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Is it normal that fastcomp on linux takes ~6GB? #6
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I am guessing that the generated executables have debugging symbols preserved in them. If you installed the Does that help? |
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Thank you a lot @juj! Indeed it works much better What do you think about make this flag a default one for installing SDK from a tag? This is a only one way to get Emscripten on Linux and it is too bad this is hidden. |
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I'm closing this as this is not an issue anymore. |
kripken
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Mar 15, 2017
…ase ctor in window. Need add "complete object flag" check in eh cleanup code. The problem only happen on window ( A MS-ABI issuer ) The nature of the problem is virtual base dtor called more than it is needed after exception throw in inheriting base class(with virtual bases) ctor. The root problem is when throw happen, not all virtual base classes have been contructed, so not all virtual base dtors are need to call for ehcleanup. clang has code to handle vbase initialization: basically add check for "complete object flag" before call to v-base ctor. But that part is missing for cleanup code. To fix this add similar code as v-base init to cleanup code, same algorithm. 1> Add new routine: EmitDtorCompleteObjectHandler With corresponding to EmitCtorCompleteObjectHandler 2> In the EmitDestructorCal Call EmitDtorCompleteObjectHandler when generate ehcleanup inside ctor. Just add check for "complete object flag" before call to v-base dtor. Without my change: ehcleanup: ; preds = %ctor.skip_vbases %13 = cleanuppad within none [], !dbg !66 %14 = bitcast %struct.class_0* %this1 to i8*, !dbg !66 %15 = getelementptr inbounds i8, i8* %14, i64 8, !dbg !66 %16 = bitcast i8* %15 to %struct.class_2*, !dbg !66 call void @"\01??1class_2@@UEAA@XZ"(%struct.class_2* %16) #6 [ "funclet"(token %13) ], !dbg !66 cleanupret from %13 unwind to caller, !dbg !66 with my change: ehcleanup: ; preds = %ctor.skip_vbases %13 = cleanuppad within none [], !dbg !66 %14 = bitcast %struct.class_0* %this1 to i8*, !dbg !66 %15 = getelementptr inbounds i8, i8* %14, i64 8, !dbg !66 %16 = bitcast i8* %15 to %struct.class_2*, !dbg !66 %is_complete_object4 = icmp ne i32 %is_most_derived2, 0, !dbg !66 br i1 %is_complete_object4, label %Dtor.dtor_vbase, label %Dtor.skip_vbase, !d bg !66 Dtor.dtor_vbase: ; preds = %ehcleanup call void @"\01??1class_2@@UEAA@XZ"(%struct.class_2* %16) #6 [ "funclet"(token %13) ], !dbg !66 br label %Dtor.skip_vbase, !dbg !66 Dtor.skip_vbase: ; preds = %Dtor.dtor_vbase, %ehcleanup cleanupret from %13 unwind to caller, !dbg !66 Please let me know you need more info. Patch by Jennifer Yu. Differential Revision: https://reviews.llvm.org/D27358 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@288869 91177308-0d34-0410-b5e6-96231b3b80d8
juj
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Jan 31, 2018
