[llvm] [CodeGen] Use temp symbol for MBBs (PR #95031)

Thu Jun 20 04:22:13 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-sie-win` running on `sie-win-worker` while building `llvm` at step 6 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/46/builds/328

Here is the relevant piece of the build log for the reference:
```
Step 6 (build-unified-tree) failure: build (failure)
...
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2097/4656] Building CXX object lib\MCA\CMakeFiles\LLVMMCA.dir\HardwareUnits\ResourceManager.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2098/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\ObjCopy.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2099/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\COFF\COFFObject.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2100/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\COFF\COFFReader.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2101/4656] Building CXX object lib\MC\CMakeFiles\LLVMMC.dir\MCContext.cpp.obj
FAILED: lib/MC/CMakeFiles/LLVMMC.dir/MCContext.cpp.obj 
C:\bin\ccache.exe C:\PROGRA~2\MICROS~1\2019\BUILDT~1\VC\Tools\MSVC\1429~1.301\bin\HostX64\x64\cl.exe  /nologo /TP -DGTEST_HAS_RTTI=0 -DUNICODE -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_GLIBCXX_ASSERTIONS -D_HAS_EXCEPTIONS=0 -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib\MC -IZ:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\lib\MC -Iinclude -IZ:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include /DWIN32 /D_WINDOWS   /Zc:inline /Zc:preprocessor /Zc:__cplusplus /Oi /bigobj /permissive- /W4 -wd4141 -wd4146 -wd4244 -wd4267 -wd4291 -wd4351 -wd4456 -wd4457 -wd4458 -wd4459 -wd4503 -wd4624 -wd4722 -wd4100 -wd4127 -wd4512 -wd4505 -wd4610 -wd4510 -wd4702 -wd4245 -wd4706 -wd4310 -wd4701 -wd4703 -wd4389 -wd4611 -wd4805 -wd4204 -wd4577 -wd4091 -wd4592 -wd4319 -wd4709 -wd5105 -wd4324 -w14062 -we4238 /Gw /O2 /Ob2  -MD  /EHs-c- /GR- -UNDEBUG -std:c++17 /showIncludes /Folib\MC\CMakeFiles\LLVMMC.dir\MCContext.cpp.obj /Fdlib\MC\CMakeFiles\LLVMMC.dir\LLVMMC.pdb /FS -c Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\lib\MC\MCContext.cpp
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\lib\MC\MCContext.cpp(328): error C2678: binary '<<': no operator found which takes a left-hand operand of type 'llvm::StringRef' (or there is no acceptable conversion)
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/MC/MCSymbol.h(437): note: could be 'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,const llvm::MCSymbol &)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/MC/MCLabel.h(49): note: or       'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,const llvm::MCLabel &)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/MC/MCExpr.h(138): note: or       'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,const llvm::MCExpr &)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/MC/MCInst.h(246): note: or       'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,const llvm::MCInst &)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/MC/MCInst.h(241): note: or       'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,const llvm::MCOperand &)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/APInt.h(2128): note: or       'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,const llvm::APInt &)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/Support/VersionTuple.h(191): note: or       'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,const llvm::VersionTuple &)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/Support/raw_ostream.h(783): note: or       'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,std::nullopt_t)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/Twine.h(572): note: or       'llvm::raw_ostream &llvm::operator <<(llvm::raw_ostream &,const llvm::Twine &)'
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\lib\MC\MCContext.cpp(328): note: while trying to match the argument list '(llvm::StringRef, const llvm::Twine)'
[2102/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\ELF\ELFObject.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2103/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\ELF\ELFObjcopy.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2104/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\MachO\MachOObjcopy.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2105/4656] Building CXX object lib\CodeGen\CMakeFiles\LLVMCodeGen.dir\ModuloSchedule.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2106/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\MachO\MachOWriter.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2107/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\MachO\MachOReader.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2108/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\MachO\MachOObject.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2109/4656] Building CXX object lib\CodeGen\AsmPrinter\CMakeFiles\LLVMAsmPrinter.dir\WinCFGuard.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2110/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\COFF\COFFWriter.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2111/4656] Building CXX object lib\CodeGen\AsmPrinter\CMakeFiles\LLVMAsmPrinter.dir\OcamlGCPrinter.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2112/4656] Building CXX object lib\ObjCopy\CMakeFiles\LLVMObjCopy.dir\MachO\MachOLayoutBuilder.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2113/4656] Building CXX object lib\CodeGen\CMakeFiles\LLVMCodeGen.dir\MachineOutliner.cpp.obj
Z:\b\llvm-clang-x86_64-sie-win\llvm-project\llvm\include\llvm/ADT/DenseMapInfo.h(145): warning C4293: '>>': shift count negative or too big, undefined behavior
[2114/4656] Building CXX object lib\CodeGen\AsmPrinter\CMakeFiles\LLVMAsmPrinter.dir\WinException.cpp.obj

```

https://github.com/llvm/llvm-project/pull/95031