[llvm] [LV] Support generating masks for switch terminators. (PR #99808)

Sun Aug 11 12:32:13 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `bolt-x86_64-ubuntu-clang` running on `bolt-worker` while building `llvm` at step 6 "test-build-clang-bolt-stage2-clang-bolt".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/113/builds/2099

Here is the relevant piece of the build log for the reference:
```
Step 6 (test-build-clang-bolt-stage2-clang-bolt) failure: test (failure)
...
726.610 [9/6/2999] Linking CXX static library lib/libclangStaticAnalyzerCore.a
726.783 [8/6/3000] Linking CXX static library lib/libclangStaticAnalyzerCheckers.a
727.676 [8/5/3001] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/cc1as_main.cpp.o
728.716 [8/4/3002] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/driver.cpp.o
729.181 [8/3/3003] Building CXX object tools/clang/lib/StaticAnalyzer/Frontend/CMakeFiles/obj.clangStaticAnalyzerFrontend.dir/AnalysisConsumer.cpp.o
729.204 [7/3/3004] Linking CXX static library lib/libclangStaticAnalyzerFrontend.a
729.215 [6/3/3005] Linking CXX static library lib/libclangFrontendTool.a
732.028 [6/2/3006] Building CXX object tools/clang/tools/driver/CMakeFiles/clang.dir/cc1_main.cpp.o
771.446 [5/2/3007] Linking CXX executable bin/llvm-bolt
821.543 [5/1/3008] Linking CXX executable bin/clang-20
FAILED: bin/clang-20 
: && /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/./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 -fprofile-instr-use="/home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/tools/clang/utils/perf-training/clang.profdata" -flto=thin -fno-common -Woverloaded-virtual -Wno-nested-anon-types -O3 -DNDEBUG -Wl,--emit-relocs,-znow -fuse-ld=lld -Wl,--color-diagnostics -fprofile-instr-use="/home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/tools/clang/utils/perf-training/clang.profdata" -flto=thin -Wl,--thinlto-cache-dir=/home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/tools/clang/stage2-bins/lto.cache   -Wl,--export-dynamic tools/clang/tools/driver/CMakeFiles/clang.dir/driver.cpp.o tools/clang/tools/driver/CMakeFiles/clang.dir/cc1_main.cpp.o tools/clang/tools/driver/CMakeFiles/clang.dir/cc1as_main.cpp.o tools/clang/tools/driver/CMakeFiles/clang.dir/cc1gen_reproducer_main.cpp.o tools/clang/tools/driver/CMakeFiles/clang.dir/clang-driver.cpp.o -o bin/clang-20  -Wl,-rpath,"\$ORIGIN/../lib:"  lib/libLLVMX86CodeGen.a  lib/libLLVMX86AsmParser.a  lib/libLLVMX86Desc.a  lib/libLLVMX86Disassembler.a  lib/libLLVMX86Info.a  lib/libLLVMAnalysis.a  lib/libLLVMCodeGen.a  lib/libLLVMCore.a  lib/libLLVMipo.a  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a  lib/libLLVMInstrumentation.a  lib/libLLVMMC.a  lib/libLLVMMCParser.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMOption.a  lib/libLLVMScalarOpts.a  lib/libLLVMSupport.a  lib/libLLVMTargetParser.a  lib/libLLVMTransformUtils.a  lib/libLLVMVectorize.a  lib/libclangBasic.a  lib/libclangCodeGen.a  lib/libclangDriver.a  lib/libclangFrontend.a  lib/libclangFrontendTool.a  lib/libclangSerialization.a  lib/libLLVMAsmPrinter.a  lib/libLLVMGlobalISel.a  lib/libLLVMSelectionDAG.a  lib/libLLVMMCDisassembler.a  lib/libclangCodeGen.a  lib/libLLVMCoverage.a  lib/libLLVMFrontendDriver.a  lib/libLLVMLTO.a  lib/libLLVMExtensions.a  lib/libLLVMPasses.a  lib/libLLVMCodeGen.a  lib/libLLVMCodeGenTypes.a  lib/libLLVMObjCARCOpts.a  lib/libLLVMCFGuard.a  lib/libLLVMIRPrinter.a  lib/libLLVMTarget.a  lib/libLLVMCoroutines.a  lib/libLLVMipo.a  lib/libLLVMInstrumentation.a  lib/libLLVMVectorize.a  lib/libLLVMBitWriter.a  lib/libLLVMLinker.a  lib/libLLVMHipStdPar.a  lib/libclangExtractAPI.a  lib/libclangInstallAPI.a  lib/libLLVMTextAPIBinaryReader.a  lib/libclangRewriteFrontend.a  lib/libclangARCMigrate.a  lib/libclangStaticAnalyzerFrontend.a  lib/libclangStaticAnalyzerCheckers.a  lib/libclangStaticAnalyzerCore.a  lib/libclangCrossTU.a  lib/libclangIndex.a  lib/libclangFrontend.a  