[llvm] [AArch64] Add support for B and H loads/stores in LoadStoreOptimizer (PR #180535)

Mon Feb 9 10:54:29 PST 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-rhel` running on `ppc64le-clang-rhel-test` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/145/builds/12703

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
-- Doxygen disabled.
-- Compiler-RT supported architectures: powerpc64le
-- Builtin supported architectures: powerpc64le
-- Generated Sanitizer SUPPORTED_TOOLS list on "Linux" is "asan;lsan;msan;tsan;ubsan"
-- sanitizer_common tests on "Linux" will run against "asan;lsan;msan;tsan;ubsan"
-- check-shadowcallstack does nothing.
-- Configuring done (6.8s)
-- Generating done (3.1s)
-- Build files have been written to: /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/runtimes/runtimes-bins
1037.085 [79/165/5088] Linking CXX executable bin/llc
FAILED: [code=1] bin/llc 
: && /home/buildbots/llvm-external-buildbots/clang.20.1.8/bin/clang++ --gcc-toolchain=/gcc-toolchain/usr -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 -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -Wl,--color-diagnostics -Wl,--export-dynamic   -Xlinker --dependency-file=tools/llc/CMakeFiles/llc.dir/link.d tools/llc/CMakeFiles/llc.dir/llc.cpp.o tools/llc/CMakeFiles/llc.dir/NewPMDriver.cpp.o -o bin/llc  -Wl,-rpath,"\$ORIGIN/../lib:/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/lib:"  lib/libLLVMAArch64AsmParser.so.23.0git  lib/libLLVMAMDGPUAsmParser.so.23.0git  lib/libLLVMARMAsmParser.so.23.0git  lib/libLLVMAVRAsmParser.so.23.0git  lib/libLLVMBPFAsmParser.so.23.0git  lib/libLLVMLoongArchAsmParser.so.23.0git  lib/libLLVMMipsAsmParser.so.23.0git  lib/libLLVMMSP430AsmParser.so.23.0git  lib/libLLVMPowerPCAsmParser.so.23.0git  lib/libLLVMRISCVAsmParser.so.23.0git  lib/libLLVMSparcAsmParser.so.23.0git  lib/libLLVMSystemZAsmParser.so.23.0git  lib/libLLVMVEAsmParser.so.23.0git  lib/libLLVMWebAssemblyAsmParser.so.23.0git  lib/libLLVMX86AsmParser.so.23.0git  lib/libLLVMAArch64CodeGen.so.23.0git  lib/libLLVMAMDGPUCodeGen.so.23.0git  lib/libLLVMARMCodeGen.so.23.0git  lib/libLLVMAVRCodeGen.so.23.0git  lib/libLLVMBPFCodeGen.so.23.0git  lib/libLLVMHexagonCodeGen.so.23.0git  lib/libLLVMLanaiCodeGen.so.23.0git  lib/libLLVMLoongArchCodeGen.so.23.0git  lib/libLLVMMipsCodeGen.so.23.0git  lib/libLLVMMSP430CodeGen.so.23.0git  lib/libLLVMNVPTXCodeGen.so.23.0git  lib/libLLVMPowerPCCodeGen.so.23.0git  lib/libLLVMRISCVCodeGen.so.23.0git  lib/libLLVMSparcCodeGen.so.23.0git  lib/libLLVMSPIRVCodeGen.so.23.0git  lib/libLLVMSystemZCodeGen.so.23.0git  lib/libLLVMVECodeGen.so.23.0git  lib/libLLVMWebAssemblyCodeGen.so.23.0git  lib/libLLVMX86CodeGen.so.23.0git  lib/libLLVMXCoreCodeGen.so.23.0git  lib/libLLVMAArch64Desc.so.23.0git  lib/libLLVMAMDGPUDesc.so.23.0git  lib/libLLVMARMDesc.so.23.0git  lib/libLLVMAVRDesc.so.23.0git  lib/libLLVMBPFDesc.so.23.0git  