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to reduce complexity, augmented assignment has been removed again from internal Ast and codegen for now.

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This commit is contained in:
Irmen de Jong 2020-07-26 13:48:31 +02:00
parent b37231d0f5
commit 8a3189123a
19 changed files with 1437 additions and 814 deletions
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2
compiler/res/version.txt
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@ -1 +1 @@
3.0
3.1-SNAPSHOT

5
compiler/src/prog8/ast/AstToSourceCode.kt
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@ -288,10 +288,7 @@ class AstToSourceCode(val output: (text: String) -> Unit, val program: Program):
override fun visit(assignment: Assignment) {
assignment.target.accept(this)
if (assignment.aug_op != null && assignment.aug_op != "setvalue")
output(" ${assignment.aug_op} ")
else
output(" = ")
output(" = ")
assignment.value.accept(this)
}

10
compiler/src/prog8/ast/antlr/Antr2Kotlin.kt
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@ -161,14 +161,14 @@ private fun prog8Parser.StatementContext.toAst() : Statement {
if(vardecl!=null) return vardecl
assignment()?.let {
return Assignment(it.assign_target().toAst(), null, it.expression().toAst(), it.toPosition())
return Assignment(it.assign_target().toAst(), it.expression().toAst(), it.toPosition())
}
augassignment()?.let {
return Assignment(it.assign_target().toAst(),
it.operator.text,
it.expression().toAst(),
it.toPosition())
// replace A += X with A = A + X
val target = it.assign_target().toAst()
val expression = BinaryExpression(target.toExpression(), it.operator.text.substring(0, 1), it.expression().toAst(), it.expression().toPosition())
return Assignment(it.assign_target().toAst(), expression, it.toPosition())
}
postincrdecr()?.let {

2
compiler/src/prog8/ast/expressions/AstExpressions.kt
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@ -25,6 +25,8 @@ sealed class Expression: Node {
abstract fun referencesIdentifiers(vararg name: String): Boolean
abstract fun inferType(program: Program): InferredTypes.InferredType
infix fun isSameAs(assigntarget: AssignTarget) = assigntarget.isSameAs(this)
infix fun isSameAs(other: Expression): Boolean {
if(this===other)
return true

3
compiler/src/prog8/ast/processing/AstVariousTransforms.kt
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@ -26,19 +26,16 @@ internal class AstVariousTransforms(private val program: Program) : AstWalker()
val tempvar = IdentifierReference(listOf(tempname), first.position)
val assignTemp = Assignment(
AssignTarget(tempvar, null, null, first.position),
null,
first,
first.position
)
val assignFirst = Assignment(
AssignTarget.fromExpr(first),
null,
second,
first.position
)
val assignSecond = Assignment(
AssignTarget.fromExpr(second),
null,
tempvar,
first.position
)

11
compiler/src/prog8/ast/processing/StatementReorderer.kt
View File

@ -79,7 +79,7 @@ internal class StatementReorderer(val program: Program) : AstWalker() {
// move the vardecl (without value) to the scope and replace this with a regular assignment
decl.value = null
val target = AssignTarget(IdentifierReference(listOf(decl.name), decl.position), null, null, decl.position)
val assign = Assignment(target, null, declValue, decl.position)
val assign = Assignment(target, declValue, decl.position)
return listOf(
IAstModification.ReplaceNode(decl, assign, parent),
IAstModification.InsertFirst(decl, decl.definingScope() as Node)
@ -99,10 +99,6 @@ internal class StatementReorderer(val program: Program) : AstWalker() {
}
override fun before(assignment: Assignment, parent: Node): Iterable<IAstModification> {
if(assignment.aug_op!=null) {
return listOf(IAstModification.ReplaceNode(assignment, assignment.asDesugaredNonaugmented(), parent))
}
val valueType = assignment.value.inferType(program)
val targetType = assignment.target.inferType(program, assignment)
if(valueType.istype(DataType.STRUCT) && targetType.istype(DataType.STRUCT)) {
@ -137,7 +133,7 @@ internal class StatementReorderer(val program: Program) : AstWalker() {
val mangled = mangledStructMemberName(identifierName, targetDecl.name)
val idref = IdentifierReference(listOf(mangled), structAssignment.position)
val assign = Assignment(AssignTarget(idref, null, null, structAssignment.position),
null, sourceValue, sourceValue.position)
sourceValue, sourceValue.position)
assign.linkParents(structAssignment)
assign
}
@ -168,8 +164,7 @@ internal class StatementReorderer(val program: Program) : AstWalker() {
val idref = IdentifierReference(listOf(mangled), structAssignment.position)
val sourcemangled = mangledStructMemberName(sourceVar.name, sourceDecl.name)
val sourceIdref = IdentifierReference(listOf(sourcemangled), structAssignment.position)
val assign = Assignment(AssignTarget(idref, null, null, structAssignment.position),
null, sourceIdref, member.second.position)
val assign = Assignment(AssignTarget(idref, null, null, structAssignment.position), sourceIdref, member.second.position)
assign.linkParents(structAssignment)
assign
}

