput, string)][offset 0x00000015][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+clo@3508-835::Invoke([S.P.CoreLib]System.Tuple`3<char[],int32,int32>)][offset 0x000001C7][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Interactive.Shell+FsiInteractionProcessor::CompletionsForPartialLID([FSharp.Compiler.Service]FSharp.Compiler.Interactive.Shell+FsiDynamicCompilerState, string)][offset 0x00000024][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharpCheckerResults+GetReferenceResolutionStructuredToolTipText@2205::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000076][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.EditorServices.AssemblyContent+traverseMemberFunctionAndValues@176::Invoke([FSharp.Compiler.Service]FSharp.Compiler.Symbols.FSharpMemberOrFunctionOrValue)][offset 0x0000002B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.EditorServices.AssemblyContent+traverseEntity@218::GenerateNext([S.P.CoreLib]System.Collections.Generic.IEnumerable`1<FSharp.Compiler.EditorServices.AssemblySymbol>&)][offset 0x000000BB][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.EditorServices.ParsedInput+visitor@1423-11::VisitExpr([FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.Syntax.SyntaxNode>, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.Syntax.SynExpr,Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.EditorServices.CompletionContext>>, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.Syntax.SynExpr,Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.EditorServices.CompletionContext>>, [FSharp.Compiler.Service]FSharp.Compiler.Syntax.SynExpr)][offset 0x00000618][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000032][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x0000003B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000064][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x0000006D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$ServiceLexing+clo@921-528::Invoke([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`3<FSharp.Compiler.Parser+token,int32,int32>,Microsoft.FSharp.Core.Unit>)][offset 0x00000076][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Symbols+fullName@2490-3::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000030][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Driver+ProcessCommandLineFlags@301-1::Invoke(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Driver+ProcessCommandLineFlags@301-1::Invoke(string)][offset 0x00000014][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CreateILModule+MainModuleBuilder::ConvertProductVersionToILVersionInfo(string)][offset 0x00000010][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.StaticLinking+TypeForwarding::followTypeForwardForILTypeRef([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILTypeRef)][offset 0x00000010][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getCompilerOption([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<int32>)][offset 0x000000A7][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::parseOption@266(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getOptionArgList@306([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, string)][offset 0x00000049][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getOptionArgList@306([FSharp.Compiler.Service]FSharp.Compiler.CompilerOptions+CompilerOption, string)][offset 0x00000052][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::getSwitch@324(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::attempt@372([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.Unit>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.CompilerOptions+CompilerOptionBlock>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>, string, string, string, string, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.CompilerOptions+CompilerOption>)][offset 0x00000A99][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::processArg@332([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.Unit>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.CompilerOptions+CompilerOptionBlock>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.CompilerOptions+CompilerOption>, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>)][offset 0x0000003E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::AddPathMapping([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions::subSystemVersionSwitch$cont@636([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, string, [FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnderflow]: : FSharp.Compiler.CompilerOptions::DoWithColor([System.Console]System.ConsoleColor, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<Microsoft.FSharp.Core.Unit,!!0>)][offset 0x0000005E] Stack underflow.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerOptions+ResponseFile+parseLine@239::Invoke(string)][offset 0x00000026][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.ParseAndCheckInputs+CheckMultipleInputsUsingGraphMode@1866::Invoke(int32)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.ParseAndCheckInputs+CheckMultipleInputsUsingGraphMode@1866::Invoke(int32)][offset 0x0000003A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerImports+TcConfig-TryResolveLibWithDirectories@558-1::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x00000021][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerImports+TcConfig-TryResolveLibWithDirectories@558-1::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x0000003B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerConfig+TcConfig::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, bool)][offset 0x0000059C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CompilerConfig+TcConfig::.ctor([FSharp.Compiler.Service]FSharp.Compiler.CompilerConfig+TcConfigBuilder, bool)][offset 0x000005A5][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IlxGen::HashRangeSorted([S.P.CoreLib]System.Collections.Generic.IDictionary`2<!!0,System.Tuple`2<int32,!!1>>)][offset 