From: Steven Bosscher <stevenb.gcc@gmail.com>
Date: Thu, 1 Nov 2007 21:03:50 +0000 (+0000)
Subject: re PR rtl-optimization/33828 (Issues with code hoisting implementation in gcse.c)
X-Git-Tag: releases/gcc-4.3.0~1709
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f8423fea8da09d34b08b9cec9a72a2d8c9ba42e7;p=thirdparty%2Fgcc.git

re PR rtl-optimization/33828 (Issues with code hoisting implementation in gcse.c)

	PR rtl-optimization/33828
	* gcse.c (compute_code_hoist_vbeinout): Fix order of computation
	of VBEIN and VBEOUT.

From-SVN: r129832
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a39ef31701a1..c790c1fa5ea3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2007-11-01  Steven Bosscher  <stevenb.gcc@gmail.com>
+
+	PR rtl-optimization/33828
+	* gcse.c (compute_code_hoist_vbeinout): Fix order of computation
+	of VBEIN and VBEOUT.
+
 2007-11-01  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	* optabs.c (prepare_cmp_insn): Merge a couple of conditional blocks.
diff --git a/gcc/gcse.c b/gcc/gcse.c
index a519acbf0545..b0a592d4d66c 100644
--- a/gcc/gcse.c
+++ b/gcc/gcse.c
@@ -4772,10 +4772,14 @@ compute_code_hoist_vbeinout (void)
 	 the convergence.  */
       FOR_EACH_BB_REVERSE (bb)
 	{
-	  changed |= sbitmap_a_or_b_and_c_cg (hoist_vbein[bb->index], antloc[bb->index],
-					      hoist_vbeout[bb->index], transp[bb->index]);
 	  if (bb->next_bb != EXIT_BLOCK_PTR)
-	    sbitmap_intersection_of_succs (hoist_vbeout[bb->index], hoist_vbein, bb->index);
+	    sbitmap_intersection_of_succs (hoist_vbeout[bb->index],
+					   hoist_vbein, bb->index);
+
+	  changed |= sbitmap_a_or_b_and_c_cg (hoist_vbein[bb->index],
+					      antloc[bb->index],
+					      hoist_vbeout[bb->index],
+					      transp[bb->index]);
 	}
 
       passes++;