re PR target/79807 (ICE in extract_insn, at recog.c:2311 (error: unrecognizable insn))

	PR target/79807
	* config/i386/i386.c (ix86_expand_multi_arg_builtin): If target
	is a memory operand, increase num_memory.
	(ix86_expand_args_builtin): Likewise.

	* gcc.target/i386/pr79807.c: New test.

From-SVN: r245871

gcc/ChangeLog

+2017-03-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/79807
+	* config/i386/i386.c (ix86_expand_multi_arg_builtin): If target
+	is a memory operand, increase num_memory.
+	(ix86_expand_args_builtin): Likewise.
+
 2017-03-03  Jan Hubicka  <jh@suse.cz>
 
 	PR lto/79760

gcc/config/i386/i386.c

@@ -34249,6 +34249,8 @@ ix86_expand_multi_arg_builtin (enum insn_code icode, tree exp, rtx target,
       || GET_MODE (target) != tmode
       || !insn_data[icode].operand[0].predicate (target, tmode))
     target = gen_reg_rtx (tmode);
+  else if (memory_operand (target, tmode))
+    num_memory++;
 
   gcc_assert (nargs <= 4);
 
@@ -35534,6 +35536,8 @@ ix86_expand_args_builtin (const struct builtin_description *d,
 	  || GET_MODE (target) != tmode
 	  || !insn_p->operand[0].predicate (target, tmode))
 	target = gen_reg_rtx (tmode);
+      else if (memory_operand (target, tmode))
+	num_memory++;
       real_target = target;
     }
   else

gcc/testsuite/ChangeLog

+2017-03-03  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/79807
+	* gcc.target/i386/pr79807.c: New test.
+
 2017-03-03  Martin Liska  <mliska@suse.cz>
 
 	PR tree-optimization/79803

gcc/testsuite/gcc.target/i386/pr79807.c

+/* PR target/79807 */
+/* { dg-do compile } */
+/* { dg-options "-O0 -mavx -ffloat-store" } */
+
+typedef double __v2df __attribute__ ((__vector_size__ (16)));
+typedef double __v4df __attribute__ ((__vector_size__ (32)));
+
+__v2df
+foo (__v4df x)
+{
+  return __builtin_ia32_pd_pd256 (x);
+}