[LLVMdev] Bug 18968

reed kotler rkotler at mips.com
Tue Feb 25 12:34:53 PST 2014 

Clang/llvm is core dumping in target independent code.

It's a regression from yesterday. Files to reproduce this are in bug 18968 .

I have not tried to bisect the failure yet.


Starting program: /home/rkotler/llvmw/build/Debug+Asserts/bin/clang -cc1 
-triple mipsel--linux-gnu -S -disable-free -main-file-name 
PpmdHandler.cpp -mrelocation-model static -fmath-errno -no-integrated-as 
-mconstructor-aliases -target-cpu mips32r2 -target-abi o32 -mfloat-abi 
hard -target-linker-version 2.22 -momit-leaf-frame-pointer 
-coverage-file /tmp/PpmdHandler-e3f606.s -resource-dir 
/home/rkotler/llvmw/build/Debug+Asserts/bin/../lib/clang/3.5 -D 
_GNU_SOURCE -D __STDC_LIMIT_MACROS -D NDEBUG -D SMALL_PROBLEM_SIZE -D 
BREAK_HANDLER -D UNICODE -D _UNICODE -D _FILE_OFFSET_BITS=64 -D 
_LARGEFILE_SOURCE -D NDEBUG -D _REENTRANT -D ENV_UNIX -D 
_7ZIP_LARGE_PAGES -I 
/home/rkotler/llvmw/build/projects/test-suite/MultiSource/Benchmarks/7zip -I 
/home/rkotler/workspace/llvm/projects/test-suite/MultiSource/Benchmarks/7zip 
-I /home/rkotler/workspace/llvm/projects/test-suite/include -I 
../../../include -I /home/rkotler/llvmw/build/include -I 
/home/rkotler/workspace/llvm/include -I 
/home/rkotler/workspace/llvm/projects/test-suite/MultiSource/Benchmarks/7zip/C 
-I 
/home/rkotler/workspace/llvm/projects/test-suite/MultiSource/Benchmarks/7zip/CPP/myWindows 
-I 
/home/rkotler/workspace/llvm/projects/test-suite/MultiSource/Benchmarks/7zip/CPP/include_windows 
-I 
/home/rkotler/workspace/llvm/projects/test-suite/MultiSource/Benchmarks/7zip/CPP 
-I . -internal-isystem 
/mips/arch/overflow/codesourcery/mips-linux-gnu/pro/release/2011.09-90/Linux/lib/gcc/mips-linux-gnu/4.5.2/../../../../mips-linux-gnu/include/c++/4.5.2 
-internal-isystem 
/mips/arch/overflow/codesourcery/mips-linux-gnu/pro/release/2011.09-90/Linux/lib/gcc/mips-linux-gnu/4.5.2/../../../../mips-linux-gnu/include/c++/4.5.2/mips-linux-gnu/el 
-internal-isystem 
/mips/arch/overflow/codesourcery/mips-linux-gnu/pro/release/2011.09-90/Linux/lib/gcc/mips-linux-gnu/4.5.2/../../../../mips-l---Type 
<return> to continue, or q <return> to quit---
inux-gnu/include/c++/4.5.2/backward -internal-isystem 
/mips/arch/overflow/codesourcery/mips-linux-gnu/pro/release/2011.09-90/Linux/lib/gcc/mips-linux-gnu/4.5.2/../../../../mips-linux-gnu/libc/el/usr/local/include 
-internal-isystem 
/home/rkotler/llvmw/build/Debug+Asserts/bin/../lib/clang/3.5/include 
-internal-externc-isystem 
/mips/arch/overflow/codesourcery/mips-linux-gnu/pro/release/2011.09-90/Linux/lib/gcc/mips-linux-gnu/4.5.2/include 
-internal-externc-isystem 
/mips/arch/overflow/codesourcery/mips-linux-gnu/pro/release/2011.09-90/Linux/lib/gcc/mips-linux-gnu/4.5.2/../../../../mips-linux-gnu/libc/usr/include 
-internal-externc-isystem 
/mips/arch/overflow/codesourcery/mips-linux-gnu/pro/release/2011.09-90/Linux/lib/gcc/mips-linux-gnu/4.5.2/../../../../mips-linux-gnu/libc/el/include 
