From: Nathan Sidwell <nathan@codesourcery.com>
Date: Thu, 1 Dec 2005 15:03:23 +0000 (+0000)
Subject: * config/ms1/ms1.c (ms1_reorg_hazard): Don't count noop moves.
X-Git-Tag: releases/gcc-4.2.0~5640
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=96fd03a4d5c51d70222b2a2470699dfc52ee8d10;p=thirdparty%2Fgcc.git

* config/ms1/ms1.c (ms1_reorg_hazard): Don't count noop moves.

From-SVN: r107821
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 17808f0f7387..28a1856011ce 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,7 @@
 2005-12-01  Nathan Sidwell  <nathan@codesourcery.com>
 
+	* config/ms1/ms1.c (ms1_reorg_hazard): Don't count noop moves.
+
 	* vec.h (VEC_block_remove): New.
 
 2005-12-01  Gabriel Dos Reis  <gdr@integrable-solutions.net>
diff --git a/gcc/config/ms1/ms1.c b/gcc/config/ms1/ms1.c
index 19f02a1c7469..9bc5138d4c3b 100644
--- a/gcc/config/ms1/ms1.c
+++ b/gcc/config/ms1/ms1.c
@@ -1915,7 +1915,16 @@ ms1_reorg_hazard (void)
 		      break;
 		    }
 		}
-	      count -= INSN_CODE (prev) >= 0;
+
+	      if (INSN_CODE (prev) >= 0)
+		{
+		  rtx set = single_set (prev);
+
+		  /* A noop set will get deleted in a later split pass,
+	     	     so we can't count on it for hazard avoidance.  */
+		  if (!set || !set_noop_p (set))
+		    count--;
+		}
 	    }
 
 	  if (rescan)