[llvm] [RISCV] add computeKnownBitsForTargetNode for RISCVISD::SRLW (PR #155995)

Wed Sep 3 08:23:01 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-linux-multistage` running on `ppc64le-clang-multistage-test` while building `llvm` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/76/builds/12623

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

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
...
[77/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-calls-Noinst-Test
[78/85] Generating ASAN_NOINST_TEST_OBJECTS.gtest-all.cc.powerpc64le-inline.o
[79/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-inline-Noinst-Test
[80/85] Generating ASAN_INST_TEST_OBJECTS.gtest-all.cc.powerpc64le-calls.o
[81/85] Generating POWERPC64LELinuxDynamicConfig/Asan-powerpc64le-calls-Dynamic-Test
[82/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-calls-Test
[83/85] Generating ASAN_INST_TEST_OBJECTS.gtest-all.cc.powerpc64le-inline.o
[84/85] Generating POWERPC64LELinuxDynamicConfig/Asan-powerpc64le-inline-Dynamic-Test
[85/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-inline-Test
[1238/1246] Linking CXX executable unittests/Target/RISCV/RISCVTests
FAILED: unittests/Target/RISCV/RISCVTests 
: && /usr/lib64/ccache/c++ -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -Wl,--gc-sections unittests/Target/RISCV/CMakeFiles/RISCVTests.dir/MCInstrAnalysisTest.cpp.o unittests/Target/RISCV/CMakeFiles/RISCVTests.dir/RISCVInstrInfoTest.cpp.o unittests/Target/RISCV/CMakeFiles/RISCVTests.dir/RISCVSelectionDAGTest.cpp.o -o unittests/Target/RISCV/RISCVTests  -Wl,-rpath,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/lib  lib/libLLVMRISCVCodeGen.so.22.0git  lib/libLLVMRISCVDesc.so.22.0git  lib/libLLVMRISCVInfo.so.22.0git  lib/libLLVMPasses.so.22.0git  -lpthread  lib/libllvm_gtest_main.so.22.0git  lib/libllvm_gtest.so.22.0git  -lpthread  lib/libLLVMSelectionDAG.so.22.0git  lib/libLLVMCodeGen.so.22.0git  lib/libLLVMAnalysis.so.22.0git  lib/libLLVMMC.so.22.0git  lib/libLLVMCore.so.22.0git  lib/libLLVMTargetParser.so.22.0git  lib/libLLVMSupport.so.22.0git  -Wl,-rpath-link,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/lib && :
/usr/bin/ld: unittests/Target/RISCV/CMakeFiles/RISCVTests.dir/RISCVSelectionDAGTest.cpp.o: undefined reference to symbol '_ZN4llvm19parseAssemblyStringENS_9StringRefERNS_12SMDiagnosticERNS_11LLVMContextEPNS_11SlotMappingE'
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1/lib/libLLVMAsmParser.so.22.0git: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
[1240/1246] Linking CXX executable tools/clang/unittests/AllClangUnitTests
ninja: build stopped: subcommand failed.
Step 11 (ninja check 2) failure: stage 2 checked (failure)
...
[77/85] Generating ASAN_NOINST_TEST_OBJECTS.gtest-all.cc.powerpc64le-inline.o
[78/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-calls-Noinst-Test
[79/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-inline-Noinst-Test
[80/85] Generating ASAN_INST_TEST_OBJECTS.gtest-all.cc.powerpc64le-calls.o
[81/85] Generating POWERPC64LELinuxDynamicConfig/Asan-powerpc64le-calls-Dynamic-Test
[82/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-calls-Test
[83/85] Generating ASAN_INST_TEST_OBJECTS.gtest-all.cc.powerpc64le-inline.o
[84/85] Generating POWERPC64LELinuxDynamicConfig/Asan-powerpc64le-inline-Dynamic-Test
[85/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-inline-Test
[876/1246] Linking CXX executable unittests/Target/RISCV/RISCVTests
FAILED: unittests/Target/RISCV/RISCVTests 
: && /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1.install/bin/clang++ -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -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 -Wl,--gc-sections unittests/Target/RISCV/CMakeFiles/RISCVTests.dir/MCInstrAnalysisTest.cpp.o unittests/Target/RISCV/CMakeFiles/RISCVTests.dir/RISCVInstrInfoTest.cpp.o unittests/Target/RISCV/CMakeFiles/RISCVTests.dir/RISCVSelectionDAGTest.cpp.o -o unittests/Target/RISCV/RISCVTests  -Wl,-rpath,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage2/lib  lib/libLLVMRISCVCodeGen.so.22.0git  lib/libLLVMRISCVDesc.so.22.0git  lib/libLLVMRISCVInfo.so.22.0git  lib/libLLVMPasses.so.22.0git  -lpthread  lib/libllvm_gtest_main.so.22.0git  lib/libllvm_gtest.so.22.0git  -lpthread  lib/libLLVMSelectionDAG.so.22.0git  lib/libLLVMCodeGen.so.22.0git  lib/libLLVMAnalysis.so.22.0git  lib/libLLVMMC.so.22.0git  lib/libLLVMCore.so.22.0git  lib/libLLVMTargetParser.so.22.0git  lib/libLLVMSupport.so.22.0git  -Wl,-rpath-link,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage2/lib && :