-internal-externc-isystem 
/mips/arch/overflow/codesourcery/mips-linux-gnu/pro/release/2011.09-90/Linux/lib/gcc/mips-linux-gnu/4.5.2/../../../../mips-linux-gnu/libc/el/usr/include 
-O3 -fdeprecated-macro -fno-dwarf-directory-asm -fdebug-compilation-dir 
/home/rkotler/llvmw/build/projects/test-suite/MultiSource/Benchmarks/7zip -ferror-limit 
19 -fmessage-length 0 -pthread -mstackrealign -fobjc-runtime=gcc 
-fcxx-exceptions -fexceptions -fdiagnostics-show-option -vectorize-loops 
-vectorize-slp -o /tmp/PpmdHandler-e3f606.s -x c++ 
/home/rkotler/workspace/llvm/projects/test-suite/MultiSource/Benchmarks/7zip/CPP/7zip/Archive/PpmdHandler.cpp
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x0000000000fb763c in llvm::Instruction::getParent (this=0x301)
     at /home/rkotler/workspace/llvm/include/llvm/IR/Instruction.h:54
54      inline       BasicBlock *getParent()       { return Parent; }
(gdb) bt
#0  0x0000000000fb763c in llvm::Instruction::getParent (this=0x301)
     at /home/rkotler/workspace/llvm/include/llvm/IR/Instruction.h:54
#1  0x000000000306c6d2 in isSafePHIToSpeculate (PN=..., DL=0x5ff5030)
     at /home/rkotler/workspace/llvm/lib/Transforms/Scalar/SROA.cpp:1046
#2  0x0000000003076ecc in (anonymous 
namespace)::SROA::rewritePartition(llvm::AllocaInst &, (anonymous 
namespace)::AllocaSlices &, (anonymous 
namespace)::AllocaSlices::iterator, (anonymous 
namespace)::AllocaSlices::iterator, int64_t, int64_t, 
llvm::ArrayRef<{anonymous}::Slice*>) (this=0x600aac0, AI=..., S=...,
     B=0x6091370, E=0x60917d8, BeginOffset=0, EndOffset=4, SplitUses=...)
     at /home/rkotler/workspace/llvm/lib/Transforms/Scalar/SROA.cpp:3168
#3  0x000000000307781f in (anonymous namespace)::SROA::splitAlloca (
     this=0x600aac0, AI=..., S=...)
     at /home/rkotler/workspace/llvm/lib/Transforms/Scalar/SROA.cpp:3304
#4  0x000000000307807c in (anonymous namespace)::SROA::runOnAlloca (
     this=0x600aac0, AI=...)
     at /home/rkotler/workspace/llvm/lib/Transforms/Scalar/SROA.cpp:3439
#5  0x0000000003078d93 in (anonymous namespace)::SROA::runOnFunction (
     this=0x600aac0, F=...)
     at /home/rkotler/workspace/llvm/lib/Transforms/Scalar/SROA.cpp:3618
#6  0x00000000034c45ba in llvm::FPPassManager::runOnFunction 
(this=0x600b370,
     F=...) at 
/home/rkotler/workspace/llvm/lib/IR/LegacyPassManager.cpp:1537
#7  0x00000000031b4beb in (anonymous 
namespace)::CGPassManager::RunPassOnSCC (
     this=0x6009230, P=0x600b370, CurSCC=..., CG=...,
---Type <return> to continue, or q <return> to quit---
     CallGraphUpToDate=@0x7fffffffbc56: true,
     DevirtualizedCall=@0x7fffffffbcf8: false)
     at 
/home/rkotler/workspace/llvm/lib/Analysis/IPA/CallGraphSCCPass.cpp:148
#8  0x00000000031b5a45 in (anonymous 
namespace)::CGPassManager::RunAllPassesOnSCC (this=0x6009230, 
CurSCC=..., CG=...,
     DevirtualizedCall=@0x7fffffffbcf8: false)
     at 
/home/rkotler/workspace/llvm/lib/Analysis/IPA/CallGraphSCCPass.cpp:405
#9  0x00000000031b5dc4 in (anonymous 
namespace)::CGPassManager::runOnModule (
