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authorJeff Law <law@redhat.com>2018-08-27 14:31:14 -0600
committerJeff Law <law@gcc.gnu.org>2018-08-27 14:31:14 -0600
commit6a2a69287c6cbcfa31cd9dcb13cfdf40cdd29d8e (patch)
tree2af41dc3ee0ba312d0a99440762f15ab9fd150f4 /gcc/tree-ssa-dse.c
parentd4714a1b5eb458fb233024ef16b0dda6e712d632 (diff)
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tree-ssa-dse.c (compute_trims): Handle case where the reference's type does not have a TYPE_SIZE_UNIT.
* tree-ssa-dse.c (compute_trims): Handle case where the reference's type does not have a TYPE_SIZE_UNIT. * gcc.c-torture/compile/dse.c: New test. From-SVN: r263896
Diffstat (limited to 'gcc/tree-ssa-dse.c')
-rw-r--r--gcc/tree-ssa-dse.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/tree-ssa-dse.c b/gcc/tree-ssa-dse.c
index 016aa6c..bddbbe8 100644
--- a/gcc/tree-ssa-dse.c
+++ b/gcc/tree-ssa-dse.c
@@ -252,6 +252,7 @@ compute_trims (ao_ref *ref, sbitmap live, int *trim_head, int *trim_tail,
/* But don't trim away out of bounds accesses, as this defeats
proper warnings. */
if (*trim_tail
+ && TYPE_SIZE_UNIT (TREE_TYPE (ref->base))
&& compare_tree_int (TYPE_SIZE_UNIT (TREE_TYPE (ref->base)),
last_orig) <= 0)
*trim_tail = 0;