From: Roger Sayle <roger@eyesopen.com>
Date: Tue, 28 Mar 2006 19:38:28 +0000 (+0000)
Subject: expr.c (emit_group_store): Only create a new pseudo reg if the quantity it needs... 
X-Git-Tag: releases/gcc-4.2.0~3524
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5ac6066999aa237c43921072b397f98b497d7706;p=thirdparty%2Fgcc.git

expr.c (emit_group_store): Only create a new pseudo reg if the quantity it needs to hold isn't already a...


	* expr.c (emit_group_store): Only create a new pseudo reg if the
	quantity it needs to hold isn't already a suitable pseudo.

From-SVN: r112469
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 09e625a15ff4..58952cdebd01 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2006-03-28  Roger Sayle   <roger@eyesopen.com>
+
+	* expr.c (emit_group_store): Only create a new pseudo reg if the
+	quantity it needs to hold isn't already a suitable pseudo.
+
 2006-03-28  Jeff Law  <law@redhat.com>
 
 	* timevar.def (TV_TREE_PHI_CPROP): New timevar.
diff --git a/gcc/expr.c b/gcc/expr.c
index 2d5c359e1392..f579e27c865d 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -1890,8 +1890,13 @@ emit_group_store (rtx orig_dst, rtx src, tree type ATTRIBUTE_UNUSED, int ssize)
   for (i = start; i < XVECLEN (src, 0); i++)
     {
       rtx reg = XEXP (XVECEXP (src, 0, i), 0);
-      tmps[i] = gen_reg_rtx (GET_MODE (reg));
-      emit_move_insn (tmps[i], reg);
+      if (!REG_P (reg) || REGNO (reg) < FIRST_PSEUDO_REGISTER)
+	{
+	  tmps[i] = gen_reg_rtx (GET_MODE (reg));
+	  emit_move_insn (tmps[i], reg);
+	}
+      else
+	tmps[i] = reg;
     }
 
   /* If we won't be storing directly into memory, protect the real destination
@@ -1918,7 +1923,8 @@ emit_group_store (rtx orig_dst, rtx src, tree type ATTRIBUTE_UNUSED, int ssize)
     }
   else if (!MEM_P (dst) && GET_CODE (dst) != CONCAT)
     {
-      dst = gen_reg_rtx (GET_MODE (orig_dst));
+      if (!REG_P (dst) || REGNO (dst) < FIRST_PSEUDO_REGISTER)
+	dst = gen_reg_rtx (GET_MODE (orig_dst));
       /* Make life a bit easier for combine.  */
       emit_move_insn (dst, CONST0_RTX (GET_MODE (orig_dst)));
     }