From: Richard Guenther <rguenther@suse.de>
Date: Fri, 10 Jun 2011 12:19:30 +0000 (+0000)
Subject: re PR tree-optimization/49361 (Huge 470.lbm regression)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7871eee372692f471507a857b8eac77598fbdb03;p=gcc.git

re PR tree-optimization/49361 (Huge 470.lbm regression)

2011-06-10  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/49361
	* fold-const.c (fold_binary_loc): Only fold x * x to pow (x, 2.0)
	when not already in gimple form.

From-SVN: r174903
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d64b513128a..29a87a34541 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-06-10  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/49361
+	* fold-const.c (fold_binary_loc): Only fold x * x to pow (x, 2.0)
+	when not already in gimple form.
+
 2011-06-10  Richard Guenther  <rguenther@suse.de>
 
 	PR bootstrap/49344
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 9a3f8cb0fec..e1a497eda96 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -10519,7 +10519,8 @@ fold_binary_loc (location_t loc,
 		}
 
 	      /* Optimize x*x as pow(x,2.0), which is expanded as x*x.  */
-	      if (optimize_function_for_speed_p (cfun)
+	      if (!in_gimple_form
+		  && optimize_function_for_speed_p (cfun)
 		  && operand_equal_p (arg0, arg1, 0))
 		{
 		  tree powfn = mathfn_built_in (type, BUILT_IN_POW);