Predefined defines on arm64-macOS

[Martin Storsjö]

With Xcode 12.2 on arm64 macOS:

$ : | gcc -E -dM - | sort > predefs.out
$ grep -i '\(apple\|mach\|arm\|aarch\)' predefs.out
#define __AARCH64EL__ 1
#define __AARCH64_SIMD__ 1
#define __APPLE_CC__ 6000
#define __APPLE__ 1
#define __ARM64_ARCH_8__ 1
#define __ARM_64BIT_STATE 1
#define __ARM_ACLE 200
#define __ARM_ALIGN_MAX_STACK_PWR 4
#define __ARM_ARCH 8
#define __ARM_ARCH_8_3__ 1
#define __ARM_ARCH_ISA_A64 1
#define __ARM_ARCH_PROFILE 'A'
#define __ARM_FEATURE_CLZ 1
#define __ARM_FEATURE_COMPLEX 1
#define __ARM_FEATURE_CRC32 1
#define __ARM_FEATURE_CRYPTO 1
#define __ARM_FEATURE_DIRECTED_ROUNDING 1
#define __ARM_FEATURE_DIV 1
#define __ARM_FEATURE_FMA 1
#define __ARM_FEATURE_FP16_SCALAR_ARITHMETIC 1
#define __ARM_FEATURE_FP16_VECTOR_ARITHMETIC 1
#define __ARM_FEATURE_IDIV 1
#define __ARM_FEATURE_JCVT 1
#define __ARM_FEATURE_LDREX 0xF
#define __ARM_FEATURE_NUMERIC_MAXMIN 1
#define __ARM_FEATURE_QRDMX 1
#define __ARM_FEATURE_UNALIGNED 1
#define __ARM_FP 0xE
#define __ARM_FP16_ARGS 1
#define __ARM_FP16_FORMAT_IEEE 1
#define __ARM_NEON 1
#define __ARM_NEON_FP 0xE
#define __ARM_NEON__ 1
#define __ARM_PCS_AAPCS64 1
#define __ARM_SIZEOF_MINIMAL_ENUM 4
#define __ARM_SIZEOF_WCHAR_T 4
#define __MACH__ 1
#define __VERSION__ "Apple LLVM 12.0.0 (clang-1200.0.32.27)"
#define __aarch64__ 1
#define __apple_build_version__ 12000032
#define __arm64 1
#define __arm64__ 1




// Martin