1 files changed, 43 insertions, 0 deletions

diff --git a/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99391.patch b/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99391.patch
new file mode 100644
index 0000000000..31122e34be
--- /dev/null
+++ b/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99391.patch
@@ -0,0 +1,43 @@
+2010-09-08  Tom de Vries  <tom@codesourcery.com>
+
+        gcc/
+        * gcc/emit-rtl.c (set_mem_attributes_minus_bitpos): Set MEM_READONLY_P
+        for static const strings.
+        * gcc/testsuite/gcc.dg/memcpy-3.c: New test.
+
+ 2010-09-13  Andrew Stubbs  <ams@codesourcery.com>
+ 
+        gcc/
+
+=== modified file 'gcc/emit-rtl.c'
+--- old/gcc/emit-rtl.c  2009-11-27 12:00:28 +0000
++++ new/gcc/emit-rtl.c  2010-09-15 16:40:06 +0000
+@@ -1648,6 +1648,11 @@
+          MEM_READONLY_P (ref) = 1;
+        }
+ 
++      /* Mark static const strings readonly as well.  */
++      if (base && TREE_CODE (base) == STRING_CST && TREE_READONLY (base)
++         && TREE_STATIC (base))
++       MEM_READONLY_P (ref) = 1;
++
+       /* If this expression uses it's parent's alias set, mark it such
+         that we won't change it.  */
+       if (component_uses_parent_alias_set (t))
+
+=== added file 'gcc/testsuite/gcc.dg/memcpy-3.c'
+--- old/gcc/testsuite/gcc.dg/memcpy-3.c 1970-01-01 00:00:00 +0000
++++ new/gcc/testsuite/gcc.dg/memcpy-3.c 2010-09-15 16:40:06 +0000
+@@ -0,0 +1,11 @@
++/* { dg-do compile } */
++/* { dg-options "-O2 -fdump-rtl-expand" } */
++
++void
++f1 (char *p)
++{
++  __builtin_memcpy (p, "123", 3);
++}
++
++/* { dg-final { scan-rtl-dump-times "mem/s/u:" 3 "expand" { target mips*-*-* } } } */
++/* { dg-final { cleanup-rtl-dump "expand" } } */
+