0x00000011][found ref '[FSharp.Compiler.Service]FSharp.Compiler.IlxGen+HashRangeSorted@1850-1<T1>'][expected ref '[FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`2<int32,T0>,int32>'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IlxGen::HashRangeSorted([S.P.CoreLib]System.Collections.Generic.IDictionary`2<!!0,System.Tuple`2<int32,!!1>>)][offset 0x00000012][found ref '[FSharp.Compiler.Service]FSharp.Compiler.IlxGen+HashRangeSorted@1850<T1>'][expected ref '[FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<System.Tuple`2<int32,T0>,T0>'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.PatternMatchCompilation::isProblematicClause([FSharp.Compiler.Service]FSharp.Compiler.PatternMatchCompilation+MatchClause)][offset 0x00000040][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.PatternMatchCompilation::.cctor()][offset 0x0000000B][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.NicePrint+TastDefinitionPrinting+meths@2092-3::Invoke([FSharp.Compiler.Service]FSharp.Compiler.Infos+MethInfo)][offset 0x000000B3][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.NicePrint+PrintUtilities::layoutXmlDoc([FSharp.Compiler.Service]FSharp.Compiler.TypedTreeOps+DisplayEnv, bool, [FSharp.Compiler.Service]FSharp.Compiler.Xml.XmlDoc, [FSharp.Compiler.Service]FSharp.Compiler.Text.Layout)][offset 0x00000034][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.TypeProviders::ValidateNamespaceName(string, [FSharp.Compiler.Service]FSharp.Compiler.Tainted`1<Microsoft.FSharp.Core.CompilerServices.ITypeProvider>, [FSharp.Compiler.Service]FSharp.Compiler.Text.Range, string)][offset 0x00000074][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.TypeProviders::ValidateExpectedName([FSharp.Compiler.Service]FSharp.Compiler.Text.Range, string[], string, [FSharp.Compiler.Service]FSharp.Compiler.Tainted`1<FSharp.Compiler.TypeProviders+ProvidedType>)][offset 0x000000A8][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Lexhelp::stringBufferAsString([FSharp.Compiler.Service]FSharp.Compiler.IO.ByteBuffer)][offset 0x0000008E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Syntax.PrettyNaming::SplitNamesForILPath(string)][offset 0x0000004B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.Syntax.PrettyNaming::SplitNamesForILPath(string)][offset 0x00000054][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.Syntax.PrettyNaming::.cctor()][offset 0x00001182][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.Syntax.PrettyNaming::.cctor()][offset 0x0000118B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryWriter::writeILMetadataAndCode(bool, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILVersionInfo, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILGlobals, bool, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILAttribute>, [S.P.CoreLib]System.Collections.Generic.IEnumerable`1<FSharp.Compiler.AbstractIL.IL+ILSourceDocument>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILModuleDef, int32, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.AbstractIL.IL+ILAssemblyRef,FSharp.Compiler.AbstractIL.IL+ILAssemblyRef>)][offset 0x00000B21][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryWriter::writeILMetadataAndCode(bool, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILVersionInfo, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILGlobals, bool, bool, bool, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILAttribute>, [S.P.CoreLib]System.Collections.Generic.IEnumerable`1<FSharp.Compiler.AbstractIL.IL+ILSourceDocument>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.IL+ILModuleDef, int32, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<FSharp.Compiler.AbstractIL.IL+ILAssemblyRef,FSharp.Compiler.AbstractIL.IL+ILAssemblyRef>)][offset 0x000004E2][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILPdbWriter+PortablePdbGenerator::serializeDocumentName(string)][offset 0x00000071][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILPdbWriter+pushShadowedLocals@959::Invoke([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x000001C0][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadTypeDefRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x00000080][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadTypeDefRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x000000A1][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadMethodRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000071][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadInterfaceIdx([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadClassLayoutRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000066][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadFieldLayoutRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000045][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadEventMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadEventMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000045][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadPropertyMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadPropertyMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000045][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadMethodSemanticsRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x00000040][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadMethodImplRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadImplMapRow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000044][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadFieldRVARow([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000045][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadNestedRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadNestedRowUncached([FSharp.Core]Microsoft.FSharp.Core.FSharpRef`1<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader>>, int32)][offset 