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ccopt.rul
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ccopt.rul
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# ---------------------------------------
# RULES for MESCC source code optimizator
# ---------------------------------------
#
# The order is important.
#
# See CAUTION notes.
#
# See FIXME notes.
#
# ------------------------------
# CONSTANT ARITHMETIC OPERATIONS
# ------------------------------
#
# In MESCC, all constant arithmetic operations are signed (int).
#
# (int) const + const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
ADD HL,DE
LD HL,@=1+2
6
#
# (int) const - const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccsub
LD HL,@=1-2
8
#
# (int) const * const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccmul
LD HL,@=1*2
8
#
# (int) const / const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccdiv
LD HL,@=1/2
8
#
# (int) const % const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccmod
LD HL,@=1%2
8
#
# (int) const | const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccor
LD HL,@=1|2
8
#
# (int) const & const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccand
LD HL,@=1&2
8
#
# (int) const ^ const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccxor
LD HL,@=1^2
8
#
# (int) const >> const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccasr
LD HL,@=1>>2
8
#
# (int) const << const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccasl
LD HL,@=1<<2
8
#
# (int) const || const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL cclgor
LD HL,@=1||2
8
#
# (int) const && const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccland
LD HL,@=1&&2
8
#
# (int) const == const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL cceq
LD HL,@=1==2
8
#
# (int) const != const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccne
LD HL,@=1!=2
8
#
# (int) const > const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccgt
LD HL,@=1>2
8
#
# (int) const < const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL cclt
LD HL,@=1<2
8
#
# (int) const >= const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccge
LD HL,@=1>=2
8
#
# (int) const <= const
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
CALL ccle
LD HL,@=1<=2
8
#
# (int) double a const
#
LD HL,@1
ADD HL,HL
LD HL,@=1+1
1
#
# (int) !const (logical not)
#
LD HL,@1
CALL cclgnot
LD HL,@=!1
3
#
# (int) -const (2 complement or negate)
#
LD HL,@1
CALL ccneg
LD HL,@=-1
3
#
# (int) ~const (1 complement)
#
LD HL,@1
CALL cccom
LD HL,@=~1
3
# -----------------
# SOMETHING + CONST
# -----------------
#
# HL + 0
#
PUSH HL
LD HL,0
POP DE
ADD HL,DE
6
#
# HL + 1
#
PUSH HL
LD HL,1
POP DE
ADD HL,DE
INC HL
5
#
# HL + 2
#
PUSH HL
LD HL,2
POP DE
ADD HL,DE
INC HL
INC HL
4
#
# HL + 3
#
PUSH HL
LD HL,3
POP DE
ADD HL,DE
INC HL
INC HL
INC HL
3
#
# HL + 4
#
PUSH HL
LD HL,4
POP DE
ADD HL,DE
INC HL
INC HL
INC HL
INC HL
2
#
# HL + 5
#
PUSH HL
LD HL,5
POP DE
ADD HL,DE
INC HL
INC HL
INC HL
INC HL
INC HL
1
# ----------------------
# SYMBOL ADDRESS + CONST
# ----------------------
#
LD HL,@a
PUSH HL
LD HL,@1
POP DE
ADD HL,DE
LD HL,@a+@1
6
# ----------------------
# SYMBOL ADDRESS - CONST
# ----------------------
#
LD HL,@a
PUSH HL
LD HL,@1
POP DE
CALL ccsub
LD HL,@a-@1
8
# -----------------
# SOMETHING - CONST
# -----------------
#
# HL - 0
#
PUSH HL
LD HL,0
POP DE
CALL ccsub
8
#
# HL - 1
#
PUSH HL
LD HL,1
POP DE
CALL ccsub
DEC HL
7
#
# HL - 2
#
PUSH HL
LD HL,2
POP DE
CALL ccsub
DEC HL
DEC HL
6
#
# HL - 3
#
PUSH HL
LD HL,3
POP DE
CALL ccsub
DEC HL
DEC HL
DEC HL
5
#
# HL - 4
#
PUSH HL
LD HL,4
POP DE
CALL ccsub
DEC HL
DEC HL
DEC HL
DEC HL
4
#
# HL - 5
#
PUSH HL
LD HL,5
POP DE
CALL ccsub
DEC HL
DEC HL
DEC HL
DEC HL
DEC HL
3
#
# HL - 6
#
PUSH HL
LD HL,6
POP DE
CALL ccsub
DEC HL
DEC HL
DEC HL
DEC HL
DEC HL
DEC HL
2
#
# HL - 7
#
PUSH HL
LD HL,7
POP DE
CALL ccsub
DEC HL
DEC HL
DEC HL
DEC HL
DEC HL
DEC HL
DEC HL
1
#
# -------------------------------
# SYMBOL ADDRESS + SYMBOL ADDRESS
# -------------------------------
#
LD HL,@a
PUSH HL
LD HL,@b
POP DE
ADD HL,DE
LD HL,@a+@b
6
# -------------------------------
# SYMBOL ADDRESS - SYMBOL ADDRESS
# -------------------------------
#
LD HL,@a
