| Bug ID | 105869 |
|---|---|
| Summary | clang crashes when compiling OpenCL kernel |
| Product | Mesa |
| Version | git |
| Hardware | Other |
| OS | All |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | Drivers/Gallium/radeonsi |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | vedran@miletic.net |
| QA Contact | dri-devel@lists.freedesktop.org |
(from #radeon and https://paste.debian.net/1018363/) When compiling the following OpenCL kernel kernel void PulseWave(global float* buffer, size_t num_harmonics, float duty_cycle) { size_t index = get_global_id(0); float phase = buffer[index]; float sample = duty_cycle; float precompute1 = (phase - duty_cycle / 2.0) * 2.0 * M_PI; for (size_t i = 1; i <= num_harmonics; ++i) { float harmonic = 2.0 / (i * M_PI) * sin(M_PI * i * duty_cycle) * cos(i * precompute1); sample += harmonic; } buffer[index] = sample * 2.0 - 1.0; } Clang will crash with Thread 1 "ftz_chiptune_pu" received signal SIGSEGV, Segmentation fault. 0x00007fffe6501ba1 in llvm::LiveRange::find(llvm::SlotIndex) () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 (gdb) bt #0 0x00007fffe6501ba1 in llvm::LiveRange::find(llvm::SlotIndex) () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #1 0x00007fffe66674a1 in ?? () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #2 0x00007fffe66676c1 in ?? () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #3 0x00007fffe66697e5 in llvm::RegPressureTracker::getLiveThroughAt(unsigned int, llvm::SlotIndex) const () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #4 0x00007fffe6669af1 in llvm::RegPressureTracker::recede(llvm::RegisterOperands const&, llvm::SmallVectorImpl<llvm::RegisterMaskPair>*) () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #5 0x00007fffe66a0229 in llvm::ScheduleDAGInstrs::buildSchedGraph(llvm::AAResults*, llvm::RegPressureTracker*, llvm::PressureDiffs*, llvm::LiveIntervals*, bool) () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #6 0x00007fffe65e7653 in llvm::ScheduleDAGMILive::buildDAGWithRegPressure() () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #7 0x00007fffe65e76b9 in llvm::ScheduleDAGMILive::schedule() () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #8 0x00007fffe758e501 in llvm::GCNScheduleDAGMILive::schedule() () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #9 0x00007fffe758e26e in llvm::GCNScheduleDAGMILive::finalizeSchedule() () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #10 0x00007fffe65e6fa7 in ?? () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #11 0x00007fffe657cae0 in llvm::MachineFunctionPass::runOnFunction(llvm::Function&) () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #12 0x00007fffe63deac8 in llvm::FPPassManager::runOnFunction(llvm::Function&) () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #13 0x00007fffe6fb7b50 in ?? () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #14 0x00007fffe63de3af in llvm::legacy::PassManagerImpl::run(llvm::Module&) () from /usr/lib/x86_64-linux-gnu/libLLVM-5.0.so.1 #15 0x00007ffff42227ce in ?? () from /usr/lib/x86_64-linux-gnu/libMesaOpenCL.so.1 #16 0x00007ffff4222ed0 in ?? () from /usr/lib/x86_64-linux-gnu/libMesaOpenCL.so.1 #17 0x00007ffff421e6a7 in ?? () from /usr/lib/x86_64-linux-gnu/libMesaOpenCL.so.1 #18 0x00007ffff420fea1 in ?? () from /usr/lib/x86_64-linux-gnu/libMesaOpenCL.so.1 #19 0x00007ffff41efe02 in ?? () from /usr/lib/x86_64-linux-gnu/libMesaOpenCL.so.1 #20 0x0000555555561129 in cl::Program::build (this=0x7fffffffde10, options=0x0, notifyFptr=0x0, data="" at /usr/include/CL/cl2.hpp:6321
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