diff options
Diffstat (limited to 'gcc-4.8/gcc/gimple-ssa-strength-reduction.c')
| -rw-r--r-- | gcc-4.8/gcc/gimple-ssa-strength-reduction.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc-4.8/gcc/gimple-ssa-strength-reduction.c b/gcc-4.8/gcc/gimple-ssa-strength-reduction.c index 5cda3873e..a1d1a11f0 100644 --- a/gcc-4.8/gcc/gimple-ssa-strength-reduction.c +++ b/gcc-4.8/gcc/gimple-ssa-strength-reduction.c @@ -735,16 +735,19 @@ create_mul_imm_cand (gimple gs, tree base_in, tree stride_in, bool speed) X = Y * c ============================ X = (B + i') * (S * c) */ - base = base_cand->base_expr; - index = base_cand->index; temp = tree_to_double_int (base_cand->stride) * tree_to_double_int (stride_in); + if (double_int_fits_to_tree_p (TREE_TYPE (stride_in), temp)) + { + base = base_cand->base_expr; + index = base_cand->index; stride = double_int_to_tree (TREE_TYPE (stride_in), temp); ctype = base_cand->cand_type; if (has_single_use (base_in)) savings = (base_cand->dead_savings + stmt_cost (base_cand->cand_stmt, speed)); } + } else if (base_cand->kind == CAND_ADD && operand_equal_p (base_cand->stride, integer_one_node, 0)) { |