From: Richard Stallman <rms@gnu.org>
Date: Sat, 6 Mar 1993 00:48:19 +0000 (+0000)
Subject: (expand_assignment): Special handling for storing in RESULT_DECL.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=86d38d25ba2f6583291319bae57481a75aed48bd;p=gcc.git

(expand_assignment): Special handling for storing in RESULT_DECL.

From-SVN: r3663
---

diff --git a/gcc/expr.c b/gcc/expr.c
index aa98632678d..3ff238ca1c1 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -2765,6 +2765,16 @@ expand_assignment (to, from, want_value, suggest_reg)
   if (to_rtx == 0)
     to_rtx = expand_expr (to, NULL_RTX, VOIDmode, 0);
 
+  /* Don't move directly into a return register.  */
+  if (TREE_CODE (to) == RESULT_DECL && GET_CODE (to_rtx) == REG)
+    {
+      rtx temp = expand_expr (from, 0, VOIDmode, 0);
+      emit_move_insn (to_rtx, temp);
+      preserve_temp_slots (to_rtx);
+      free_temp_slots ();
+      return to_rtx;
+    }
+
   /* In case we are returning the contents of an object which overlaps
      the place the value is being stored, use a safe function when copying
      a value through a pointer into a structure value return block.  */