diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index c38a633..5545ecf 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -9183,24 +9183,11 @@ fold_comparison (location_t loc, enum tree_code code, tree type, fold_convert_loc (loc, newtype, targ0), fold_convert_loc (loc, newtype, targ1)); - /* (-a) CMP (-b) -> b CMP a */ - if (TREE_CODE (arg0) == NEGATE_EXPR - && TREE_CODE (arg1) == NEGATE_EXPR) - return fold_build2_loc (loc, code, type, TREE_OPERAND (arg1, 0), - TREE_OPERAND (arg0, 0)); - if (TREE_CODE (arg1) == REAL_CST) { REAL_VALUE_TYPE cst; cst = TREE_REAL_CST (arg1); - /* (-a) CMP CST -> a swap(CMP) (-CST) */ - if (TREE_CODE (arg0) == NEGATE_EXPR) - return fold_build2_loc (loc, swap_tree_comparison (code), type, - TREE_OPERAND (arg0, 0), - build_real (TREE_TYPE (arg1), - real_value_negate (&cst))); - /* IEEE doesn't distinguish +0 and -0 in comparisons. */ /* a CMP (-0) -> a CMP 0 */ if (REAL_VALUE_MINUS_ZERO (cst)) |