From: Roger Sayle <roger@eyesopen.com>
Date: Tue, 12 Aug 2003 01:43:31 +0000 (+0000)
Subject: fold-const.c (fold): Optimize any associative floating point operator with...
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=af7b5c1c00a3ee89369358ef8a53f4b4b74bbbf9;p=gcc.git

fold-const.c (fold): Optimize any associative floating point operator with...


	* fold-const.c (fold): Optimize any associative floating point
	operator with -funsafe-math-optimizations, not just MULT_EXPR.

From-SVN: r70348
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 959f77debdd..39d3f203361 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-08-11  Roger Sayle  <roger@eyesopen.com>
+
+	* fold-const.c (fold): Optimize any associative floating point
+	operator with -funsafe-math-optimizations, not just MULT_EXPR.
+
 2003-08-11  Kaz Kojima  <kkojima@gcc.gnu.org>
 
 	* config/sh/lib1funcs.asm (__udivdi3): Add .type and .size
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 9333c590747..9db9f2e5257 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -5803,13 +5803,11 @@ fold (tree expr)
     associate:
       /* In most languages, can't associate operations on floats through
 	 parentheses.  Rather than remember where the parentheses were, we
-	 don't associate floats at all.  It shouldn't matter much.  However,
-	 associating multiplications is only very slightly inaccurate, so do
-	 that if -funsafe-math-optimizations is specified.  */
+	 don't associate floats at all, unless the user has specified
+	 -funsafe-math-optimizations.  */
 
       if (! wins
-	  && (! FLOAT_TYPE_P (type)
-	      || (flag_unsafe_math_optimizations && code == MULT_EXPR)))
+	  && (! FLOAT_TYPE_P (type) || flag_unsafe_math_optimizations))
 	{
 	  tree var0, con0, lit0, minus_lit0;
 	  tree var1, con1, lit1, minus_lit1;