[clang] [llvm] [AArch64] Improve bcvtn2 and remove aarch64_neon_bfcvt intrinsics (PR #120363)

Tue Jan 21 01:23:34 PST 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-win-fast` running on `as-builder-3` while building `clang,llvm` at step 6 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/2/builds/15273

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (build-unified-tree) failure: build (failure)
...
[1801/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\NaCl.cpp.obj
[1802/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\MinGW.cpp.obj
[1803/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\MipsLinux.cpp.obj
[1804/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\SPIRV.cpp.obj
[1805/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\RISCVToolchain.cpp.obj
[1806/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\Solaris.cpp.obj
[1807/4131] Building StripOpts.inc...
[1808/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\OpenBSD.cpp.obj
[1809/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\TCE.cpp.obj
[1810/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\CGBuiltin.cpp.obj
FAILED: tools/clang/lib/CodeGen/CMakeFiles/obj.clangCodeGen.dir/CGBuiltin.cpp.obj 
C:\ninja\ccache.exe C:\PROGRA~1\MICROS~2\2022\COMMUN~1\VC\Tools\MSVC\1438~1.331\bin\Hostx64\x64\cl.exe  /nologo /TP -DCLANG_BUILD_STATIC -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_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 -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\build\tools\clang\lib\CodeGen -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\lib\CodeGen -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\include -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\build\tools\clang\include -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\build\include -IC:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\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 -wd4251 -wd4275 -w14062 -we4238 /Gw /O2 /Ob2 /DNDEBUG -MD  /EHs-c- /GR- -std:c++17 /showIncludes /Fotools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\CGBuiltin.cpp.obj /Fdtools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\ /FS -c C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\lib\CodeGen\CGBuiltin.cpp
C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\lib\CodeGen\CGBuiltin.cpp(12824): error C2039: 'iota': is not a member of 'std'
C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.38.33130\include\forward_list(23): note: see declaration of 'std'
C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\lib\CodeGen\CGBuiltin.cpp(12824): error C3861: 'iota': identifier not found
C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\lib\CodeGen\CGBuiltin.cpp(12834): error C2039: 'iota': is not a member of 'std'
C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.38.33130\include\forward_list(23): note: see declaration of 'std'
C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\lib\CodeGen\CGBuiltin.cpp(12834): error C3861: 'iota': identifier not found
C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\lib\CodeGen\CGBuiltin.cpp(12836): error C2039: 'iota': is not a member of 'std'
C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.38.33130\include\forward_list(23): note: see declaration of 'std'
C:\buildbot\as-builder-3\llvm-clang-x86_64-win-fast\llvm-project\clang\lib\CodeGen\CGBuiltin.cpp(12836): error C3861: 'iota': identifier not found
[1811/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\PS4CPU.cpp.obj
[1812/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\UEFI.cpp.obj
[1813/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\SYCL.cpp.obj
[1814/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\OHOS.cpp.obj
[1815/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\SPIRVOpenMP.cpp.obj
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[1817/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\PPCLinux.cpp.obj
[1818/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\PPCFreeBSD.cpp.obj
[1819/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\XCore.cpp.obj
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[1823/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\XRayArgs.cpp.obj
[1824/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\ZOS.cpp.obj
[1825/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\Types.cpp.obj
[1826/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\CGExprScalar.cpp.obj
[1827/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\Targets\AArch64.cpp.obj
[1828/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\SwiftCallingConv.cpp.obj
[1829/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\CGCall.cpp.obj
[1830/4131] Building RISCVTargetParserDef.inc...
[1831/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\ObjectFilePCHContainerWriter.cpp.obj
[1832/4131] Building CXX object tools\clang\lib\AST\CMakeFiles\obj.clangAST.dir\ASTContext.cpp.obj
[1833/4131] Building CXX object tools\clang\lib\Driver\CMakeFiles\obj.clangDriver.dir\ToolChains\HIPUtility.cpp.obj
[1834/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\Targets\ARM.cpp.obj
[1835/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\CGDebugInfo.cpp.obj
[1836/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\BackendUtil.cpp.obj
[1837/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\CGStmtOpenMP.cpp.obj
[1838/4131] Building CXX object tools\clang\lib\CodeGen\CMakeFiles\obj.clangCodeGen.dir\CGOpenMPRuntime.cpp.obj

```

</details>

https://github.com/llvm/llvm-project/pull/120363