Testcases for canonical mips nmadd/nmsub patterns with or w/o fast-math.

* gcc.dg/mips-nmadd-1.c: New test.
* gcc.dg/mips-nmadd-2.c: New test.

From-SVN: r86147

gcc/testsuite/ChangeLog

@@ -4,6 +4,9 @@
 	* gcc.dg/mips-movcc-2.c: New test.
 	* gcc.dg/mips-movcc-3.c: New test.
 
+	* gcc.dg/mips-nmadd-1.c: New test.
+	* gcc.dg/mips-nmadd-2.c: New test.
+
 2004-08-17  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/15871

gcc/testsuite/gcc.dg/mips-nmadd-1.c

+/* { dg-do compile { target "mips*-*-*" } } */
+/* { dg-options "-O2 -ffast-math -mips4" } */
+/* { dg-final { scan-assembler "nmadd.s" } } */
+/* { dg-final { scan-assembler "nmadd.d" } } */
+/* { dg-final { scan-assembler "nmsub.s" } } */
+/* { dg-final { scan-assembler "nmsub.d" } } */
+
+float
+sub1 (float f, float g, float h)
+{
+  return -((f * g) + h);
+}
+
+double
+sub2 (double f, double g, double h)
+{
+  return -((f * g) + h);
+}
+
+float
+sub3 (float f, float g, float h)
+{
+  return -((f * g) - h);
+}
+
+double
+sub4 (double f, double g, double h)
+{
+  return -((f * g) - h);
+}

gcc/testsuite/gcc.dg/mips-nmadd-2.c

+/* { dg-do compile { target "mips*-*-*" } } */
+/* { dg-options "-O2 -mips4" } */
+/* { dg-final { scan-assembler "nmadd.s" } } */
+/* { dg-final { scan-assembler "nmadd.d" } } */
+/* { dg-final { scan-assembler "nmsub.s" } } */
+/* { dg-final { scan-assembler "nmsub.d" } } */
+
+float
+sub1 (float f, float g, float h)
+{
+  return -((f * g) + h);
+}
+
+double
+sub2 (double f, double g, double h)
+{
+  return -((f * g) + h);
+}
+
+float
+sub3 (float f, float g, float h)
+{
+  return -((f * g) - h);
+}
+
+double
+sub4 (double f, double g, double h)
+{
+  return -((f * g) - h);
+}