| Issue |
166775
|
| 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 (-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"
declare void @llvm.experimental.deoptimize.isVoid(...) #0
define void @wombat() #0 gc "statepoint-example" {
bb:
%trunc = trunc i64 0 to i32
br label %bb1
bb1: ; preds = %bb
%or = or i32 %trunc, 0
%zext = zext i32 %or to i64
%and = and i32 0, 0
%or2 = or i32 %trunc, 0
br label %bb3
bb3: ; preds = %bb1
br label %bb4
bb4: ; preds = %bb3
%phi = phi i32 [ %trunc, %bb3 ]
%phi5 = phi i32 [ %or, %bb3 ]
%phi6 = phi i32 [ %and, %bb3 ]
%phi7 = phi i32 [ %or2, %bb3 ]
br label %bb8
bb8: ; preds = %bb4
%phi9 = phi i32 [ %phi5, %bb4 ]
%phi10 = phi i32 [ %phi6, %bb4 ]
%phi11 = phi double [ 0.000000e+00, %bb4 ]
%phi12 = phi i32 [ %phi7, %bb4 ]
%phi13 = phi i32 [ %phi, %bb4 ]
%phi14 = phi double [ 0.000000e+00, %bb4 ]
call void (...) @llvm.experimental.deoptimize.isVoid(i32 0) [ "deopt"([14 x i32] zeroinitializer, i32 %phi5) ]
ret void
}
attributes #0 = { "target-features"="+prfchw,-cldemote,+avx,+aes,+sahf,+pclmul,-xop,+crc32,-amx-fp8,+xsaves,-avx512fp16,-usermsr,-sm4,-egpr,+sse4.1,-avx10.1,-avx512ifma,+xsave,+sse4.2,-tsxldtrk,-sm3,-ptwrite,-widekl,-movrs,-invpcid,+64bit,+xsavec,-avx512vpopcntdq,+cmov,-avx512vp2intersect,-avx512cd,+movbe,-avxvnniint8,-ccmp,-amx-int8,-kl,-sha512,-avxvnni,-rtm,+adx,+avx2,-hreset,-movdiri,-serialize,-vpclmulqdq,-avx512vl,-uintr,-cf,+clflushopt,-raoint,-cmpccxadd,+bmi,-amx-tile,+sse,-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,-avxneconvert,-tbm,-pconfig,-amx-complex,+ssse3,+cx16,-avx10.2,+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/9jrK3bqz9
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 0x00000000059aa7e8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x59aa7e8)
#1 0x00000000059a7694 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#2 0x00007f812ec42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#3 0x00007f812ec969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#4 0x00007f812ec42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#5 0x00007f812ec287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#6 0x0000000000837df9 llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0
#7 0x00000000058d7311 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x58d7311)
#8 0x00000000057c3bc8 (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x57c3bc8)
#9 0x000000000097d28e 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+0x97d28e)
#10 0x0000000005781121 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x5781121)
#11 0x000000000098745a 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, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x98745a)
#12 0x000000000097b6d1 optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x97b6d1)
#13 0x00007f812ec29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#14 0x00007f812ec29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#15 0x0000000000972ae5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x972ae5)
Program terminated with signal: SIGSEGV
Compiler returned: 139
```
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