diff options
| author | Chris Metcalf <cmetcalf@mellanox.com> | 2017-12-05 10:24:56 -0500 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@mellanox.com> | 2017-12-05 10:24:56 -0500 |
| commit | f18b8dc7d7ef3f01804e241d40f92faf480264c0 (patch) | |
| tree | afdff9b17e2e45a11f18d5ea87a22c6705949d73 /sysdeps/tile/tilegx/strnlen.c | |
| parent | 446d22e91d3113be57a4b0d1151cf337458c3bec (diff) | |
| download | glibc-f18b8dc7d7ef3f01804e241d40f92faf480264c0.tar glibc-f18b8dc7d7ef3f01804e241d40f92faf480264c0.tar.gz glibc-f18b8dc7d7ef3f01804e241d40f92faf480264c0.tar.bz2 glibc-f18b8dc7d7ef3f01804e241d40f92faf480264c0.zip | |
tilegx: work around vector insn bug in gcc
Avoid an issue in gcc where some of the vector (aka SIMD) ops will
sometimes end up getting wrongly optimized out. We use these
instructions in many of the string implementations. If/when we
have an upstreamed fix for this problem in gcc we can conditionalize
the use of the extended assembly workaround in glibc.
Diffstat (limited to 'sysdeps/tile/tilegx/strnlen.c')
| -rw-r--r-- | sysdeps/tile/tilegx/strnlen.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/tile/tilegx/strnlen.c b/sysdeps/tile/tilegx/strnlen.c index 5d73a14926..c3560d208d 100644 --- a/sysdeps/tile/tilegx/strnlen.c +++ b/sysdeps/tile/tilegx/strnlen.c @@ -37,7 +37,7 @@ __strnlen (const char *s, size_t maxlen) uint64_t v = *p | MASK (s_int); uint64_t bits; - while ((bits = __insn_v1cmpeqi (v, 0)) == 0) + while ((bits = v1cmpeqi (v, 0)) == 0) { if (bytes_read >= maxlen) { |