cris.c (cris_notice_update_cc): Check first destination also against overlap…

cris.c (cris_notice_update_cc): Check first destination also against overlap with cc_status.value2 and second...

	* config/cris/cris.c (cris_notice_update_cc): Check first
	destination also against overlap with cc_status.value2 and second
	destination against overlap with cc_status.value1.  For overlaps,
	clear overlapped value, don't just CC_STATUS_INIT.

	* config/cris/cris.h (EXTRA_CONSTRAINT_T): Fix spacing and FIXME.
	(LINK_SPEC): Remove whitespace at end of line.

From-SVN: r47463

gcc/ChangeLog

+2001-11-30  Hans-Peter Nilsson  <hp@axis.com>
+
+	* config/cris/cris.c (cris_notice_update_cc): Check first
+	destination also against overlap with cc_status.value2 and second
+	destination against overlap with cc_status.value1.  For overlaps,
+	clear overlapped value, don't just CC_STATUS_INIT.
+
+	* config/cris/cris.h (EXTRA_CONSTRAINT_T): Fix spacing and FIXME.
+	(LINK_SPEC): Remove whitespace at end of line.
+	
 2001-11-29  Jakub Jelinek  <jakub@redhat.com>
 
 	* c-lex.c (init_c_lex): Canonicalize "-" filename to "".

gcc/config/cris/cris.c

@@ -1953,17 +1953,34 @@ cris_notice_update_cc (exp, insn)
 		{
 		  /* For "move.S rz,[rx=ry+o]" and "clear.S [rx=ry+o]",
 		     say flags are not changed, except for overlap.  */
-		  if ((cc_status.value1
+		  if (cc_status.value1
 		      && cris_reg_overlap_mentioned_p (XEXP
 						       (XVECEXP
 							(exp, 0, 0), 0),
 						       cc_status.value1))
-		      || (cc_status.value2
+		    cc_status.value1 = 0;
+
+		  if (cc_status.value1
 		      && cris_reg_overlap_mentioned_p (XEXP
 						       (XVECEXP
 							(exp, 0, 1), 0),
-							   cc_status.value2)))
-		    CC_STATUS_INIT;
+						       cc_status.value1))
+		    cc_status.value1 = 0;
+
+		  if (cc_status.value2
+		      && cris_reg_overlap_mentioned_p (XEXP
+						       (XVECEXP
+							(exp, 0, 0), 0),
+						       cc_status.value2))
+		    cc_status.value2 = 0;
+
+		  if (cc_status.value2
+		      && cris_reg_overlap_mentioned_p (XEXP
+						       (XVECEXP
+							(exp, 0, 1), 0),
+						       cc_status.value2))
+		    cc_status.value2 = 0;
+
 		  return;
 		}
 	    }

gcc/config/cris/cris.h

@@ -775,12 +775,9 @@ enum reg_class {NO_REGS, ALL_REGS, LIM_REG_CLASSES};
   || CONSTANT_INDEX_P (X)					\
  )
 
-/* FIXME: Bug below: We can't have XEXP (X, 0)) both be MEM and a
-   CONSTANT_P.  Parens don't match indentation.  */
-
 #define EXTRA_CONSTRAINT_T(X)						\
  (									\
-  /* Three-address-operands.  All are indirect-memory:  */		\
+  /* Memory three-address operand.  All are indirect-memory:  */	\
   GET_CODE (X) == MEM							\
   && ((GET_CODE (XEXP (X, 0)) == MEM					\
        /* Double indirect: [[reg]] or [[reg+]]?  */			\