/usr/bin/ld: unittests/Target/RISCV/CMakeFiles/RISCVTests.dir/RISCVSelectionDAGTest.cpp.o: undefined reference to symbol '_ZN4llvm19parseAssemblyStringENS_9StringRefERNS_12SMDiagnosticERNS_11LLVMContextEPNS_11SlotMappingE'
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage2/lib/libLLVMAsmParser.so.22.0git: error adding symbols: DSO missing from command line
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
[1141/1246] Building CXX object unittests/IR/CMakeFiles/IRTests.dir/PassBuilderCallbacksTest.cpp.o
[1143/1246] Building CXX object tools/clang/unittests/Format/CMakeFiles/FormatTests.dir/TokenAnnotatorTest.cpp.o
[1144/1246] Building CXX object tools/clang/tools/extra/include-cleaner/unittests/CMakeFiles/ClangIncludeCleanerTests.dir/LocateSymbolTest.cpp.o
[1145/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/tweaks/SwapBinaryOperandsTests.cpp.o
[1146/1246] Building CXX object unittests/Frontend/CMakeFiles/LLVMFrontendTests.dir/OpenMPDecompositionTest.cpp.o
[1147/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/ConfigCompileTests.cpp.o
[1148/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/ModulesTests.cpp.o
[1149/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/tweaks/ExpandDeducedTypeTests.cpp.o
[1150/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/tweaks/ShowSelectionTreeTests.cpp.o
[1151/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/ASTTests.cpp.o
[1152/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/InsertionPointTests.cpp.o
[1153/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/tweaks/TweakTesting.cpp.o
[1154/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/IncludeCleanerTests.cpp.o
[1155/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/tweaks/SwapIfBranchesTests.cpp.o
[1156/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/FileIndexTests.cpp.o
[1157/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/tweaks/MemberwiseConstructorTests.cpp.o
[1158/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/CollectMacrosTests.cpp.o
[1159/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/DexTests.cpp.o
[1160/1246] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/FlowSensitive/TransferTest.cpp.o
[1161/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/HoverTests.cpp.o
[1162/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/tweaks/DefineOutlineTests.cpp.o
[1163/1246] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Tooling/RecursiveASTVisitorTests/InitListExprPostOrder.cpp.o
[1164/1246] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/RangeSetTest.cpp.o
[1165/1246] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTImporterGenericRedeclTest.cpp.o
[1166/1246] Building CXX object unittests/SandboxIR/CMakeFiles/SandboxIRTests.dir/SandboxIRTest.cpp.o
[1167/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/ClangdLSPServerTests.cpp.o
[1168/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/StdLibTests.cpp.o
[1169/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/SourceCodeTests.cpp.o
[1170/1246] Building CXX object unittests/ADT/CMakeFiles/ADTTests.dir/APFloatTest.cpp.o
[1171/1246] Building CXX object tools/clang/tools/extra/clangd/unittests/CMakeFiles/ClangdTests.dir/SelectionTests.cpp.o
[1172/1246] Building CXX object unittests/Transforms/Scalar/CMakeFiles/ScalarTests.dir/LoopPassManagerTest.cpp.o
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[1175/1246] Building CXX object tools/clang/tools/extra/unittests/clang-tidy/CMakeFiles/ClangTidyTests.dir/OverlappingReplacementsTest.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/155995