36
compiler/src/prog8/ast/statements/AstStatements.kt
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@ -324,7 +324,7 @@ class ArrayIndex(var index: Expression, override val position: Position) : Node
fun size() = (index as? NumericLiteralValue)?.number?.toInt()
}
open class Assignment(var target: AssignTarget, var aug_op : String?, var value: Expression, override val position: Position) : Statement() {
open class Assignment(var target: AssignTarget, var value: Expression, override val position: Position) : Statement() {
override lateinit var parent: Node
override fun linkParents(parent: Node) {
@ -346,30 +346,7 @@ open class Assignment(var target: AssignTarget, var aug_op : String?, var value:
override fun accept(visitor: AstWalker, parent: Node) = visitor.visit(this, parent)
override fun toString(): String {
return("Assignment(augop: $aug_op, target: $target, value: $value, pos=$position)")
}
fun asDesugaredNonaugmented(): Assignment {
val augmented = aug_op ?: return this
val leftOperand: Expression =
when {
target.identifier != null -> target.identifier!!
target.arrayindexed != null -> target.arrayindexed!!
target.memoryAddress != null -> DirectMemoryRead(target.memoryAddress!!.addressExpression, value.position)
else -> throw FatalAstException("strange this")
}
val assignment =
if(augmented=="setvalue") {
Assignment(target, null, value, position)
} else {
val expression = BinaryExpression(leftOperand, augmented.substringBeforeLast('='), value, position)
Assignment(target, null, expression, position)
}
assignment.linkParents(parent)
return assignment
return("Assignment(target: $target, value: $value, pos=$position)")
}
}
@ -425,6 +402,15 @@ data class AssignTarget(var identifier: IdentifierReference?,
return InferredTypes.unknown()
}
fun toExpression(): Expression {
return when {
identifier!=null -> identifier!!
arrayindexed!=null -> arrayindexed!!
memoryAddress!=null -> DirectMemoryRead(memoryAddress.addressExpression, memoryAddress.position)
else -> throw FatalAstException("invalid assignmenttarget $this")
}
}
infix fun isSameAs(value: Expression): Boolean {
return when {
this.memoryAddress!=null -> {

2
compiler/src/prog8/compiler/BeforeAsmGenerationAstChanger.kt
View File

@ -40,7 +40,7 @@ internal class BeforeAsmGenerationAstChanger(val program: Program, val errors: E
val initValue = it.value!! // assume here that value has always been set by now
it.value = null // make sure no value init assignment for this vardecl will be created later (would be superfluous)
val target = AssignTarget(IdentifierReference(listOf(it.name), it.position), null, null, it.position)
val assign = Assignment(target, null, initValue, it.position)
val assign = Assignment(target, initValue, it.position)
initValue.parent = assign
IAstModification.InsertFirst(assign, scope)
} + decls.map { IAstModification.ReplaceNode(it, NopStatement(it.position), scope) } +

4
compiler/src/prog8/compiler/target/c64/codegen/AsmGen.kt
View File

@ -185,7 +185,7 @@ internal class AsmGen(private val program: Program,
val scopedFullName = decl.makeScopedName(decl.name).split('.')
require(scopedFullName.first()==block.name)
val target = AssignTarget(IdentifierReference(scopedFullName.drop(1), decl.position), null, null, decl.position)
val assign = Assignment(target, null, decl.value!!, decl.position)
val assign = Assignment(target, decl.value!!, decl.position)
assign.linkParents(decl.parent)
assignmentAsmGen.translate(assign)
}
@ -929,7 +929,7 @@ $endLabel""")
val next = (stmt.parent as INameScope).nextSibling(stmt)
if (next !is ForLoop || next.loopVar.nameInSource.single() != stmt.name) {
val target = AssignTarget(IdentifierReference(listOf(stmt.name), stmt.position), null, null, stmt.position)
val assign = Assignment(target, null, stmt.value!!, stmt.position)
val assign = Assignment(target, stmt.value!!, stmt.position)
assign.linkParents(stmt.parent)
translate(assign)
}

