| Issue |
126085
|
| Summary |
[VectorCombine] Assertion `I >= 0 && I < (NumOpElts * 2) && "Out-of-bounds shuffle mask element"' failed.
|
| Labels |
crash-on-valid,
llvm:transforms
|
| Assignees |
|
| Reporter |
dtcxzyw
|
Reproducer:
```
; bin/opt -passes=vector-combine reduced.ll -S
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define i32 @test(ptr readonly captures(none) dereferenceable(16) %0) {
%2 = load <16 x i8>, ptr %0, align 1
%.sroa.01.2.vec.insert = shufflevector <16 x i8> %2, <16 x i8> poison, <4 x i32> <i32 0, i32 poison, i32 poison, i32 poison>
%3 = extractelement <16 x i8> %2, i64 11
%.sroa.01.3.vec.insert = insertelement <4 x i8> %.sroa.01.2.vec.insert, i8 %3, i64 1
%4 = bitcast <4 x i8> %.sroa.01.3.vec.insert to i32
ret i32 %4
}
```
```
opt: /home/dtcxzyw/WorkSpace/Projects/compilers/llvm-project/llvm/lib/IR/Instructions.cpp:1890: bool isSingleSourceMaskImpl(llvm::ArrayRef<int>, int): Assertion `I >= 0 && I < (NumOpElts * 2) && "Out-of-bounds shuffle mask element"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0. Program arguments: bin/opt -passes=vector-combine reduced.ll -S
1. Running pass "function(vector-combine)" on module "reduced.ll"
2. Running pass "vector-combine" on function "test"
#0 0x00007f4379a17152 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/libLLVMSupport.so.21.0git+0x217152)
#1 0x00007f4379a1403f llvm::sys::RunSignalHandlers() (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/libLLVMSupport.so.21.0git+0x21403f)
#2 0x00007f4379a1417c SignalHandler(int) Signals.cpp:0:0
#3 0x00007f4379442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#4 0x00007f43794969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
#5 0x00007f43794969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10
#6 0x00007f43794969fc pthread_kill ./nptl/pthread_kill.c:89:10
#7 0x00007f4379442476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
#8 0x00007f43794287f3 abort ./stdlib/abort.c:81:7
#9 0x00007f437942871b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x00007f4379439e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
#11 0x00007f4370e71a16 isSingleSourceMaskImpl(llvm::ArrayRef<int>, int) Instructions.cpp:0:0
#12 0x00007f4370e7c3dc llvm::ShuffleVectorInst::isReverseMask(llvm::ArrayRef<int>, int) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMCore.so.21.0git+0x27c3dc)
#13 0x00007f43788933f2 llvm::X86TTIImpl::getShuffleCost(llvm::TargetTransformInfo::ShuffleKind, llvm::VectorType*, llvm::ArrayRef<int>, llvm::TargetTransformInfo::TargetCostKind, int, llvm::VectorType*, llvm::ArrayRef<llvm::Value const*>, llvm::Instruction const*) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMX86CodeGen.so.21.0git+0x4933f2)
#14 0x00007f43716ddf0c llvm::TargetTransformInfo::getShuffleCost(llvm::TargetTransformInfo::ShuffleKind, llvm::VectorType*, llvm::ArrayRef<int>, llvm::TargetTransformInfo::TargetCostKind, int, llvm::VectorType*, llvm::ArrayRef<llvm::Value const*>, llvm::Instruction const*) const (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMAnalysis.so.21.0git+0x4ddf0c)
#15 0x00007f437224f6e7 (anonymous namespace)::VectorCombine::foldInsExtVectorToShuffle(llvm::Instruction&) VectorCombine.cpp:0:0
#16 0x00007f4372256116 (anonymous namespace)::VectorCombine::run()::'lambda'(llvm::Instruction&)::operator()(llvm::Instruction&) const VectorCombine.cpp:0:0
#17 0x00007f437225787f llvm::VectorCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMVectorize.so.21.0git+0x25787f)
#18 0x00007f4373f225c5 llvm::detail::PassModel<llvm::Function, llvm::VectorCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMPasses.so.21.0git+0x1225c5)
#19 0x00007f4370f10cad llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMCore.so.21.0git+0x310cad)
#20 0x00007f43784dc235 llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMX86CodeGen.so.21.0git+0xdc235)
#21 0x00007f4370f0ee75 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMCore.so.21.0git+0x30ee75)
#22 0x00007f43784dcbf5 llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMX86CodeGen.so.21.0git+0xdcbf5)
#23 0x00007f4370f0fb2a llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/../lib/libLLVMCore.so.21.0git+0x30fb2a)
#24 0x00007f4379ba3dc6 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/libLLVMOptDriver.so.21.0git+0x2fdc6)
#25 0x00007f4379baf5c2 optMain (/home/dtcxzyw/WorkSpace/Projects/compilers/LLVM/llvm-build/bin/../lib/libLLVMOptDriver.so.21.0git+0x3b5c2)
#26 0x00007f4379429d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#27 0x00007f4379429e40 call_init ./csu/../csu/libc-start.c:128:20
#28 0x00007f4379429e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
#29 0x00006293bc5a5095 _start (bin/opt+0x1095)
Aborted (core dumped)
```
Triggered by https://github.com/llvm/llvm-project/pull/121216. cc @ParkHanbum @RKSimon
Reported by https://github.com/dtcxzyw/llvm-opt-benchmark/issues/2093
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