[ARM][4/4] Adjust gcc.target/arm/wmul-[123].c tests

	PR target/65932
	PR target/67714
	* gcc.target/arm/wmul-3.c: Simplify test to generate just
	a single smulbb instruction.
	* gcc.target/amr/wmul-1.c: Add -mtune=cortex-a9 to dg-options.
	* gcc.target/amr/wmul-2.c: Likewise.

From-SVN: r233134

gcc/testsuite/ChangeLog

@@ -2,6 +2,15 @@
 
 	PR target/65932
 	PR target/67714
+	* gcc.target/arm/wmul-3.c: Simplify test to generate just
+	a single smulbb instruction.
+	* gcc.target/amr/wmul-1.c: Add -mtune=cortex-a9 to dg-options.
+	* gcc.target/amr/wmul-2.c: Likewise.
+
+2016-02-04  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/65932
+	PR target/67714
 	* gcc.c-torture/execute/pr67714.c: New test.
 
 2016-02-04  Ilya Enkovich  <enkovich.gnu@gmail.com>

gcc/testsuite/gcc.target/arm/wmul-1.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_dsp } */
-/* { dg-options "-O1 -fexpensive-optimizations" } */
+/* { dg-options "-O1 -fexpensive-optimizations -mtune=cortex-a9" } */
 
 int mac(const short *a, const short *b, int sqr, int *sum)
 {

gcc/testsuite/gcc.target/arm/wmul-2.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_dsp } */
-/* { dg-options "-O1 -fexpensive-optimizations" } */
+/* { dg-options "-O1 -fexpensive-optimizations -mtune=cortex-a9" } */
 
 void vec_mpy(int y[], const short x[], short scaler)
 {

gcc/testsuite/gcc.target/arm/wmul-3.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_dsp } */
-/* { dg-options "-O1 -fexpensive-optimizations" } */
+/* { dg-options "-O" } */
 
-int mac(const short *a, const short *b, int sqr, int *sum)
+int
+foo (int a, int b)
 {
-  int i;
-  int dotp = *sum;
-
-  for (i = 0; i < 150; i++) {
-    dotp -= b[i] * a[i];
-    sqr -= b[i] * b[i];
-  }
-
-  *sum = dotp;
-  return sqr;
+  return (short) a * (short) b;
 }
 
-/* { dg-final { scan-assembler-times "smulbb" 2 } } */
+/* { dg-final { scan-assembler-times "smulbb" 1 } } */