llvmbot
commented
2 months ago @llvm/issue-subscribers-backend-risc-v
Author: Patrick O'Neill (patrick-rivos)
Likely caused by a commit today since godbolt doesn't crash at time of filing bug:
https://godbolt.org/z/965eTfvz7
Using llvm: https://github.com/llvm/llvm-project/commit/3e7135750cfe41e8b093e19ce5b85ad937e064fd
Testcase:
```llvm ir
; ModuleID = 'reduced.bc'
target datalayout = "e-m:e-p:32:32-i64:64-n32-S128"
target triple = "riscv32-unknown-linux-gnu"
; Function Attrs: noinline optnone
define void @d() #0 {
entry:
br label %e
e: ; preds = %e, %entry
call void @llvm.memcpy.p0.p0.i32(ptr null, ptr null, i32 4, i1 false)
br label %e
}
; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i32(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i32, i1 immarg) #1
attributes #0 = { noinline optnone "target-features"="+32bit,+relax,+xsfvcp,+zicsr,+zve32x,+zvl32b,-a,-b,-c,-d,-e,-experimental-smmpm,-experimental-smnpm,-experimental-ssnpm,-experimental-sspm,-experimental-ssqosid,-experimental-supm,-experimental-zacas,-experimental-zalasr,-experimental-zicfilp,-experimental-zicfiss,-f,-h,-m,-shcounterenw,-shgatpa,-shtvala,-shvsatpa,-shvstvala,-shvstvecd,-smaia,-smcdeleg,-smcsrind,-smepmp,-smstateen,-ssaia,-ssccfg,-ssccptr,-sscofpmf,-sscounterenw,-sscsrind,-ssstateen,-ssstrict,-sstc,-sstvala,-sstvecd,-ssu64xl,-svade,-svadu,-svbare,-svinval,-svnapot,-svpbmt,-v,-xcvalu,-xcvbi,-xcvbitmanip,-xcvelw,-xcvmac,-xcvmem,-xcvsimd,-xsfcease,-xsfvfnrclipxfqf,-xsfvfwmaccqqq,-xsfvqmaccdod,-xsfvqmaccqoq,-xsifivecdiscarddlone,-xsifivecflushdlone,-xtheadba,-xtheadbb,-xtheadbs,-xtheadcmo,-xtheadcondmov,-xtheadfmemidx,-xtheadmac,-xtheadmemidx,-xtheadmempair,-xtheadsync,-xtheadvdot,-xventanacondops,-xwchc,-za128rs,-za64rs,-zaamo,-zabha,-zalrsc,-zama16b,-zawrs,-zba,-zbb,-zbc,-zbkb,-zbkc,-zbkx,-zbs,-zca,-zcb,-zcd,-zce,-zcf,-zcmop,-zcmp,-zcmt,-zdinx,-zfa,-zfbfmin,-zfh,-zfhmin,-zfinx,-zhinx,-zhinxmin,-zic64b,-zicbom,-zicbop,-zicboz,-ziccamoa,-ziccif,-zicclsm,-ziccrse,-zicntr,-zicond,-zifencei,-zihintntl,-zihintpause,-zihpm,-zimop,-zk,-zkn,-zknd,-zkne,-zknh,-zkr,-zks,-zksed,-zksh,-zkt,-zmmul,-ztso,-zvbb,-zvbc,-zve32f,-zve64d,-zve64f,-zve64x,-zvfbfmin,-zvfbfwma,-zvfh,-zvfhmin,-zvkb,-zvkg,-zvkn,-zvknc,-zvkned,-zvkng,-zvknha,-zvknhb,-zvks,-zvksc,-zvksed,-zvksg,-zvksh,-zvkt,-zvl1024b,-zvl128b,-zvl16384b,-zvl2048b,-zvl256b,-zvl32768b,-zvl4096b,-zvl512b,-zvl64b,-zvl65536b,-zvl8192b" }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
```
Command/Backtrace:
```
> /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc reduced.ll
llc: /scratch/tc-testing/tc-compiler-fuzz-trunk/llvm/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:7943: llvm::SDValue getMemcpyLoadsAndStores(llvm::SelectionDAG&, const llvm::SDLoc&, llvm::SDValue, llvm::SDValue, llvm::SDValue, uint64_t, llvm::Align, bool, bool, llvm::MachinePointerInfo, llvm::MachinePointerInfo, const llvm::AAMDNodes&, llvm::AAResults*): Assertion `NVT.bitsGE(VT)' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0. Program arguments: /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc reduced.ll
