[LLVMbugs] [Bug 11357] New: Assertion `getConstant() == V && "Marking constant with different value"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11357

             Bug #: 11357
           Summary: Assertion `getConstant() == V && "Marking constant
                    with different value"' failed.
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: regehr at cs.utah.edu
                CC: chenyang at cs.utah.edu, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


[regehr at gamow tmp059]$ clang -v

clang version 3.1 (trunk 144292)
Target: x86_64-unknown-linux-gnu
Thread model: posix

[regehr at gamow tmp059]$ clang -O1 -c -w small.c

clang: SCCP.cpp:111: bool<unnamed>::LatticeVal::markConstant(llvm::Constant*):
Assertion `getConstant() == V && "Marking constant with different value"'
failed.
0  clang           0x0000000001cfd31f
1  clang           0x0000000001cff592
2  libpthread.so.0 0x00007ffff7bcf8f0
3  libc.so.6       0x00007ffff6ebea75 gsignal + 53
4  libc.so.6       0x00007ffff6ec25c0 abort + 384
5  libc.so.6       0x00007ffff6eb7941 __assert_fail + 241
6  clang           0x00000000019b0e28
7  clang           0x00000000019b13a4
8  clang           0x00000000019b2a4a
9  clang           0x00000000019b3ea5
10 clang           0x00000000019b686d
11 clang           0x00000000019b70b1
12 clang           0x0000000001c51987
llvm::MPPassManager::runOnModule(llvm::Module&) + 503
13 clang           0x0000000001c51b1b llvm::PassManagerImpl::run(llvm::Module&)
+ 187
14 clang           0x0000000000830c41
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*,
clang::BackendAction, llvm::raw_ostream*) + 1505
15 clang           0x000000000082e411
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 353
16 clang           0x000000000097b12f clang::ParseAST(clang::Sema&, bool) + 431
17 clang           0x000000000082cff4 clang::CodeGenAction::ExecuteAction() +
68
18 clang           0x00000000006ec765
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 373
19 clang           0x00000000006d04c9
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1401
20 clang           0x00000000006c6757 cc1_main(char const**, char const**, char
const*, void*) + 791
21 clang           0x00000000006cf297 main + 7175
22 libc.so.6       0x00007ffff6ea9c4d __libc_start_main + 253
23 clang           0x00000000006c4359
Stack dump:
0.    Program arguments: /uusoc/exports/scratch/regehr/z/llvm-install/bin/clang
-cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name
small.c -mrelocation-model static -mdisable-fp-elim -masm-verbose
-mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-linker-version
2.20.1 -momit-leaf-frame-pointer -coverage-file small.o -resource-dir
/uusoc/exports/scratch/regehr/z/llvm-install/bin/../lib/clang/3.1
-fmodule-cache-path /var/tmp/clang-module-cache -I
/opt/intel/composerxe-2011.5.220/mkl/include -I
/opt/intel/composerxe-2011.5.220/tbb/include -internal-isystem
/usr/local/include -internal-isystem
/uusoc/exports/scratch/regehr/z/llvm-install/bin/../lib/clang/3.1/include
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O1
-w -fdebug-compilation-dir /home/regehr/z/volatile/bugs/tmp059 -ferror-limit 19
-fmessage-length 101 -fgnu-runtime -fobjc-runtime-has-arc
-fobjc-runtime-has-weak -fobjc-fragile-abi -fdiagnostics-show-option
-fcolor-diagnostics -o small.o -x c small.c 
1.    <eof> parser at end of file
2.    Per-module optimization passes
3.    Running pass 'Interprocedural Sparse Conditional Constant Propagation' on
module 'small.c'.
clang: error: unable to execute command: Aborted
clang: error: clang frontend command failed due to signal 2 (use -v to see
invocation)
clang: note: diagnostic msg: Please submit a bug report to
http://llvm.org/bugs/ and include command line arguments and all diagnostic
information.
clang: note: diagnostic msg: Preprocessed source(s) and associated run
script(s) are located at:
clang: note: diagnostic msg: /tmp/small-rATpui.i
clang: note: diagnostic msg: /tmp/small-rATpui.sh

[regehr at gamow tmp059]$ cat small.c 


int
func_10 (int si1, int si2)
{
  return 0;
}

int
func_75 (int p_77, int p_78, int p_79)
{
  int l_86;
  int l_108 = 0;
  for (;;)
    {
      int l_109;
      l_109 = l_108 |= l_86;
      l_86 = func_10 (0, l_108 = 1 != l_109);
    }
}

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