From: J"orn Rennecke <amylaar@cygnus.co.uk>
Date: Fri, 29 Jan 1999 14:36:59 +0000 (+0000)
Subject: * loop.c (recombine_givs): Don't try to derive givs that have combined.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5310566c09b16e37a1db3ea358f03e3efef7ee46;p=gcc.git

* loop.c (recombine_givs): Don't try to derive givs that have combined.

From-SVN: r24906
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3e9552c6249..476d746a934 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jan 29 22:34:41 1999  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* loop.c (recombine_givs): Don't try to derive givs that have combined.
+
 Fri Jan 29 15:00:39 1999  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* toplev.c (notice, fnotice): Check ANSI_PROTOTYPES, not __STDC__,
diff --git a/gcc/loop.c b/gcc/loop.c
index 11728f08663..b0e7e87c923 100644
--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -7272,16 +7272,13 @@ recombine_givs (bl, loop_start, loop_end, unroll_p)
 	  rtx sum;
 
 	  v = giv_array[stats[i].giv_number];
-	  if (v->giv_type != DEST_REG || v->derived)
+	  if (v->giv_type != DEST_REG || v->derived || v->same)
 	    continue;
 	  if (! last_giv)
 	    {
-	      if (! v->same)
-		{
-		  last_giv = v;
-		  life_start = stats[i].start_luid;
-		  life_end = stats[i].end_luid;
-		}
+	      last_giv = v;
+	      life_start = stats[i].start_luid;
+	      life_end = stats[i].end_luid;
 	      continue;
 	    }
 	  /* Use unsigned arithmetic to model loop wrap around.  */