diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/gimple-ssa-store-merging.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/gimple-ssa-store-merging.c b/gcc/gimple-ssa-store-merging.c index e7c90ba..a00370e 100644 --- a/gcc/gimple-ssa-store-merging.c +++ b/gcc/gimple-ssa-store-merging.c @@ -871,12 +871,18 @@ find_bswap_or_nop_finalize (struct symbolic_number *n, uint64_t *cmpxchg, { mask = ((uint64_t) 1 << (rsize * BITS_PER_MARKER)) - 1; *cmpxchg &= mask; - *cmpnop >>= (n->range - rsize) * BITS_PER_MARKER; + if (n->range - rsize == sizeof (int64_t)) + *cmpnop = 0; + else + *cmpnop >>= (n->range - rsize) * BITS_PER_MARKER; } else { mask = ((uint64_t) 1 << (rsize * BITS_PER_MARKER)) - 1; - *cmpxchg >>= (n->range - rsize) * BITS_PER_MARKER; + if (n->range - rsize == sizeof (int64_t)) + *cmpxchg = 0; + else + *cmpxchg >>= (n->range - rsize) * BITS_PER_MARKER; *cmpnop &= mask; } n->range = rsize; |