diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0379-PR-tree-optimization-49093.patch')
-rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0379-PR-tree-optimization-49093.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/0379-PR-tree-optimization-49093.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0379-PR-tree-optimization-49093.patch new file mode 100644 index 0000000000..d4dbe83486 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0379-PR-tree-optimization-49093.patch @@ -0,0 +1,61 @@ +From 3fb16a9ff349672beb2818d1139bb689ee424da4 Mon Sep 17 00:00:00 2001 +From: irar <irar@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Thu, 2 Jun 2011 07:02:57 +0000 +Subject: [PATCH] PR tree-optimization/49093 + * tree-vect-data-refs.c (vect_analyze_data_refs): Fail for + volatile data references. + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174559 138bc75d-0d04-0410-961f-82ee72b054a4 + +index 5ae1848..20fdeec 100644 +new file mode 100644 +index 0000000..b8bded6 +--- /dev/null ++++ b/gcc/testsuite/gcc.dg/vect/pr49093.c +@@ -0,0 +1,22 @@ ++/* { dg-do compile } */ ++/* { dg-options "-O1 -ftree-vectorize -fdump-tree-vect-details -fno-tree-fre" } */ ++ ++volatile unsigned char g_324[4] = {0, 1, 0, 1}; ++void foo (int); ++int x, y; ++void func_81(void) ++{ ++ int l_466, l_439[7] = {0}, g_97; ++lbl_473: ++ if (x) { ++ for (g_97 = 0; (g_97 < 4); ++g_97) { ++ if (y) ++ goto lbl_473; ++ g_324[g_97]; ++ l_466 = l_439[g_97]; ++ } ++ foo(l_466); ++ } ++} ++ ++/* { dg-final { cleanup-tree-dump "vect" } } */ +diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c +index a1437b5..db5098c 100644 +--- a/gcc/tree-vect-data-refs.c ++++ b/gcc/tree-vect-data-refs.c +@@ -2577,6 +2577,16 @@ vect_analyze_data_refs (loop_vec_info loop_vinfo, + return false; + } + ++ if (TREE_THIS_VOLATILE (DR_REF (dr))) ++ { ++ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) ++ { ++ fprintf (vect_dump, "not vectorized: volatile type "); ++ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM); ++ } ++ return false; ++ } ++ + base = unshare_expr (DR_BASE_ADDRESS (dr)); + offset = unshare_expr (DR_OFFSET (dr)); + init = unshare_expr (DR_INIT (dr)); +-- +1.7.0.4 + |