[llvm] Reland "[NFC] Move DroppedVariableStats to its own file and redesign it to be extensible (#118546)" (PR #119048)

Sat Dec 7 00:26:20 PST 2024

llvm-ci wrote:

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

Full details are available at: https://lab.llvm.org/buildbot/#/builders/145/builds/3664

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

```
Step 5 (build-unified-tree) failure: build (failure)
...
69.900 [741/23/5562] Linking CXX shared library lib/libLLVMExegesisAArch64.so.20.0git
69.903 [740/23/5563] Linking CXX shared library lib/libLLVMExegesisPowerPC.so.20.0git
69.904 [739/23/5564] Linking CXX executable bin/lli
69.911 [739/22/5565] Creating library symlink lib/libLLVMExegesisX86.so
69.912 [739/21/5566] Creating library symlink lib/libLLVMExegesisAArch64.so
69.915 [739/20/5567] Creating library symlink lib/libLLVMExegesisPowerPC.so
69.918 [739/19/5568] Linking CXX shared library lib/libLLVMExegesisMips.so.20.0git
69.925 [738/19/5569] Creating library symlink lib/libLLVMExegesisMips.so
69.987 [737/19/5570] Linking CXX executable bin/llvm-exegesis
70.016 [737/18/5571] Linking CXX shared library lib/libclangCodeGen.so.20.0git
FAILED: lib/libclangCodeGen.so.20.0git 
: && /home/docker/llvm-external-buildbots/clang.17.0.6/bin/clang++ --gcc-toolchain=/gcc-toolchain/usr -fPIC -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 -fno-common -Woverloaded-virtual -Wno-nested-anon-types -O3 -DNDEBUG  -Wl,-z,defs -Wl,-z,nodelete -Wl,--color-diagnostics   -Wl,--gc-sections -shared -Wl,-soname,libclangCodeGen.so.20.0git -o lib/libclangCodeGen.so.20.0git tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/ABIInfo.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/ABIInfoImpl.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/BackendUtil.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGAtomic.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGBlocks.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGBuiltin.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGCUDANV.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGCUDARuntime.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGCXX.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGCXXABI.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGCall.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGClass.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGCleanup.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGCoroutine.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGDebugInfo.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGDecl.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGDeclCXX.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGException.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGExpr.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGExprAgg.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGExprCXX.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGExprComplex.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGExprConstant.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGExprScalar.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGGPUBuiltin.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGHLSLRuntime.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGLoopInfo.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGNonTrivialStruct.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGObjC.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGObjCGNU.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGObjCMac.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGObjCRuntime.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGOpenCLRuntime.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGOpenMPRuntime.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGOpenMPRuntimeGPU.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGPointerAuth.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGRecordLayoutBuilder.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGStmt.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGStmtOpenMP.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGVTT.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGVTables.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CodeGenABITypes.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CodeGenAction.cpp.o tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CodeGenFunction.cpp.o 

t  lib/libLLVMCodeGenTypes.so.20.0git  lib/libLLVMObjCARCOpts.so.20.0git  lib/libLLVMScalarOpts.so.20.0git  lib/libLLVMAggressiveInstCombine.so.20.0git  lib/libLLVMInstCombine.so.20.0git  lib/libLLVMTarget.so.20.0git  lib/libLLVMTransformUtils.so.20.0git  lib/libLLVMBitWriter.so.20.0git  lib/libLLVMAnalysis.so.20.0git  lib/libLLVMProfileData.so.20.0git  lib/libLLVMObject.so.20.0git  lib/libLLVMIRReader.so.20.0git  lib/libLLVMBitReader.so.20.0git  lib/libLLVMCore.so.20.0git  lib/libLLVMMC.so.20.0git  lib/libLLVMTargetParser.so.20.0git  lib/libLLVMSupport.so.20.0git  lib/libLLVMDemangle.so.20.0git  -Wl,-rpath-link,/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-rhel-test/clang-ppc64le-rhel/build/lib && :
ld.lld: error: undefined symbol: llvm::DroppedVariableStats::~DroppedVariableStats()
>>> referenced by BackendUtil.cpp
>>>               tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/BackendUtil.cpp.o:(llvm::StandardInstrumentations::~StandardInstrumentations())
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
75.141 [737/17/5572] Building AMDGPUGenPreLegalizeGICombiner.inc...
76.063 [737/16/5573] Building AMDGPUGenCallingConv.inc...
79.264 [737/15/5574] Building AMDGPUGenMCPseudoLowering.inc...
79.550 [737/14/5575] Building AMDGPUGenPostLegalizeGICombiner.inc...
79.721 [737/13/5576] Building AMDGPUGenSubtargetInfo.inc...
80.830 [737/12/5577] Building RISCVGenSubtargetInfo.inc...
81.038 [737/11/5578] Building AMDGPUGenSearchableTables.inc...
81.045 [737/10/5579] Building AMDGPUGenRegBankGICombiner.inc...
81.243 [737/9/5580] Building AMDGPUGenMCCodeEmitter.inc...
83.000 [737/8/5581] Building AMDGPUGenDisassemblerTables.inc...
88.945 [737/7/5582] Building AMDGPUGenAsmWriter.inc...
93.390 [737/6/5583] Building AMDGPUGenDAGISel.inc...
94.025 [737/5/5584] Building AMDGPUGenGlobalISel.inc...
94.549 [737/4/5585] Building AMDGPUGenInstrInfo.inc...
96.342 [737/3/5586] Building AMDGPUGenAsmMatcher.inc...
105.100 [737/2/5587] Building AMDGPUGenRegisterInfo.inc...
107.481 [737/1/5588] Building AMDGPUGenRegisterBank.inc...
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/119048