[llvm] [X86] combineINSERT_SUBVECTOR - fold insert_subvector(base,extract_subvector(broadcast)) -> blend shuffle(base,broadcast) (PR #133083)

Thu Mar 27 03:55:46 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ppc64le-lld-multistage-test` running on `ppc64le-lld-multistage-test` while building `llvm` at step 12 "build-stage2-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/168/builds/10220

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 12 (build-stage2-unified-tree) failure: build (failure)
...
445.760 [856/178/5476] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64Subtarget.cpp.o
445.822 [856/177/5477] Building CXX object lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o
445.824 [856/176/5478] Building CXX object tools/clang/unittests/ASTMatchers/Dynamic/CMakeFiles/DynamicASTMatchersTests.dir/VariantValueTest.cpp.o
445.826 [856/175/5479] Building CXX object tools/clang/unittests/Analysis/CMakeFiles/ClangAnalysisTests.dir/CFGDominatorTree.cpp.o
445.848 [856/174/5480] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVOptWInstrs.cpp.o
445.965 [856/173/5481] Building CXX object lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86CodeGenPassBuilder.cpp.o
446.071 [856/172/5482] Building CXX object lib/Target/X86/AsmParser/CMakeFiles/LLVMX86AsmParser.dir/X86AsmParser.cpp.o
446.094 [855/172/5483] Linking CXX static library lib/libLLVMX86AsmParser.a
446.334 [855/171/5484] Building CXX object tools/clang/unittests/AST/CMakeFiles/ASTTests.dir/AttrTest.cpp.o
446.343 [855/170/5485] Building CXX object lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o
FAILED: lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o 
ccache /home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/install/stage1/bin/clang++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/build/stage2/lib/Target/X86 -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Target/X86 -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/build/stage2/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17 -fvisibility=hidden  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o -MF lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o.d -o lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86ISelLowering.cpp.o -c /home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Target/X86/X86ISelLowering.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Target/X86/X86ISelLowering.cpp:58962:14: error: comparison of integers of different signs: 'uint64_t' (aka 'unsigned long') and 'int' [-Werror,-Wsign-compare]
 58962 |   if (IdxVal == (VecNumElts / 2) &&
       |       ~~~~~~ ^   ~~~~~~~~~~~~~~
1 error generated.
446.375 [855/169/5486] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVInsertVSETVLI.cpp.o
446.377 [855/168/5487] Building CXX object tools/clang/unittests/Tooling/Syntax/CMakeFiles/SyntaxTests.dir/TokensTest.cpp.o
446.424 [855/167/5488] Building CXX object tools/clang/unittests/AST/ByteCode/CMakeFiles/InterpTests.dir/toAPValue.cpp.o
446.445 [855/166/5489] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64FrameLowering.cpp.o
446.455 [855/165/5490] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/ChromiumCheckModelTest.cpp.o
446.590 [855/164/5491] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/TestingSupport.cpp.o
446.626 [855/163/5492] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/GISel/AArch64LegalizerInfo.cpp.o
446.629 [855/162/5493] Building CXX object tools/clang/unittests/AST/ByteCode/CMakeFiles/InterpTests.dir/Descriptor.cpp.o
446.799 [855/161/5494] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64FastISel.cpp.o
446.813 [855/160/5495] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/DebugSupportTest.cpp.o
446.829 [855/159/5496] Building CXX object tools/clang/lib/Sema/CMakeFiles/obj.clangSema.dir/SemaType.cpp.o
446.940 [855/158/5497] Building CXX object tools/clang/unittests/ASTMatchers/CMakeFiles/ASTMatchersTests.dir/ASTMatchersInternalTest.cpp.o
446.959 [855/157/5498] Building CXX object tools/clang/unittests/AST/CMakeFiles/ASTTests.dir/NamedDeclPrinterTest.cpp.o
447.024 [855/156/5499] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/SymbolReaperTest.cpp.o
447.073 [855/155/5500] Building AMDGPUGenRegisterBank.inc...
447.132 [855/154/5501] Building CXX object tools/clang/unittests/AST/CMakeFiles/ASTTests.dir/ConceptPrinterTest.cpp.o
447.265 [855/153/5502] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/Rename/USRFinder.cpp.o
447.290 [855/152/5503] Building CXX object tools/clang/lib/InstallAPI/CMakeFiles/obj.clangInstallAPI.dir/Visitor.cpp.o
447.295 [855/151/5504] Building CXX object tools/clang/unittests/ASTMatchers/Dynamic/CMakeFiles/DynamicASTMatchersTests.dir/RegistryTest.cpp.o
447.317 [855/150/5505] Building CXX object tools/clang/unittests/AST/CMakeFiles/ASTTests.dir/ASTImporterFixtures.cpp.o
447.335 [855/149/5506] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/FalsePositiveRefutationBRVisitorTest.cpp.o
447.359 [855/148/5507] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/BenchmarkRunnerTest.cpp.o
447.436 [855/147/5508] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVInsertReadWriteCSR.cpp.o
447.486 [855/146/5509] Building CXX object lib/Target/ARM/AsmParser/CMakeFiles/LLVMARMAsmParser.dir/ARMAsmParser.cpp.o
447.563 [855/145/5510] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVGatherScatterLowering.cpp.o
447.607 [855/144/5511] Building CXX object lib/Target/AArch64/MCTargetDesc/CMakeFiles/LLVMAArch64Desc.dir/AArch64MCTargetDesc.cpp.o
447.675 [855/143/5512] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVFrameLowering.cpp.o
447.702 [855/142/5513] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVLandingPadSetup.cpp.o
447.712 [855/141/5514] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/PowerPC/TargetTest.cpp.o
447.892 [855/140/5515] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVMakeCompressible.cpp.o
447.923 [855/139/5516] Building CXX object tools/clang/unittests/AST/CMakeFiles/ASTTests.dir/ASTDumperTest.cpp.o
447.971 [855/138/5517] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/Mips/RegisterAliasingTest.cpp.o
448.024 [855/137/5518] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/TransferBranchTest.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/133083