* arm.c (arm_return_in_memory): Add handling for vector return types.

[pf3gnuchains/gcc-fork.git] / gcc / config / arm / arm.c

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index c1d1fa8..4129a99 100644 (file)
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -2467,6 +2467,7 @@ arm_return_in_memory (tree type)
   HOST_WIDE_INT size;
 
   if (!AGGREGATE_TYPE_P (type) &&
   HOST_WIDE_INT size;
 
   if (!AGGREGATE_TYPE_P (type) &&

+      (TREE_CODE (type) != VECTOR_TYPE) &&

       !(TARGET_AAPCS_BASED && TREE_CODE (type) == COMPLEX_TYPE))
     /* All simple types are returned in registers.
        For AAPCS, complex types are treated the same as aggregates.  */
       !(TARGET_AAPCS_BASED && TREE_CODE (type) == COMPLEX_TYPE))
     /* All simple types are returned in registers.
        For AAPCS, complex types are treated the same as aggregates.  */


@@ -2481,6 +2482,11 @@ arm_return_in_memory (tree type)
       return (size < 0 || size > UNITS_PER_WORD);
     }
 
       return (size < 0 || size > UNITS_PER_WORD);
     }
 

+  /* To maximize backwards compatibility with previous versions of gcc,
+     return vectors up to 4 words in registers.  */
+  if (TREE_CODE (type) == VECTOR_TYPE)
+    return (size < 0 || size > (4 * UNITS_PER_WORD));
+

   /* For the arm-wince targets we choose to be compatible with Microsoft's
      ARM and Thumb compilers, which always return aggregates in memory.  */
 #ifndef ARM_WINCE
   /* For the arm-wince targets we choose to be compatible with Microsoft's
      ARM and Thumb compilers, which always return aggregates in memory.  */
 #ifndef ARM_WINCE