diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index f6d5af4..19aa722 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -10532,30 +10532,6 @@ fold_binary_loc (location_t loc, TREE_OPERAND (arg1, 0), arg0); } - /* Transform comparisons of the form C - X CMP X if C % 2 == 1. */ - if (TREE_CODE (arg0) == MINUS_EXPR - && TREE_CODE (TREE_OPERAND (arg0, 0)) == INTEGER_CST - && operand_equal_p (tree_strip_nop_conversions (TREE_OPERAND (arg0, - 1)), - arg1, 0) - && wi::extract_uhwi (TREE_OPERAND (arg0, 0), 0, 1) == 1) - return omit_two_operands_loc (loc, type, - code == NE_EXPR - ? boolean_true_node : boolean_false_node, - TREE_OPERAND (arg0, 1), arg1); - - /* Transform comparisons of the form X CMP C - X if C % 2 == 1. */ - if (TREE_CODE (arg1) == MINUS_EXPR - && TREE_CODE (TREE_OPERAND (arg1, 0)) == INTEGER_CST - && operand_equal_p (tree_strip_nop_conversions (TREE_OPERAND (arg1, - 1)), - arg0, 0) - && wi::extract_uhwi (TREE_OPERAND (arg1, 0), 0, 1) == 1) - return omit_two_operands_loc (loc, type, - code == NE_EXPR - ? boolean_true_node : boolean_false_node, - TREE_OPERAND (arg1, 1), arg0); - /* If this is an EQ or NE comparison with zero and ARG0 is (1 << foo) & bar, convert it to (bar >> foo) & 1. Both require two operations, but the latter can be done in one less insn |