JIT: Remove "promoted parameter" tailcall limitation (#69034)

This is allowed for explicit tailcalls so it seems unlikely that there are any actual problems with allowing this.
dotnet · May 12, 2022 · 6bac532 · 6bac532
1 parent bad2e1c
commit 6bac532
Showing 1 changed file with 0 additions and 5 deletions.
diff --git a/src/coreclr/jit/morph.cpp b/src/coreclr/jit/morph.cpp
@@ -6735,11 +6735,6 @@ GenTree* Compiler::fgMorphPotentialTailCall(GenTreeCall* call)
                     return nullptr;
                 }
             }
-            if (varDsc->lvPromoted && varDsc->lvIsParam && !lvaIsImplicitByRefLocal(varNum))
-            {
-                failTailCall("Has Struct Promoted Param", varNum);
-                return nullptr;
-            }
             if (varDsc->lvPinned)
             {
                 // A tail call removes the method from the stack, which means the pinning