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m68hc11.md ("*addsi3"): Use 'o' constraint to avoid the auto increment addressing modes. 

* config/m68hc11/m68hc11.md ("*addsi3"): Use 'o' constraint to
	avoid the auto increment addressing modes.
	("*subsi3"): Likewise.
	(split for add/sub on address): For 68HC12 push the value on
	the stack and do the operation with a pop.

From-SVN: r55083
This commit is contained in:
Stephane Carrez 2002-06-28 23:16:58 +02:00 committed by Stephane Carrez
parent 2fe938856a
commit ae9bd48177
2 changed files with 55 additions and 10 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2002-06-28 Stephane Carrez <stcarrez@nerim.fr>
* config/m68hc11/m68hc11.md ("*addsi3"): Use 'o' constraint to
avoid the auto increment addressing modes.
("*subsi3"): Likewise.
(split for add/sub on address): For 68HC12 push the value on
the stack and do the operation with a pop.
2002-06-28 Neil Booth <neil@daikokuya.co.uk>
* cpplib.c (_cpp_handle_directive): Move #define-specific

57
gcc/config/m68hc11/m68hc11.md
View File

@ -1,6 +1,6 @@
;;- Machine description file for Motorola 68HC11 and 68HC12.
;;- Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
;;- Contributed by Stephane Carrez (stcarrez@worldnet.fr)
;;- Contributed by Stephane Carrez (stcarrez@nerim.fr)
;; This file is part of GNU CC.
@ -1900,9 +1900,9 @@
}")
(define_insn "*addsi3"
[(set (match_operand:SI 0 "non_push_operand" "=m,D,!u,?D,D")
[(set (match_operand:SI 0 "non_push_operand" "=o,D,!u,?D,D")
(plus:SI (match_operand:SI 1 "non_push_operand" "%0,0,0,0,0")
(match_operand:SI 2 "general_operand" "ML,i,ML,?D,?miu")))
(match_operand:SI 2 "general_operand" "ML,i,ML,?D,?oiu")))
(clobber (match_scratch:HI 3 "=d,X,d,X,X"))]
""
"*
@ -2500,8 +2500,8 @@
(define_insn "*subsi3"
[(set (match_operand:SI 0 "register_operand" "=D,D,D,D,!u")
(minus:SI (match_operand:SI 1 "general_operand" "0,mi,0,!u,0")
(match_operand:SI 2 "general_operand" "mi,D,!u,D,!mui")))
(minus:SI (match_operand:SI 1 "general_operand" "0,oi,0,!u,0")
(match_operand:SI 2 "general_operand" "oi,D,!u,D,!oui")))
(clobber (match_scratch:HI 3 "=X,X,X,X,d"))]
""
"#")
@ -3932,19 +3932,55 @@
|| (GET_CODE (operands[2]) == CONST_INT
&& INTVAL (operands[2]) >= -4
&& INTVAL (operands[2]) <= 4)))"
[(set (match_dup 4) (match_dup 5))
[(set (match_dup 9) (match_dup 0))
(set (match_dup 4) (match_dup 5))
(set (match_dup 8) (match_dup 7))
(set (match_dup 0) (match_dup 1))
(parallel [(set (reg:HI D_REGNUM) (match_dup 0))
(set (match_dup 0) (reg:HI D_REGNUM))])
(set (reg:HI D_REGNUM) (match_op_dup 3 [(reg:HI D_REGNUM) (match_dup 6)]))
(parallel [(set (reg:HI D_REGNUM) (match_dup 0))
(set (match_dup 0) (reg:HI D_REGNUM))])]
"
/* Save the operand2 in a temporary location and use it. */
if ((H_REG_P (operands[2])
|| reg_mentioned_p (operands[0], operands[2]))
&& !(SP_REG_P (operands[2]) && GET_CODE (operands[3]) == PLUS))
operands[9] = operands[0];
/* For 68HC12, push the value on the stack and do the operation
with a pop. */
if (TARGET_M6812
&& m68hc11_non_shift_operator (operands[3], HImode)
&& (H_REG_P (operands[2])
|| (m68hc11_small_indexed_indirect_p (operands[2], HImode)
&& reg_mentioned_p (operands[0], operands[2]))))
{
operands[4] = gen_rtx (MEM, HImode,
gen_rtx (PRE_DEC, HImode,
gen_rtx (REG, HImode, HARD_SP_REGNUM)));
operands[6] = gen_rtx (MEM, HImode,
gen_rtx (POST_INC, HImode,
gen_rtx (REG, HImode, HARD_SP_REGNUM)));
operands[5] = operands[2];
operands[8] = operands[7] = operands[0];
}
/* Save the operand2 in a temporary location and use it. */
else if ((H_REG_P (operands[2])
|| reg_mentioned_p (operands[0], operands[2]))
&& !(SP_REG_P (operands[2]) && GET_CODE (operands[3]) == PLUS))
{
if (GET_CODE (operands[3]) == MINUS
&& reg_mentioned_p (operands[0], operands[2]))
{
operands[9] = gen_rtx (MEM, HImode,
gen_rtx (PRE_DEC, HImode,
gen_rtx (REG, HImode, HARD_SP_REGNUM)));
operands[1] = gen_rtx (MEM, HImode,
gen_rtx (POST_INC, HImode,
gen_rtx (REG, HImode, HARD_SP_REGNUM)));
operands[8] = gen_rtx (REG, HImode, SOFT_TMP_REGNUM);
operands[4] = operands[7] = operands[0];
operands[6] = operands[8];
operands[5] = operands[2];
}
else
{
operands[4] = gen_rtx (REG, HImode, SOFT_TMP_REGNUM);
operands[6] = operands[4];
if (!H_REG_P (operands[2]))
@ -3958,6 +3994,7 @@
operands[5] = operands[2];
operands[8] = operands[7] = operands[0];
}
}
}
else
{