summaryrefslogtreecommitdiffstats
path: root/contrib
diff options
context:
space:
mode:
authorobrien <obrien@FreeBSD.org>2007-12-11 03:35:39 +0000
committerobrien <obrien@FreeBSD.org>2007-12-11 03:35:39 +0000
commit436a93024264937812e640ef90fafffe1587c715 (patch)
tree5108b706c8903a1a66765ad2ecdca3702c6b2371 /contrib
parentb162aa2e5ac107cf3b97741e44870bb56d7c6d95 (diff)
downloadFreeBSD-src-436a93024264937812e640ef90fafffe1587c715.zip
FreeBSD-src-436a93024264937812e640ef90fafffe1587c715.tar.gz
Do not fold -C*ABS<n> to ABS<-C*n> (i.e., do not move negative constants
inside ABS expression). Obtained from: Richard Guenther <rguenther@suse.de> Approved by: core
Diffstat (limited to 'contrib')
-rw-r--r--contrib/gcc/fold-const.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/contrib/gcc/fold-const.c b/contrib/gcc/fold-const.c
index 5db1d84..ea16eae 100644
--- a/contrib/gcc/fold-const.c
+++ b/contrib/gcc/fold-const.c
@@ -5661,6 +5661,9 @@ extract_muldiv_1 (tree t, tree c, enum tree_code code, tree wide_type,
}
break;
}
+ /* If the constant is negative, we cannot simplify this. */
+ if (tree_int_cst_sgn (c) == -1)
+ break;
/* FALLTHROUGH */
case NEGATE_EXPR:
if ((t1 = extract_muldiv (op0, c, code, wide_type, strict_overflow_p))
OpenPOWER on IntegriCloud