[AArch64] PR target/70809: Delete aarch64_vmls<mode> pattern

	PR target/70809
	* config/aarch64/aarch64-simd.md (aarch64_vmls<mode>): Delete.

	* gcc.target/aarch64/pr70809_1.c: New test.

From-SVN: r236318

gcc/ChangeLog

+2016-05-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR target/70809
+	* config/aarch64/aarch64-simd.md (aarch64_vmls<mode>): Delete.
+
 2016-05-17  James Greenhalgh  <james.greenhalgh@arm.com>
 
 	* config/aarch64/aarch64-elf.h (ASM_OUTPUT_DEF): Delete.

gcc/config/aarch64/aarch64-simd.md

@@ -1919,16 +1919,6 @@
   }
 )
 
-(define_insn "aarch64_vmls<mode>"
-  [(set (match_operand:VDQF 0 "register_operand" "=w")
-       (minus:VDQF (match_operand:VDQF 1 "register_operand" "0")
-		   (mult:VDQF (match_operand:VDQF 2 "register_operand" "w")
-			      (match_operand:VDQF 3 "register_operand" "w"))))]
-  "TARGET_SIMD"
- "fmls\\t%0.<Vtype>, %2.<Vtype>, %3.<Vtype>"
-  [(set_attr "type" "neon_fp_mla_<Vetype>_scalar<q>")]
-)
-
 ;; FP Max/Min
 ;; Max/Min are introduced by idiom recognition by GCC's mid-end.  An
 ;; expression like:

gcc/testsuite/ChangeLog

 2016-05-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
+	PR target/70809
+	* gcc.target/aarch64/pr70809_1.c: New test.
+
+2016-05-17  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
 	* gcc.target/aarch64/cpu-diagnostics-1.c: Skip if -mcpu is overriden.
 	* gcc.target/aarch64/cpu-diagnostics-2.c: Likewise.
 	* gcc.target/aarch64/cpu-diagnostics-3.c: Likewise.

gcc/testsuite/gcc.target/aarch64/pr70809_1.c

+/* PR target/70809.  */
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-vectorize -ffp-contract=off -mtune=xgene1" } */
+
+/* Check that vector FMLS is not generated when contraction is disabled.  */
+
+void
+foo (float *__restrict__ __attribute__ ((aligned (16))) a,
+     float *__restrict__ __attribute__ ((aligned (16))) x,
+     float *__restrict__ __attribute__ ((aligned (16))) y,
+     float *__restrict__ __attribute__ ((aligned (16))) z)
+{
+  unsigned i = 0;
+  for (i = 0; i < 256; i++)
+    a[i] = x[i] - (y[i] * z[i]);
+}
+
+/* { dg-final { scan-assembler-not "fmls\tv.*" } } */