Summary: The test being added in this patch used to cause an assertion failure: /build/./bin/clang -cc1 -internal-isystem /build/lib/clang/5.0.0/include -nostdsysteminc -verify -fsyntax-only -std=c++11 -Wshadow-all /src/tools/clang/test/SemaCXX/warn-shadow.cpp -- Exit Code: 134 Command Output (stderr): -- clang: /src/tools/clang/lib/AST/ASTDiagnostic.cpp:424: void clang::FormatASTNodeDiagnosticArgument(DiagnosticsEngine::ArgumentKind, intptr_t, llvm::StringRef, llvm::StringRef, ArrayRef<DiagnosticsEngine::ArgumentValue>, SmallVectorImpl<char> &, void *, ArrayRef<intptr_t>): Assertion `isa<NamedDecl>(DC) && "Expected a NamedDecl"' failed. #0 0x0000000001c7a1b4 PrintStackTraceSignalHandler(void*) (/build/./bin/clang+0x1c7a1b4) #1 0x0000000001c7a4e6 SignalHandler(int) (/build/./bin/clang+0x1c7a4e6) #2 0x00007f30880078d0 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0xf8d0) #3 0x00007f3087054067 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x35067) #4 0x00007f3087055448 abort (/lib/x86_64-linux-gnu/libc.so.6+0x36448) #5 0x00007f308704d266 (/lib/x86_64-linux-gnu/libc.so.6+0x2e266) #6 0x00007f308704d312 (/lib/x86_64-linux-gnu/libc.so.6+0x2e312) #7 0x00000000035b7f22 clang::FormatASTNodeDiagnosticArgument(clang::DiagnosticsEngine::ArgumentKind, long, llvm::StringRef, llvm::StringRef, llvm::ArrayRef<std::pair<clang::DiagnosticsEngine::ArgumentKind, long> >, llvm::SmallVectorImpl<char>&, void*, llvm::ArrayRef<long>) (/build/ ./bin/clang+0x35b7f22) #8 0x0000000001ddbae4 clang::Diagnostic::FormatDiagnostic(char const*, char const*, llvm::SmallVectorImpl<char>&) const (/build/./bin/clang+0x1ddbae4) #9 0x0000000001ddb323 clang::Diagnostic::FormatDiagnostic(char const*, char const*, llvm::SmallVectorImpl<char>&) const (/build/./bin/clang+0x1ddb323) #10 0x00000000022878a4 clang::TextDiagnosticBuffer::HandleDiagnostic(clang::DiagnosticsEngine::Level, clang::Diagnostic const&) (/build/./bin/clang+0x22878a4) #11 0x0000000001ddf387 clang::DiagnosticIDs::ProcessDiag(clang::DiagnosticsEngine&) const (/build/./bin/clang+0x1ddf387) #12 0x0000000001dd9dea clang::DiagnosticsEngine::EmitCurrentDiagnostic(bool) (/build/./bin/clang+0x1dd9dea) #13 0x0000000002cad00c clang::Sema::EmitCurrentDiagnostic(unsigned int) (/build/./bin/clang+0x2cad00c) #14 0x0000000002d91cd2 clang::Sema::CheckShadow(clang::NamedDecl*, clang::NamedDecl*, clang::LookupResult const&) (/build/./bin/clang+0x2d91cd2) Stack dump: 0. Program arguments: /build/./bin/clang -cc1 -internal-isystem /build/lib/clang/5.0.0/include -nostdsysteminc -verify -fsyntax-only -std=c++11 -Wshadow-all /src/tools/clang/test/SemaCXX/warn-shadow.cpp 1. /src/tools/clang/test/SemaCXX/warn-shadow.cpp:214:23: current parser token ';' 2. /src/tools/clang/test/SemaCXX/warn-shadow.cpp:213:26: parsing function body 'handleLinkageSpec' 3. /src/tools/clang/test/SemaCXX/warn-shadow.cpp:213:26: in compound statement ('{}') /build/tools/clang/test/SemaCXX/Output/warn-shadow.cpp.script: line 1: 15595 Aborted (core dumped) /build/./bin/clang -cc1 -internal-isystem /build/lib/clang/5.0.0/include -nostdsysteminc -verify -fsyntax-only -std=c++11 -Wshadow-all /src/tools/clang/test/SemaCXX/warn-shadow.cpp Reviewers: rsmith Reviewed By: rsmith Subscribers: krytarowski, cfe-commits Differential Revision: https://reviews.llvm.org/D33207 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@303325 91177308-0d34-0410-b5e6-96231b3b80d8
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Hi, I'm trying to prepare a Docker image with Emscripten (based on Ubuntu 15.10) and it works fine except image size what is huge. Major chunk of image is consumed by clang. There is an output.
Question is: Can we do something with compilation flags that in default it will produce size optimized clang binary files?
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