From: Richard Kenner <kenner@gcc.gnu.org>
Date: Tue, 16 Apr 1996 10:21:39 +0000 (-0400)
Subject: (expand_assignment): Don't pre-evaluate RHS if a CALL_EXPR with a
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b35cd3c16c6bcbeddfac00f6c2cfc8b83b14a372;p=gcc.git

(expand_assignment): Don't pre-evaluate RHS if a CALL_EXPR with a
variable-size return.

From-SVN: r11804
---

diff --git a/gcc/expr.c b/gcc/expr.c
index e29b404b69e..512a083937f 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -2803,6 +2803,7 @@ expand_assignment (to, from, want_value, suggest_reg)
      Handling this in the normal way is safe because no computation is done
      before the call.  */
   if (TREE_CODE (from) == CALL_EXPR && ! aggregate_value_p (from)
+      && TREE_CODE (TYPE_SIZE (TREE_TYPE (from))) == INTEGER_CST
       && ! (TREE_CODE (to) == VAR_DECL && GET_CODE (DECL_RTL (to)) == REG))
     {
       rtx value;