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-rw-r--r--gcc-4.9/gcc/testsuite/gcc.dg/20030414-2.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/20030414-2.c b/gcc-4.9/gcc/testsuite/gcc.dg/20030414-2.c
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+++ b/gcc-4.9/gcc/testsuite/gcc.dg/20030414-2.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 2003 Free Software Foundation.
+
+ Check that constant folding (c1 - x) op c2 into x swap(op) c1-c2
+ doesn't break anything.
+
+ Written by Roger Sayle, 27th March 2003. */
+
+/* { dg-do run } */
+/* { dg-options "-O2 -ffast-math" } */
+
+extern void abort (void);
+
+int foo(double x)
+{
+ return (10.0 - x) > 3.0;
+}
+
+int bar (double x)
+{
+ return (10.0 - x) == 5.0;
+}
+
+int main()
+{
+ if (foo (8.0))
+ abort ();
+
+ if (! foo (6.0))
+ abort ();
+
+ if (bar (1.0))
+ abort ();
+
+ if (! bar (5.0))
+ abort ();
+ return 0;
+}
+