jump.c: (optimize_jump): Don't use the return register as a source1 of a conditional move.

        * jump.c: (optimize_jump): Don't use the return register as a
        source1 of a conditional move.

From-SVN: r17123

gcc/ChangeLog

+Wed Dec 17 00:51:36 1997  Stan Cox (scox@cygnus.com)
+
+	* jump.c: (optimize_jump): Don't use the return register as a 
+	source1 of a conditional move.
+
 Tue Dec 16 23:45:40 1997  Richard Henderson  <rth@cygnus.com>
 
 	* sparc.c (DF_MODES): Or the mask not the bit number.

gcc/jump.c

@@ -1198,6 +1198,10 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan)
 		rtx cond0, cond1, aval, bval;
 		rtx target;
 
+		if (SMALL_REGISTER_CLASSES
+		    && FUNCTION_VALUE_REGNO_P (REGNO (temp3)))
+		  temp3 = temp1;
+
 		/* Copy the compared variables into cond0 and cond1, so that
 		   any side effects performed in or after the old comparison,
 		   will not affect our compare which will come later.  */