[llvm] [VPlan] Simplify the computation of the block entry mask. (PR #173265)

[via llvm-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

* 60157 tests passed
* 1424 tests skipped

All executed tests passed, but another part of the build **failed**. Click on a failure below to see the details.

<details>
<summary>[code=4294967295] unittests/CodeGen/CodeGenTests.exe</summary>

```
FAILED: [code=4294967295] unittests/CodeGen/CodeGenTests.exe
cmd.exe /C "cd . && C:\BuildTools\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe -E vs_link_exe --intdir=unittests\CodeGen\CMakeFiles\CodeGenTests.dir --rc="C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\rc.exe" --mt="C:\Program Files (x86)\Windows Kits\10\bin\10.0.19041.0\x64\mt.exe" --manifests  -- C:\clang\clang-msvc\bin\lld-link.exe /nologo @CMakeFiles\CodeGenTests.rsp  /out:unittests\CodeGen\CodeGenTests.exe /implib:unittests\CodeGen\CodeGenTests.lib /pdb:unittests\CodeGen\CodeGenTests.pdb /version:0.0 /MANIFEST:NO /STACK:10000000 /INCREMENTAL:NO /subsystem:console  && cd ."
LINK: command "C:\clang\clang-msvc\bin\lld-link.exe /nologo @CMakeFiles\CodeGenTests.rsp /out:unittests\CodeGen\CodeGenTests.exe /implib:unittests\CodeGen\CodeGenTests.lib /pdb:unittests\CodeGen\CodeGenTests.pdb /version:0.0 /MANIFEST:NO /STACK:10000000 /INCREMENTAL:NO /subsystem:console" failed (exit code 1) with the following output:
lld-link: error: undefined symbol: public: class llvm::PreservedAnalyses __cdecl llvm::ObjCARCContractPass::run(class llvm::Function &, class llvm::AnalysisManager<class llvm::Function> &)
>>> referenced by LLVMAMDGPUCodeGen.lib(AMDGPUTargetMachine.cpp.obj):(public: virtual class llvm::PreservedAnalyses __cdecl llvm::detail::PassModel<class llvm::Function, struct llvm::ObjCARCContractPass, class llvm::AnalysisManager<class llvm::Function>>::run(class llvm::Function &, class llvm::AnalysisManager<class llvm::Function> &))
>>> referenced by LLVMPasses.lib(PassBuilder.cpp.obj)
>>> referenced by LLVMAMDGPUCodeGen.lib(R600TargetMachine.cpp.obj)

lld-link: error: undefined symbol: class llvm::Pass * __cdecl llvm::createObjCARCContractPass(void)
>>> referenced by LLVMCodeGen.lib(TargetPassConfig.cpp.obj):(public: virtual void __cdecl llvm::TargetPassConfig::addISelPrepare(void))

lld-link: error: undefined symbol: void __cdecl llvm::initializeObjCARCContractLegacyPassPass(class llvm::PassRegistry &)
>>> referenced by LLVMCodeGen.lib(CodeGen.cpp.obj):(void __cdecl llvm::initializeCodeGen(class llvm::PassRegistry &))

lld-link: error: undefined symbol: public: class llvm::PreservedAnalyses __cdecl llvm::ObjCARCOptPass::run(class llvm::Function &, class llvm::AnalysisManager<class llvm::Function> &)
>>> referenced by LLVMPasses.lib(PassBuilder.cpp.obj):(public: virtual class llvm::PreservedAnalyses __cdecl llvm::detail::PassModel<class llvm::Function, struct llvm::ObjCARCOptPass, class llvm::AnalysisManager<class llvm::Function>>::run(class llvm::Function &, class llvm::AnalysisManager<class llvm::Function> &))

lld-link: error: undefined symbol: public: class llvm::PreservedAnalyses __cdecl llvm::ObjCARCExpandPass::run(class llvm::Function &, class llvm::AnalysisManager<class llvm::Function> &)
>>> referenced by LLVMPasses.lib(PassBuilder.cpp.obj):(public: virtual class llvm::PreservedAnalyses __cdecl llvm::detail::PassModel<class llvm::Function, struct llvm::ObjCARCExpandPass, class llvm::AnalysisManager<class llvm::Function>>::run(class llvm::Function &, class llvm::AnalysisManager<class llvm::Function> &))

lld-link: error: undefined symbol: public: class llvm::PreservedAnalyses __cdecl llvm::PAEvalPass::run(class llvm::Function &, class llvm::AnalysisManager<class llvm::Function> &)
>>> referenced by LLVMPasses.lib(PassBuilder.cpp.obj):(public: virtual class llvm::PreservedAnalyses __cdecl llvm::detail::PassModel<class llvm::Function, struct llvm::PAEvalPass, class llvm::AnalysisManager<class llvm::Function>>::run(class llvm::Function &, class llvm::AnalysisManager<class llvm::Function> &))
```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/173265