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

LLVM Continuous Integration via llvm-commits llvm-commits at lists.llvm.org
Wed Jun 26 21:30:50 PDT 2024 

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `fuchsia-x86_64-linux` running on `fuchsia-debian-64-us-central1-a-1` while building `llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/11/builds/691

Here is the relevant piece of the build log for the reference:
```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/fuchsia-linux.py ...' (failure)
...
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[720/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ComplexDeinterleavingPass.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[721/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveVariables.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[722/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineCFGPrinter.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[723/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/InterleavedAccessPass.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[724/4648] 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/clang++ -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-uacwo51v/lib/CodeGen -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-uacwo51v/include -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include -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 -Wno-comment -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -ffat-lto-objects -no-canonical-prefixes -O3 -DNDEBUG -std=c++17 -fvisibility=default  -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -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 /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen/MachineDomTreeUpdater.cpp
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen/MachineDomTreeUpdater.cpp:14:
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachineDomTreeUpdater.h:21:
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:53:3: error: constructor cannot be redeclared
   53 |   MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |   ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:51:12: note: previous definition is here
   51 |   explicit MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |            ^
1 error generated.
[725/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/IfConversion.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[726/4648] Building CXX object lib/IR/CMakeFiles/LLVMCore.dir/Metadata.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[727/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineFrameInfo.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[728/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineModuleInfoImpls.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[729/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/InterleavedLoadCombinePass.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[730/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MultiHazardRecognizer.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[731/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineDominanceFrontier.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[732/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /usr/bin/clang++ -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-uacwo51v/lib/CodeGen -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-uacwo51v/include -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include -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 -Wno-comment -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -ffat-lto-objects -no-canonical-prefixes -O3 -DNDEBUG -std=c++17 -fvisibility=default  -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen/MachineBlockPlacement.cpp
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen/MachineBlockPlacement.cpp:44:
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:53:3: error: constructor cannot be redeclared
   53 |   MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |   ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:51:12: note: previous definition is here
   51 |   explicit MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |            ^
1 error generated.
[733/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineCombiner.cpp.o
Step 6 (build) failure: build (failure)
...
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[720/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/ComplexDeinterleavingPass.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[721/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveVariables.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[722/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineCFGPrinter.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[723/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/InterleavedAccessPass.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[724/4648] 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/clang++ -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-uacwo51v/lib/CodeGen -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-uacwo51v/include -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include -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 -Wno-comment -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -ffat-lto-objects -no-canonical-prefixes -O3 -DNDEBUG -std=c++17 -fvisibility=default  -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -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 /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen/MachineDomTreeUpdater.cpp
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen/MachineDomTreeUpdater.cpp:14:
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachineDomTreeUpdater.h:21:
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:53:3: error: constructor cannot be redeclared
   53 |   MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |   ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:51:12: note: previous definition is here
   51 |   explicit MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |            ^
1 error generated.
[725/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/IfConversion.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[726/4648] Building CXX object lib/IR/CMakeFiles/LLVMCore.dir/Metadata.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[727/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineFrameInfo.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[728/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineModuleInfoImpls.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[729/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/InterleavedLoadCombinePass.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[730/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MultiHazardRecognizer.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[731/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineDominanceFrontier.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[732/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /usr/bin/clang++ -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-uacwo51v/lib/CodeGen -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen -I/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-uacwo51v/include -I/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include -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 -Wno-comment -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -ffat-lto-objects -no-canonical-prefixes -O3 -DNDEBUG -std=c++17 -fvisibility=default  -fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-rtti -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o -c /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen/MachineBlockPlacement.cpp
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
In file included from /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/lib/CodeGen/MachineBlockPlacement.cpp:44:
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:53:3: error: constructor cannot be redeclared
   53 |   MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |   ^
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/include/llvm/CodeGen/MachinePostDominators.h:51:12: note: previous definition is here
   51 |   explicit MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |            ^
1 error generated.
[733/4648] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineCombiner.cpp.o

```

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

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