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Assertion Failure in Vector Combine #110382

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Zentrik opened this issue Sep 28, 2024 · 4 comments · Fixed by #111635
Closed

Assertion Failure in Vector Combine #110382

Zentrik opened this issue Sep 28, 2024 · 4 comments · Fixed by #111635
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@davemgreen
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crash Prefer [crash-on-valid] or [crash-on-invalid] release:backport vectorizers
Milestone
LLVM 19.X Release

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@Zentrik
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Zentrik commented Sep 28, 2024

Runnning vector-combine pass on

source_filename = "text"
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:10:11:12:13"
target triple = "x86_64-unknown-linux-gnu"

define nonnull ptr addrspace(10) @wombat() {
  %call = call <4 x i64> @llvm.fshl.v4i64(<4 x i64> zeroinitializer, <4 x i64> zeroinitializer, <4 x i64> <i64 45, i64 45, i64 45, i64 45>) [ "jl_roots"(ptr addrspace(10) null, ptr addrspace(10) null) ]
  %shufflevector = shufflevector <4 x i64> %call, <4 x i64> poison, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
  %shufflevector1 = shufflevector <16 x i64> %shufflevector, <16 x i64> undef, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
  ret ptr addrspace(10) null
}

declare <4 x i64> @llvm.fshl.v4i64(<4 x i64>, <4 x i64>, <4 x i64>)

produces

opt: /root/llvm-project/llvm/include/llvm/Support/Casting.h:578: decltype(auto) llvm::cast(From*) [with To = llvm::FixedVectorType; From = llvm::Type]: Assertion `isa<To>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=vector-combine <source>
1.	Running pass "function(vector-combine)" on module "<source>"
2.	Running pass "vector-combine" on function "wombat"
 #0 0x0000000005079b38 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x5079b38)
 #1 0x00000000050774ec SignalHandler(int) Signals.cpp:0:0
 #2 0x000074d0dce42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #3 0x000074d0dce969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #4 0x000074d0dce42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #5 0x000074d0dce287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #6 0x000074d0dce2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #7 0x000074d0dce39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #8 0x0000000004186458 (anonymous namespace)::VectorCombine::foldShuffleToIdentity(llvm::Instruction&) VectorCombine.cpp:0:0
 #9 0x0000000004190f01 (anonymous namespace)::VectorCombine::run()::'lambda'(llvm::Instruction&)::operator()(llvm::Instruction&) const (.isra.0) VectorCombine.cpp:0:0
#10 0x0000000004191c25 llvm::VectorCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4191c25)
#11 0x0000000002f2defe llvm::detail::PassModel<llvm::Function, llvm::VectorCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2f2defe)
#12 0x0000000004e7c978 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7c978)
#13 0x0000000000e157ce 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+0xe157ce)
#14 0x0000000004e7b39e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7b39e)
#15 0x0000000000e14f7e 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+0xe14f7e)
#16 0x0000000004e7add0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7add0)
#17 0x0000000000904cc2 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+0x904cc2)
#18 0x00000000008f7b4c optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8f7b4c)
#19 0x000074d0dce29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#20 0x000074d0dce29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#21 0x00000000008ef61e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8ef61e)
Program terminated with signal: SIGSEGV
Compiler returned: 139

Godbolt: https://godbolt.org/z/MGefYs3M5
@EugeneZelenko EugeneZelenko added the crash Prefer [crash-on-valid] or [crash-on-invalid] label Sep 28, 2024
@Heresh83
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Runnning vector-combine pass on

source_filename = "text"
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:10:11:12:13"
target triple = "x86_64-unknown-linux-gnu"

define nonnull ptr addrspace(10) @wombat() {
  %call = call <4 x i64> @llvm.fshl.v4i64(<4 x i64> zeroinitializer, <4 x i64> zeroinitializer, <4 x i64> <i64 45, i64 45, i64 45, i64 45>) [ "jl_roots"(ptr addrspace(10) null, ptr addrspace(10) null) ]
  %shufflevector = shufflevector <4 x i64> %call, <4 x i64> poison, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
  %shufflevector1 = shufflevector <16 x i64> %shufflevector, <16 x i64> undef, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
  ret ptr addrspace(10) null
}

declare <4 x i64> @llvm.fshl.v4i64(<4 x i64>, <4 x i64>, <4 x i64>)

