[llvm] New AArch64CodeLayoutOpt pass for code layout optimizations. (PR #184434)

[via llvm-commits]

github-actions[bot] wrote:

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

* 3073 tests passed
* 29 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=1] lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64CodeLayoutOpt.cpp.obj</summary>

```
FAILED: [code=1] lib/Target/AArch64/CMakeFiles/LLVMAArch64CodeGen.dir/AArch64CodeLayoutOpt.cpp.obj
sccache C:\clang\clang-msvc\bin\clang-cl.exe  /nologo -TP -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_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_UNICODE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -IC:\_work\llvm-project\llvm-project\build\lib\Target\AArch64 -IC:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64 -IC:\_work\llvm-project\llvm-project\build\include -IC:\_work\llvm-project\llvm-project\llvm\include /DWIN32 /D_WINDOWS   /Zc:inline /Zc:__cplusplus /Oi /Brepro /bigobj /permissive- -Werror=unguarded-availability-new /W4  -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported /Gw /O2 /Ob2  -std:c++17 -MD -UNDEBUG /EHs-c- /GR- /showIncludes /Folib\Target\AArch64\CMakeFiles\LLVMAArch64CodeGen.dir\AArch64CodeLayoutOpt.cpp.obj /Fdlib\Target\AArch64\CMakeFiles\LLVMAArch64CodeGen.dir\LLVMAArch64CodeGen.pdb -c -- C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(55,1): error: a type specifier is required for all declarations
55 | STATISTIC(NumFunctionsAligned,
| ^
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(55,11): error: use of undeclared identifier 'NumFunctionsAligned'
55 | STATISTIC(NumFunctionsAligned,
|           ^~~~~~~~~~~~~~~~~~~
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(57,1): error: a type specifier is required for all declarations
57 | STATISTIC(NumFcmpFcselPairsDetected,
| ^
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(57,11): error: use of undeclared identifier 'NumFcmpFcselPairsDetected'
57 | STATISTIC(NumFcmpFcselPairsDetected,
|           ^~~~~~~~~~~~~~~~~~~~~~~~~
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(59,1): error: a type specifier is required for all declarations
59 | STATISTIC(NumCmpCselPairsDetected,
| ^
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(59,11): error: use of undeclared identifier 'NumCmpCselPairsDetected'
59 | STATISTIC(NumCmpCselPairsDetected,
|           ^~~~~~~~~~~~~~~~~~~~~~~
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(143,13): error: use of undeclared identifier 'NumFcmpFcselPairsDetected'
143 |           ++NumFcmpFcselPairsDetected;
|             ^~~~~~~~~~~~~~~~~~~~~~~~~
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(183,13): error: use of undeclared identifier 'NumCmpCselPairsDetected'
183 |           ++NumCmpCselPairsDetected;
|             ^~~~~~~~~~~~~~~~~~~~~~~
C:\_work\llvm-project\llvm-project\llvm\lib\Target\AArch64\AArch64CodeLayoutOpt.cpp(217,7): error: use of undeclared identifier 'NumFunctionsAligned'
217 |     ++NumFunctionsAligned;
|       ^~~~~~~~~~~~~~~~~~~
9 errors generated.
```
</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/184434