Finally reverted parts of my escaped patch. (quilt sucks).

From-SVN: r135607

gcc/config/i386/i386-protos.h

@@ -134,10 +134,7 @@ extern rtx ix86_libcall_value (enum machine_mode);
 extern bool ix86_function_value_regno_p (int);
 extern bool ix86_function_arg_regno_p (int);
 extern int ix86_function_arg_boundary (enum machine_mode, tree);
-extern bool ix86_return_in_memory (const_tree, const_tree);
 extern bool ix86_sol10_return_in_memory (const_tree,const_tree);
-extern bool ix86_i386elf_return_in_memory (const_tree,const_tree);
-extern bool ix86_i386interix_return_in_memory (const_tree,const_tree);
 extern rtx ix86_force_to_memory (enum machine_mode, rtx);
 extern void ix86_free_from_memory (enum machine_mode);
 extern void ix86_split_fp_branch (enum rtx_code code, rtx, rtx,

gcc/config/i386/i386.c

@@ -4901,17 +4901,21 @@ return_in_memory_ms_64 (const_tree type, enum machine_mode mode)
   return (size != 1 && size != 2 && size != 4 && size != 8);
 }
 
-bool
+static bool
 ix86_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED)
 {
-  const enum machine_mode mode = type_natural_mode (type);
-
+#ifdef SUBTARGET_RETURN_IN_MEMORY
+  return SUBTARGET_RETURN_IN_MEMORY (type, fntype);
+#else
+   const enum machine_mode mode = type_natural_mode (type);
+ 
   if (TARGET_64BIT_MS_ABI)
-    return return_in_memory_ms_64 (type, mode);
-  else if (TARGET_64BIT)
-    return return_in_memory_64 (type, mode);
-  else
-    return return_in_memory_32 (type, mode);
+     return return_in_memory_ms_64 (type, mode);
+   else if (TARGET_64BIT)
+     return return_in_memory_64 (type, mode);
+   else
+     return return_in_memory_32 (type, mode);
+#endif
 }
 
 /* Return false iff TYPE is returned in memory.  This version is used
@@ -4951,20 +4955,6 @@ ix86_sol10_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED
   return size > 12;
 }
 
-bool
-ix86_i386elf_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED)
-{
-  return (TYPE_MODE (type) == BLKmode
-	  || (VECTOR_MODE_P (TYPE_MODE (type)) && int_size_in_bytes (type) == 8));
-}
-
-bool
-ix86_i386interix_return_in_memory (const_tree type, const_tree fntype ATTRIBUTE_UNUSED)
-{
-  return (TYPE_MODE (type) == BLKmode
-          || (AGGREGATE_TYPE_P (type) && int_size_in_bytes(type) > 8 ));
-}
-
 /* When returning SSE vector types, we have a choice of either
      (1) being abi incompatible with a -march switch, or
      (2) generating an error.
@@ -25795,6 +25785,9 @@ x86_builtin_vectorization_cost (bool runtime_test)
 }
 
 /* Initialize the GCC target structure.  */
+#undef TARGET_RETURN_IN_MEMORY
+#define TARGET_RETURN_IN_MEMORY ix86_return_in_memory
+
 #undef TARGET_ATTRIBUTE_TABLE
 #define TARGET_ATTRIBUTE_TABLE ix86_attribute_table
 #if TARGET_DLLIMPORT_DECL_ATTRIBUTES

gcc/config/i386/i386.h

@@ -1261,25 +1261,6 @@ do {									\
 
 #define GOT_SYMBOL_NAME "_GLOBAL_OFFSET_TABLE_"
 
-/* A C expression which can inhibit the returning of certain function
-   values in registers, based on the type of value.  A nonzero value
-   says to return the function value in memory, just as large
-   structures are always returned.  Here TYPE will be a C expression
-   of type `tree', representing the data type of the value.
-
-   Note that values of mode `BLKmode' must be explicitly handled by
-   this macro.  Also, the option `-fpcc-struct-return' takes effect
-   regardless of this macro.  On most systems, it is possible to
-   leave the macro undefined; this causes a default definition to be
-   used, whose value is the constant 1 for `BLKmode' values, and 0
-   otherwise.
-
-   Do not use this macro to indicate that structures and unions
-   should always be returned in memory.  You should instead use
-   `DEFAULT_PCC_STRUCT_RETURN' to indicate this.  */
-
-#define TARGET_RETURN_IN_MEMORY ix86_return_in_memory
-
 /* This is overridden by <cygwin.h>.  */
 #define MS_AGGREGATE_RETURN 0