2018-03-12  Jakub Jelinek  <jakub@redhat.com>

	PR target/84786
	* config/i386/sse.md (sse2_loadhpd): Use Yv constraint rather than v
	on the last operand.

	* gcc.target/i386/avx512f-pr84786-1.c: New test.
	* gcc.target/i386/avx512f-pr84786-2.c: New test.

--- gcc/config/i386/sse.md.jj	2018-03-05 17:00:24.568655800 +0100
+++ gcc/config/i386/sse.md	2018-03-12 11:05:48.917401886 +0100
@@ -9022,14 +9022,14 @@ (define_expand "sse2_loadhpd_exp"
 ;; see comment above inline_secondary_memory_needed function in i386.c
 (define_insn "sse2_loadhpd"
   [(set (match_operand:V2DF 0 "nonimmediate_operand"
-	  "=x,v,x,v,o,o ,o")
+	  "=x,v,x,v ,o,o ,o")
 	(vec_concat:V2DF
 	  (vec_select:DF
 	    (match_operand:V2DF 1 "nonimmediate_operand"
-	  " 0,v,0,v,0,0 ,0")
+	  " 0,v,0,v ,0,0 ,0")
 	    (parallel [(const_int 0)]))
 	  (match_operand:DF 2 "nonimmediate_operand"
-	  " m,m,x,v,x,*f,r")))]
+	  " m,m,x,Yv,x,*f,r")))]
   "TARGET_SSE2 && !(MEM_P (operands[1]) && MEM_P (operands[2]))"
   "@
    movhpd\t{%2, %0|%0, %2}
--- gcc/testsuite/gcc.target/i386/avx512f-pr84786-1.c.jj	2018-03-12 11:32:33.563665173 +0100
+++ gcc/testsuite/gcc.target/i386/avx512f-pr84786-1.c	2018-03-12 11:35:33.964695384 +0100
@@ -0,0 +1,25 @@
+/* PR target/84786 */
+/* { dg-do run { target { ! ia32 } } } */
+/* { dg-options "-mavx512f -mno-avx512vl -O2" } */
+/* { dg-require-effective-target avx512f } */
+
+#include "avx512f-check.h"
+
+typedef double V __attribute__((vector_size (16)));
+
+__attribute__((noipa)) V
+foo (V x, double y)
+{
+  register double z __asm ("xmm18");
+  asm volatile ("" : "=v" (z) : "0" (y));
+  x[1] = z;
+  return x;
+}
+
+static void
+avx512f_test (void)
+{
+  V a = foo ((V) { 1.0, 2.0 }, 3.0);
+  if (a[0] != 1.0 || a[1] != 3.0)
+    abort ();
+}
--- gcc/testsuite/gcc.target/i386/avx512f-pr84786-2.c.jj	2018-03-12 11:32:43.445666826 +0100
+++ gcc/testsuite/gcc.target/i386/avx512f-pr84786-2.c	2018-03-12 11:35:45.260697279 +0100
@@ -0,0 +1,16 @@
+/* PR target/84786 */
+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-mavx512f -mno-avx512vl -O2" } */
+
+typedef double V __attribute__((vector_size (16)));
+
+__attribute__((noipa)) V
+foo (V x, double y)
+{
+  register double z __asm ("xmm18");
+  asm volatile ("" : "=v" (z) : "0" (y));
+  x[1] = z;
+  return x;
+}
+
+/* { dg-final { scan-assembler-not "vunpcklpd\[\^\n\r]*xmm(1\[6-9]|\[23]\[0-9])" } } */