diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0260-PR-tree-optimization-48975.patch')
-rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0260-PR-tree-optimization-48975.patch | 61 |
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 @@ | |||
1 | From 29bc62bdd8a23a670e844de980879c53a7ab493b Mon Sep 17 00:00:00 2001 | ||
2 | From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | ||
3 | Date: Thu, 12 May 2011 17:46:15 +0000 | ||
4 | Subject: [PATCH] PR tree-optimization/48975 | ||
5 | * tree-if-conv.c (combine_blocks): Call free_bb_predicate | ||
6 | on all bbs here and free and clear ifc_bbs at the end. | ||
7 | |||
8 | * gcc.dg/pr48975.c: New test. | ||
9 | |||
10 | |||
11 | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@173710 138bc75d-0d04-0410-961f-82ee72b054a4 | ||
12 | |||
13 | index 81b52db..12ceb8e 100644 | ||
14 | new file mode 100644 | ||
15 | index 0000000..58658d8 | ||
16 | --- /dev/null | ||
17 | +++ b/gcc/testsuite/gcc.dg/pr48975.c | ||
18 | @@ -0,0 +1,18 @@ | ||
19 | +/* PR tree-optimization/48975 */ | ||
20 | +/* { dg-do compile } */ | ||
21 | +/* { dg-options "-O3 -ffast-math -fno-tree-slp-vectorize" } */ | ||
22 | + | ||
23 | +static int | ||
24 | +foo (int x) | ||
25 | +{ | ||
26 | + return (x > 0) ? 0 : x + 1; | ||
27 | +} | ||
28 | + | ||
29 | +void | ||
30 | +bar (unsigned int x) | ||
31 | +{ | ||
32 | + int l = 1; | ||
33 | +lab: | ||
34 | + while (x) | ||
35 | + x = foo (x); | ||
36 | +} | ||
37 | diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c | ||
38 | index d70e232..a77186a 100644 | ||
39 | --- a/gcc/tree-if-conv.c | ||
40 | +++ b/gcc/tree-if-conv.c | ||
41 | @@ -1604,6 +1604,7 @@ combine_blocks (struct loop *loop) | ||
42 | for (i = 0; i < orig_loop_num_nodes; i++) | ||
43 | { | ||
44 | bb = ifc_bbs[i]; | ||
45 | + free_bb_predicate (bb); | ||
46 | if (bb_with_exit_edge_p (loop, bb)) | ||
47 | { | ||
48 | exit_bb = bb; | ||
49 | @@ -1679,6 +1680,9 @@ combine_blocks (struct loop *loop) | ||
50 | && exit_bb != loop->header | ||
51 | && can_merge_blocks_p (loop->header, exit_bb)) | ||
52 | merge_blocks (loop->header, exit_bb); | ||
53 | + | ||
54 | + free (ifc_bbs); | ||
55 | + ifc_bbs = NULL; | ||
56 | } | ||
57 | |||
58 | /* If-convert LOOP when it is legal. For the moment this pass has no | ||
59 | -- | ||
60 | 1.7.0.4 | ||
61 | |||