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

Mon Dec 15 08:04:30 PST 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ppc64le-mlir-rhel-clang` running on `ppc64le-mlir-rhel-test` while building `libc,llvm` at step 5 "build-check-mlir-build-only".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/129/builds/35026

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

```
Step 5 (build-check-mlir-build-only) failure: build (failure)
...
61.619 [4219/89/208] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/UnicodeNameToCodepointGenerated.cpp.o
61.816 [4219/88/209] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/MSP430AttributeParser.cpp.o
61.837 [4219/87/210] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/FloatingPointMode.cpp.o
62.219 [4219/86/211] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/UnicodeCaseFold.cpp.o
62.991 [4219/85/212] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/HexagonAttributeParser.cpp.o
64.246 [4219/84/213] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ExponentialBackoff.cpp.o
64.699 [4219/83/214] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Regex.cpp.o
64.840 [4219/82/215] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/StringSaver.cpp.o
64.959 [4219/81/216] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/StringExtras.cpp.o
65.596 [4219/80/217] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o
FAILED: lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o 
ccache /home/buildbots/llvm-external-buildbots/clang.19.1.7/bin/clang++ -DGTEST_HAS_RTTI=0 -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/home/buildbots/llvm-external-buildbots/workers/ppc64le-mlir-rhel-test/ppc64le-mlir-rhel-clang-build/build/lib/Support -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-mlir-rhel-test/ppc64le-mlir-rhel-clang-build/llvm-project/llvm/lib/Support -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-mlir-rhel-test/ppc64le-mlir-rhel-clang-build/build/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-mlir-rhel-test/ppc64le-mlir-rhel-clang-build/llvm-project/llvm/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-mlir-rhel-test/ppc64le-mlir-rhel-clang-build/llvm-project/llvm/../third-party/siphash/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-mlir-rhel-test/ppc64le-mlir-rhel-clang-build/build/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 -std=c++17 -UNDEBUG -Wno-c99-extensions  -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 /home/buildbots/llvm-external-buildbots/workers/ppc64le-mlir-rhel-test/ppc64le-mlir-rhel-clang-build/llvm-project/llvm/lib/Support/APFloat.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-mlir-rhel-test/ppc64le-mlir-rhel-clang-build/llvm-project/llvm/lib/Support/APFloat.cpp:32:10: fatal error: 'shared/math.h' file not found
   32 | #include "shared/math.h"
      |          ^~~~~~~~~~~~~~~
1 error generated.
65.601 [4219/79/218] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamWriter.cpp.o
65.682 [4219/78/219] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SHA1.cpp.o
66.370 [4219/77/220] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/FormatVariadic.cpp.o
66.537 [4219/76/221] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SlowDynamicAPInt.cpp.o
67.577 [4219/75/222] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SipHash.cpp.o
67.694 [4219/74/223] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/CSKYAttributeParser.cpp.o
68.546 [4219/73/224] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/TextEncoding.cpp.o
69.314 [4219/72/225] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Threading.cpp.o
70.531 [4219/71/226] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/RWMutex.cpp.o
70.642 [4219/70/227] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamRef.cpp.o
70.853 [4219/69/228] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/VirtualOutputError.cpp.o
70.900 [4219/68/229] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/NativeFormatting.cpp.o
71.260 [4219/67/230] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Twine.cpp.o
71.457 [4219/66/231] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DataExtractor.cpp.o
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72.067 [4219/64/233] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Z3Solver.cpp.o
72.207 [4219/63/234] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ErrorHandling.cpp.o
73.063 [4219/62/235] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ScaledNumber.cpp.o
73.504 [4219/61/236] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ToolOutputFile.cpp.o
73.614 [4219/60/237] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/xxhash.cpp.o
73.793 [4219/59/238] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamReader.cpp.o
74.147 [4219/58/239] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/APFixedPoint.cpp.o
75.880 [4219/57/240] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/RISCVAttributeParser.cpp.o
76.155 [4219/56/241] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/VirtualOutputConfig.cpp.o
76.460 [4219/55/242] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DynamicLibrary.cpp.o
76.606 [4219/54/243] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/GraphWriter.cpp.o
76.672 [4219/53/244] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Debug.cpp.o
77.461 [4219/52/245] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/VirtualOutputBackend.cpp.o
77.741 [4219/51/246] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/MemoryBuffer.cpp.o
78.938 [4219/50/247] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DAGDeltaAlgorithm.cpp.o
79.207 [4219/49/248] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Error.cpp.o
80.376 [4219/48/249] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/FileOutputBuffer.cpp.o
80.400 [4219/47/250] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/TarWriter.cpp.o

```

</details>

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