produces

opt: /root/llvm-project/llvm/include/llvm/Support/Casting.h:578: decltype(auto) llvm::cast(From*) [with To = llvm::FixedVectorType; From = llvm::Type]: Assertion `isa<To>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/opt -o /app/output.s -S -passes=vector-combine <source>
1.	Running pass "function(vector-combine)" on module "<source>"
2.	Running pass "vector-combine" on function "wombat"
 #0 0x0000000005079b38 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x5079b38)
 #1 0x00000000050774ec SignalHandler(int) Signals.cpp:0:0
 #2 0x000074d0dce42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #3 0x000074d0dce969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #4 0x000074d0dce42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #5 0x000074d0dce287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #6 0x000074d0dce2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #7 0x000074d0dce39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #8 0x0000000004186458 (anonymous namespace)::VectorCombine::foldShuffleToIdentity(llvm::Instruction&) VectorCombine.cpp:0:0
 #9 0x0000000004190f01 (anonymous namespace)::VectorCombine::run()::'lambda'(llvm::Instruction&)::operator()(llvm::Instruction&) const (.isra.0) VectorCombine.cpp:0:0
#10 0x0000000004191c25 llvm::VectorCombinePass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4191c25)
#11 0x0000000002f2defe llvm::detail::PassModel<llvm::Function, llvm::VectorCombinePass, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x2f2defe)
#12 0x0000000004e7c978 llvm::PassManager<llvm::Function, llvm::AnalysisManager<llvm::Function>>::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7c978)
#13 0x0000000000e157ce 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+0xe157ce)
#14 0x0000000004e7b39e llvm::ModuleToFunctionPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7b39e)
#15 0x0000000000e14f7e 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+0xe14f7e)
#16 0x0000000004e7add0 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x4e7add0)
#17 0x0000000000904cc2 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+0x904cc2)
#18 0x00000000008f7b4c optMain (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8f7b4c)
#19 0x000074d0dce29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#20 0x000074d0dce29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#21 0x00000000008ef61e _start (/opt/compiler-explorer/clang-assertions-trunk/bin/opt+0x8ef61e)
Program terminated with signal: SIGSEGV
Compiler returned: 139

Godbolt: https://godbolt.org/z/MGefYs3M5

@RKSimon
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RKSimon commented Sep 30, 2024

Looks like foldShuffleToIdentity is attempting to fold the operand bundle on the fshl call

This was referenced Oct 8, 2024
Merged
Merged
davemgreen added a commit to davemgreen/llvm-project that referenced this issue Oct 9, 2024
@davemgreen
[VectorCombine] Do not try to operate on OperandBundles.
7e526b4 
This bails out if we see an intrinsic with an operand bundle on it, to make
sure we don't process the bundles incorrectly.

Fixes llvm#110382.
@davemgreen davemgreen mentioned this issue Oct 9, 2024
Merged
davemgreen added a commit to davemgreen/llvm-project that referenced this issue Oct 9, 2024
@davemgreen
[VectorCombine] Do not try to operate on OperandBundles.
c3ca15a 
This bails out if we see an intrinsic with an operand bundle on it, to make
sure we don't process the bundles incorrectly.

Fixes llvm#110382.
Zentrik pushed a commit to Zentrik/llvm-project that referenced this issue Oct 9, 2024
@davemgreen @Zentrik
[VectorCombine] Do not try to operate on OperandBundles. (llvm#111635)
5c8359f 
This bails out if we see an intrinsic with an operand bundle on it, to
make sure we don't process the bundles incorrectly.

Fixes llvm#110382.
giordano pushed a commit to JuliaLang/llvm-project that referenced this issue Oct 9, 2024
@davemgreen @giordano
[VectorCombine] Do not try to operate on OperandBundles. (llvm#111635)
002f0fd 
This bails out if we see an intrinsic with an operand bundle on it, to
make sure we don't process the bundles incorrectly.

Fixes llvm#110382.
giordano pushed a commit to JuliaLang/llvm-project that referenced this issue Oct 9, 2024
@davemgreen @giordano
[VectorCombine] Do not try to operate on OperandBundles. (llvm#111635)
5c7d9f6 
This bails out if we see an intrinsic with an operand bundle on it, to
make sure we don't process the bundles incorrectly.

Fixes llvm#110382.
@davemgreen davemgreen reopened this Oct 10, 2024
@davemgreen davemgreen added this to the LLVM 19.X Release milestone Oct 10, 2024
@davemgreen
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/cherry-pick c136d32

llvmbot pushed a commit to llvmbot/llvm-project that referenced this issue Oct 10, 2024
@davemgreen @llvmbot
[VectorCombine] Do not try to operate on OperandBundles. (llvm#111635)
b64f290 
This bails out if we see an intrinsic with an operand bundle on it, to
make sure we don't process the bundles incorrectly.

Fixes llvm#110382.

(cherry picked from commit c136d32)
@llvmbot llvmbot closed this as completed Oct 10, 2024
@llvmbot
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llvmbot commented Oct 10, 2024

/pull-request #111796

@giordano giordano mentioned this issue Oct 11, 2024
Merged
tru pushed a commit to llvmbot/llvm-project that referenced this issue Oct 15, 2024
@davemgreen @tru
[VectorCombine] Do not try to operate on OperandBundles. (llvm#111635)
8cb7d8a 
This bails out if we see an intrinsic with an operand bundle on it, to
make sure we don't process the bundles incorrectly.

Fixes llvm#110382.

(cherry picked from commit c136d32)
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Labels
crash Prefer [crash-on-valid] or [crash-on-invalid] release:backport vectorizers
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LLVM Release Status
Status: Done
Milestone
LLVM 19.X Release
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[VectorCombine] Do not try to operate on OperandBundles. davemgreen/llvm-project
6 participants
@RKSimon @EugeneZelenko @davemgreen @Zentrik @llvmbot @Heresh83