lib/libLLVMLoongArchDesc.so.23.0git  lib/libLLVMMipsDesc.so.23.0git  lib/libLLVMMSP430Desc.so.23.0git  lib/libLLVMNVPTXDesc.so.23.0git  lib/libLLVMPowerPCDesc.so.23.0git  lib/libLLVMRISCVDesc.so.23.0git  lib/libLLVMSparcDesc.so.23.0git  lib/libLLVMSPIRVDesc.so.23.0git  lib/libLLVMSystemZDesc.so.23.0git  lib/libLLVMVEDesc.so.23.0git  lib/libLLVMX86Desc.so.23.0git  lib/libLLVMXCoreDesc.so.23.0git  lib/libLLVMAArch64Info.so.23.0git  lib/libLLVMAMDGPUInfo.so.23.0git  lib/libLLVMARMInfo.so.23.0git  lib/libLLVMAVRInfo.so.23.0git  lib/libLLVMBPFInfo.so.23.0git  lib/libLLVMLoongArchInfo.so.23.0git  lib/libLLVMMipsInfo.so.23.0git  lib/libLLVMMSP430Info.so.23.0git  lib/libLLVMNVPTXInfo.so.23.0git  lib/libLLVMPowerPCInfo.so.23.0git  lib/libLLVMRISCVInfo.so.23.0git  lib/libLLVMSparcInfo.so.23.0git  lib/libLLVMSPIRVInfo.so.23.0git  lib/libLLVMSystemZInfo.so.23.0git  lib/libLLVMVEInfo.so.23.0git  lib/libLLVMX86Info.so.23.0git  lib/libLLVMXCoreInfo.so.23.0git  lib/libLLVMAsmPrinter.so.23.0git  lib/libLLVMMIRParser.so.23.0git  lib/libLLVMPasses.so.23.0git  lib/libLLVMPlugins.so.23.0git  -lpthread  lib/libLLVMHexagonAsmParser.so.23.0git  lib/libLLVMHexagonDesc.so.23.0git  lib/libLLVMHexagonInfo.so.23.0git  lib/libLLVMLanaiAsmParser.so.23.0git  lib/libLLVMLanaiDesc.so.23.0git  lib/libLLVMLanaiInfo.so.23.0git  lib/libLLVMVectorize.so.23.0git  lib/libLLVMWebAssemblyDesc.so.23.0git  lib/libLLVMWebAssemblyInfo.so.23.0git  lib/libLLVMIRPrinter.so.23.0git  lib/libLLVMSelectionDAG.so.23.0git  lib/libLLVMCodeGen.so.23.0git  lib/libLLVMScalarOpts.so.2
LLVMTransformUtils.so.23.0git  lib/libLLVMAnalysis.so.23.0git  lib/libLLVMIRReader.so.23.0git  lib/libLLVMMC.so.23.0git  lib/libLLVMCore.so.23.0git  lib/libLLVMRemarks.so.23.0git  lib/libLLVMTargetParser.so.23.0git  lib/libLLVMSupport.so.23.0git  -Wl,-rpath-link,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/lib && :
ld.lld: error: undefined symbol: llvm::initializeIPO(llvm::PassRegistry&)
>>> referenced by llc.cpp
>>>               tools/llc/CMakeFiles/llc.dir/llc.cpp.o:(main)
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
1038.803 [79/158/5095] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/SystemIncludeExtractor.cpp.o
1039.070 [79/156/5097] Building CXX object tools/clang/lib/Interpreter/CMakeFiles/obj.clangInterpreter.dir/InterpreterValuePrinter.cpp.o
1039.485 [79/155/5098] Building CXX object tools/llvm-reduce/CMakeFiles/llvm-reduce.dir/deltas/ReduceInlineCallSites.cpp.o
1039.537 [79/154/5099] Building CXX object tools/llvm-reduce/CMakeFiles/llvm-reduce.dir/deltas/ReduceArguments.cpp.o
1039.771 [79/153/5100] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/ExpandMacro.cpp.o
1039.809 [79/152/5101] Building CXX object tools/llvm-reduce/CMakeFiles/llvm-reduce.dir/deltas/SimplifyInstructions.cpp.o
1039.838 [79/151/5102] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/ObjCLocalizeStringLiteral.cpp.o
