[libc-commits] [libc] [llvm] [APFloat] Add exp function for APFloat::IEEESsingle using expf implementation from LLVM libc. (PR #143959)

[LLVM Continuous Integration via libc-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `mlir-nvidia` running on `mlir-nvidia` while building `libc,llvm` at step 6 "build-check-mlir-build-only".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/138/builds/23162

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

```
Step 6 (build-check-mlir-build-only) failure: build (failure)
...
2.398 [5524/16/21] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/AutoConvert.cpp.o
2.440 [5523/16/22] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Debug.cpp.o
2.519 [5522/16/23] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ELFAttributes.cpp.o
2.830 [5521/16/24] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DebugCounter.cpp.o
3.218 [5520/16/25] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ARMWinEH.cpp.o
3.246 [5519/16/26] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/AllocToken.cpp.o
3.342 [5518/16/27] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/CodeGenCoverage.cpp.o
3.345 [5517/16/28] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DAGDeltaAlgorithm.cpp.o
3.482 [5516/16/29] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Allocator.cpp.o
3.609 [5515/16/30] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o
FAILED: lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes CCACHE_SLOPPINESS=pch_defines,time_macros /usr/bin/ccache /usr/bin/clang++ -DGTEST_HAS_RTTI=0 -DLLVM_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/vol/worker/mlir-nvidia/mlir-nvidia/llvm.obj/lib/Support -I/vol/worker/mlir-nvidia/mlir-nvidia/llvm.src/llvm/lib/Support -I/vol/worker/mlir-nvidia/mlir-nvidia/llvm.obj/include -I/vol/worker/mlir-nvidia/mlir-nvidia/llvm.src/llvm/include -I/vol/worker/mlir-nvidia/mlir-nvidia/llvm.src/llvm/../third-party/siphash/include -I/vol/worker/mlir-nvidia/mlir-nvidia/llvm.obj/include/../../libc -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 -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Werror=global-constructors -O3 -DNDEBUG -fPIC -UNDEBUG -Wno-c99-extensions -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -MD -MT lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o -MF lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o.d -o lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o -c /vol/worker/mlir-nvidia/mlir-nvidia/llvm.src/llvm/lib/Support/APFloat.cpp
/vol/worker/mlir-nvidia/mlir-nvidia/llvm.src/llvm/lib/Support/APFloat.cpp:32:10: fatal error: 'shared/math.h' file not found
#include "shared/math.h"
         ^~~~~~~~~~~~~~~
1 error generated.
3.989 [5515/15/31] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BuryPointer.cpp.o
4.084 [5515/14/32] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Base64.cpp.o
4.122 [5515/13/33] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamError.cpp.o
4.261 [5515/12/34] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/APFixedPoint.cpp.o
4.370 [5515/11/35] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ELFAttrParserCompact.cpp.o
4.434 [5515/10/36] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BlockFrequency.cpp.o
4.697 [5515/9/37] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ELFAttrParserExtended.cpp.o
4.774 [5515/8/38] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/AMDGPUMetadata.cpp.o
4.864 [5515/7/39] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamReader.cpp.o
4.869 [5515/6/40] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BranchProbability.cpp.o
4.949 [5515/5/41] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamRef.cpp.o
4.955 [5515/4/42] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamWriter.cpp.o
5.061 [5515/3/43] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ARMAttributeParser.cpp.o
6.620 [5515/2/44] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BalancedPartitioning.cpp.o
6.806 [5515/1/45] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/CommandLine.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/143959