From: Richard Sandiford <rsandifo@nildram.co.uk>
Date: Sun, 20 Jan 2008 08:47:14 +0000 (+0000)
Subject: global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per input.
X-Git-Tag: releases/gcc-4.3.0~517
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ecff8c1c5d2542c055f3ec12c58d94221e1745ec;p=thirdparty%2Fgcc.git

global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per input.

gcc/
	* global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per
	input.

From-SVN: r131676
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 28a4a5499731..4a327d48025c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-01-20  Richard Sandiford  <rsandifo@nildram.co.uk>
+
+	* global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per
+	input.
+
 2008-01-19  Kenneth Zadeck <zadeck@naturalbridge.com>
 
 	PR rtl-optimization/26854
diff --git a/gcc/global.c b/gcc/global.c
index c805f572c7fe..b8a0ec781585 100644
--- a/gcc/global.c
+++ b/gcc/global.c
@@ -1016,8 +1016,13 @@ find_reg (int num, HARD_REG_SET losers, int alt_regs_p, int accept_call_clobbere
   if (allocno[num].no_eh_reg)
     {
       unsigned int j;
-      for (j = 0; EH_RETURN_DATA_REGNO (j) != INVALID_REGNUM; j++)
-	SET_HARD_REG_BIT (used1, EH_RETURN_DATA_REGNO (j));
+      for (j = 0; ; ++j)
+	{
+	  unsigned int regno = EH_RETURN_DATA_REGNO (j);
+	  if (regno == INVALID_REGNUM)
+	    break;
+	  SET_HARD_REG_BIT (used1, regno);
+	}
     }
 #endif