| 文件 | 最后提交记录 | 最后更新时间 |
|---|---|---|
[libc] add cpu feature flags for SVE/SVE2/MOPS (#166884) Add in SVE/SVE2/MOPS features for aarch64 cpus. These features may be interesting for future memory/math routines. SVE/SVE2 are now being accepted in more implementations: ❯ echo | clang-21 -dM -E - -march=native | grep -i ARM_FEAT #define __ARM_FEATURE_ATOMICS 1 #define __ARM_FEATURE_BF16 1 #define __ARM_FEATURE_BF16_SCALAR_ARITHMETIC 1 #define __ARM_FEATURE_BF16_VECTOR_ARITHMETIC 1 #define __ARM_FEATURE_BTI 1 #define __ARM_FEATURE_CLZ 1 #define __ARM_FEATURE_COMPLEX 1 #define __ARM_FEATURE_CRC32 1 #define __ARM_FEATURE_DIRECTED_ROUNDING 1 #define __ARM_FEATURE_DIV 1 #define __ARM_FEATURE_DOTPROD 1 #define __ARM_FEATURE_FMA 1 #define __ARM_FEATURE_FP16_SCALAR_ARITHMETIC 1 #define __ARM_FEATURE_FP16_VECTOR_ARITHMETIC 1 #define __ARM_FEATURE_FRINT 1 #define __ARM_FEATURE_IDIV 1 #define __ARM_FEATURE_JCVT 1 #define __ARM_FEATURE_LDREX 0xF #define __ARM_FEATURE_MATMUL_INT8 1 #define __ARM_FEATURE_NUMERIC_MAXMIN 1 #define __ARM_FEATURE_PAUTH 1 #define __ARM_FEATURE_QRDMX 1 #define __ARM_FEATURE_RCPC 1 #define __ARM_FEATURE_SVE 1 #define __ARM_FEATURE_SVE2 1 #define __ARM_FEATURE_SVE_BF16 1 #define __ARM_FEATURE_SVE_MATMUL_INT8 1 #define __ARM_FEATURE_SVE_VECTOR_OPERATORS 2 #define __ARM_FEATURE_UNALIGNED 1 MOPS is another set of extension for string operations, but may not be generally available for now: ❯ echo | clang-21 -dM -E - -march=armv9.2a+mops | grep -i MOPS #define __ARM_FEATURE_MOPS 1 | 8 个月前 | |
[libc] Update some __builtin_* usage to be compatible with MSVC. (#157870) __builtin_trap, __builtin_expect, __builtin_ctz*, __builtin_clz*, __builtin_popcount*. | 10 个月前 | |
[libc] Add documentation for the macros folder | 3 年前 | |
| 9 个月前 | ||
[libc] Some MSVC compatibility changes for src/string/memory_utils. (#158393) | 10 个月前 | |
[libc] Don't rely on LIBC_HAS_SANITIZER when enabling null checks. (#150341) LIBC_HAS_SANITIZER (which is defined if ASan, MSan, or UBSan is enabled) is currently used to implicitly disable null checks, normally enabled via LIBC_ADD_NULL_CHECKS config value. Remove this condition, and rely purely on the config value instead: * LIBC_HAS_SANITIZER will be true even for UBSan modes which doesn't rely on null checks at all (e.g. -fsanitize=alignment) * null checks today (implemented via __builtin_trap) should function normally today even when sanitizer is enabled - trap is still a trap * tests have been migrated to WITH_SIGNAL(-1) which doesn't prescript a particular signal / exit-code, and thus should pass even if sanitizers override the default ones. | 1 年前 | |
[libc] Some compatibility update for building with MSVC. (#157701) Add compiler identity macro and disable some unsupported features. | 10 个月前 | |
[libc] Don't rely on LIBC_HAS_SANITIZER when enabling null checks. (#150341) LIBC_HAS_SANITIZER (which is defined if ASan, MSan, or UBSan is enabled) is currently used to implicitly disable null checks, normally enabled via LIBC_ADD_NULL_CHECKS config value. Remove this condition, and rely purely on the config value instead: * LIBC_HAS_SANITIZER will be true even for UBSan modes which doesn't rely on null checks at all (e.g. -fsanitize=alignment) * null checks today (implemented via __builtin_trap) should function normally today even when sanitizer is enabled - trap is still a trap * tests have been migrated to WITH_SIGNAL(-1) which doesn't prescript a particular signal / exit-code, and thus should pass even if sanitizers override the default ones. | 1 年前 |
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