[llvm] [LLVM][rtsan] Add RealtimeSanitizer transform pass (PR #101232)

Thu Aug 8 16:55:48 PDT 2024

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/1900

Here is the relevant piece of the build log for the reference:
```
Step 12 (build-stage2-unified-tree) failure: build (failure)
...
21.187 [1/8/15] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangOptionDocEmitter.cpp.o
21.391 [1/7/16] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/RISCVVEmitter.cpp.o
37.798 [1/6/17] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangOpenCLBuiltinEmitter.cpp.o
45.208 [1/5/18] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/SveEmitter.cpp.o
46.778 [1/4/19] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangDiagnosticsEmitter.cpp.o
63.089 [1/3/20] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/MveEmitter.cpp.o
77.888 [1/2/21] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/NeonEmitter.cpp.o
136.388 [1/1/22] Building CXX object tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangAttrEmitter.cpp.o
136.768 [0/1/23] Linking CXX executable bin/clang-tblgen
179.750 [4445/1154/605] Building CXX object lib/Transforms/Instrumentation/CMakeFiles/LLVMInstrumentation.dir/RealtimeSanitizer.cpp.o
FAILED: lib/Transforms/Instrumentation/CMakeFiles/LLVMInstrumentation.dir/RealtimeSanitizer.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/Transforms/Instrumentation -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Transforms/Instrumentation -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  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -MD -MT lib/Transforms/Instrumentation/CMakeFiles/LLVMInstrumentation.dir/RealtimeSanitizer.cpp.o -MF lib/Transforms/Instrumentation/CMakeFiles/LLVMInstrumentation.dir/RealtimeSanitizer.cpp.o.d -o lib/Transforms/Instrumentation/CMakeFiles/LLVMInstrumentation.dir/RealtimeSanitizer.cpp.o -c /home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Transforms/Instrumentation/RealtimeSanitizer.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Transforms/Instrumentation/RealtimeSanitizer.cpp:44:17: error: variable 'RI' set but not used [-Werror,-Wunused-but-set-variable]
   44 |       if (auto *RI = dyn_cast<ReturnInst>(&I))
      |                 ^
In file included from /home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/lib/Transforms/Instrumentation/RealtimeSanitizer.cpp:20:
/home/buildbots/llvm-external-buildbots/workers/ppc64le-lld-multistage-test/ppc64le-lld-multistage-test/llvm-project/llvm/include/llvm/Transforms/Instrumentation/RealtimeSanitizer.h:36:28: error: private field 'Options' is not used [-Werror,-Wunused-private-field]
   36 |   RealtimeSanitizerOptions Options{};
      |                            ^
2 errors generated.
276.301 [4445/19/1740] Building CXX object lib/CodeGen/SelectionDAG/CMakeFiles/LLVMSelectionDAG.dir/SelectionDAGBuilder.cpp.o
277.288 [4445/17/1742] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveDebugValues/InstrRefBasedImpl.cpp.o
279.290 [4445/16/1743] Building CXX object lib/ObjCopy/CMakeFiles/LLVMObjCopy.dir/ELF/ELFObject.cpp.o
280.076 [4445/15/1744] Building CXX object lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPIRBuilder.cpp.o
280.125 [4445/14/1745] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/ELFObjectFile.cpp.o
280.437 [4445/13/1746] Building CXX object unittests/ADT/CMakeFiles/ADTTests.dir/APFloatTest.cpp.o
283.447 [4445/12/1747] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/ELF.cpp.o
283.497 [4445/11/1748] Building CXX object lib/CodeGen/SelectionDAG/CMakeFiles/LLVMSelectionDAG.dir/SelectionDAG.cpp.o
283.766 [4445/10/1749] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/MemProfContextDisambiguation.cpp.o
286.246 [4445/9/1750] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/CodeGenPrepare.cpp.o
288.250 [4445/8/1751] Building CXX object unittests/ADT/CMakeFiles/ADTTests.dir/DenseMapTest.cpp.o
288.297 [4445/7/1752] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/LoopVectorize.cpp.o
289.614 [4445/6/1753] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/ScalarEvolution.cpp.o
297.682 [4445/5/1754] Building CXX object lib/CodeGen/SelectionDAG/CMakeFiles/LLVMSelectionDAG.dir/DAGCombiner.cpp.o
312.715 [4445/4/1755] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/AttributorAttributes.cpp.o
360.344 [4445/3/1756] Building CXX object lib/Transforms/IPO/CMakeFiles/LLVMipo.dir/OpenMPOpt.cpp.o
414.439 [4445/2/1757] Building CXX object lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/SLPVectorizer.cpp.o
474.866 [4445/1/1758] Building CXX object unittests/ADT/CMakeFiles/ADTTests.dir/SmallVectorTest.cpp.o
ninja: build stopped: subcommand failed.

```

https://github.com/llvm/llvm-project/pull/101232