[PATCH]: New option -minmax for HC12

[PATCH]: New option -minmax for HC12

[Stephane Carrez]

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Hi!

This patch adds a -minmax and -mnominmax option to HC12 to enable or
not the use of the min and max instructions.

Committed on mainline.

	Stephane

2002-08-14  Stephane Carrez  <stcarrez@nerim.fr>

	* doc/invoke.texi: Document -minmax for 68HC12.

	* config/m68hc11/m68hc11.md ("umaxqi3"): Use TARGET_MIN_MAX.
	("uminqi3"): Likewise.
	("uminhi3", "umaxhi3"): Likewise.

	* config/m68hc11/m68hc11.h (MASK_MIN_MAX): Define.
	(TARGET_MIN_MAX): Define.
	(TARGET_SWITCHES): New option -minmax/-mnominmax.


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Index: doc/invoke.texi
===================================================================
RCS file: /cvs/gcc/gcc/gcc/doc/invoke.texi,v
retrieving revision 1.171
diff -u -p -r1.171 invoke.texi
--- doc/invoke.texi	14 Aug 2002 07:14:03 -0000	1.171
+++ doc/invoke.texi	14 Aug 2002 07:47:35 -0000
@@ -338,7 +338,7 @@ in the following sections.
 @emph{M68hc1x Options}
 @gccoptlist{
 -m6811  -m6812  -m68hc11  -m68hc12 @gol
--mauto-incdec  -mlong-calls  -mshort  -msoft-reg-count=@var{count}}
+-mauto-incdec  -minmax  -mlong-calls  -mshort  -msoft-reg-count=@var{count}}
 
 @emph{VAX Options}
 @gccoptlist{
@@ -5170,6 +5170,12 @@ when the compiler is configured for 68HC
 @opindex mauto-incdec
 Enable the use of 68HC12 pre and post auto-increment and auto-decrement
 addressing modes.
+
+@item -minmax
+@itemx -nominmax
+@opindex minmax
+@opindex mnominmax
+Enable the use of 68HC12 min and max instructions.
 
 @item -mlong-calls
 @itemx -mno-long-calls
Index: config/m68hc11/m68hc11.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/m68hc11/m68hc11.c,v
retrieving revision 1.52
diff -u -p -r1.52 m68hc11.c
--- config/m68hc11/m68hc11.c	14 Aug 2002 07:14:03 -0000	1.52
+++ config/m68hc11/m68hc11.c	14 Aug 2002 07:47:37 -0000
@@ -253,7 +253,7 @@ m68hc11_override_options ()
         target_flags &= ~TARGET_DEFAULT;
 
       if (!TARGET_M6812)
-        target_flags &= ~TARGET_AUTO_INC_DEC;
+        target_flags &= ~(TARGET_AUTO_INC_DEC | TARGET_MIN_MAX);
       m68hc11_cost = &m6811_cost;
       m68hc11_min_offset = 0;
       m68hc11_max_offset = 256;
@@ -284,7 +284,7 @@ m68hc11_override_options ()
       m68hc11_sp_correction = 0;
       m68hc11_tmp_regs_class = TMP_REGS;
       target_flags &= ~MASK_M6811;
-      target_flags |= MASK_NO_DIRECT_MODE;
+      target_flags |= MASK_NO_DIRECT_MODE | MASK_MIN_MAX;
       if (m68hc11_soft_reg_count == 0)
 	m68hc11_soft_reg_count = "0";
 
Index: config/m68hc11/m68hc11.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/m68hc11/m68hc11.h,v
retrieving revision 1.51
diff -u -p -r1.51 m68hc11.h
--- config/m68hc11/m68hc11.h	14 Aug 2002 07:14:03 -0000	1.51
+++ config/m68hc11/m68hc11.h	14 Aug 2002 07:47:39 -0000
@@ -120,6 +120,7 @@ extern short *reg_renumber;	/* def in lo
 #define MASK_M6811              0010
 #define MASK_M6812              0020
 #define MASK_NO_DIRECT_MODE     0040
+#define MASK_MIN_MAX            0100
 #define MASK_LONG_CALLS         0200
 
