search

libmir / mir-ion

Ion, JSON, YAML, CSV, CBOR and Msgpack serialization framework
Apache License 2.0
14 stars 6 forks source link

internal/stage2.d: Use processor extensions in @target #46

Closed the-horo closed 4 months ago

the-horo commented 5 months ago

With ldc2 -mcpu= or -mattr= can cause llvm internal errors:

SplitVectorResult #0: t15: v64i8 = llvm.x86.avx512.pshuf.b.512 TargetConstant:i64<11062>, t12, t13

LLVM ERROR: Do not know how to split the result of this operator!
 #0 0x00007f8cddc05505 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/lib/llvm/17/lib64/libLLVM-17.so+0xa05505)
 #1 0x00007f8cddc02d8f llvm::sys::RunSignalHandlers() (/usr/lib/llvm/17/lib64/libLLVM-17.so+0xa02d8f)
 #2 0x00007f8cddc02f16 (/usr/lib/llvm/17/lib64/libLLVM-17.so+0xa02f16)
 #3 0x00007f8cdc793930 (/usr/lib64/libc.so.6+0x3a930)
 #4 0x00007f8cdc7e4e9c (/usr/lib64/libc.so.6+0x8be9c)
 #5 0x00007f8cdc793886 gsignal (/usr/lib64/libc.so.6+0x3a886)
 #6 0x00007f8cdc77b8b7 abort (/usr/lib64/libc.so.6+0x228b7)
 #7 0x00007f8cdd6d6c8c (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x4d6c8c)
 #8 0x00007f8cddb2f9f5 llvm::report_fatal_error(char const*, bool) (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x92f9f5)
 #9 0x00007f8cde6d27c3 (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x14d27c3)
#10 0x00007f8cde66ded2 (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x146ded2)
#11 0x00007f8cde66ec16 llvm::SelectionDAG::LegalizeTypes() (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x146ec16)
#12 0x00007f8cde7e377a llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x15e377a)
#13 0x00007f8cde7e8fe3 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x15e8fe3)
#14 0x00007f8cde7ea7e6 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x15ea7e6)
#15 0x00007f8ce1c2c089 (/usr/lib/llvm/17/lib64/libLLVM-17.so+0x4a2c089)
#16 0x00007f8cde131951 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (/usr/lib/llvm/17/lib64/libLLVM-17.so+0xf31951)
#17 0x00007f8cdddb4d0b llvm::FPPassManager::runOnFunction(llvm::Function&) (/usr/lib/llvm/17/lib64/libLLVM-17.so+0xbb4d0b)
#18 0x00007f8cdddb4f51 llvm::FPPassManager::runOnModule(llvm::Module&) (/usr/lib/llvm/17/lib64/libLLVM-17.so+0xbb4f51)
#19 0x00007f8cdddb59fd llvm::legacy::PassManagerImpl::run(llvm::Module&) (/usr/lib/llvm/17/lib64/libLLVM-17.so+0xbb59fd)
#20 0x000055a87ffc129b (anonymous namespace)::codegenModule(llvm::TargetMachine&, llvm::Module&, char const*, llvm::CodeGenFileType) /mnt/git/ldc/driver/toobj.cpp:146:14
#21 0x000055a87ffc2115 (anonymous namespace)::writeObjectFile(llvm::Module*, char const*) /mnt/git/ldc/driver/toobj.cpp:304:1
#22 0x000055a87ffc33ad writeModule(llvm::Module*, char const*) /mnt/git/ldc/driver/toobj.cpp:499:5
#23 0x000055a87ffbc291 ldc::CodeGenerator::writeAndFreeLLModule(char const*) /mnt/git/ldc/driver/codegenerator.cpp:295:7
#24 0x000055a87ffbbff7 ldc::CodeGenerator::finishLLModule(Module*) /mnt/git/ldc/driver/codegenerator.cpp:259:23
#25 0x000055a87ffbc507 ldc::CodeGenerator::emit(Module*) /mnt/git/ldc/driver/codegenerator.cpp:326:10
#26 0x000055a87ff74b5a codegenModules(Array<Module*>&) /mnt/git/ldc/driver/main.cpp:1304:7
#27 0x000055a87fc74731 mars_mainBody(Param&, Array<char const*>&, Array<char const*>&) /mnt/git/ldc/dmd/main.d:759:9
#28 0x000055a87ff74695 cppmain() /mnt/git/ldc/driver/main.cpp:1243:27
#29 0x000055a87fd905af D main /mnt/git/ldc/driver/main.d:28:1
#30 0x00007f8cdcf6f173 (/usr/lib/gcc/x86_64-pc-linux-gnu/13/libgphobos.so.4+0x56f173)
#31 0x00007f8cdcf6f82d (/usr/lib/gcc/x86_64-pc-linux-gnu/13/libgphobos.so.4+0x56f82d)
#32 0x00007f8cdcf6fa59 _d_run_main2 (/usr/lib/gcc/x86_64-pc-linux-gnu/13/libgphobos.so.4+0x56fa59)
#33 0x00007f8cdcf6fc27 _d_run_main (/usr/lib/gcc/x86_64-pc-linux-gnu/13/libgphobos.so.4+0x56fc27)
#34 0x000055a87ffb0efb args::forwardToDruntime(int, char const**) /mnt/git/ldc/driver/args.cpp:82:1
#35 0x000055a87ff73f3f main /mnt/git/ldc/driver/main.cpp:1123:33
#36 0x00007f8cdc77d2e0 (/usr/lib64/libc.so.6+0x242e0)
#37 0x00007f8cdc77d399 __libc_start_main (/usr/lib64/libc.so.6+0x24399)
#38 0x000055a87f9ae785 _start (/root/ldc-build/bin/ldc2+0x580785)

To reproduce this issue is should be enough to do:

DFLAGS='-mattr=-avx' dub build --compiler=ldc2

A fix seems to only use intrinsics that the target supports rather than using all of them and deciding at runtime which ones to use.

I've changed sse4.2 to ssse3 since this is what the intrinsics require., I'm not sure if this is a problem. I've hit this issue initially trying to compile serve-d with ldc2 and -mcpu=native.