diff options
Diffstat (limited to 'gcc/gimple-ssa-strength-reduction.c')
| -rw-r--r-- | gcc/gimple-ssa-strength-reduction.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/gcc/gimple-ssa-strength-reduction.c b/gcc/gimple-ssa-strength-reduction.c index 873b8bcd7e9..57b343ab5cf 100644 --- a/gcc/gimple-ssa-strength-reduction.c +++ b/gcc/gimple-ssa-strength-reduction.c @@ -1829,16 +1829,20 @@ record_increment (slsr_cand_t c, double_int increment) if (c->kind == CAND_ADD && c->index == increment && (increment.sgt (double_int_one) - || increment.slt (double_int_minus_one))) + || increment.slt (double_int_minus_one)) + && (gimple_assign_rhs_code (c->cand_stmt) == PLUS_EXPR + || gimple_assign_rhs_code (c->cand_stmt) == POINTER_PLUS_EXPR)) { - tree t0; + tree t0 = NULL_TREE; tree rhs1 = gimple_assign_rhs1 (c->cand_stmt); tree rhs2 = gimple_assign_rhs2 (c->cand_stmt); if (operand_equal_p (rhs1, c->base_expr, 0)) t0 = rhs2; - else + else if (operand_equal_p (rhs2, c->base_expr, 0)) t0 = rhs1; - if (SSA_NAME_DEF_STMT (t0) && gimple_bb (SSA_NAME_DEF_STMT (t0))) + if (t0 + && SSA_NAME_DEF_STMT (t0) + && gimple_bb (SSA_NAME_DEF_STMT (t0))) { incr_vec[incr_vec_len].initializer = t0; incr_vec[incr_vec_len++].init_bb |