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[gomp4, committed] Add get_virtual_phi
- From: Tom de Vries <Tom_deVries at mentor dot com>
- To: "gcc-patches at gnu dot org" <gcc-patches at gnu dot org>
- Cc: Jakub Jelinek <jakub at redhat dot com>, Richard Biener <rguenther at suse dot de>
- Date: Wed, 24 Jun 2015 10:57:40 +0200
- Subject: [gomp4, committed] Add get_virtual_phi
- Authentication-results: sourceware.org; auth=none
Hi,
this patch factors new function get_virtual_phi out of
rewrite_virtuals_into_loop_closed_ssa.
Committed to gomp-4_0-branch.
Thanks,
- Tom
Add get_virtual_phi
2015-06-18 Tom de Vries <tom@codesourcery.com>
* tree-ssa-loop-manip.c (get_virtual_phi): Factor out of ...
(rewrite_virtuals_into_loop_closed_ssa): ... here.
---
gcc/tree-ssa-loop-manip.c | 44 ++++++++++++++++++++------------------------
1 file changed, 20 insertions(+), 24 deletions(-)
diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c
index 0d2c972..b7c3676 100644
--- a/gcc/tree-ssa-loop-manip.c
+++ b/gcc/tree-ssa-loop-manip.c
@@ -603,6 +603,24 @@ replace_uses_in_dominated_bbs (tree old_val, tree new_val, basic_block bb)
BITMAP_FREE (dominated);
}
+/* Return the virtual phi in BB. */
+
+static gphi *
+get_virtual_phi (basic_block bb)
+{
+ for (gphi_iterator gsi = gsi_start_phis (bb);
+ !gsi_end_p (gsi);
+ gsi_next (&gsi))
+ {
+ gphi *phi = gsi.phi ();
+
+ if (virtual_operand_p (PHI_RESULT (phi)))
+ return phi;
+ }
+
+ return NULL;
+}
+
/* Ensure a virtual phi is present in the exit block, if LOOP contains a vdef.
In other words, ensure loop-closed ssa normal form for virtuals. */
@@ -612,35 +630,13 @@ rewrite_virtuals_into_loop_closed_ssa (struct loop *loop)
gphi *phi;
edge exit = single_dom_exit (loop);
- phi = NULL;
- for (gphi_iterator gsi = gsi_start_phis (loop->header);
- !gsi_end_p (gsi);
- gsi_next (&gsi))
- {
- if (virtual_operand_p (PHI_RESULT (gsi.phi ())))
- {
- phi = gsi.phi ();
- break;
- }
- }
-
+ phi = get_virtual_phi (loop->header);
if (phi == NULL)
return;
tree final_loop = PHI_ARG_DEF_FROM_EDGE (phi, single_succ_edge (loop->latch));
- phi = NULL;
- for (gphi_iterator gsi = gsi_start_phis (exit->dest);
- !gsi_end_p (gsi);
- gsi_next (&gsi))
- {
- if (virtual_operand_p (PHI_RESULT (gsi.phi ())))
- {
- phi = gsi.phi ();
- break;
- }
- }
-
+ phi = get_virtual_phi (exit->dest);
if (phi != NULL)
{
tree final_exit = PHI_ARG_DEF_FROM_EDGE (phi, exit);
--
1.9.1