721
compiler/src/prog8/compiler/target/c64/codegen/AssignmentAsmGen.kt
View File

@ -18,728 +18,13 @@ import prog8.compiler.toHex
internal class AssignmentAsmGen(private val program: Program, private val errors: ErrorReporter, private val asmgen: AsmGen) {
internal fun translate(assign: Assignment) {
if (assign.aug_op == null)
translateNormalAssignment(assign)
else
translateInplaceAssignment(assign)
// TODO check for in-place assignment A = A <operator> X and generate better code for that
translateNormalAssignment(assign)
}
private fun translateInplaceAssignment(assign: Assignment) {
require(assign.aug_op != null)
when {
assign.target.identifier != null -> {
if (inplaceAssignToIdentifier(assign))
return
}
assign.target.memoryAddress != null -> {
if (inplaceAssignToMemoryByte(assign))
return
}
assign.target.arrayindexed != null -> {
if (inplaceAssignToArrayOrString(assign))
return
}
}
// TODO this is the slow FALLBACK, eventually we don't want to have to use it anymore:
errors.warn("using suboptimal in-place assignment code (this should still be optimized)", assign.position)
val normalAssignment = assign.asDesugaredNonaugmented()
return translateNormalAssignment(normalAssignment)
}
private fun inplaceAssignToArrayOrString(assign: Assignment): Boolean {
val targetArray = assign.target.arrayindexed!!
val arrayName = targetArray.identifier
val arrayIndex = targetArray.arrayspec.index
val targetName = asmgen.asmIdentifierName(arrayName)
val arrayDt = arrayName.targetVarDecl(program.namespace)!!.datatype
val constValue = assign.value.constValue(program)?.number
if (constValue != null) {
// constant value to set in array
val hexValue = constValue.toHex()
if (assign.aug_op == "setvalue") {
when (arrayDt) {
DataType.ARRAY_B, DataType.ARRAY_UB, DataType.STR -> {
if (arrayIndex is NumericLiteralValue)
asmgen.out(" ldy #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoY(targetArray)
asmgen.out(" lda #$hexValue | sta $targetName,y")
}
DataType.ARRAY_W, DataType.ARRAY_UW -> {
if (arrayIndex is NumericLiteralValue)
asmgen.out(" lda #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoA(targetArray)
asmgen.out("""
asl a
tay
lda #<$hexValue
sta $targetName,y
lda #>$hexValue
sta $targetName+1,y
""")
}
DataType.ARRAY_F -> {
assignFromFloatConstant(assign.target, constValue.toDouble())
}
else -> throw AssemblyError("assignment to array: invalid array dt $arrayDt")
}
} else {
TODO("aug assignment to element in array/string")
}
return true
}
// non-const value.
// !!! DON'T FORGET : CAN BE AUGMENTED ASSIGNMENT !!!
when (assign.value) {
is IdentifierReference -> {
val sourceName = asmgen.asmIdentifierName(assign.value as IdentifierReference)
when(arrayDt) {
DataType.ARRAY_B, DataType.ARRAY_UB, DataType.STR -> {
asmgen.out(" lda $sourceName")
if (arrayIndex is NumericLiteralValue)
asmgen.out(" ldy #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoY(targetArray)
asmgen.out(" sta $targetName,y")
}
DataType.ARRAY_W, DataType.ARRAY_UW -> {
if (arrayIndex is NumericLiteralValue)
asmgen.out(" lda #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoA(targetArray)
asmgen.out("""
asl a
tay
lda $sourceName
sta $targetName,y
lda $sourceName+1
sta $targetName+1,y
""")
}
DataType.ARRAY_F -> return false // TODO optimize instead of fallback?
else -> throw AssemblyError("assignment to array: invalid array dt $arrayDt")
}
return true
}
is AddressOf -> {
TODO("assign address into array $assign")
}
is DirectMemoryRead -> {
TODO("assign memory read into array $assign")
}
is ArrayIndexedExpression -> {
if(assign.aug_op != "setvalue")
return false // we don't put effort into optimizing anything beside simple assignment
val valueArrayExpr = assign.value as ArrayIndexedExpression
val valueArrayIndex = valueArrayExpr.arrayspec.index
val valueVariablename = asmgen.asmIdentifierName(valueArrayExpr.identifier)
// val valueDt = valueArrayExpr.identifier.inferType(program).typeOrElse(DataType.STRUCT)
when(arrayDt) {
DataType.ARRAY_UB, DataType.ARRAY_B, DataType.STR -> {
if (valueArrayIndex is NumericLiteralValue)
asmgen.out(" ldy #${valueArrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoY(valueArrayExpr)
asmgen.out(" lda $valueVariablename,y")
