From: Doug Kwan <dougkwan@google.com>
Date: Thu, 8 Oct 2009 22:16:58 +0000 (+0000)
Subject: re PR rtl-optimization/41574 (Distribute floating point expressions causes bad code... 
X-Git-Tag: releases/gcc-4.5.0~3021
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=88beb54d682d594a8321394e4103812447ee5dfa;p=thirdparty%2Fgcc.git

re PR rtl-optimization/41574 (Distribute floating point expressions causes bad code [4.4 only])

2009-10-08  Doug Kwan  <dougkwan@google.com>

	PR rtl-optimization/41574
	* gcc.dg/pr41574.c: New test.

From-SVN: r152580
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 65e739fe7121..f7872c97995a 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2009-10-08  Doug Kwan  <dougkwan@google.com>
+
+	PR rtl-optimization/41574
+	* gcc.dg/pr41574.c: New test.
+
 2009-10-08  Cary Coutant  <ccoutant@google.com>
 
 	Add support for debugging with ICF (Identical Code Folding).
diff --git a/gcc/testsuite/gcc.dg/pr41574.c b/gcc/testsuite/gcc.dg/pr41574.c
new file mode 100644
index 000000000000..f5ddcb2fcc84
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr41574.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=armv7-a -mfloat-abi=softfp -mfpu=neon -fno-unsafe-math-optimizations -fdump-rtl-combine" { target { arm*-*-* } } } */
+/* { dg-options "-O2 -fno-unsafe-math-optimizations -fdump-rtl-combine" { target { ! arm*-*-* } } } */
+
+
+static const double one=1.0;
+
+double
+f(double x)
+{
+  return x*(one+x);
+}
+
+/* { dg-final { scan-rtl-dump-not "\\(plus:DF \\(mult:DF" "combine" } } */
+/* { dg-final { cleanup-rtl-dump "combine*" } } */