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[patch] tree-phinodes.c: Speed up create_phi_node.
- From: Kazu Hirata <kazu at cs dot umass dot edu>
- To: gcc-patches at gcc dot gnu dot org
- Date: Fri, 29 Oct 2004 19:29:16 -0400 (EDT)
- Subject: [patch] tree-phinodes.c: Speed up create_phi_node.
Hi,
Attached is a patch to speed up create_phi_node.
make_phi_node zeros a newly allocated PHI node (and one taken out of
the free list), so we don't need to zero PHI_REWRITTEN again.
Tested on i686-pc-linux-gnu. OK to apply?
Kazu Hirata
2004-10-29 Kazu Hirata <kazu@cs.umass.edu>
* tree-phinodes.c (create_phi_node): Don't zero PHI_REWRITTEN.
Index: tree-phinodes.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-phinodes.c,v
retrieving revision 2.14
diff -u -d -p -r2.14 tree-phinodes.c
--- tree-phinodes.c 29 Oct 2004 21:41:30 -0000 2.14
+++ tree-phinodes.c 29 Oct 2004 22:11:47 -0000
@@ -276,10 +276,6 @@ create_phi_node (tree var, basic_block b
phi = make_phi_node (var, EDGE_COUNT (bb->preds));
- /* This is a new phi node, so note that is has not yet been
- rewritten. */
- PHI_REWRITTEN (phi) = 0;
-
/* Add the new PHI node to the list of PHI nodes for block BB. */
PHI_CHAIN (phi) = phi_nodes (bb);
bb_ann (bb)->phi_nodes = phi;