diff options
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 09373dd..1416871 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -1997,10 +1997,14 @@ shorten_compare (tree *op0_ptr, tree *op1_ptr, tree *restype_ptr, if (TREE_TYPE (primop1) != *restype_ptr) { - tree tmp = convert (*restype_ptr, primop1); - TREE_OVERFLOW (tmp) = TREE_OVERFLOW (primop1); - TREE_CONSTANT_OVERFLOW (tmp) = TREE_CONSTANT_OVERFLOW (primop1); - primop1 = tmp; + /* Convert primop1 to target type, but do not introduce + additional overflow. We know primop1 is an int_cst. */ + tree tmp = build_int_2 (TREE_INT_CST_LOW (primop1), + TREE_INT_CST_HIGH (primop1)); + + TREE_TYPE (tmp) = *restype_ptr; + primop1 = force_fit_type (tmp, 0, TREE_OVERFLOW (primop1), + TREE_CONSTANT_OVERFLOW (primop1)); } if (type != *restype_ptr) { |