s390.h (EXTRA_CC_MODES): Add CCLmode.

* config/s390/s390.h (EXTRA_CC_MODES): Add CCLmode.
(SELECT_CC_MODE): Use s390_select_ccmode.
* config/s390/s390-protos.h (s390_select_ccmode): Add.
* config/s390/s390.c (s390_select_ccmode): New.
(s390_match_ccmode): Add CCLmode.
(s390_branch_condition_mask, s390_branch_condition_mnemonic): New.
(output_branch_condition, output_inverse_branch_condition): Removed.
(print_operand): Use s390_branch_condition_mnemonic.
* config/s390/s390.md (addsi3_cc, addsi3_cconly, addsi3_cconly2,
subsi3_cc, subsi3_cconly): Use logical instructions and CCLmode.
(bunordered, bordered, buneq, bungt, bunlt, bnuge, bunle, bltgt): New.

* config/s390/s390.c (check_and_change_labels): Preserve CC mode
when converting conditional branches to far branches.
* config/s390/s390.md (cmpstr_const, cmpstr_64, cmpstr_31, cmpint_si,
cmpint_di): Use CCSmode instead of CCUmode.

* config/s390/s390.c (legitimate_la_operand_p): New.
* config/s390/s390-protos.h (legitimate_la_operand_p): Add.
* config/s390/s390.md (movsi): Convert load address patterns to
arithmetic operations when necessary.
(addaddr_picR, addaddr_picL, addaddr_picN): Removed.
(do_la): Renamed to *do_la and use legitimate_la_operand_p.
(*do_la_reg_0): Don't use before reload.

* config/s390/s390.c (legitimize_address): Make more efficient
use of two-register addressing mode.

* config/s390/s390.c (s390_function_prologue): Fix incorrect prolog
with -mno-backchain in some corner cases.

* config/s390/s390.md (cmpsi_cct): Operands 0 and 1 do not commute.

From-SVN: r45891

gcc/ChangeLog

+2001-09-30  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* config/s390/s390.h (EXTRA_CC_MODES): Add CCLmode.
+	(SELECT_CC_MODE): Use s390_select_ccmode.
+	* config/s390/s390-protos.h (s390_select_ccmode): Add.
+	* config/s390/s390.c (s390_select_ccmode): New.
+	(s390_match_ccmode): Add CCLmode.
+	(s390_branch_condition_mask, s390_branch_condition_mnemonic): New.
+	(output_branch_condition, output_inverse_branch_condition): Removed.
+	(print_operand): Use s390_branch_condition_mnemonic.
+	* config/s390/s390.md (addsi3_cc, addsi3_cconly, addsi3_cconly2,
+	subsi3_cc, subsi3_cconly): Use logical instructions and CCLmode.
+	(bunordered, bordered, buneq, bungt, bunlt, bnuge, bunle, bltgt): New.
+
+	* config/s390/s390.c (check_and_change_labels): Preserve CC mode
+	when converting conditional branches to far branches.
+	* config/s390/s390.md (cmpstr_const, cmpstr_64, cmpstr_31, cmpint_si,
+	cmpint_di): Use CCSmode instead of CCUmode.
+
+	* config/s390/s390.c (legitimate_la_operand_p): New.
+	* config/s390/s390-protos.h (legitimate_la_operand_p): Add.
+	* config/s390/s390.md (movsi): Convert load address patterns to
+	arithmetic operations when necessary.
+	(addaddr_picR, addaddr_picL, addaddr_picN): Removed.
+	(do_la): Renamed to *do_la and use legitimate_la_operand_p.
+	(*do_la_reg_0): Don't use before reload.
+
+	* config/s390/s390.c (legitimize_address): Make more efficient
+	use of two-register addressing mode.
+
+	* config/s390/s390.c (s390_function_prologue): Fix incorrect prolog
+	with -mno-backchain in some corner cases.
+
+	* config/s390/s390.md (cmpsi_cct): Operands 0 and 1 do not commute.
+
 2001-09-29  Alexandre Oliva  <aoliva@redhat.com>
 
 	* reload.c (find_reloads): Mark new USE insns with QImode.

gcc/config/s390/s390-protos.h

@@ -42,7 +42,9 @@ extern int load_multiple_operation PARAMS ((rtx, enum machine_mode));
 extern int store_multiple_operation PARAMS ((rtx, enum machine_mode));
 
 extern int s390_match_ccmode PARAMS ((rtx, enum machine_mode));
+extern enum machine_mode s390_select_ccmode PARAMS ((enum rtx_code, rtx, rtx));
 extern int symbolic_reference_mentioned_p PARAMS ((rtx));
+extern int legitimate_la_operand_p PARAMS ((rtx));
 extern int legitimate_pic_operand_p PARAMS ((rtx));
 extern int legitimate_constant_p PARAMS ((rtx));
 extern int legitimate_address_p PARAMS ((enum machine_mode, rtx, int));

gcc/config/s390/s390.h

@@ -1687,6 +1687,7 @@ do {                                                                       \
 #define EXTRA_CC_MODES \
 	CC (CCZmode, "CCZ") \
 	CC (CCAmode, "CCA") \
+	CC (CCLmode, "CCL") \
 	CC (CCUmode, "CCU") \
 	CC (CCSmode, "CCS") \
 	CC (CCTmode, "CCT")
@@ -1694,13 +1695,7 @@ do {                                                                       \
 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
    return the mode to be used for the comparison. */
  
-#define SELECT_CC_MODE(OP, X, Y)            \
- (   (OP) == EQ  || (OP) == NE  ? CCZmode   \
-   : (OP) == LE  || (OP) == LT  ||          \
-     (OP) == GE  || (OP) == GT  ? CCSmode   \
-   : (OP) == LEU || (OP) == LTU ||          \
-     (OP) == GEU || (OP) == GTU ? CCUmode   \
-   : CCmode )
+#define SELECT_CC_MODE(OP, X, Y) s390_select_ccmode ((OP), (X), (Y))
  
  
 /* Define the information needed to generate branch and scc insns.  This is