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https://github.com/GerbilSoft/zlib-ng.git
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5e3510e314
We have to disable the CRC32-VX implementation for some Clang versions (18 <= version < 19.1.2) that generate bad code for the IBM S390 VGFMA intrinsics.
28 lines
914 B
C
28 lines
914 B
C
/* s390_functions.h -- s390 implementations for arch-specific functions.
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#ifndef S390_FUNCTIONS_H_
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#define S390_FUNCTIONS_H_
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#ifdef S390_CRC32_VX
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uint32_t crc32_s390_vx(uint32_t crc, const uint8_t *buf, size_t len);
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#ifdef __clang__
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# if ((__clang_major__ == 18) || (__clang_major__ == 19 && (__clang_minor__ < 1 || (__clang_minor__ == 1 && __clang_patchlevel__ < 2))))
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# error CRC32-VX optimizations are broken due to compiler bug in Clang versions: 18.0.0 <= clang_version < 19.1.2. \
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Either disable the zlib-ng CRC32-VX optimization, or switch to another compiler/compiler version.
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# endif
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#endif
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#endif
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#ifdef DISABLE_RUNTIME_CPU_DETECTION
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# if defined(S390_CRC32_VX) && defined(__zarch__) && __ARCH__ >= 11 && defined(__VX__)
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# undef native_crc32
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# define native_crc32 = crc32_s390_vx
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# endif
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#endif
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#endif
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