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Irmen de Jong 2020-09-26 19:02:29 +02:00
parent 7f69f9ce4f
commit 09bd47f98b
2 changed files with 88 additions and 22 deletions
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90
compiler/src/prog8/compiler/target/c64/codegen/ExpressionsAsmGen.kt
View File

@ -57,6 +57,7 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
in ByteDatatypes -> translateByteEquals(left, right, leftConstVal, rightConstVal, jumpIfFalseLabel)
in WordDatatypes -> translateWordEquals(left, right, leftConstVal, rightConstVal, jumpIfFalseLabel)
DataType.FLOAT -> {
// TODO optimize the easiest compares such as == 0, == 1
translateExpression(left)
translateExpression(right)
asmgen.out(" jsr floats.equal_f | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")
@ -69,6 +70,7 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
in ByteDatatypes -> translateByteNotEquals(left, right, leftConstVal, rightConstVal, jumpIfFalseLabel)
in WordDatatypes -> translateWordNotEquals(left, right, leftConstVal, rightConstVal, jumpIfFalseLabel)
DataType.FLOAT -> {
// TODO optimize the easiest compares such as != 0, != 1
translateExpression(left)
translateExpression(right)
asmgen.out(" jsr floats.notequal_f | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")
@ -310,7 +312,45 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
private fun translateByteGreater(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
// TODO compare with optimized asm
if(rightConstVal!=null) {
if(leftConstVal!=null) {
if(rightConstVal<=leftConstVal)
asmgen.out(" jmp $jumpIfFalseLabel")
return
} else {
if (left is IdentifierReference) {
val name = asmgen.asmVariableName(left)
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
lda $name
clc
sbc #${rightConstVal.number}
bvc +
eor #$80
+ bpl +
bmi $jumpIfFalseLabel
+""")
else
asmgen.out(" lda $name | bmi $jumpIfFalseLabel")
return
}
else if (left is DirectMemoryRead) {
translateDirectMemReadExpression(left, false)
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
clc
sbc #${rightConstVal.number}
bvc +
eor #$80
+ bpl +
bmi $jumpIfFalseLabel
+""")
else
asmgen.out(" bmi $jumpIfFalseLabel")
return
}
}
}
asmgen.translateExpression(left)
asmgen.translateExpression(right)
asmgen.out(" jsr prog8_lib.greater_b | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")
@ -352,7 +392,36 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
private fun translateWordGreater(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
// TODO compare with optimized asm
if(rightConstVal!=null) {
if(leftConstVal!=null) {
if(rightConstVal<=leftConstVal)
asmgen.out(" jmp $jumpIfFalseLabel")
return
} else {
if (left is IdentifierReference) {
val name = asmgen.asmVariableName(left)
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
lda #<${rightConstVal.number}
cmp $name
lda #>${rightConstVal.number}
sbc $name+1
bvc +
eor #$80
+ bpl $jumpIfFalseLabel""")
else
asmgen.out("""
lda #0
cmp $name
sbc $name+1
bvc +
eor #$80
+ bpl $jumpIfFalseLabel""")
return
}
}
}
asmgen.translateExpression(left)
asmgen.translateExpression(right)
asmgen.out(" jsr prog8_lib.greater_w | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")
@ -382,13 +451,12 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
else if (left is DirectMemoryRead) {
translateDirectMemReadExpression(left, false)
if(rightConstVal.number.toInt()!=0) {
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
cmp #${rightConstVal.number}
beq +
bcs $jumpIfFalseLabel
+""")
}
else
asmgen.out(" bne $jumpIfFalseLabel")
return
@ -428,14 +496,13 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
else if (left is DirectMemoryRead) {
translateDirectMemReadExpression(left, false)
if(rightConstVal.number.toInt()!=0) {
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
clc
sbc #${rightConstVal.number}
bvc +
eor #$80
+ bpl $jumpIfFalseLabel""")
}
else
asmgen.out("""
beq +
@ -511,6 +578,7 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
bvc +
eor #$80
+ bmi $jumpIfFalseLabel""")
return
}
}
}
@ -664,7 +732,7 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
} else {
if (left is IdentifierReference) {
val name = asmgen.asmVariableName(left)
if(rightConstVal.number.toInt()!=0) {
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
lda $name
cmp #<${rightConstVal.number}
@ -672,13 +740,12 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
lda $name+1
cmp #>${rightConstVal.number}
bne $jumpIfFalseLabel""")
} else {
else
asmgen.out("""
lda $name
bne $jumpIfFalseLabel
lda $name+1
bne $jumpIfFalseLabel""")
}
return
}
}
@ -698,7 +765,7 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
} else {
if (left is IdentifierReference) {
val name = asmgen.asmVariableName(left)
if(rightConstVal.number.toInt()!=0) {
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
lda $name
cmp #<${rightConstVal.number}
@ -707,14 +774,13 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
cmp #>${rightConstVal.number}
beq $jumpIfFalseLabel
+""")
} else {
else
asmgen.out("""
lda $name
bne +
lda $name+1
beq $jumpIfFalseLabel
+""")
}
return
}
}

20
examples/cmp/comparisons.p8
View File

@ -15,18 +15,18 @@ main {
repeat(25)
txt.chrout('\n')
; equal()
; txt.chrout('\n')
; notequal()
; txt.chrout('\n')
; less()
; txt.chrout('\n')
; greater()
; txt.chrout('\n')
equal()
txt.chrout('\n')
notequal()
txt.chrout('\n')
less()
txt.chrout('\n')
greater()
txt.chrout('\n')
lessequal()
txt.chrout('\n')
; greaterequal()
; txt.chrout('\n')
greaterequal()
txt.chrout('\n')
}
sub equal() {