1039.881 [79/150/5103] Building CXX object tools/dsymutil/CMakeFiles/dsymutil.dir/DwarfLinkerForBinary.cpp.o
1039.901 [79/149/5104] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/ExpandDeducedType.cpp.o
1040.238 [79/148/5105] Building CXX object tools/clang/tools/extra/clang-reorder-fields/tool/CMakeFiles/clang-reorder-fields.dir/ClangReorderFields.cpp.o
1040.372 [79/147/5106] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/DumpAST.cpp.o
1040.904 [79/146/5107] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/RawStringLiteral.cpp.o
1040.939 [79/145/5108] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/AnnotateHighlightings.cpp.o
1040.957 [79/144/5109] Building CXX object tools/clang/tools/clang-diff/CMakeFiles/clang-diff.dir/ClangDiff.cpp.o
1041.110 [79/143/5110] Building CXX object tools/llvm-dwarfutil/CMakeFiles/llvm-dwarfutil.dir/llvm-dwarfutil.cpp.o
1041.190 [79/142/5111] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/ScopifyEnum.cpp.o
1041.202 [79/141/5112] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/SwapBinaryOperands.cpp.o
1041.253 [79/140/5113] Building CXX object tools/clang/tools/extra/clang-doc/CMakeFiles/obj.clangDoc.dir/Representation.cpp.o
1041.452 [79/139/5114] Building CXX object tools/llvm-profgen/CMakeFiles/llvm-profgen.dir/llvm-profgen.cpp.o
1041.565 [79/138/5115] Building CXX object tools/clang/tools/clang-extdef-mapping/CMakeFiles/clang-extdef-mapping.dir/ClangExtDefMapGen.cpp.o
1041.697 [79/137/5116] Building CXX object tools/llvm-strings/CMakeFiles/llvm-strings.dir/llvm-strings.cpp.o
1041.787 [79/136/5117] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/SwapIfBranches.cpp.o
1041.805 [79/135/5118] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/PopulateSwitch.cpp.o
1041.964 [79/134/5119] Building CXX object tools/clang/tools/clang-check/CMakeFiles/clang-check.dir/ClangCheck.cpp.o
1041.997 [79/133/5120] Building CXX object tools/clang/tools/extra/clang-apply-replacements/tool/CMakeFiles/clang-apply-replacements.dir/ClangApplyReplacementsMain.cpp.o
1042.071 [79/132/5121] Building CXX object tools/llvm-reduce/CMakeFiles/llvm-reduce.dir/deltas/ReduceMetadata.cpp.o
1042.233 [79/131/5122] Building CXX object tools/clang/tools/clang-nvlink-wrapper/CMakeFiles/clang-nvlink-wrapper.dir/ClangNVLinkWrapper.cpp.o
1042.448 [79/130/5123] Building CXX object tools/clang/tools/extra/modularize/CMakeFiles/modularize.dir/ModularizeUtilities.cpp.o
1042.490 [79/129/5124] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/refactor/InsertionPoint.cpp.o
1042.534 [79/128/5125] Building CXX object tools/llvm-reduce/CMakeFiles/llvm-reduce.dir/deltas/ReduceSinkDefsToUses.cpp.o
1042.556 [79/127/5126] Building CXX object tools/llvm-readtapi/CMakeFiles/llvm-readtapi.dir/DiffEngine.cpp.o
1042.716 [79/126/5127] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/MemberwiseConstructor.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/180535