[llvm] [CodeGen] Introduce `MachineDomTreeUpdater` (PR #95369)

Wed Jun 26 21:29:32 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-runtime-cuda-clang` running on `as-builder-7` while building `llvm` at step 7 "build-clang-default".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/7/builds/596

Here is the relevant piece of the build log for the reference:
```
Step 7 (build-clang-default) failure: cmake (failure)
...
14.209 [2653/130/1970] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/AllocationOrder.cpp.o
14.269 [2652/130/1971] Building X86GenFastISel.inc...
14.528 [2651/130/1972] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/FuncletLayout.cpp.o
14.572 [2650/130/1973] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LivePhysRegs.cpp.o
14.820 [2649/130/1974] Building CXX object examples/Bye/CMakeFiles/Bye.dir/Bye.cpp.o
15.132 [2648/130/1975] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/DetectDeadLanes.cpp.o
15.144 [2647/130/1976] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveStacks.cpp.o
15.274 [2646/130/1977] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineSSAContext.cpp.o
15.360 [2645/130/1978] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/InitUndef.cpp.o
15.385 [2644/130/1979] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineDomTreeUpdater.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineDomTreeUpdater.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /usr/bin/c++ -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/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/build/clang/lib/CodeGen -I/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/lib/CodeGen -I/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/build/clang/include -I/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -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-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineDomTreeUpdater.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineDomTreeUpdater.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineDomTreeUpdater.cpp.o -c /home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/lib/CodeGen/MachineDomTreeUpdater.cpp
In file included from /home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/include/llvm/CodeGen/MachineDomTreeUpdater.h:21,
                 from /home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/lib/CodeGen/MachineDomTreeUpdater.cpp:14:
/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:53:3: error: ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’ cannot be overloaded with ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’
   53 |   MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |   ^~~~~~~~~~~~~~~~~~~~~~~~
/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:51:12: note: previous declaration ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’
   51 |   explicit MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |            ^~~~~~~~~~~~~~~~~~~~~~~~
15.475 [2644/129/1980] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ExpandPostRAPseudos.cpp.o
15.489 [2644/128/1981] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveIntervalCalc.cpp.o
15.650 [2644/127/1982] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/RegisterUsageInfo.cpp.o
15.707 [2644/126/1983] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineSizeOpts.cpp.o
15.717 [2644/125/1984] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineFrameInfo.cpp.o
15.731 [2644/124/1985] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/InterferenceCache.cpp.o
15.745 [2644/123/1986] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineOptimizationRemarkEmitter.cpp.o
15.796 [2644/122/1987] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LazyMachineBlockFrequencyInfo.cpp.o
15.844 [2644/121/1988] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveIntervalUnion.cpp.o
15.882 [2644/120/1989] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachinePostDominators.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachinePostDominators.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /usr/bin/c++ -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/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/build/clang/lib/CodeGen -I/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/lib/CodeGen -I/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/build/clang/include -I/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -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-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachinePostDominators.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachinePostDominators.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachinePostDominators.cpp.o -c /home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/lib/CodeGen/MachinePostDominators.cpp
In file included from /home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/lib/CodeGen/MachinePostDominators.cpp:14:
/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:53:3: error: ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’ cannot be overloaded with ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’
   53 |   MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |   ^~~~~~~~~~~~~~~~~~~~~~~~
/home/buildbot/worker/as-builder-7/ramdisk/flang-runtime-cuda-clang/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:51:12: note: previous declaration ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’
   51 |   explicit MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |            ^~~~~~~~~~~~~~~~~~~~~~~~
16.005 [2644/119/1990] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/FEntryInserter.cpp.o
16.137 [2644/118/1991] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/DeadMachineInstructionElim.cpp.o
16.170 [2644/117/1992] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/EHContGuardCatchret.cpp.o
16.298 [2644/116/1993] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LocalStackSlotAllocation.cpp.o
16.310 [2644/115/1994] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/FaultMaps.cpp.o
16.347 [2644/114/1995] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveRegMatrix.cpp.o
16.397 [2644/113/1996] Building X86GenDAGISel.inc...
16.460 [2644/112/1997] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/CFGuardLongjmp.cpp.o
16.545 [2644/111/1998] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineFunctionAnalysis.cpp.o
16.571 [2644/110/1999] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/BreakFalseDeps.cpp.o

```

https://github.com/llvm/llvm-project/pull/95369