0x00000058][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::seekReadGenericParamConstraintIdx([FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+ILMetadataReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, int32)][offset 0x00000025][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::rowKindSize$cont@4423(bool, bool, bool, bool[], bool, bool, bool, bool, bool, bool, bool, bool, bool, bool, bool, bool, bool, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<FSharp.Compiler.AbstractIL.ILBinaryReader+RowElementKind>, [FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x000000E5][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader::openMetadataReader(string, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+BinaryFile, int32, [S.P.CoreLib]System.Tuple`8<uint16,System.Tuple`2<int32,int32>,bool,bool,bool,bool,bool,System.Tuple`5<Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.IL+ILPlatform>,bool,int32,int32,int32>>, [FSharp.Compiler.Service]FSharp.Compiler.AbstractIL.ILBinaryReader+PEReader, [FSharp.Compiler.Service]FSharp.Compiler.IO.ReadOnlyByteMemory, [FSharp.Core]Microsoft.FSharp.Core.FSharpOption`1<FSharp.Compiler.AbstractIL.ILBinaryReader+PEReader>, bool)][offset 0x000006BF][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadInterfaceImpls@2238-3::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadGenericParamConstraints@2303-2::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+enclIdx@2332-2::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadMethodImpls@3100-4::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadEvents@3180-3::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.ILBinaryReader+seekReadProperties@3250-3::Invoke(int32)][offset 0x0000002F][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.NativeRes+VersionHelper::TryParse(string, bool, uint16, bool, [S.P.CoreLib]System.Version&)][offset 0x00000026][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseILVersion(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseILVersion(string)][offset 0x00000021][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.AbstractIL.IL::parseNamed@5241(uint8[], [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<System.Tuple`4<string,FSharp.Compiler.AbstractIL.IL+ILType,bool,FSharp.Compiler.AbstractIL.IL+ILAttribElem>>, int32, int32)][offset 0x0000007E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Collections.Utils::shortPath(string)][offset 0x00000016][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.FSharpEnvironment::probePathForDotnetHost@320([FSharp.Core]Microsoft.FSharp.Core.Unit)][offset 0x0000002A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.CodeAnalysis.SimulatedMSBuildReferenceResolver+SimulatedMSBuildResolver@68::FSharp.Compiler.CodeAnalysis.ILegacyReferenceResolver.Resolve([FSharp.Compiler.Service]FSharp.Compiler.CodeAnalysis.LegacyResolutionEnvironment, [S.P.CoreLib]System.Tuple`2<string,string>[], string, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>, string, string, [FSharp.Core]Microsoft.FSharp.Collections.FSharpList`1<string>, string, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.Unit>, [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<bool,Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.FSharpFunc`2<string,Microsoft.FSharp.Core.Unit>>>)][offset 0x000002F5][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$FSharp.Compiler.DiagnosticsLogger::.cctor()][offset 0x000000B6][found Char] Unexpected type on the stack.
+[IL]: Error [CallVirtOnValueType]: : FSharp.Compiler.Text.RangeModule+comparer@543::System.Collections.Generic.IEqualityComparer<FSharp.Compiler.Text.Range>.GetHashCode([FSharp.Compiler.Service]FSharp.Compiler.Text.Range)][offset 0x00000002] Callvirt on a value type method.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.PathMapModule::applyDir([FSharp.Compiler.Service]Internal.Utilities.PathMap, string)][offset 0x00000035][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.PathMapModule::applyDir([FSharp.Compiler.Service]Internal.Utilities.PathMap, string)][offset 0x00000041][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000000A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x00000013][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000001C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x00000025][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : <StartupCode$FSharp-Compiler-Service>.$Internal.Utilities.XmlAdapters::.cctor()][offset 0x0000002E][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IO.FileSystemUtils::trimQuotes(string)][offset 0x0000000B][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : FSharp.Compiler.IO.FileSystemUtils::trimQuotes(string)][offset 0x00000014][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Library.String::lowerCaseFirstChar(string)][offset 0x0000003A][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Internal.Utilities.Library.Array::loop@275-3(bool[], int32)][offset 0x00000008][found Byte] Unexpected type on the stack.
+Types found: 19622
+Types verified: 19622
+Methods found: 81924
+Methods verified: 81924
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x00000081][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000029][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Partition([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Choose@2245-2::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000030][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+countAndCollectTrueItems@2575-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000022][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x0000001E][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x0000002D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000029][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,bool>, string)][offset 0x0000006C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x0000001C][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x00000023][found Short] Unexpected type on the stack.
