[LLVMbugs] [Bug 12203] New: Assertion fail in PPC frame pointer elimination

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12203

             Bug #: 12203
           Summary: Assertion fail in PPC frame pointer elimination
           Product: libraries
           Version: trunk
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: PowerPC
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: ggreif at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 8149
  --> http://llvm.org/bugs/attachment.cgi?id=8149
Compressed bitcode file. Sorry, but do not know how to reduce it.

With the attached .bc file I get:

$ bin/llc pSh_ReadDb.bc
llc: PPCRegisterInfo.cpp:674: virtual void
llvm::PPCRegisterInfo::eliminateFrameIndex(llvm::MachineBasicBlock::bundle_iterator<llvm::MachineInstr,
llvm::ilist_iterator<llvm::MachineInstr> >, int, llvm::RegScavenger*) const:
Assertion `ImmToIdxMap.count(OpC) && "No indexed form of load or store
available!"' failed.
0  libLLVM-3.1svn.so 0x00002b5cc676f93f
1  libLLVM-3.1svn.so 0x00002b5cc6771ba2
2  libpthread.so.0   0x000000375a80eb70
3  libc.so.6         0x0000003759c30265 gsignal + 53
4  libc.so.6         0x0000003759c31d10 abort + 272
5  libc.so.6         0x0000003759c296e6 __assert_fail + 246
6  libLLVM-3.1svn.so 0x00002b5cc64cc9ef
llvm::PPCRegisterInfo::eliminateFrameIndex(llvm::MachineBasicBlock::bundle_iterator<llvm::MachineInstr,
llvm::ilist_iterator<llvm::MachineInstr> >, int, llvm::RegScavenger*) const +
1647
7  libLLVM-3.1svn.so 0x00002b5cc61207d7
llvm::PEI::replaceFrameIndices(llvm::MachineFunction&) + 1127
8  libLLVM-3.1svn.so 0x00002b5cc6123e81
llvm::PEI::runOnMachineFunction(llvm::MachineFunction&) + 273
9  libLLVM-3.1svn.so 0x00002b5cc62b1bcb
llvm::FPPassManager::runOnFunction(llvm::Function&) + 587
10 libLLVM-3.1svn.so 0x00002b5cc62b1cb3
llvm::FPPassManager::runOnModule(llvm::Module&) + 51
11 libLLVM-3.1svn.so 0x00002b5cc62b2601
llvm::MPPassManager::runOnModule(llvm::Module&) + 497
12 libLLVM-3.1svn.so 0x00002b5cc62b29ab
llvm::PassManagerImpl::run(llvm::Module&) + 187
13 llc               0x0000000000408eea main + 5034
14 libc.so.6         0x0000003759c1d994 __libc_start_main + 244
15 llc               0x0000000000404ac9
llvm::cl::generic_parser_base::printOptionInfo(llvm::cl::Option const&,
unsigned long) const + 1129
Stack dump:
0.      Program arguments:
/view/ggreif-tmp-nb-DREAM/phys/mfs/hc_rap/tools/bin/llc pSh_ReadDb.bc 
1.      Running pass 'Function Pass Manager' on module 'pSh_ReadDb.bc'.
2.      Running pass 'Prolog/Epilog Insertion & Frame Finalization' on function
'@_Z21fw_initPshellCommandsv'
Aborted

My toolset was configured for PowerPC only from trunk but it is a few weeks
old.

The original clang invocation was (roughly) like this:


bin/clang++ -c -g -O2 -pipe -Wall -pthread -D_XOPEN_SOURCE=500 -D_SVID_SOURCE
-D_BSD_SOURCE -D__TARGET_ENV__ -DTGT_PPC -DXGS -DSONET_APS -include
/phys/mfs/hc_clic/include/nemo/config-linux-ppc-85xx.h -include
/phys/mfs/hc_clic/include/nemo/unixcompat.h -DSIM=1 -D_DTF_ -Wno-unused
-Wno-error -DOS_LINUX -Wno-error
-I/phys/mfs/G5fw/PROJECT/SEGM/G5fw/G5fwProcSkel/ProcSkel
"-DMACHINE_FILE=<BasicS/lin_ix86-gnu.h>" -Dsim_for_linux -Dsim_for_ppc
-Dsim_for_pq2 -DCOMPILER_VERSION="\"Gnu v3.4.3\"" -DDEBUG -DTRACEON -DGBOS
-DNOSCCSID -Dwant_traceid_G5fw -DFRAMEWORK -DSEGMENT=\"G5fw\"
-DSUBSYSTEM=\"G5fwProcSkel\" -DCOMPONENT=\"ProcSkel\"  pSh_ReadDb.cc -o
pSh_ReadDb.o

Note: I also tried to invoke it with "-g" removed and then the compilation
succeeded.

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