[llvm] [RISCV] Initial codegen support for the XRivosVizip extension (PR #131933)

Sat Mar 29 16:12:14 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/10306

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

```
Step 12 (build-stage2-unified-tree) failure: build (failure)
...
344.786 [852/109/5554] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/MatchSwitchTest.cpp.o
344.795 [852/108/5555] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVPostLegalizerCombiner.cpp.o
344.813 [852/107/5556] Building CXX object lib/Target/PowerPC/CMakeFiles/LLVMPowerPCCodeGen.dir/PPCISelLowering.cpp.o
344.831 [851/107/5557] Linking CXX static library lib/libLLVMPowerPCCodeGen.a
345.019 [850/107/5558] Building CXX object tools/clang/lib/ASTMatchers/CMakeFiles/obj.clangASTMatchers.dir/ASTMatchFinder.cpp.o
345.023 [850/106/5559] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/ObjectFilePCHContainerWriter.cpp.o
345.077 [850/105/5560] Linking CXX executable unittests/Target/PowerPC/PowerPCTests
345.121 [850/104/5561] Building CXX object tools/clang/unittests/AST/ByteCode/CMakeFiles/InterpTests.dir/Descriptor.cpp.o
345.267 [850/103/5562] Building CXX object tools/clang/lib/AST/CMakeFiles/obj.clangAST.dir/ASTImporterLookupTable.cpp.o
345.514 [850/102/5563] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o
FAILED: lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.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/RISCV -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Target/RISCV -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/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o -MF lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o.d -o lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVISelLowering.cpp.o -c /home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Target/RISCV/RISCVISelLowering.cpp:4629:26: error: comparison of integers of different signs: 'unsigned int' and 'int' [-Werror,-Wsign-compare]
 4629 |   for (unsigned i = 0; i != NumElts; ++i) {
      |                        ~ ^  ~~~~~~~
1 error generated.
345.602 [850/101/5564] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGHLSLRuntime.cpp.o
345.605 [850/100/5565] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64FastISel.cpp.o
345.656 [850/99/5566] Building CXX object tools/clang/unittests/CodeGen/CMakeFiles/ClangCodeGenTests.dir/TBAAMetadataTest.cpp.o
345.689 [850/98/5567] Building CXX object lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/GISel/AArch64LegalizerInfo.cpp.o
345.697 [850/97/5568] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/FalsePositiveRefutationBRVisitorTest.cpp.o
345.806 [850/96/5569] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/LoggerTest.cpp.o
345.829 [850/95/5570] Building CXX object tools/clang/lib/AST/CMakeFiles/obj.clangAST.dir/ASTImporter.cpp.o
345.916 [850/94/5571] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVTargetMachine.cpp.o
345.996 [850/93/5572] Building CXX object tools/clang/lib/Frontend/CMakeFiles/obj.clangFrontend.dir/ASTConsumers.cpp.o
346.016 [850/92/5573] Building CXX object tools/clang/unittests/Serialization/CMakeFiles/SerializationTests.dir/NoCommentsTest.cpp.o
346.126 [850/91/5574] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/TargetBuiltins/ARM.cpp.o
346.149 [850/90/5575] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/ChromiumCheckModelTest.cpp.o
346.200 [850/89/5576] Building CXX object tools/clang/unittests/Sema/CMakeFiles/SemaTests.dir/SemaNoloadLookupTest.cpp.o
346.240 [850/88/5577] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/CachedConstAccessorsLatticeTest.cpp.o
346.537 [850/87/5578] Building CXX object tools/clang/lib/Serialization/CMakeFiles/obj.clangSerialization.dir/ASTReaderDecl.cpp.o
346.622 [850/86/5579] Building CXX object tools/clang/unittests/Analysis/CMakeFiles/ClangAnalysisTests.dir/IntervalPartitionTest.cpp.o
346.671 [850/85/5580] Building CXX object tools/clang/lib/AST/CMakeFiles/obj.clangAST.dir/ParentMapContext.cpp.o
346.879 [850/84/5581] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/WatchedLiteralsSolverTest.cpp.o
347.148 [850/83/5582] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/CallDescriptionTest.cpp.o
347.306 [850/82/5583] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/RISCVTargetTransformInfo.cpp.o
347.514 [850/81/5584] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/TestingSupport.cpp.o
347.671 [850/80/5585] Building CXX object tools/clang/unittests/ASTMatchers/Dynamic/CMakeFiles/DynamicASTMatchersTests.dir/RegistryTest.cpp.o
347.703 [850/79/5586] Building AMDGPUGenRegisterInfo.inc...
347.752 [850/78/5587] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SLPVectorizer.cpp.o
347.933 [850/77/5588] Building CXX object tools/clang/unittests/ASTMatchers/CMakeFiles/ASTMatchersTests.dir/ASTMatchersInternalTest.cpp.o
348.053 [850/76/5589] Building CXX object lib/Target/X86/CMakeFiles/LLVMX86CodeGen.dir/X86CodeGenPassBuilder.cpp.o
348.118 [850/75/5590] Building CXX object tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGStmtOpenMP.cpp.o
348.488 [850/74/5591] Building CXX object tools/clang/lib/AST/CMakeFiles/obj.clangAST.dir/TextNodeDumper.cpp.o
348.506 [850/73/5592] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/TestingSupportTest.cpp.o
348.656 [850/72/5593] Building CXX object lib/Target/RISCV/CMakeFiles/LLVMRISCVCodeGen.dir/GISel/RISCVPreLegalizerCombiner.cpp.o
348.928 [850/71/5594] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/SnippetFileTest.cpp.o
349.061 [850/70/5595] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/TargetTest.cpp.o
349.624 [850/69/5596] Building CXX object tools/clang/unittests/Format/CMakeFiles/FormatTests.dir/ConfigParseTest.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/131933