diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0084-PR-tree-optimization-48377.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0084-PR-tree-optimization-48377.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0084-PR-tree-optimization-48377.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0084-PR-tree-optimization-48377.patch new file mode 100644 index 000000000..e3c000bb3 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0084-PR-tree-optimization-48377.patch @@ -0,0 +1,68 @@ +From eba70fb9976ef047a8fb8dc6499c42e8fd3551f7 Mon Sep 17 00:00:00 2001 +From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Fri, 8 Apr 2011 11:45:29 +0000 +Subject: [PATCH 084/200] PR tree-optimization/48377 + * tree-vect-data-refs.c (vector_alignment_reachable_p): Set + is_packed to true even for types with smaller TYPE_ALIGN than + TYPE_SIZE. + + * gcc.dg/vect/pr48377.c: New test. + + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@172174 138bc75d-0d04-0410-961f-82ee72b054a4 + +index 5295c71..270462e 100644 +new file mode 100644 +index 0000000..e0cde43 +--- /dev/null ++++ b/gcc/testsuite/gcc.dg/vect/pr48377.c +@@ -0,0 +1,25 @@ ++/* PR tree-optimization/48377 */ ++/* { dg-do run } */ ++ ++typedef unsigned int U __attribute__((__aligned__ (1), __may_alias__)); ++ ++__attribute__((noinline, noclone)) unsigned int ++foo (const char *s, int len) ++{ ++ const U *p = (const U *) s; ++ unsigned int f = len / sizeof (unsigned int), hash = len, i; ++ ++ for (i = 0; i < f; ++i) ++ hash += *p++; ++ return hash; ++} ++ ++char buf[64] __attribute__((aligned (32))); ++ ++int ++main (void) ++{ ++ return foo (buf + 1, 26) != 26; ++} ++ ++/* { dg-final { cleanup-tree-dump "vect" } } */ +diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c +index 2c9936c..a1437b5 100644 +--- a/gcc/tree-vect-data-refs.c ++++ b/gcc/tree-vect-data-refs.c +@@ -1,5 +1,5 @@ + /* Data References Analysis and Manipulation Utilities for Vectorization. +- Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 ++ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 + Free Software Foundation, Inc. + Contributed by Dorit Naishlos <dorit@il.ibm.com> + and Ira Rosen <irar@il.ibm.com> +@@ -1143,6 +1143,9 @@ vector_alignment_reachable_p (struct data_reference *dr) + if (ba) + is_packed = contains_packed_reference (ba); + ++ if (compare_tree_int (TYPE_SIZE (type), TYPE_ALIGN (type)) > 0) ++ is_packed = true; ++ + if (vect_print_dump_info (REPORT_DETAILS)) + fprintf (vect_dump, "Unknown misalignment, is_packed = %d",is_packed); + if (targetm.vectorize.vector_alignment_reachable (type, is_packed)) +-- +1.7.0.4 + |