| Issue |
133288
|
| Summary |
slpvectorizer crash
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
TatyanaDoubts
|
To reproduce run opt with the test below with -passes=slp-vectorizer -slp-threshold=-99999
```
; ModuleID = './reduced.ll'
source_filename = "./reduced.ll"
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-ni:1-p2:32:8:8:32-ni:2"
target triple = "x86_64-unknown-linux-gnu"
define void @wombat(i32 %arg) #0 gc "statepoint-example" {
bb:
%load = load i32, ptr addrspace(3) null, align 4
%load1 = load i32, ptr addrspace(3) null, align 4
%load2 = load i32, ptr addrspace(3) null, align 4
%load3 = load i32, ptr addrspace(3) null, align 4
br label %bb4
bb4: ; preds = %bb
switch i32 0, label %bb8 [
i32 0, label %bb7
i32 1, label %bb21
]
bb5: ; No predecessors!
%srem = srem i32 0, 0
br label %bb21
bb6: ; No predecessors!
br label %bb12
bb7: ; preds = %bb4
ret void
bb8: ; preds = %bb4
%phi = phi i32 [ 0, %bb4 ]
%phi9 = phi i32 [ 0, %bb4 ]
%phi10 = phi i32 [ 0, %bb4 ]
%phi11 = phi i32 [ 0, %bb4 ]
br label %bb12
bb12: ; preds = %bb8, %bb6
%phi13 = phi i32 [ %load, %bb8 ], [ 0, %bb6 ]
%phi14 = phi i32 [ %load1, %bb8 ], [ 0, %bb6 ]
%phi15 = phi i32 [ %load2, %bb8 ], [ %arg, %bb6 ]
%phi16 = phi i32 [ %load3, %bb8 ], [ 0, %bb6 ]
%phi17 = phi i32 [ %phi, %bb8 ], [ %srem, %bb6 ]
%phi18 = phi i32 [ %phi11, %bb8 ], [ 0, %bb6 ]
%phi19 = phi i32 [ %phi9, %bb8 ], [ 0, %bb6 ]
%phi20 = phi i32 [ %phi10, %bb8 ], [ 0, %bb6 ]
ret void
bb21: ; preds = %bb5, %bb4
ret void
}
attributes #0 = { "target-features"="+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,-amx-fp8,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,-movrs,-invpcid,+64bit,+xsavec,-avx10.1-512,-avx512vpopcntdq,+cmov,-avx512vp2intersect,-avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-avx10.1-256,-sha512,-avxvnni,-rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-vpclmulqdq,-avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-avx10.2-256,-gfni,-avxvnniint16,-amx-fp16,-zu,-ndd,+xsaveopt,+rdrnd,-avx512f,-amx-bf16,-avx512bf16,-avx512vnni,-push2pop2,+cx8,-avx512bw,+sse3,-pku,-nf,-amx-tf32,-amx-avx512,+fsgsbase,+clzero,-mwaitx,-lwp,+lzcnt,+sha,-movdir64b,-ppx,+wbnoinvd,-enqcmd,-amx-transpose,-avx10.2-512,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,+bmi2,+fma,+popcnt,-avxifma,+f16c,-avx512bitalg,-rdpru,+clwb,+mmx,+sse2,+rdseed,-avx512vbmi2,-prefetchi,-amx-movrs,+rdpid,-fma4,-avx512vbmi,-shstk,-vaes,-waitpkg,-sgx,+fxsr,-avx512dq,+sse4a" }
```
Reproducer: https://godbolt.org/z/1E6shqxdd
Stack dump:
```
0. Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=slp-vectorizer -slp-threshold=-99999 <source>
1. Running pass "function(slp-vectorizer)" on module "<source>"
2. Running pass "slp-vectorizer" on function "wombat"
#0 0x000000000549f758 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x549f758)
#1 0x000000000549d0e4 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#2 0x00007d8bfda42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#3 0x00000000017c9e90 llvm::BasicBlock::getTerminator() const (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x17c9e90)
#4 0x0000000004492866 llvm::slpvectorizer::BoUpSLP::getSpillCost() (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4492866)
#5 0x00000000044fbea8 llvm::slpvectorizer::BoUpSLP::getTreeCost(llvm::ArrayRef<llvm::Value*>, llvm::InstructionCost) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x44fbea8)
#6 0x0000000004504152 llvm::SLPVectorizerPass::tryToVectorizeList(llvm::ArrayRef<llvm::Value*>, llvm::slpvectorizer::BoUpSLP&, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4504152)
#7 0x000000000450937d bool tryToVectorizeSequence<llvm::Value>(llvm::SmallVectorImpl<llvm::Value*>&, llvm::function_ref<bool (llvm::Value*, llvm::Value*)>, llvm::function_ref<bool (llvm::Value*, llvm::Value*)>, llvm::function_ref<bool (llvm::ArrayRef<llvm::Value*>, bool)>, bool, llvm::slpvectorizer::BoUpSLP&) (.constprop.0) SLPVectorizer.cpp:0:0
#8 0x000000000450ad55 llvm::SLPVectorizerPass::vectorizeChainsInBlock(llvm::BasicBlock*, llvm::slpvectorizer::BoUpSLP&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x450ad55)
#9 0x0000000004512cbe llvm::SLPVectorizerPass::runImpl(llvm::Function&, llvm::ScalarEvolution*, llvm::TargetTransformInfo*, llvm::TargetLibraryInfo*, llvm::AAResults*, llvm::LoopInfo*, llvm::DominatorTree*, llvm::AssumptionCache*, llvm::DemandedBits*, llvm::OptimizationRemarkEmitter*) (.part.0) SLPVectorizer.cpp:0:0
#10 0x000000000451387b llvm::SLPVectorizerPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x451387b)
#11 0x00000000031ad81e llvm::detail::PassModel<llvm::Function, llvm::SLPVectorizerPass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x31ad81e)
#12 0x000000000529b7a0 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x529b7a0)
#13 0x0000000000e7a28e llvm::detail::PassModel<llvm::Function, llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe7a28e)
#14 0x000000000529a073 llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x529a073)
#15 0x0000000000e792ae llvm::detail::PassModel<llvm::Module, llvm::ModuleToFunctionPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0xe792ae)
#16 0x0000000005299a80 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x5299a80)
#17 0x000000000093f60a 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) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x93f60a)
#18 0x0000000000932cfc optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x932cfc)
#19 0x00007d8bfda29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#20 0x00007d8bfda29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#21 0x000000000092a935 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x92a935)
Program terminated with signal: SIGSEGV
Compiler returned: 139
```
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