 #define TARGET_OP_TIME		(optimize && optimize_size == 0)
@@ -127,6 +128,7 @@ extern short *reg_renumber;	/* def in lo
 #define TARGET_M6811            (target_flags & MASK_M6811)
 #define TARGET_M6812            (target_flags & MASK_M6812)
 #define TARGET_AUTO_INC_DEC     (target_flags & MASK_AUTO_INC_DEC)
+#define TARGET_MIN_MAX          (target_flags & MASK_MIN_MAX)
 #define TARGET_NO_DIRECT_MODE   (target_flags & MASK_NO_DIRECT_MODE)
 #define TARGET_RELAX            (TARGET_NO_DIRECT_MODE)
 #define TARGET_LONG_CALLS       (target_flags & MASK_LONG_CALLS)
@@ -162,6 +164,10 @@ extern short *reg_renumber;	/* def in lo
     N_("Auto pre/post decrement increment allowed")},		\
   { "noauto-incdec", - MASK_AUTO_INC_DEC,			\
     N_("Auto pre/post decrement increment not allowed")},	\
+  { "inmax", MASK_MIN_MAX,                                     \
+    N_("Min/max instructions allowed")},                        \
+  { "nominmax", MASK_MIN_MAX,                                   \
+    N_("Min/max instructions not allowed")},                    \
   { "long-calls", MASK_LONG_CALLS,				\
     N_("Use call and rtc for function calls and returns")},	\
   { "nolong-calls", - MASK_LONG_CALLS,				\
Index: config/m68hc11/m68hc11.md
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/m68hc11/m68hc11.md,v
retrieving revision 1.37
diff -u -p -r1.37 m68hc11.md
--- config/m68hc11/m68hc11.md	14 Aug 2002 07:14:03 -0000	1.37
+++ config/m68hc11/m68hc11.md	14 Aug 2002 07:47:40 -0000
@@ -1666,7 +1666,7 @@
   [(set (match_operand:QI 0 "nonimmediate_operand" "=d,m")
 	(umin:QI (match_operand:QI 1 "nonimmediate_operand" "%0,0")
 		 (match_operand:QI 2 "general_operand" "m,d")))]
-  "TARGET_M6812"
+  "TARGET_M6812 && TARGET_MIN_MAX"
   "*
 {
   /* Flags are set according to (sub:QI (operand 1) (operand2)).
@@ -1688,7 +1688,7 @@
   [(set (match_operand:QI 0 "nonimmediate_operand" "=d,m")
 	(umax:QI (match_operand:QI 1 "nonimmediate_operand" "%0,0")
 		 (match_operand:QI 2 "general_operand" "m,d")))]
-  "TARGET_M6812"
+  "TARGET_M6812 && TARGET_MIN_MAX"
   "*
 {
   /* Flags are set according to (sub:QI (operand 1) (operand2)).
@@ -1710,7 +1710,7 @@
   [(set (match_operand:HI 0 "nonimmediate_operand" "=d,m")
 	(umin:HI (match_operand:HI 1 "nonimmediate_operand" "%0,0")
 		 (match_operand:HI 2 "general_operand" "m,d")))]
-  "TARGET_M6812"
+  "TARGET_M6812 && TARGET_MIN_MAX"
   "*
 {
   /* Flags are set according to (sub:HI (operand 1) (operand2)).  */
@@ -1729,7 +1729,7 @@
   [(set (match_operand:HI 0 "nonimmediate_operand" "=d,m")
 	(umax:HI (match_operand:HI 1 "nonimmediate_operand" "%0,0")
 		 (match_operand:HI 2 "general_operand" "m,d")))]
-  "TARGET_M6812"
+  "TARGET_M6812 && TARGET_MIN_MAX"
   "*
 {
   /* Flags are set according to (sub:HI (operand 1) (operand2)).  */