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[libc] Update FMA detection macro for x86-64 targets.
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Authored by lntue on Jun 7 2023, 4:24 PM.

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Summary

To generate fma instructions for x86-64 targets, we need both -mavx2
and -mfma.

Herald added projects: Restricted Project, Restricted Project. · View Herald TranscriptJun 7 2023, 4:24 PM

lntue requested review of this revision.Jun 7 2023, 4:24 PM

This revision is now accepted and ready to land.Jun 7 2023, 4:29 PM

This revision was automatically updated to reflect the committed changes.

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libc/

src/

__support/

macros/

properties/

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	#if defined(__AVX512F__)			#if defined(__AVX512F__)
	#define LIBC_TARGET_CPU_HAS_AVX512F			#define LIBC_TARGET_CPU_HAS_AVX512F
	#endif			#endif

	#if defined(__AVX512BW__)			#if defined(__AVX512BW__)
	#define LIBC_TARGET_CPU_HAS_AVX512BW			#define LIBC_TARGET_CPU_HAS_AVX512BW
	#endif			#endif

	#if defined(__ARM_FEATURE_FMA) \|\| defined(__AVX2__) \|\| defined(__FMA__) \|\| \			#if defined(__ARM_FEATURE_FMA) \|\| (defined(__AVX2__) && defined(__FMA__)) \|\| \
	defined(__LIBC_RISCV_USE_FMA)			defined(__LIBC_RISCV_USE_FMA)
	#define LIBC_TARGET_CPU_HAS_FMA			#define LIBC_TARGET_CPU_HAS_FMA
	#endif			#endif

	#endif // LLVM_LIBC_SRC_SUPPORT_MACROS_PROPERTIES_CPU_FEATURES_H			#endif // LLVM_LIBC_SRC_SUPPORT_MACROS_PROPERTIES_CPU_FEATURES_H