| Issue |
108157
|
| Summary |
[mca] crash when attempting to use avx512 on znver4
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
kiroma
|
Given the following assembly (minimized code taken from Intel's histogram example):
```asm
histogram_loop:
vpconflictd zmm0, zmm3
kxnorw k1, k1, k1
vpxord zmm1, zmm1, zmm1
```
A crash occurs
```
$ llvm-mca-18 hist.s -mcpu=znver4 --x86-asm-syntax=intel
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0. Program arguments: llvm-mca-18 hist.s -mcpu=znver4 --x86-asm-syntax=intel
#0 0x00007adbd7194716 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0xd94716)
#1 0x00007adbd71926d0 llvm::sys::RunSignalHandlers() (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0xd926d0)
#2 0x00007adbd7194ddb (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0xd94ddb)
#3 0x00007adbd5c42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007adbd888aec4 llvm::mca::ResourceManager::issueInstruction(llvm::mca::InstrDesc const&, llvm::SmallVectorImpl<std::pair<std::pair<unsigned long, unsigned long>, llvm::mca::ReleaseAtCycles>>&) (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0x248aec4)
#5 0x00007adbd888c0fb llvm::mca::Scheduler::issueInstructionImpl(llvm::mca::InstRef&, llvm::SmallVectorImpl<std::pair<std::pair<unsigned long, unsigned long>, llvm::mca::ReleaseAtCycles>>&) (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0x248c0fb)
#6 0x00007adbd888c31a llvm::mca::Scheduler::issueInstruction(llvm::mca::InstRef&, llvm::SmallVectorImpl<std::pair<std::pair<unsigned long, unsigned long>, llvm::mca::ReleaseAtCycles>>&, llvm::SmallVectorImpl<llvm::mca::InstRef>&, llvm::SmallVectorImpl<llvm::mca::InstRef>&) (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0x248c31a)
#7 0x00007adbd8895756 llvm::mca::ExecuteStage::issueInstruction(llvm::mca::InstRef&) (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0x2495756)
#8 0x00007adbd889615e llvm::mca::ExecuteStage::cycleStart() (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0x249615e)
#9 0x00007adbd8893b1d llvm::mca::Pipeline::runCycle() (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0x2493b1d)
#10 0x00007adbd88939d5 llvm::mca::Pipeline::run() (/lib/x86_64-linux-gnu/libLLVM-18.so.18.1+0x24939d5)
#11 0x000061300efec201 (/usr/lib/llvm-18/bin/llvm-mca+0x16201)
#12 0x000061300efeac8b (/usr/lib/llvm-18/bin/llvm-mca+0x14c8b)
#13 0x00007adbd5c29d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#14 0x00007adbd5c29e40 call_init ./csu/../csu/libc-start.c:128:20
#15 0x00007adbd5c29e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#16 0x000061300efe4675 (/usr/lib/llvm-18/bin/llvm-mca+0xe675)
Segmentation fault (core dumped)
```
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