diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 33467eb..7718759 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -8397,6 +8397,29 @@ fold_unary (enum tree_code code, tree type, tree op0) TREE_OPERAND (arg0, 1))))) return fold_build2 (BIT_XOR_EXPR, type, fold_convert (type, TREE_OPERAND (arg0, 0)), tem); + /* Perform BIT_NOT_EXPR on each element individually. */ + else if (TREE_CODE (arg0) == VECTOR_CST) + { + tree elements = TREE_VECTOR_CST_ELTS (arg0), elem, list = NULL_TREE; + int count = TYPE_VECTOR_SUBPARTS (type), i; + + for (i = 0; i < count; i++) + { + if (elements) + { + elem = TREE_VALUE (elements); + elem = fold_unary (BIT_NOT_EXPR, TREE_TYPE (type), elem); + if (elem == NULL_TREE) + break; + elements = TREE_CHAIN (elements); + } + else + elem = build_int_cst (TREE_TYPE (type), -1); + list = tree_cons (NULL_TREE, elem, list); + } + if (i == count) + return build_vector (type, nreverse (list)); + } return NULL_TREE; @@ -10485,7 +10508,8 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) if (TREE_CODE (arg0) == BIT_NOT_EXPR && operand_equal_p (TREE_OPERAND (arg0, 0), arg1, 0)) { - t1 = build_int_cst_type (type, -1); + t1 = fold_convert (type, integer_zero_node); + t1 = fold_unary (BIT_NOT_EXPR, type, t1); return omit_one_operand (type, t1, arg1); } @@ -10493,7 +10517,8 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) if (TREE_CODE (arg1) == BIT_NOT_EXPR && operand_equal_p (arg0, TREE_OPERAND (arg1, 0), 0)) { - t1 = build_int_cst_type (type, -1); + t1 = fold_convert (type, integer_zero_node); + t1 = fold_unary (BIT_NOT_EXPR, type, t1); return omit_one_operand (type, t1, arg0); } @@ -10599,7 +10624,8 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) if (TREE_CODE (arg0) == BIT_NOT_EXPR && operand_equal_p (TREE_OPERAND (arg0, 0), arg1, 0)) { - t1 = build_int_cst_type (type, -1); + t1 = fold_convert (type, integer_zero_node); + t1 = fold_unary (BIT_NOT_EXPR, type, t1); return omit_one_operand (type, t1, arg1); } @@ -10607,7 +10633,8 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) if (TREE_CODE (arg1) == BIT_NOT_EXPR && operand_equal_p (arg0, TREE_OPERAND (arg1, 0), 0)) { - t1 = build_int_cst_type (type, -1); + t1 = fold_convert (type, integer_zero_node); + t1 = fold_unary (BIT_NOT_EXPR, type, t1); return omit_one_operand (type, t1, arg0); } |