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add some comments, DBG_OPT call
author
Michael Beck
<beck@ipd.info.uni-karlsruhe.de>
Wed, 17 Oct 2007 12:50:56 +0000
(12:50 +0000)
committer
Michael Beck
<beck@ipd.info.uni-karlsruhe.de>
Wed, 17 Oct 2007 12:50:56 +0000
(12:50 +0000)
[r16246]
ir/ir/iropt.c
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diff --git
a/ir/ir/iropt.c
b/ir/ir/iropt.c
index
916a2ce
..
e02a230
100644
(file)
--- a/
ir/ir/iropt.c
+++ b/
ir/ir/iropt.c
@@
-3177,6
+3177,9
@@
static ir_node *transform_node_Not(ir_node *n) {
* Optimize:
* -(~x) = x + 1
* -(a-b) = b - a
+ * -(a >>u (size-1)) = a >>s (size-1)
+ * -(a >>s (size-1)) = a >>u (size-1)
+ * -(a * const) -> a * -const
*/
static ir_node *transform_node_Minus(ir_node *n) {
ir_node *c, *oldn = n;
@@
-3252,6
+3255,7
@@
static ir_node *transform_node_Minus(ir_node *n) {
ir_graph *irg = current_ir_graph;
ir_node *block = get_nodes_block(a);
n = new_rd_Mul(dbg, irg, block, mul_l, cnst, mode);
+ DBG_OPT_ALGSIM2(oldn, a, n, FS_OPT_MINUS_MUL_C);
return n;
}
}