<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Great! Thanks for looking into this. :)<div><br></div><div>-bw</div><div><br><div><div>On Nov 17, 2013, at 6:35 PM, Manman Ren <<a href="mailto:manman.ren@gmail.com">manman.ren@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div>Hi Bill,<br><br>Thanks for the testing case. Most of the time is spent on debug info verifier.<br>I fixed a bug in r194974, now it takes too long to run debug info verification.<br><br>Debug info verifier is part of the verifier which is a Function Pass. Tot currently tries to pull all reachable debug info MDNodes in each function, which is too time-consuming. The correct fix seems to be separating debug info verification to its own module pass.<br>
<br>I will disable the debug info verifier until a correct fix is found.<br><br></div>Thanks,<br>Manman<br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sun, Nov 17, 2013 at 6:04 PM, Bill Wendling <span dir="ltr"><<a href="mailto:isanbard@gmail.com" target="_blank">isanbard@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I think it might be. I’m attaching a preprocessed file that can show the problem. Compile it with ToT.<br>
<br>
$ clang++ -g -fvisibility-inlines-hidden -fno-exceptions -fno-rtti -fno-common -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing -m64 -pedantic -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcovered-switch-default -Wno-uninitialized -Wno-missing-field-initializers -c LLVMTidyModule.ii<br>
<span class="HOEnZb"><font color="#888888"><br>
-bw<br>
<br>
</font></span><br><br>
<br>
On Nov 17, 2013, at 6:01 PM, Manman Ren <<a href="mailto:mren@apple.com">mren@apple.com</a>> wrote:<br>
<br>
> Hi Bill<br>
><br>
> Is this a recent regression? I recently changed the debug info verifier to fix a bug.<br>
><br>
> Thanks,<br>
> Manman<br>
><br>
>> On Nov 17, 2013, at 5:52 PM, Bill Wendling <<a href="mailto:isanbard@gmail.com">isanbard@gmail.com</a>> wrote:<br>
>><br>
>> I think that debug info is slowing a self-hosting build down. This build has been going for ages now and shows no sign of quitting. To reproduce, build a Release+Asserts build of clang. Then use that to build a Debug+Asserts version. Include all of the bells and whistles, like the clang-extras and compiler-rt libraries.<br>
>><br>
>> The reason I suspect debug info is because of this stack trace:<br>
>><br>
>> [morbo:llvm] lldb -p 92084<br>
>> Attaching to process with:<br>
>> process attach -p 92084<br>
>> Process 92084 stopped<br>
>> Executable module set to "/Users/morbo/llvm/llvm-clean.obj/Release+Asserts/bin/clang".<br>
>> Architecture set to: x86_64-apple-macosx.<br>
>> (lldb) bt<br>
>> * thread #1: tid = 0xbebaf, 0x000000010c5f6dc1 clang`llvm::SmallPtrSetImpl::insert_imp(void const*) + 161, queue = 'com.apple.main-thread, stop reason = signal SIGSTOP<br>
>> frame #0: 0x000000010c5f6dc1 clang`llvm::SmallPtrSetImpl::insert_imp(void const*) + 161<br>
>> frame #1: 0x000000010c5147df clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 47<br>
>> frame #2: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #3: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #4: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #5: 0x000000010c5148c4 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 276<br>
>> frame #6: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #7: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #8: 0x000000010c5148c4 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 276<br>
>> frame #9: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #10: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #11: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #12: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #13: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #14: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #15: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #16: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #17: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #18: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #19: 0x000000010c5148c4 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 276<br>
>> frame #20: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #21: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #22: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #23: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #24: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #25: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #26: 0x000000010c5148c4 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 276<br>
>> frame #27: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #28: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #29: 0x000000010c5148c4 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 276<br>
>> frame #30: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #31: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #32: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #33: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #34: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #35: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #36: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #37: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #38: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #39: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #40: 0x000000010c5148c4 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 276<br>
>> frame #41: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #42: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #43: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #44: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #45: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #46: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #47: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #48: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #49: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #50: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #51: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #52: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #53: 0x000000010c5148c4 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 276<br>
