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Make improvements

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- Introduce portable sched_getcpu() api
- Support GCC's __target_clones__ feature
- Make fma() go faster on x86 in default mode
- Remove some asan checks from core libraries
- WinMain() now ensures $HOME and $USER are defined
This commit is contained in:
Justine Tunney 2024-02-01 03:39:46 -08:00
parent d5225a693b
commit 2ab9e9f7fd
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GPG key ID: BE714B4575D6E328
192 changed files with 2809 additions and 932 deletions
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7
libc/str/memmem.c
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@ -17,7 +17,6 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/likely.h"
#include "libc/str/str.h"
@ -32,16 +31,14 @@ typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
* @param needlelen is its character count
* @return pointer to first result or NULL if not found
*/
void *memmem(const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen) {
__vex void *memmem(const void *haystack, size_t haystacklen, const void *needle,
size_t needlelen) {
#if defined(__x86_64__) && !defined(__chibicc__)
char c;
xmm_t n;
const xmm_t *v;
unsigned i, k, m;
const char *p, *q, *e;
if (IsAsan()) __asan_verify(needle, needlelen);
if (IsAsan()) __asan_verify(haystack, haystacklen);
if (!needlelen) return (void *)haystack;
if (UNLIKELY(needlelen > haystacklen)) return 0;
q = needle;