(expand_call): If PCC_STATIC_STRUCT_RETURN and TARGET

is zero, copy result from static location.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@4677 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/calls.c b/gcc/calls.c
index 4e0e4e2..03dbdfb 100644 (file)
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -1838,15 +1838,21 @@ expand_call (exp, target, ignore)
     {
       if (target == 0)
        {
-         target = gen_rtx (MEM, TYPE_MODE (TREE_TYPE (exp)),
-                           copy_to_reg (valreg));
-         MEM_IN_STRUCT_P (target)
-           = (TREE_CODE (TREE_TYPE (exp)) == ARRAY_TYPE
-              || TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE
-              || TREE_CODE (TREE_TYPE (exp)) == UNION_TYPE
-              || TREE_CODE (TREE_TYPE (exp)) == QUAL_UNION_TYPE);
+         /* We used leave the value in the location that it is
+            returned in, but that causes problems if it is used more
+            than once in one expression.  Rather than trying to track
+            when a copy is required, we always copy when TARGET is
+            not specified.  This calling sequence is only used on
+            a few machines and TARGET is usually nonzero.  */
+         if (TYPE_MODE (TREE_TYPE (exp)) == BLKmode)
+           target = assign_stack_temp (BLKmode,
+                                       int_size_in_bytes (TREE_TYPE (exp)),
+                                       1);
+         else
+           target = gen_reg_rtx (TYPE_MODE (TREE_TYPE (exp)));
        }
-      else if (TYPE_MODE (TREE_TYPE (exp)) != BLKmode)
+
+      if (TYPE_MODE (TREE_TYPE (exp)) != BLKmode)
        emit_move_insn (target, gen_rtx (MEM, TYPE_MODE (TREE_TYPE (exp)),
                                         copy_to_reg (valreg)));
       else