From: Daniel Berlin <dberlin@dberlin.org>
Date: Sun, 13 May 2007 21:52:10 +0000 (+0000)
Subject: re PR tree-optimization/31911 (Short function (md4) takes very long to compile)
X-Git-Tag: releases/gcc-4.3.0~5114
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4076455d9b899d573198d0f7296cb8b5a4fb3ddb;p=thirdparty%2Fgcc.git

re PR tree-optimization/31911 (Short function (md4) takes very long to compile)

2007-05-13  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR tree-optimization/31911
	* tree-ssa-pre.c (phi_translate): Make sure to cache results even
	if they didn't change the expression.

From-SVN: r124657
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e3380b50b8ce..46ee450c5fd0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2007-05-13  Daniel Berlin  <dberlin@dberlin.org>
+
+	Fix PR tree-optimization/31911
+	* tree-ssa-pre.c (phi_translate): Make sure to cache results even
+	if they didn't change the expression.
+
 2007-05-13  Zdenek Dvorak  <dvorakz@suse.cz>
 
 	* tree-scalar-evolution.c (resolve_mixers): Exported.
diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c
index 7275acf07fbc..46332112cda0 100644
--- a/gcc/tree-ssa-pre.c
+++ b/gcc/tree-ssa-pre.c
@@ -1075,8 +1075,8 @@ phi_translate (tree expr, bitmap_set_t set1, bitmap_set_t set2,
 		newexpr->base.ann = NULL;
 		vn_lookup_or_add_with_vuses (newexpr, tvuses);
 		expr = newexpr;
-		phi_trans_add (oldexpr, newexpr, pred, tvuses);
 	      }
+	    phi_trans_add (oldexpr, expr, pred, tvuses);
 	  }
       }
       return expr;
@@ -1188,8 +1188,8 @@ phi_translate (tree expr, bitmap_set_t set1, bitmap_set_t set2,
 		vn_lookup_or_add_with_vuses (newexpr, newvuses);
 	      }
 	    expr = newexpr;
-	    phi_trans_add (oldexpr, newexpr, pred, newvuses);
 	  }
+	phi_trans_add (oldexpr, expr, pred, newvuses);
       }
       return expr;
       break;
@@ -1233,8 +1233,8 @@ phi_translate (tree expr, bitmap_set_t set1, bitmap_set_t set2,
 		vn_lookup_or_add (newexpr, NULL);
 	      }
 	    expr = newexpr;
-	    phi_trans_add (oldexpr, newexpr, pred, NULL);
 	  }
+	phi_trans_add (oldexpr, expr, pred, NULL);
       }
       return expr;
 
@@ -1266,8 +1266,8 @@ phi_translate (tree expr, bitmap_set_t set1, bitmap_set_t set2,
 		vn_lookup_or_add (newexpr, NULL);
 	      }
 	    expr = newexpr;
-	    phi_trans_add (oldexpr, newexpr, pred, NULL);
 	  }
+	phi_trans_add (oldexpr, expr, pred, NULL);
       }
       return expr;