diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index d754bee..b080d85 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -2830,8 +2830,6 @@ maybe_lvalue_p (const_tree x) case TARGET_EXPR: case COND_EXPR: case BIND_EXPR: - case MIN_EXPR: - case MAX_EXPR: break; default: @@ -6512,7 +6510,19 @@ extract_muldiv_1 (tree t, tree c, enum tree_code code, tree wide_type, /* If this was a subtraction, negate OP1 and set it to be an addition. This simplifies the logic below. */ if (tcode == MINUS_EXPR) - tcode = PLUS_EXPR, op1 = negate_expr (op1); + { + tcode = PLUS_EXPR, op1 = negate_expr (op1); + /* If OP1 was not easily negatable, the constant may be OP0. */ + if (TREE_CODE (op0) == INTEGER_CST) + { + tree tem = op0; + op0 = op1; + op1 = tem; + tem = t1; + t1 = t2; + t2 = tem; + } + } if (TREE_CODE (op1) != INTEGER_CST) break; |