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finished optimized comparison asm generation

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This commit is contained in:
Irmen de Jong 2020-09-26 19:55:04 +02:00
parent b5fa6c2d0a
commit 8c448e5bc2
1 changed files with 52 additions and 48 deletions
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100
compiler/src/prog8/compiler/target/c64/codegen/ExpressionsAsmGen.kt
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@ -193,20 +193,6 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
asmgen.out(" lda $name | bpl $jumpIfFalseLabel")
return
}
else if (left is DirectMemoryRead) {
translateDirectMemReadExpression(left, false)
if(rightConstVal.number.toInt()!=0) {
asmgen.out("""
sec
sbc #${rightConstVal.number}
bvc +
eor #$80
+ bpl $jumpIfFalseLabel""")
}
else
asmgen.out(" bpl $jumpIfFalseLabel")
return
}
}
}
@ -331,22 +317,7 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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")
asmgen.out(" lda $name | bmi $jumpIfFalseLabel | beq $jumpIfFalseLabel")
return
}
}
@ -491,22 +462,6 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
lda $name
beq +
bpl $jumpIfFalseLabel
+""")
return
}
else if (left is DirectMemoryRead) {
translateDirectMemReadExpression(left, false)
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
clc
sbc #${rightConstVal.number}
bvc +
eor #$80
+ bpl $jumpIfFalseLabel""")
else
asmgen.out("""
beq +
bpl $jumpIfFalseLabel
+""")
return
}
@ -619,7 +574,32 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
private fun translateByteGreaterOrEqual(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 $name
sec
sbc #${rightConstVal.number}
bvc +
eor #$80
+ bmi $jumpIfFalseLabel""")
return
}
else {
asmgen.out(" lda $name | bmi $jumpIfFalseLabel")
return
}
}
}
}
asmgen.translateExpression(left)
asmgen.translateExpression(right)
asmgen.out(" jsr prog8_lib.greatereq_b | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")
@ -655,7 +635,31 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
private fun translateWordGreaterOrEqual(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 $name
cmp #<${rightConstVal.number}
lda $name+1
sbc #>${rightConstVal.number}
bvc +
eor #$80
+ bmi $jumpIfFalseLabel""")
else {
asmgen.out(" lda $name+1 | bmi $jumpIfFalseLabel")
}
return
}
}
}
asmgen.translateExpression(left)
asmgen.translateExpression(right)
asmgen.out(" jsr prog8_lib.greatereq_w | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")