i386.c (ix86_cc_modes_compatible): Declare CCZmode compatible with CCGOCmode and CCGCmode.

	* config/i386/i386.c (ix86_cc_modes_compatible): Declare CCZmode
	compatible with CCGOCmode and CCGCmode.

From-SVN: r184813

gcc/ChangeLog

+2012-03-02  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386.c (ix86_cc_modes_compatible): Declare CCZmode
+	compatible with CCGOCmode and CCGCmode.
+
 2012-03-02  Peter Bergner  <bergner@vnet.ibm.com>
 
 	* config/rs6000/vsx.md (vsx_set_<mode>): Reorder operands.

gcc/config/i386/i386.c

@@ -17827,6 +17827,11 @@ ix86_cc_modes_compatible (enum machine_mode m1, enum machine_mode m2)
       || (m1 == CCGOCmode && m2 == CCGCmode))
     return CCGCmode;
 
+  if (m1 == CCZmode && (m2 == CCGCmode || m2 == CCGOCmode))
+    return m2;
+  else if (m2 == CCZmode && (m1 == CCGCmode || m1 == CCGOCmode))
+    return m1;
+
   switch (m1)
     {
     default:

gcc/testsuite/ChangeLog

@@ -9,7 +9,7 @@
 2012-03-02  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/46716
-	* gcc.target/i386/pr46176.c: New test.
+	* gcc.target/i386/pr46716.c: New test.
 
 2012-03-02  Paolo Carlini  <paolo.carlini@oracle.com>