From: Andreas Krebbel <krebbel1@de.ibm.com>
Date: Wed, 9 Nov 2005 11:34:56 +0000 (+0000)
Subject: flow.c (mark_set_1): Handle CLOBBERs like SETs if the register is live afterwards.
X-Git-Tag: releases/gcc-4.1.0~973
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7221b4a18ceb8d291f2d6f5f0d9f2b1bfccc058e;p=thirdparty%2Fgcc.git

flow.c (mark_set_1): Handle CLOBBERs like SETs if the register is live afterwards.

2005-11-09  Andreas Krebbel  <krebbel1@de.ibm.com>

	* flow.c (mark_set_1): Handle CLOBBERs like SETs if the register
	is live afterwards.

From-SVN: r106686
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1b5992b419eb..eddcaa9ab377 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2005-11-09  Andreas Krebbel  <krebbel1@de.ibm.com>
+
+	* flow.c (mark_set_1): Handle CLOBBERs like SETs if the register
+	is live afterwards.
+
 2005-11-08  Bernd Schmidt  <bernd.schmidt@analog.com>
 
 	* config/bfin/t-bfin-elf (MULTILIB_OPTIONS, MULTILIB_DEFAULTS,
diff --git a/gcc/flow.c b/gcc/flow.c
index 1fc88b64f1f4..bdb40323b02a 100644
--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -2816,7 +2816,7 @@ mark_set_1 (struct propagate_block_info *pbi, enum rtx_code code, rtx reg, rtx c
 	      else
 		SET_REGNO_REG_SET (pbi->local_set, i);
 	    }
-	  if (code != CLOBBER)
+	  if (code != CLOBBER || needed_regno)
 	    SET_REGNO_REG_SET (pbi->new_set, i);
 
 	  some_was_live |= needed_regno;