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-rw-r--r--gcc/tree-data-ref.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c
index 5505ba4..3bf460c 100644
--- a/gcc/tree-data-ref.c
+++ b/gcc/tree-data-ref.c
@@ -754,7 +754,9 @@ split_constant_offset_1 (tree type, tree op0, enum tree_code code, tree op1,
&& TYPE_PRECISION (type) >= TYPE_PRECISION (itype)
&& (POINTER_TYPE_P (type) || INTEGRAL_TYPE_P (type)))
{
- if (INTEGRAL_TYPE_P (itype) && TYPE_OVERFLOW_WRAPS (itype))
+ if (INTEGRAL_TYPE_P (itype) && TYPE_OVERFLOW_WRAPS (itype)
+ && (TYPE_PRECISION (type) > TYPE_PRECISION (itype)
+ || TYPE_UNSIGNED (itype) != TYPE_UNSIGNED (type)))
{
/* Split the unconverted operand and try to prove that
wrapping isn't a problem. */