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| author | Richard Biener <rguenther@suse.de> | 2013-08-30 11:52:15 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2013-08-30 11:52:15 +0000 |
| commit | 26d75703036bbdd170c157fd70a5ff1a29c27f22 (patch) | |
| tree | 26810ef3d7ceee20229132ebc9fa4eda39210d05 /gcc/fold-const.c | |
| parent | f7e088e7de99b6ab31dc56d2a3ed358647207256 (diff) | |
| download | gcc-26d75703036bbdd170c157fd70a5ff1a29c27f22.zip gcc-26d75703036bbdd170c157fd70a5ff1a29c27f22.tar.gz gcc-26d75703036bbdd170c157fd70a5ff1a29c27f22.tar.bz2 | |
fold-const.c (fold_single_bit_test): Fix overflow test.
2013-08-30 Richard Biener <rguenther@suse.de>
* fold-const.c (fold_single_bit_test): Fix overflow test.
From-SVN: r202103
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 1e0e7e5..f959f0a 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -6634,10 +6634,10 @@ fold_single_bit_test (location_t loc, enum tree_code code, not overflow, adjust BITNUM and INNER. */ if (TREE_CODE (inner) == RSHIFT_EXPR && TREE_CODE (TREE_OPERAND (inner, 1)) == INTEGER_CST - && TREE_INT_CST_HIGH (TREE_OPERAND (inner, 1)) == 0 + && host_integerp (TREE_OPERAND (inner, 1), 1) && bitnum < TYPE_PRECISION (type) - && 0 > compare_tree_int (TREE_OPERAND (inner, 1), - bitnum - TYPE_PRECISION (type))) + && (TREE_INT_CST_LOW (TREE_OPERAND (inner, 1)) + < (unsigned) (TYPE_PRECISION (type) - bitnum))) { bitnum += TREE_INT_CST_LOW (TREE_OPERAND (inner, 1)); inner = TREE_OPERAND (inner, 0); |