- Changed keep logic: all nodes can be keeped yet, thi is necessary to fix fehler152

[libfirm] / ir / ir / irarch.c

diff --git a/ir/ir/irarch.c b/ir/ir/irarch.c
index 3513687..549b747 100644 (file)
--- a/ir/ir/irarch.c
+++ b/ir/ir/irarch.c
@@ -545,7 +545,7 @@ static ir_node *do_decomposition(ir_node *irn, ir_node *operand, tarval *tv) {
        inst = decompose_mul(&env, R, r, tv);
 
        /* the paper suggests 70% here */
-       mul_costs = (env.evaluate(MUL, tv) * 7) / 10;
+       mul_costs = (env.evaluate(MUL, tv) * 7 + 5) / 10;
        if (evaluate_insn(&env, inst) <= mul_costs && !env.fail) {
                env.op       = operand;
                env.blk      = get_nodes_block(irn);
@@ -634,7 +634,7 @@ static int tv_ld2(tarval *tv, int bits) {
 #define SHL(a, b) tarval_shl(a, b)
 #define SHR(a, b) tarval_shr(a, b)
 #define ADD(a, b) tarval_add(a, b)
-#define SUB(a, b) tarval_sub(a, b)
+#define SUB(a, b) tarval_sub(a, b, NULL)
 #define MUL(a, b) tarval_mul(a, b)
 #define DIV(a, b) tarval_div(a, b)
 #define MOD(a, b) tarval_mod(a, b)