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| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-08-30 11:52:15 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-08-30 11:52:15 +0000 |
| commit | 15ff9e2f26a52378f7c3b21896bab011abcf882c (patch) | |
| tree | 26810ef3d7ceee20229132ebc9fa4eda39210d05 /gcc/fold-const.c | |
| parent | cad0d474818927a2b7df258d34c28cf3a44a4331 (diff) | |
| download | gcc-15ff9e2f26a52378f7c3b21896bab011abcf882c.tar.gz | |
2013-08-30 Richard Biener <rguenther@suse.de>
* fold-const.c (fold_single_bit_test): Fix overflow test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202103 138bc75d-0d04-0410-961f-82ee72b054a4
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 1e0e7e5f985..f959f0a14a0 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); |