| Issue |
137797
|
| Summary |
Instruction does not dominate all uses! LLVM ERROR: Broken module found, compilation aborted!
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
TatyanaDoubts
|
To reproduce run opt with the test below using -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() #0 gc "statepoint-example" {
bb:
br i1 false, label %bb1, label %bb5
bb1: ; preds = %bb1, %bb
%phi = phi i32 [ %or4, %bb1 ], [ 0, %bb ]
%phi2 = phi i32 [ %add, %bb1 ], [ 0, %bb ]
%add = add i32 1, 0
%or = or i32 0, %phi2
%or3 = or i32 %or, 0
%mul = mul i32 0, 0
%or4 = or i32 %phi, %mul
br i1 false, label %bb1, label %bb5
bb5: ; preds = %bb1, %bb
%phi6 = phi i32 [ 0, %bb ], [ %or4, %bb1 ]
%phi7 = phi i32 [ 0, %bb ], [ %or, %bb1 ]
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,+evex512,-avxvnni,+rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-sha512,-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,-avx512f" }
```
Reproducer: https://godbolt.org/z/YbPKn761h
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 "verify" on module "<source>"
#0 0x00000000055242e8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x55242e8)
#1 0x0000000005521c74 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#2 0x000073e542242520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#3 0x000073e5422969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#4 0x000073e542242476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#5 0x000073e5422287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#6 0x000000000080a091 llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0
#7 0x00000000054600e8 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x54600e8)
#8 0x000000000535c8d8 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x535c8d8)
#9 0x000000000093ee6e llvm::detail::PassModel<llvm::Module, llvm::VerifierPass, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x93ee6e)
#10 0x000000000531b5a0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x531b5a0)
#11 0x00000000009492ba 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+0x9492ba)
#12 0x000000000093ca8c optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x93ca8c)
#13 0x000073e542229d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#14 0x000073e542229e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#15 0x00000000009346c5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x9346c5)
Program terminated with signal: SIGSEGV
Compiler returned: 139
```
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