Do not optimize a+a into 2*a for non-integer modes

[r15478]

diff --git a/ir/ir/iropt.c b/ir/ir/iropt.c
index fb1dac9..4b7192d 100644 (file)
--- a/ir/ir/iropt.c
+++ b/ir/ir/iropt.c
@@ -1912,7 +1912,7 @@ static ir_node *transform_node_Add(ir_node *n) {
                return n;
 
        if (mode_is_num(mode)) {
                return n;
 
        if (mode_is_num(mode)) {

-               if (a == b) {
+               if (a == b && mode_is_int(mode)) {

                        ir_node *block = get_irn_n(n, -1);
 
                        n = new_rd_Mul(
                        ir_node *block = get_irn_n(n, -1);
 
                        n = new_rd_Mul(