1 files changed, 46 insertions, 0 deletions

diff --git a/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99415.patch b/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99415.patch
new file mode 100644
index 0000000000..3622ac4238
--- /dev/null
+++ b/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99415.patch
@@ -0,0 +1,46 @@
+2010-10-13  Chung-Lin Tang  <cltang@codesourcery.com>
+
+        Issue #8615
+
+        Backport from mainline:
+
+        2010-10-12  Chung-Lin Tang  <cltang@codesourcery.com>
+
+        gcc/
+        * config/arm/arm.h (ARM_EXPAND_ALIGNMENT): Rename from
+        DATA_ALIGNMENT and add COND parameter. Update comments above.
+        (DATA_ALIGNMENT): Use ARM_EXPAND_ALIGNMENT, with !optimize_size.
+        (LOCAL_ALIGNMENT): Use ARM_EXPAND_ALIGNMENT, with
+        !flag_conserve_stack.
+
+=== modified file 'gcc/config/arm/arm.h'
+Index: gcc-4.5/gcc/config/arm/arm.h
+===================================================================
+--- gcc-4.5.orig/gcc/config/arm/arm.h
++++ gcc-4.5/gcc/config/arm/arm.h
+@@ -596,15 +596,21 @@ extern int low_irq_latency;
+ /* Align definitions of arrays, unions and structures so that
+    initializations and copies can be made more efficient.  This is not
+    ABI-changing, so it only affects places where we can see the
+-   definition.  */
+-#define DATA_ALIGNMENT(EXP, ALIGN)                                     \
+-  ((((ALIGN) < BITS_PER_WORD)                                           \
++   definition. Increasing the alignment tends to introduce padding,
++   so don't do this when optimizing for size/conserving stack space. */
++#define ARM_EXPAND_ALIGNMENT(COND, EXP, ALIGN)                         \
++  (((COND) && ((ALIGN) < BITS_PER_WORD)                                        \
+     && (TREE_CODE (EXP) == ARRAY_TYPE                                  \
+        || TREE_CODE (EXP) == UNION_TYPE                                \
+        || TREE_CODE (EXP) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN))
+ 
++/* Align global data. */
++#define DATA_ALIGNMENT(EXP, ALIGN)                     \
++  ARM_EXPAND_ALIGNMENT(!optimize_size, EXP, ALIGN)
++
+ /* Similarly, make sure that objects on the stack are sensibly aligned.  */
+-#define LOCAL_ALIGNMENT(EXP, ALIGN) DATA_ALIGNMENT(EXP, ALIGN)
++#define LOCAL_ALIGNMENT(EXP, ALIGN)                            \
++  ARM_EXPAND_ALIGNMENT(!flag_conserve_stack, EXP, ALIGN)
+ 
+ /* Setting STRUCTURE_SIZE_BOUNDARY to 32 produces more efficient code, but the
+    value set in previous versions of this toolchain was 8, which produces more