re PR target/92744 (error: insn does not satisfy its constraints since r278439)

	PR target/92744
	* config/i386/i386.md (peephole2 for *swap<mode>): Use
	general_reg_operand predicates instead of register_operand.

	* g++.dg/dfp/pr92744.C: New test.

From-SVN: r278924

gcc/ChangeLog

+2019-12-03  Uroš Bizjak  <ubizjak@gmail.com>
+	    Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/92744
+	* config/i386/i386.md (peephole2 for *swap<mode>): Use
+	general_reg_operand predicates instead of register_operand.
+
 2019-12-03  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/92645

gcc/config/i386/i386.md

@@ -2788,10 +2788,10 @@
    (set_attr "bdver1_decode" "double")])
 
 (define_peephole2
-  [(set (match_operand:SWI 0 "register_operand")
-	(match_operand:SWI 1 "register_operand"))
+  [(set (match_operand:SWI 0 "general_reg_operand")
+	(match_operand:SWI 1 "general_reg_operand"))
    (set (match_dup 1)
-	(match_operand:SWI 2 "register_operand"))
+	(match_operand:SWI 2 "general_reg_operand"))
    (set (match_dup 2) (match_dup 0))]
   "peep2_reg_dead_p (3, operands[0])
    && optimize_insn_for_size_p ()"

gcc/testsuite/ChangeLog

 2019-12-03  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/92744
+	* g++.dg/dfp/pr92744.C: New test.
+
 	PR c++/92732
 	* g++.dg/cpp2a/bitfield3.C: Don't expect narrowing conversion
 	warnings.

gcc/testsuite/g++.dg/dfp/pr92744.C

+// PR target/92744
+// { dg-do compile }
+// { dg-options "-Os -fno-tree-ccp" }
+
+typedef float T __attribute__((mode(SD)));
+struct A { T a; };
+void foo ();
+
+bool
+operator!= (A x, A y)
+{
+  return x.a != y.a;
+}
+
+void
+bar (A x, A y)
+{
+  if (x != y)
+    foo ();
+}