[LLVMbugs] [Bug 4466] New: assertion failure in X86 AsmPrinter for fast isel

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4466

           Summary: assertion failure in X86 AsmPrinter for fast isel
           Product: libraries
           Version: trunk
          Platform: Macintosh
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: X86
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: bob.wilson at apple.com
                CC: llvmbugs at cs.uiuc.edu


This assertion failure is breaking the llvm-gcc self-hosted buildbot.  I've got
2 separate bugpoint-reduced testcases (one from my build and one from Bill). 
Compiling them with:

llc -disable-fp-elim -relocation-model=pic -O0 -regalloc=local crash1.bc

causes this assertion:

Assertion failed: (!Subtarget->isPICStyleStub() && !Subtarget->isPICStyleGOT()
&& "Should have operand flag!"), function printOperand, file
/Volumes/LocalHD/bwilson/build/llvmCore.roots/llvmCore~obj/src/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp,
line 499.
0   llc               0x007fa0e5 llvm::sys::SetInterruptFunction(void (*)()) +
81
1   llc               0x007fa65b llvm::sys::RemoveFileOnSignal(llvm::sys::Path
const&, std::string*) + 595
2   libSystem.B.dylib 0x901da2bb _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1877106031
4   libSystem.B.dylib 0x9024e23a raise + 26
5   libSystem.B.dylib 0x9025a679 abort + 73
6   libSystem.B.dylib 0x9024f3db __assert_rtn + 101
7   llc               0x0013507c llvm::ThumbInstrInfo::~ThumbInstrInfo() + 6894
8   llc               0x00135cf6 llvm::ThumbInstrInfo::~ThumbInstrInfo() +
10088
9   llc               0x0013604e llvm::ThumbInstrInfo::~ThumbInstrInfo() +
10944
10  llc               0x0013c649 std::map<llvm::Function const*,
llvm::X86MachineFunctionInfo, std::less<llvm::Function const*>,
std::allocator<std::pair<llvm::Function const* const,
llvm::X86MachineFunctionInfo> > >::operator[](llvm::Function const* const&) +
703
11  llc               0x00137476 llvm::ThumbInstrInfo::~ThumbInstrInfo() +
16104
12  llc               0x00138c84 llvm::ThumbInstrInfo::~ThumbInstrInfo() +
22262
13  llc               0x00139447 llvm::ThumbInstrInfo::~ThumbInstrInfo() +
24249
14  llc               0x00562e24
llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 64
15  llc               0x0077512e
llvm::FPPassManager::runOnFunction(llvm::Function&) + 288
16  llc               0x00775650
llvm::FunctionPassManagerImpl::run(llvm::Function&) + 112
17  llc               0x00775820
llvm::FunctionPassManager::run(llvm::Function&) + 156
18  llc               0x000031e1 main + 2981
19  llc               0x00001936 start + 54
Stack dump:
0.      Program arguments:
/Volumes/LocalHD/bwilson/puzzlebox/build/llvmCore.roots/llvmCore~dst/Developer/usr/local/bin/llc
-disable-fp-elim -relocation-model=pic -O0 -regalloc=local crash2.bc 
1.      Running pass 'X86 AT&T-Style Assembly Printer' on function '@main'
Abort trap

The Thumb stuff in the stack trace is very weird.  I would suspect this might
be related to some of the recent Thumb changes, except that when Bill runs it,
he gets SPARC instruction destructors in his stack trace.


-- 
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.