* config/i386/i386.md (*truncdfsf_mixed, *truncdfsf_i387,

	*truncxfsf2_mixed, *truncxfdf2_mixed): Use v constraint instead
	of x.

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

From-SVN: r235819

gcc/ChangeLog

+2016-05-03  Jakub Jelinek  <jakub@redhat.com>
+
+	* config/i386/i386.md (*truncdfsf_mixed, *truncdfsf_i387,
+	*truncxfsf2_mixed, *truncxfdf2_mixed): Use v constraint instead
+	of x.
+
 2016-05-03  Richard Biener  <rguenther@suse.de>
 
 	* gimplify.h (get_initialized_tmp_var): Add allow_ssa parameter

gcc/config/i386/i386.md

@@ -4487,9 +4487,9 @@
    (set_attr "mode" "SF")])
 
 (define_insn "*truncdfsf_mixed"
-  [(set (match_operand:SF 0 "nonimmediate_operand"   "=m,x ,?f,?x,?*r")
+  [(set (match_operand:SF 0 "nonimmediate_operand"   "=m,v ,?f,?v,?*r")
 	(float_truncate:SF
-	  (match_operand:DF 1 "nonimmediate_operand" "f ,xm,f ,f ,f")))
+	  (match_operand:DF 1 "nonimmediate_operand" "f ,vm,f ,f ,f")))
    (clobber (match_operand:SF 2 "memory_operand"     "=X,X ,m ,m ,m"))]
   "TARGET_MIX_SSE_I387"
 {
@@ -4511,7 +4511,7 @@
    (set_attr "mode" "SF")])
 
 (define_insn "*truncdfsf_i387"
-  [(set (match_operand:SF 0 "nonimmediate_operand"   "=m,?f,?x,?*r")
+  [(set (match_operand:SF 0 "nonimmediate_operand"   "=m,?f,?v,?*r")
 	(float_truncate:SF
 	  (match_operand:DF 1 "nonimmediate_operand" "f ,f ,f ,f")))
    (clobber (match_operand:SF 2 "memory_operand"     "=X,m ,m ,m"))]
@@ -4573,7 +4573,7 @@
 })
 
 (define_insn "*truncxfsf2_mixed"
-  [(set (match_operand:SF 0 "nonimmediate_operand" "=m,?f,?x,?*r")
+  [(set (match_operand:SF 0 "nonimmediate_operand" "=m,?f,?v,?*r")
 	(float_truncate:SF
 	  (match_operand:XF 1 "register_operand"   "f ,f ,f ,f")))
    (clobber (match_operand:SF 2 "memory_operand"   "=X,m ,m ,m"))]
@@ -4587,7 +4587,7 @@
    (set_attr "mode" "SF")])
 
 (define_insn "*truncxfdf2_mixed"
-  [(set (match_operand:DF 0 "nonimmediate_operand" "=m,?f,?x,?*r")
+  [(set (match_operand:DF 0 "nonimmediate_operand" "=m,?f,?v,?*r")
 	(float_truncate:DF
 	  (match_operand:XF 1 "register_operand"   "f ,f ,f  ,f")))
    (clobber (match_operand:DF 2 "memory_operand"   "=X,m ,m  ,m"))]

gcc/testsuite/ChangeLog

+2016-05-03  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.target/i386/avx512f-cvt-1.c: New test.
+
 2016-05-03  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* gcc.dg/tree-ssa/ssa-thread-14.c: Replace -fdump-tree-vrp with

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

+/* { dg-do assemble { target { avx512f && { ! ia32 } } } } */
+/* { dg-options "-O2 -mavx512f -mfpmath=387,sse" } */
+
+void
+f1 (double *p)
+{
+  register float x __asm ("xmm16");
+  x = *p;
+  __asm volatile ("" : "+v" (x));
+}
+
+void
+f2 (void)
+{
+  double d;
+  register float x __asm ("xmm16");
+  __asm volatile ("" : "=t" (d));
+  x = d;
+  __asm volatile ("" : "+v" (x));
+}
+
+void
+f3 (long double *p)
+{
+  register float x __asm ("xmm16");
+  x = *p;
+  __asm volatile ("" : "+v" (x));
+}
+
+void
+f4 (void)
+{
+  long double d;
+  register float x __asm ("xmm16");
+  __asm volatile ("" : "=t" (d));
+  x = d;
+  __asm volatile ("" : "+v" (x));
+}