diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index df397f7..946a2fb 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -2348,8 +2348,17 @@ truth_value_p (enum tree_code code) int operand_equal_p (tree arg0, tree arg1, unsigned int flags) { + /* If one is specified and the other isn't, they aren't equal and if + neither is specified, they are. + + ??? This is temporary and is meant only to handle the cases of the + optional operands for COMPONENT_REF and ARRAY_REF. */ + if ((arg0 && !arg1) || (!arg0 && arg1)) + return 0; + else if (!arg0 && !arg1) + return 1; /* If either is ERROR_MARK, they aren't equal. */ - if (TREE_CODE (arg0) == ERROR_MARK || TREE_CODE (arg1) == ERROR_MARK) + else if (TREE_CODE (arg0) == ERROR_MARK || TREE_CODE (arg1) == ERROR_MARK) return 0; /* If both types don't have the same signedness, then we can't consider @@ -2483,13 +2492,26 @@ operand_equal_p (tree arg0, tree arg1, unsigned int flags) return operand_equal_p (TREE_OPERAND (arg0, 0), TREE_OPERAND (arg1, 0), flags); - case COMPONENT_REF: case ARRAY_REF: case ARRAY_RANGE_REF: return (operand_equal_p (TREE_OPERAND (arg0, 0), TREE_OPERAND (arg1, 0), flags) && operand_equal_p (TREE_OPERAND (arg0, 1), - TREE_OPERAND (arg1, 1), flags)); + TREE_OPERAND (arg1, 1), flags) + && operand_equal_p (TREE_OPERAND (arg0, 2), + TREE_OPERAND (arg1, 2), flags) + && operand_equal_p (TREE_OPERAND (arg0, 3), + TREE_OPERAND (arg1, 3), flags)); + + + case COMPONENT_REF: + return (operand_equal_p (TREE_OPERAND (arg0, 0), + TREE_OPERAND (arg1, 0), flags) + && operand_equal_p (TREE_OPERAND (arg0, 1), + TREE_OPERAND (arg1, 1), flags) + && operand_equal_p (TREE_OPERAND (arg0, 2), + TREE_OPERAND (arg1, 2), flags)); + case BIT_FIELD_REF: return (operand_equal_p (TREE_OPERAND (arg0, 0), |