sse.md (<avx512>_fmadd_<mode>_mask3<round_name>): Use v constraint instead of x.

	* config/i386/sse.md (<avx512>_fmadd_<mode>_mask3<round_name>): Use
	v constraint instead of x.

	* gcc.target/i386/avx512f-vfmadd-1.c: New test.

From-SVN: r235921

gcc/ChangeLog

+2016-05-05  Jakub Jelinek  <jakub@redhat.com>
+
+	* config/i386/sse.md (<avx512>_fmadd_<mode>_mask3<round_name>): Use
+	v constraint instead of x.
+
 2016-05-05  Alan Modra  <amodra@gmail.com>
 
 	PR target/68662

gcc/config/i386/sse.md

@@ -3327,10 +3327,10 @@
    (set_attr "mode" "<MODE>")])
 
 (define_insn "<avx512>_fmadd_<mode>_mask3<round_name>"
-  [(set (match_operand:VF_AVX512VL 0 "register_operand" "=x")
+  [(set (match_operand:VF_AVX512VL 0 "register_operand" "=v")
 	(vec_merge:VF_AVX512VL
 	  (fma:VF_AVX512VL
-	    (match_operand:VF_AVX512VL 1 "register_operand" "x")
+	    (match_operand:VF_AVX512VL 1 "register_operand" "v")
 	    (match_operand:VF_AVX512VL 2 "nonimmediate_operand" "<round_constraint>")
 	    (match_operand:VF_AVX512VL 3 "register_operand" "0"))
 	  (match_dup 3)

gcc/testsuite/ChangeLog

 2016-05-05  Jakub Jelinek  <jakub@redhat.com>
 
+	* gcc.target/i386/avx512f-vfmadd-1.c: New test.
+
 	* c-c++-common/Wdangling-else-4.c: New test.
 
 2016-05-04  Jakub Jelinek  <jakub@redhat.com>

gcc/testsuite/gcc.target/i386/avx512f-vfmadd-1.c

+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-O2 -mavx512f" } */
+
+#include <x86intrin.h>
+
+void
+f1 (__m512d x, __m512d y, __m512d z, __mmask8 m)
+{
+  register __m512d a __asm ("xmm16"), b __asm ("xmm17"), c __asm ("xmm18");
+  a = x; b = y; c = z;
+  asm volatile ("" : "+v" (a), "+v" (b), "+v" (c));
+  a = _mm512_mask3_fmadd_round_pd (c, b, a, m, _MM_FROUND_TO_NEG_INF | _MM_FROUND_NO_EXC);
+  asm volatile ("" : "+v" (a));
+}
+
+void
+f2 (__m512 x, __m512 y, __m512 z, __mmask8 m)
+{
+  register __m512 a __asm ("xmm16"), b __asm ("xmm17"), c __asm ("xmm18");
+  a = x; b = y; c = z;
+  asm volatile ("" : "+v" (a), "+v" (b), "+v" (c));
+  a = _mm512_mask3_fmadd_round_ps (c, b, a, m, _MM_FROUND_TO_NEG_INF | _MM_FROUND_NO_EXC);
+  asm volatile ("" : "+v" (a));
+}
+
+/* { dg-final { scan-assembler "vfmadd231pd\[^\n\r\]*zmm16" } } */
+/* { dg-final { scan-assembler "vfmadd231ps\[^\n\r\]*zmm16" } } */