PUSH HL
LD HL,@b
POP DE
CALL ccsub
LD HL,@a-@b
8
# ------------------
# SOMETHING OP CONST
# ------------------
#
# (int, uint) something + const
#
PUSH HL
LD HL,@1
POP DE
ADD HL,DE
LD DE,@1
ADD HL,DE
2
#
# (int) something * const
#
PUSH HL
LD HL,@1
POP DE
CALL ccmul
LD DE,@1
CALL ccmul
2
#
# (uint) something * const
#
PUSH HL
LD HL,@1
POP DE
CALL ccumul
LD DE,@1
CALL ccumul
2
#
# (int, uint) something | const
#
PUSH HL
LD HL,@1
POP DE
CALL ccor
LD DE,@1
CALL ccor
2
#
# (int, uint) something & const
#
PUSH HL
LD HL,@1
POP DE
CALL ccand
LD DE,@1
CALL ccand
2
#
# (int, uint) something ^ const
#
PUSH HL
LD HL,@1
POP DE
CALL ccxor
LD DE,@1
CALL ccxor
2
#
# (int, uint) something == const
#
PUSH HL
LD HL,@1
POP DE
CALL cceq
LD DE,@1
CALL cceq
2
#
# (int, uint) something != const
#
PUSH HL
LD HL,@1
POP DE
CALL ccneq
LD DE,@1
CALL ccneq
2
#
# (int, uint) something || const
#
PUSH HL
LD HL,@1
POP DE
CALL cclgor
LD DE,@1
CALL cclgor
2
#
# (int, uint) something && const
#
PUSH HL
LD HL,@1
POP DE
CALL cclgand
LD DE,@1
CALL cclgand
2
# -------------------
# SOMETHING OP SYMBOL
# -------------------
#
# (int, uint) something + symbol
#
PUSH HL
LD HL,@a
POP DE
ADD HL,DE
LD DE,@a
ADD HL,DE
2
#
# (int) something * symbol
#
PUSH HL
LD HL,@a
POP DE
CALL ccmul
LD DE,@a
CALL ccmul
2
#
# (uint) something * symbol
#
PUSH HL
LD HL,@a
POP DE
CALL ccumul
LD DE,@a
CALL ccumul
2
#
# (int, uint) something | symbol
#
PUSH HL
LD HL,@a
POP DE
CALL ccor
LD DE,@a
CALL ccor
2
#
# (int, uint) something & symbol
#
PUSH HL
LD HL,@a
POP DE
CALL ccand
LD DE,@a
CALL ccand
2
#
# (int, uint) something ^ symbol
#
PUSH HL
LD HL,@a
POP DE
CALL ccxor
LD DE,@a
CALL ccxor
2
#
# (int, uint) something == symbol
#
PUSH HL
LD HL,@a
POP DE
CALL cceq
LD DE,@a
CALL cceq
2
#
# (int, uint) something != symbol
#
PUSH HL
LD HL,@a
POP DE
CALL ccneq
LD DE,@a
CALL ccneq
2
#
# (int, uint) something || symbol
#
PUSH HL
LD HL,@a
POP DE
CALL cclgor
LD DE,@a
CALL cclgor
2
#
# (int, uint) something && symbol
#
PUSH HL
LD HL,@a
POP DE
CALL cclgand
LD DE,@a
CALL cclgand
2
# ---------------------
# SOMETHING OP (SYMBOL)
# ---------------------
#
# (int, uint) something + (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
ADD HL,DE
LD DE,(@a)
ADD HL,DE
2
#
# (int) something * (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL ccmul
LD DE,(@a)
CALL ccmul
2
#
# (uint) something * (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL ccumul
LD DE,(@a)
CALL ccumul
2
#
# (int, uint) something | (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL ccor
LD DE,(@a)
CALL ccor
2
#
# (int, uint) something & (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL ccand
LD DE,(@a)
CALL ccand
2
#
# (int, uint) something ^ (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL ccxor
LD DE,(@a)
CALL ccxor
2
#
# (int, uint) something == (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL cceq
LD DE,(@a)
CALL cceq
2
#
# (int, uint) something != (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL ccneq
LD DE,(@a)
CALL ccneq
2
#
# (int, uint) something || (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL cclgor
LD DE,(@a)
CALL cclgor
2
#
# (int, uint) something && (symbol)
#
PUSH HL
LD HL,(@a)
POP DE
CALL cclgand
LD DE,(@a)
CALL cclgand
2
# -------------------------------------------------
# CAUTION: This depends on value returned from cceq
# -------------------------------------------------
#
# CALL cceq -- MUST TO BE REVISED. Also cclgnot.
# LD A,H
# OR L
#
# CALL cceq
#
#2
# -------------------------------------------------
# CAUTION: This depends on value returned from ccne
# -------------------------------------------------
#
CALL ccne
LD A,H
OR L
CALL ccne
2
# -------
#
# -------
#
# ?
#
LD HL,@1
PUSH HL
LD HL,@2
POP DE
LD DE,@1
LD HL,@2
2
#
# ?
#
LD HL,@a
PUSH HL
LD HL,@b
POP DE
LD DE,@a
LD HL,@b
2
#
# ?
#
LD HL,(@a)
PUSH HL
LD HL,(@b)
POP DE
LD DE,(@a)
LD HL,(@b)
2
#
# ?
#
PUSH HL
LD HL,@1
POP DE
EX DE,HL
LD HL,@1
1
#
# ?
#
PUSH HL
LD HL,@a
POP DE
EX DE,HL
LD HL,@a
1
#
# ?
#
PUSH HL
LD HL,(@a)
POP DE
EX DE,HL
LD HL,(@a)
1
# ---------------
# ACCESS TO STACK
# ---------------
#
# ?
#
LD HL,0
ADD HL,SP
CALL ccgw
POP HL
PUSH HL
5
#
# ?
#
LD HL,1
ADD HL,SP
CALL ccgw
POP HL
POP BC
PUSH BC
PUSH HL
LD L,H
LD H,C