1. Running pass 'Function Pass Manager' on module 'reduced.ll'.
2. Running pass 'RISC-V DAG->DAG Pattern Instruction Selection' on function '@d'
#0 0x00005dbce6188050 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1de1050)
#1 0x00005dbce618546f llvm::sys::RunSignalHandlers() (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1dde46f)
#2 0x00005dbce61855c5 SignalHandler(int) Signals.cpp:0:0
#3 0x000074a1a0042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x000074a1a00969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
#5 0x000074a1a00969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10
#6 0x000074a1a00969fc pthread_kill ./nptl/pthread_kill.c:89:10
#7 0x000074a1a0042476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
#8 0x000074a1a00287f3 abort ./stdlib/abort.c:81:7
#9 0x000074a1a002871b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x000074a1a0039e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#11 0x00005dbce5eeaec5 getMemcpyLoadsAndStores(llvm::SelectionDAG&, llvm::SDLoc const&, llvm::SDValue, llvm::SDValue, llvm::SDValue, unsigned long, llvm::Align, bool, bool, llvm::MachinePointerInfo, llvm::MachinePointerInfo, llvm::AAMDNodes const&, llvm::AAResults*) SelectionDAG.cpp:0:0
#12 0x00005dbce5eeb1a3 llvm::SelectionDAG::getMemcpy(llvm::SDValue, llvm::SDLoc const&, llvm::SDValue, llvm::SDValue, llvm::SDValue, llvm::Align, bool, bool, llvm::CallInst const*, std::optional<bool>, llvm::MachinePointerInfo, llvm::MachinePointerInfo, llvm::AAMDNodes const&, llvm::AAResults*) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1b441a3)
#13 0x00005dbce5e84f44 llvm::SelectionDAGBuilder::visitIntrinsicCall(llvm::CallInst const&, unsigned int) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1addf44)
#14 0x00005dbce5e885bc llvm::SelectionDAGBuilder::visit(llvm::Instruction const&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1ae15bc)
#15 0x00005dbce5f1b284 llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, true, false, void, true, llvm::BasicBlock>, false, true>, llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, true, false, void, true, llvm::BasicBlock>, false, true>, bool&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1b74284)
#16 0x00005dbce5f1c682 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1b75682)
#17 0x00005dbce5f1de57 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1b76e57)
#18 0x00005dbce5f0e389 llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1b67389)
#19 0x00005dbce508ec27 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#20 0x00005dbce56b815c llvm::FPPassManager::runOnFunction(llvm::Function&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x131115c)
#21 0x00005dbce56b8589 llvm::FPPassManager::runOnModule(llvm::Module&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1311589)
#22 0x00005dbce56b7496 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x1310496)
#23 0x00005dbce4992cf6 compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0
#24 0x00005dbce48d6bb6 main (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x52fbb6)
#25 0x000074a1a0029d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#26 0x000074a1a0029e40 call_init ./csu/../csu/libc-start.c:128:20
#27 0x000074a1a0029e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#28 0x00005dbce49895c5 _start (/scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc+0x5e25c5)
zsh: IOT instruction (core dumped) /scratch/tc-testing/tc-compiler-fuzz-trunk/build-gcv/build-llvm-linux/bin/llc
```
Godbolt: https://godbolt.org/z/b37KbvWM9
Found via fuzzer.
preames
Likely caused by a commit today since godbolt doesn't crash at time of filing bug: https://godbolt.org/z/965eTfvz7
Using llvm: https://github.com/llvm/llvm-project/commit/3e7135750cfe41e8b093e19ce5b85ad937e064fd
Testcase:
Command/Backtrace:
Godbolt: https://godbolt.org/z/b37KbvWM9
Found via fuzzer.