>> frame #54: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #55: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #56: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #57: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #58: 0x000000010c5145f3 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 547<br>
>> frame #59: 0x000000010c514695 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 709<br>
>> frame #60: 0x000000010c5148c4 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 276<br>
>> frame #61: 0x000000010c514701 clang`llvm::DebugInfoFinder::processType(llvm::DIType) + 817<br>
>> frame #62: 0x000000010c5140e2 clang`llvm::DebugInfoFinder::processScope(llvm::DIScope) + 50<br>
>> frame #63: 0x000000010c514895 clang`llvm::DebugInfoFinder::processSubprogram(llvm::DISubprogram) + 229<br>
>> frame #64: 0x000000010c5141e2 clang`llvm::DebugInfoFinder::processScope(llvm::DIScope) + 306<br>
>> frame #65: 0x000000010c514cdb clang`llvm::DebugInfoFinder::processLocation(llvm::Module const&, llvm::DILocation) + 91<br>
>> frame #66: 0x000000010c5af3d6 clang`(anonymous namespace)::Verifier::visitInstruction(llvm::Instruction&) + 2278<br>
>> frame #67: 0x000000010c5b0bc1 clang`(anonymous namespace)::Verifier::VerifyCallSite(llvm::CallSite) + 1489<br>
>> frame #68: 0x000000010c5af949 clang`(anonymous namespace)::Verifier::visitCallInst(llvm::CallInst&) + 73<br>
>> frame #69: 0x000000010c5adbea clang`llvm::InstVisitor<(anonymous namespace)::Verifier, void>::visit(llvm::Instruction&) + 10058<br>
>> frame #70: 0x000000010c5aa56b clang`(anonymous namespace)::Verifier::runOnFunction(llvm::Function&) + 1611<br>
>> frame #71: 0x000000010c58963b clang`llvm::FPPassManager::runOnFunction(llvm::Function&) + 347<br>
>> frame #72: 0x000000010c588e4b clang`llvm::legacy::FunctionPassManagerImpl::run(llvm::Function&) + 235<br>
>> frame #73: 0x000000010c588d26 clang`llvm::legacy::FunctionPassManager::run(llvm::Function&) + 86<br>
>> frame #74: 0x000000010ad490f4 clang`clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*, clang::BackendAction, llvm::raw_ostream*) + 5492<br>
>> frame #75: 0x000000010ae47b45 clang`clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 453<br>
>> frame #76: 0x000000010ae99764 clang`clang::ParseAST(clang::Sema&, bool, bool) + 516<br>
>> frame #77: 0x000000010ae469da clang`clang::CodeGenAction::ExecuteAction() + 122<br>
>> frame #78: 0x000000010abf3e66 clang`clang::FrontendAction::Execute() + 134<br>
>> frame #79: 0x000000010abcf70d clang`clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 973<br>
>> frame #80: 0x000000010ab97a44 clang`clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 4276<br>
>> frame #81: 0x000000010ab8f843 clang`cc1_main(char const**, char const**, char const*, void*) + 835<br>
>> frame #82: 0x000000010ab93d52 clang`main + 1138<br>
>> frame #83: 0x00007fff910165fd libdyld.dylib`start + 1<br>
>> frame #84: 0x00007fff910165fd libdyld.dylib`start + 1<br>
>> (lldb)<br>
>><br>
>> This is the command:<br>
>><br>
>> morbo 92084 100.0 2.3 2888888 380520 s002 R+ 5:47PM 1:10.64 /Users/morbo/llvm/llvm-clean.obj/Release+Asserts/bin/clang -cc1 -triple x86_64-apple-macosx10.9.0 -emit-obj -mrelax-all -disable-free -main-file-name LLVMTidyModule.cpp -mrelocation-model pic -pic-level 2 -mdisable-fp-elim -relaxed-aliasing -masm-verbose -munwind-tables -target-cpu core2 -target-linker-version 136 -gdwarf-2 -coverage-file /Users/morbo/llvm/llvm.obj/tools/clang/tools/extra/clang-tidy/llvm/Debug+Asserts/LLVMTidyModule.o -resource-dir /Users/morbo/llvm/llvm-clean.obj/Release+Asserts/bin/../lib/clang/3.4 -dependency-file /Users/morbo/llvm/llvm.obj/tools/clang/tools/extra/clang-tidy/llvm/Debug+Asserts/LLVMTidyModule.d.tmp -MP -MT /Users/morbo/llvm/llvm.obj/tools/clang/tools/extra/clang-tidy/llvm/Debug+Asserts/LLVMTidyModule.o -MT /Users/morbo/llvm/llvm.obj/tools/clang/tools/extra/clang-tidy/llvm/Debug+Asserts/LLVMTidyModule.d -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_!<br>
>> FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /Users/morbo/llvm/llvm.obj/include -I /Users/morbo/llvm/llvm.obj/tools/clang/tools/extra/clang-tidy/llvm -I /Users/morbo/llvm/llvm.src/include -I /Users/morbo/llvm/llvm.src/tools/clang/tools/extra/clang-tidy/llvm -I /Users/morbo/llvm/llvm.src/tools/clang/tools/extra/clang-tidy/llvm/../../../../include -I /Users/morbo/llvm/llvm.obj/tools/clang/tools/extra/clang-tidy/llvm/../../../../include -I /Users/morbo/llvm/llvm-clean.install/lib/c++/v1 -stdlib=libc++ -Woverloaded-virtual -Wcast-qual -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcovered-switch-default -Wno-uninitialized -Wno-missing-field-initializers -pedantic -fdeprecated-macro -fdebug-compilation-dir /Users/morbo/llvm/llvm.obj/tools/clang/tools/extra/clang-tidy/llvm -ferror-limit 19 -fmessage-length 191 -fvisibility-inlines-hidden -stack-protector 1 -mstackrealign -fblocks -fno-rtti -fobjc-runtime=macosx-10.9.0 -fencode-extended-block-signature -fno-common -fdi!<br>
>> agnostics-show-option -fcolor-diagnostics -vectorize-slp -o /Users/morbo/llvm/llvm.obj/tools/clang/tools/extra/clang-tidy/llvm/Debug+Asserts/LLVMTidyModule.o -x c++ /Users/morbo/llvm/llvm.src/tools/clang/tools/extra/clang-tidy/llvm/LLVMTidyModule.cpp<br>
>><br>
>><br>
>> -bw<br>
>><br>
>><br>
>> _______________________________________________<br>
>> LLVM Developers mailing list<br>
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>> <a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev" target="_blank">http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev</a><br>
<br>
<br></blockquote></div><br></div>
</blockquote></div><br></div></body></html>