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Improve dead code elimination

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This commit is contained in:
Justine Tunney 2021-02-08 04:04:42 -08:00
parent 760db8c5ad
commit 0e36cb3ac4
6606 changed files with 9685 additions and 9854 deletions
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12
libc/calls/releasefd.c
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@ -21,9 +21,11 @@
void __releasefd(int fd) {
int x;
g_fds.p[fd].kind = kFdEmpty;
do {
x = g_fds.f;
if (fd >= x) break;
} while (!cmpxchg(&g_fds.f, x, fd));
if (!__vforked && 0 <= fd && fd < g_fds.n) {
g_fds.p[fd].kind = kFdEmpty;
do {
x = g_fds.f;
if (fd >= x) break;
} while (!cmpxchg(&g_fds.f, x, fd));
}
}