     this=0x6009230, M=...)
     at 
/home/rkotler/workspace/llvm/lib/Analysis/IPA/CallGraphSCCPass.cpp:460
#10 0x00000000034c4acf in (anonymous 
namespace)::MPPassManager::runOnModule (
     this=0x5ff4e50, M=...)
     at /home/rkotler/workspace/llvm/lib/IR/LegacyPassManager.cpp:1615
#11 0x00000000034c50c3 in llvm::legacy::PassManagerImpl::run 
(this=0x6003300,
     M=...) at 
/home/rkotler/workspace/llvm/lib/IR/LegacyPassManager.cpp:1710
#12 0x00000000034c52d5 in llvm::legacy::PassManager::run (this=0x5b22510,
     M=...) at 
/home/rkotler/workspace/llvm/lib/IR/LegacyPassManager.cpp:1745
#13 0x0000000000f6ce13 in (anonymous 
namespace)::EmitAssemblyHelper::EmitAssembly (this=0x7fffffffc020, 
Action=clang::Backend_EmitAssembly, OS=0x5b4b460)
     at 
/home/rkotler/workspace/llvm/tools/clang/lib/CodeGen/BackendUtil.cpp:602
#14 0x0000000000f6cf34 in clang::EmitBackendOutput (Diags=..., CGOpts=...,
     TOpts=..., LOpts=..., TDesc=..., M=0x5b4dab0,
     Action=clang::Backend_EmitAssembly, OS=0x5b4b460)
---Type <return> to continue, or q <return> to quit---
     at 
/home/rkotler/workspace/llvm/tools/clang/lib/CodeGen/BackendUtil.cpp:619
#15 0x0000000000f666b5 in clang::BackendConsumer::HandleTranslationUnit (
     this=0x5b4dd40, C=...)
     at 
/home/rkotler/workspace/llvm/tools/clang/lib/CodeGen/CodeGenAction.cpp:161
#16 0x0000000001189d15 in clang::ParseAST (S=..., PrintStats=false,
     SkipFunctionBodies=false)
     at /home/rkotler/workspace/llvm/tools/clang/lib/Parse/ParseAST.cpp:153
#17 0x0000000000ce8223 in clang::ASTFrontendAction::ExecuteAction (
     this=0x5b26fa0)
     at 
/home/rkotler/workspace/llvm/tools/clang/lib/Frontend/FrontendAction.cpp:476
#18 0x0000000000f681a2 in clang::CodeGenAction::ExecuteAction 
(this=0x5b26fa0)
     at 
/home/rkotler/workspace/llvm/tools/clang/lib/CodeGen/CodeGenAction.cpp:545
#19 0x0000000000ce7d52 in clang::FrontendAction::Execute (this=0x5b26fa0)
     at 
/home/rkotler/workspace/llvm/tools/clang/lib/Frontend/FrontendAction.cpp:378
#20 0x0000000000cbb222 in clang::CompilerInstance::ExecuteAction (
     this=0x5b22ac0, Act=...)
     at 
/home/rkotler/workspace/llvm/tools/clang/lib/Frontend/CompilerInstance.cpp:715
#21 0x0000000000c87c66 in clang::ExecuteCompilerInvocation 
(Clang=0x5b22ac0)
---Type <return> to continue, or q <return> to quit---
     at 
/home/rkotler/workspace/llvm/tools/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:239
#22 0x0000000000c795a5 in cc1_main (ArgBegin=0x7fffffffd298,
     ArgEnd=0x7fffffffd618,
     Argv0=0x7fffffffe111 
"/home/rkotler/llvmw/build/Debug+Asserts/bin/clang",
     MainAddr=0xc8201c)
     at 
/home/rkotler/workspace/llvm/tools/clang/tools/driver/cc1_main.cpp:101
#23 0x0000000000c83611 in main (argc_=114, argv_=0x7fffffffdb98)
     at 
/home/rkotler/workspace/llvm/tools/clang/tools/driver/driver.cpp:315
(gdb)   quit
A debugging session is active.

     Inferior 1 [process 6801] will be killed.
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