lib/libclangDriver.a  lib/libLLVMWindowsDriver.a  lib/libLLVMOption.a  lib/libclangParse.a  lib/libclangSerialization.a  lib/libclangSema.a  lib/libclangAnalysis.a  lib/libclangASTMatchers.a  lib/libLLVMFrontendHLSL.a  lib/libclangAPINotes.a  lib/libclangEdit.a  lib/libclangSupport.a  lib/libclangAST.a  lib/libclangFormat.a  lib/libclangToolingInclusions.a  lib/libclangToolingCore.a  lib/libclangRewrite.a  lib/libclangLex.a  lib/libclangBasic.a  lib/libLLVMFrontendOpenMP.a  lib/libLLVMScalarOpts.a  lib/libLLVMAggressiveInstCombine.a  lib/libLLVMInstCombine.a  lib/libLLVMFrontendOffloading.a  lib/libLLVMTransformUtils.a  lib/libLLVMAnalysis.a  lib/libLLVMProfileData.a  lib/libLLVMSymbolize.a  lib/libLLVMDebugInfoDWARF.a  lib/libLLVMDebugInfoPDB.a  lib/libLLVMDebugInfoMSF.a  lib/libLLVMDebugInfoBTF.a  lib/libLLVMObject.a  lib/libLLVMMCParser.a  lib/libLLVMMC.a  lib/libLLVMDebugInfoCodeView.a  lib/libLLVMIRReader.a  lib/libLLVMBitReader.a  lib/libLLVMAsmParser.a  lib/libLLVMTextAPI.a  lib/libLLVMCore.a  lib/libLLVMRemarks.a  lib/libLLVMBitstreamReader.a  lib/libLLVMBinaryFormat.a  lib/libLLVMTargetParser.a  lib/libLLVMSupport.a  lib/libLLVMDemangle.a  -lrt  -ldl  -lm  /usr/lib/x86_64-linux-gnu/libz.so && :
instruction should have been considered by earlier checks
UNREACHABLE executed at /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:3361!
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Running pass "function<eager-inv>(float2int,lower-constant-intrinsics,chr,loop(loop-rotate<header-duplication;no-prepare-for-lto>,loop-deletion),loop-distribute,inject-tli-mappings,loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>,infer-alignment,loop-load-elim,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,simplifycfg<bonus-inst-threshold=1;forward-switch-cond;switch-range-to-icmp;switch-to-lookup;no-keep-loops;hoist-common-insts;sink-common-insts;speculate-blocks;simplify-cond-branch;no-speculate-unpredictables>,slp-vectorizer,vector-combine,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-unroll<O3>,transform-warning,sroa<preserve-cfg>,infer-alignment,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,loop-mssa(licm<allowspeculation>),alignment-from-assumptions,loop-sink,instsimplify,div-rem-pairs,tailcallelim,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch;speculate-unpredictables>)" on module "lib/libLLVMCoroutines.a(CoroFrame.cpp.o at 402394)"
1.	Running pass "loop-vectorize<no-interleave-forced-only;no-vectorize-forced-only;>" on function "_ZL13solveTypeNamePN4llvm4TypeE"
LLVM ERROR: Failed to rename temporary file /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/tools/clang/stage2-bins/lto.cache/Thin-34f422.tmp.o to /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/tools/clang/stage2-bins/lto.cache/llvmcache-568F5DB9F016D4F2157F15CC13205EE586C27228: No such file or directory

clang++: error: unable to execute command: Aborted (core dumped)
clang++: error: linker command failed due to signal (use -v to see invocation)
ninja: build stopped: subcommand failed.
FAILED: tools/clang/stage2-stamps/stage2-clang-bolt /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/tools/clang/stage2-stamps/stage2-clang-bolt 
cd /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/tools/clang && /usr/bin/cmake --build /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/tools/clang/stage2-bins/ --target clang-bolt
ninja: build stopped: subcommand failed.
FAILED: tools/clang/stage2-instrumented-stamps/stage2-instrumented-stage2-clang-bolt /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-stamps/stage2-instrumented-stage2-clang-bolt 
cd /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang && /usr/bin/cmake --build /home/worker/bolt-worker2/bolt-x86_64-ubuntu-clang/build/tools/clang/stage2-instrumented-bins/ --target stage2-clang-bolt
ninja: build stopped: subcommand failed.

```

https://github.com/llvm/llvm-project/pull/99808