1 files changed, 61 insertions, 0 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0260-PR-tree-optimization-48975.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0260-PR-tree-optimization-48975.patch
new file mode 100644
index 0000000000..15f98a3823
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0260-PR-tree-optimization-48975.patch
@@ -0,0 +1,61 @@
+From 29bc62bdd8a23a670e844de980879c53a7ab493b Mon Sep 17 00:00:00 2001
+From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Thu, 12 May 2011 17:46:15 +0000
+Subject: [PATCH]        PR tree-optimization/48975
+        * tree-if-conv.c (combine_blocks): Call free_bb_predicate
+        on all bbs here and free and clear ifc_bbs at the end.
+
+        * gcc.dg/pr48975.c: New test.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@173710 138bc75d-0d04-0410-961f-82ee72b054a4
+
+index 81b52db..12ceb8e 100644
+new file mode 100644
+index 0000000..58658d8
+--- /dev/null
++++ b/gcc/testsuite/gcc.dg/pr48975.c
+@@ -0,0 +1,18 @@
++/* PR tree-optimization/48975 */
++/* { dg-do compile } */
++/* { dg-options "-O3 -ffast-math -fno-tree-slp-vectorize" } */
++
++static int
++foo (int x)
++{
++  return (x > 0) ? 0 : x + 1;
++}
++
++void
++bar (unsigned int x)
++{
++  int l = 1;
++lab:
++  while (x)
++    x = foo (x);
++}
+diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c
+index d70e232..a77186a 100644
+--- a/gcc/tree-if-conv.c
++++ b/gcc/tree-if-conv.c
+@@ -1604,6 +1604,7 @@ combine_blocks (struct loop *loop)
+   for (i = 0; i < orig_loop_num_nodes; i++)
+     {
+       bb = ifc_bbs[i];
++      free_bb_predicate (bb);
+       if (bb_with_exit_edge_p (loop, bb))
+        {
+          exit_bb = bb;
+@@ -1679,6 +1680,9 @@ combine_blocks (struct loop *loop)
+       && exit_bb != loop->header
+       && can_merge_blocks_p (loop->header, exit_bb))
+     merge_blocks (loop->header, exit_bb);
++
++  free (ifc_bbs);
++  ifc_bbs = NULL;
+ }
+ 
+ /* If-convert LOOP when it is legal.  For the moment this pass has no
+-- 
+1.7.0.4
+