[LLVMbugs] [Bug 12911] New: Assertion `I != r2iMap_.end() && "Interval does not exist for register"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12911

             Bug #: 12911
           Summary: Assertion `I != r2iMap_.end() && "Interval does not
                    exist for register"' failed.
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: All
            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 dyson r57]$ cat small.c
short a;
int b, c, d, e, f, g, h;
void
fn1 ()
{
    short i;
    int j;
    for (; d;)
    {
        for (;;)
        {
            h = c ? 0 : b > 0;
            if (h)
                f = 0;
            if (g)
                break;
            short k = f;
            i = a && k && 1 > -k ? a : a + k;
            j = i;
        }
        e = 0;
        for (; e; ++e)
            if (j)
                break;
    }
}
[regehr at dyson r57]$ clang -v
clang version 3.2 (trunk 157234)
Target: x86_64-unknown-linux-gnu
Thread model: posix
[regehr at dyson r57]$ clang -c -O3 small.c
clang:
/uusoc/exports/scratch/regehr/z/compiler-build/llvm-r157234/include/llvm/CodeGen/LiveIntervalAnalysis.h:114:
llvm::LiveInterval& llvm::LiveIntervals::getInterval(unsigned int): Assertion
`I != r2iMap_.end() && "Interval does not exist for register"' failed.
0  clang           0x0000000001ed18af
1  clang           0x0000000001ed3832
2  libpthread.so.0 0x00007f5936dc28f0
3  libc.so.6       0x00007f59360b1a75 gsignal + 53
4  libc.so.6       0x00007f59360b55c0 abort + 384
5  libc.so.6       0x00007f59360aa941 __assert_fail + 241
6  clang           0x0000000001a85e3e
llvm::LiveRangeEdit::eliminateDeadDefs(llvm::SmallVectorImpl<llvm::MachineInstr*>&,
llvm::ArrayRef<unsigned int>) + 4542
7  clang           0x00000000019da526
8  clang           0x00000000019df879
9  clang           0x00000000019e0792
10 clang           0x00000000019e08fc
11 clang           0x00000000019e17dd
12 clang           0x0000000001e1accd
llvm::FPPassManager::runOnFunction(llvm::Function&) + 557
13 clang           0x0000000001e1adb3
llvm::FPPassManager::runOnModule(llvm::Module&) + 51
14 clang           0x0000000001e1a841
llvm::MPPassManager::runOnModule(llvm::Module&) + 497
15 clang           0x0000000001e1a9bb llvm::PassManagerImpl::run(llvm::Module&)
+ 171
16 clang           0x00000000007cc5bc
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*,
clang::BackendAction, llvm::raw_ostream*) + 1532
17 clang           0x00000000007c9b79
18 clang           0x000000000092d381 clang::ParseAST(clang::Sema&, bool, bool)
+ 481
19 clang           0x00000000007c8584 clang::CodeGenAction::ExecuteAction() +
68
20 clang           0x00000000006722e1
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 337
21 clang           0x000000000065b0f4
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1348
22 clang           0x0000000000650f88 cc1_main(char const**, char const**, char
const*, void*) + 968
23 clang           0x0000000000659ed1 main + 7313
24 libc.so.6       0x00007f593609cc4d __libc_start_main + 253
25 clang           0x000000000064e9a9
Stack dump:
0.    Program arguments:
/uusoc/exports/scratch/regehr/z/compiler-install/llvm-gcc-r157234-install/bin/clang
-cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name
small.c -mrelocation-model static -fmath-errno -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/compiler-install/llvm-gcc-r157234-install/bin/../lib/clang/3.2
-fmodule-cache-path /var/tmp/clang-module-cache -internal-isystem
/usr/local/include -internal-isystem
/uusoc/exports/scratch/regehr/z/compiler-install/llvm-gcc-r157234-install/bin/../lib/clang/3.2/include
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O3
-fdebug-compilation-dir /home/regehr/z/reduce/r57 -ferror-limit 19
-fmessage-length 83 -mstackrealign -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.    Code generation
3.    Running pass 'Function Pass Manager' on module 'small.c'.
4.    Running pass 'Simple Register Coalescing' on function '@fn1'
clang: error: unable to execute command: Aborted
clang: error: clang frontend command failed due to signal (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-7V56bZ.i
clang: note: diagnostic msg: /tmp/small-7V56bZ.sh

-- 
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.