+Types found: 2207
+Types verified: 2207
+Methods found: 9493
+Methods verified: 9493
diff --git a/eng/ilverify_FSharp.Core_Debug_netstandard2.0.bsl b/eng/ilverify_FSharp.Core_Debug_netstandard2.0.bsl
new file mode 100644
index 00000000000..2dfbb918261
--- /dev/null
+++ b/eng/ilverify_FSharp.Core_Debug_netstandard2.0.bsl
@@ -0,0 +1,21 @@
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x000000A0][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000029][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Partition([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Pipe #2 input at line 2241@2245-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000030][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Pipe #2 input at line 2571@2575-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000022][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x00000020][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000029][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,bool>, string)][offset 0x00000075][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.Operators::castToString(!!0)][offset 0x00000001][found value 'T'][expected ref 'string'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives::retype(!!0)][offset 0x00000001][found value 'T'][expected value 'TResult'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x0000001C][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x00000023][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::castclassPrim(object)][offset 0x00000006][found ref 'T'][expected value 'T'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::notnullPrim(!!0)][offset 0x00000002][found Nullobjref 'NullReference'][expected value 'T'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::iscastPrim(object)][offset 0x00000006][found ref 'T'][expected value 'T'] Unexpected type on the stack.
+Types found: 2954
+Types verified: 2954
+Methods found: 11088
+Methods verified: 11088
diff --git a/eng/ilverify_FSharp.Core_Debug_netstandard2.1.bsl b/eng/ilverify_FSharp.Core_Debug_netstandard2.1.bsl
new file mode 100644
index 00000000000..8f8b54ff2ee
--- /dev/null
+++ b/eng/ilverify_FSharp.Core_Debug_netstandard2.1.bsl
@@ -0,0 +1,21 @@
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x000000A0][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000029][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Partition([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Pipe #2 input at line 2241@2245-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000030][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Pipe #2 input at line 2571@2575-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000022][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x00000020][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x00000031][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000029][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,bool>, string)][offset 0x00000075][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.Operators::castToString(!!0)][offset 0x00000001][found value 'T'][expected ref 'string'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives::retype(!!0)][offset 0x00000001][found value 'T'][expected value 'TResult'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x0000001C][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x00000023][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::castclassPrim(object)][offset 0x00000006][found ref 'T'][expected value 'T'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::notnullPrim(!!0)][offset 0x00000002][found Nullobjref 'NullReference'][expected value 'T'] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.BasicInlinedOperations::iscastPrim(object)][offset 0x00000006][found ref 'T'][expected value 'T'] Unexpected type on the stack.
+Types found: 2963
+Types verified: 2963
+Methods found: 11107
+Methods verified: 11107
diff --git a/eng/ilverify_FSharp.Core_Release_netstandard2.0.bsl b/eng/ilverify_FSharp.Core_Release_netstandard2.0.bsl
new file mode 100644
index 00000000000..b827fd3584d
--- /dev/null
+++ b/eng/ilverify_FSharp.Core_Release_netstandard2.0.bsl
@@ -0,0 +1,16 @@
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x00000081][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000029][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Partition([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Choose@2245-2::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000030][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+countAndCollectTrueItems@2575-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000022][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x0000001E][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x0000002D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000029][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,bool>, string)][offset 0x0000006C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x0000001C][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x00000023][found Short] Unexpected type on the stack.
+Types found: 2207
+Types verified: 2207
+Methods found: 9493
+Methods verified: 9493
diff --git a/eng/ilverify_FSharp.Core_Release_netstandard2.1.bsl b/eng/ilverify_FSharp.Core_Release_netstandard2.1.bsl
new file mode 100644
index 00000000000..27e74d20994
--- /dev/null
+++ b/eng/ilverify_FSharp.Core_Release_netstandard2.1.bsl
@@ -0,0 +1,16 @@
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Choose([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, !!0[])][offset 0x00000081][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000029][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel::Partition([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!0,bool>, !!0[])][offset 0x00000038][found Byte] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+Choose@2245-2::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000030][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Collections.ArrayModule+Parallel+countAndCollectTrueItems@2575-1::Invoke(int32, [System.Threading.Tasks.Parallel]System.Threading.Tasks.ParallelLoopState, int32)][offset 0x00000022][found Boolean] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x0000001E][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Map([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,char>, string)][offset 0x0000002D][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000029][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::MapIndexed([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,Microsoft.FSharp.Core.FSharpFunc`2<char,char>>, string)][offset 0x00000033][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.StringModule::Filter([FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<char,bool>, string)][offset 0x0000006C][found Char] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x0000001C][found Short] Unexpected type on the stack.
+[IL]: Error [StackUnexpected]: : Microsoft.FSharp.Core.LanguagePrimitives+HashCompare::GenericEqualityCharArray(char[], char[])][offset 0x00000023][found Short] Unexpected type on the stack.
+Types found: 2216
+Types verified: 2216
+Methods found: 9512
+Methods verified: 9512