[AArch64] Support scalar FABD

gcc/ChangeLog

2013-05-02  Vidya Praveen  <vidyapraveen@arm.com>

        * config/aarch64/aarch64-simd.md (*fabd_scalar<mode>3): Support
          scalar form of FABD instruction.

gcc/testsuite/ChangeLog

2013-05-02  Vidya Praveen <vidyapraveen@arm.com>

        * gcc.target/aarch64/fabd.c: New file.

From-SVN: r198574

gcc/ChangeLog

+2013-05-03  Vidya Praveen  <vidyapraveen@arm.com>
+
+	* config/aarch64/aarch64-simd.md (*fabd_scalar<mode>3): Support
+	scalar form of FABD instruction.
+
 2013-05-02  Vladimir Makarov  <vmakarov@redhat.com>
 
 	* lra-constraints.c (process_alt_operands): Add checking alt

gcc/config/aarch64/aarch64-simd.md

@@ -556,6 +556,17 @@
    (set_attr "simd_mode" "<MODE>")]
 )
 
+(define_insn "*fabd_scalar<mode>3"
+  [(set (match_operand:GPF 0 "register_operand" "=w")
+        (abs:GPF (minus:GPF
+                 (match_operand:GPF 1 "register_operand" "w")
+                 (match_operand:GPF 2 "register_operand" "w"))))]
+  "TARGET_SIMD"
+  "fabd\t%<s>0, %<s>1, %<s>2"
+  [(set_attr "simd_type" "simd_fabd")
+   (set_attr "mode" "<MODE>")]
+)
+
 (define_insn "and<mode>3"
   [(set (match_operand:VDQ 0 "register_operand" "=w")
         (and:VDQ (match_operand:VDQ 1 "register_operand" "w")

gcc/testsuite/ChangeLog

+2013-05-03  Vidya Praveen <vidyapraveen@arm.com>
+
+	* gcc.target/aarch64/fabd.c: New file.
+
 2013-05-03  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/54318

gcc/testsuite/gcc.target/aarch64/fabd.c

+/* { dg-do run } */
+/* { dg-options "-O1 -fno-inline --save-temps" } */
+
+extern double fabs (double);
+extern float fabsf (float);
+extern void abort ();
+extern void exit (int);
+
+void
+fabd_d (double x, double y, double d)
+{
+  if ((fabs (x - y) - d) > 0.00001)
+    abort ();
+}
+
+/* { dg-final { scan-assembler "fabd\td\[0-9\]+" } } */
+
+void
+fabd_f (float x, float y, float d)
+{
+  if ((fabsf (x - y) - d) > 0.00001)
+    abort ();
+}
+
+/* { dg-final { scan-assembler "fabd\ts\[0-9\]+" } } */
+
+int
+main ()
+{
+  fabd_d (10.0, 5.0, 5.0);
+  fabd_d (5.0, 10.0, 5.0);
+  fabd_f (10.0, 5.0, 5.0);
+  fabd_f (5.0, 10.0, 5.0);
+
+  return 0;
+}
+
+/* { dg-final { cleanup-saved-temps } } */