if (arrayIndex is NumericLiteralValue)
asmgen.out(" ldy #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoY(targetArray)
asmgen.out(" sta $targetName,y")
}
DataType.ARRAY_UW, DataType.ARRAY_W -> {
if (valueArrayIndex is NumericLiteralValue)
asmgen.out(" ldy #2*${valueArrayIndex.number.toHex()}")
else {
asmgen.translateArrayIndexIntoA(valueArrayExpr)
asmgen.out(" asl a | tay")
}
asmgen.out("""
lda $valueVariablename,y
pha
lda $valueVariablename+1,y
pha
""")
if (arrayIndex is NumericLiteralValue)
asmgen.out(" ldy #2*${arrayIndex.number.toHex()}")
else {
asmgen.translateArrayIndexIntoA(targetArray)
asmgen.out(" asl a | tay")
}
asmgen.out("""
pla
sta $targetName+1,y
pla
sta $targetName,y
""")
return true
}
DataType.ARRAY_F -> {
if (valueArrayIndex is NumericLiteralValue)
asmgen.out(" ldy #5*${valueArrayIndex.number.toHex()}")
else {
asmgen.translateArrayIndexIntoA(valueArrayExpr)
asmgen.out("""
sta ${C64Zeropage.SCRATCH_REG}
asl a
asl a
clc
adc ${C64Zeropage.SCRATCH_REG}
tay
""")
}
asmgen.out("""
lda $valueVariablename,y
pha
lda $valueVariablename+1,y
pha
lda $valueVariablename+2,y
pha
lda $valueVariablename+3,y
pha
lda $valueVariablename+4,y
pha
""")
if (arrayIndex is NumericLiteralValue)
asmgen.out(" ldy #5*${arrayIndex.number.toHex()}")
else {
asmgen.translateArrayIndexIntoA(targetArray)
asmgen.out("""
sta ${C64Zeropage.SCRATCH_REG}
asl a
asl a
clc
adc ${C64Zeropage.SCRATCH_REG}
tay
""")
}
asmgen.out("""
pla
sta $targetName+4,y
pla
sta $targetName+3,y
pla
sta $targetName+2,y
pla
sta $targetName+1,y
pla
sta $targetName,y
""")
return true
}
else -> throw AssemblyError("assignment to array: invalid array dt")
}
return true
}
else -> {
fallbackAssignment(assign)
return true
}
}
return false
}
private fun inplaceAssignToMemoryByte(assign: Assignment): Boolean {
val address = assign.target.memoryAddress?.addressExpression?.constValue(program)?.number
?: return inplaceAssignToNonConstMemoryByte(assign)
val hexAddr = address.toHex()
val constValue = assign.value.constValue(program)
if (constValue != null) {
val hexValue = constValue.number.toHex()
when (assign.aug_op) {
"setvalue" -> asmgen.out(" lda #$hexValue | sta $hexAddr")
"+=" -> asmgen.out(" lda $hexAddr | clc | adc #$hexValue | sta $hexAddr")
"-=" -> asmgen.out(" lda $hexAddr | sec | sbc #$hexValue | sta $hexAddr")
"/=" -> TODO("membyte /= const $hexValue")
"*=" -> TODO("membyte *= const $hexValue")
"&=" -> asmgen.out(" lda $hexAddr | and #$hexValue | sta $hexAddr")
"|=" -> asmgen.out(" lda $hexAddr | ora #$hexValue | sta $hexAddr")
"^=" -> asmgen.out(" lda $hexAddr | eor #$hexValue | sta $hexAddr")
"%=" -> TODO("membyte %= const $hexValue")
"<<=" -> throw AssemblyError("<<= should have been replaced by lsl()")
">>=" -> throw AssemblyError("<<= should have been replaced by lsr()")
else -> throw AssemblyError("invalid aug_op ${assign.aug_op}")
}
return true
}
// non-const value.
when (assign.value) {
is IdentifierReference -> {
val sourceName = asmgen.asmIdentifierName(assign.value as IdentifierReference)
when(assign.aug_op) {
"setvalue" -> asmgen.out(" lda $sourceName | sta $hexAddr")
else -> TODO("membyte aug.assign variable $assign")
}
return true
}
is DirectMemoryRead -> {
val memory = (assign.value as DirectMemoryRead).addressExpression.constValue(program)!!.number.toHex()
when(assign.aug_op) {
"setvalue" -> asmgen.out(" lda $memory | sta $hexAddr")
else -> TODO("membyte aug.assign memread $assign")
}
return true
}
is ArrayIndexedExpression -> {
TODO("membyte = array value $assign")
}
is AddressOf -> throw AssemblyError("can't assign address to byte")
else -> {
fallbackAssignment(assign)
return true
}
}
return false
}
private fun inplaceAssignToNonConstMemoryByte(assign: Assignment): Boolean {
// target address is not constant, so evaluate it from the stack
asmgen.translateExpression(assign.target.memoryAddress!!.addressExpression)
asmgen.out("""
inx
lda $ESTACK_LO_HEX,x
sta ${C64Zeropage.SCRATCH_W1}
lda $ESTACK_HI_HEX,x
sta ${C64Zeropage.SCRATCH_W1}+1
""")
val constValue = assign.value.constValue(program)
if (constValue != null) {
val hexValue = constValue.number.toHex()
asmgen.out(" ldy #0")
when (assign.aug_op) {
"setvalue" -> asmgen.out(" lda #$hexValue | sta (${C64Zeropage.SCRATCH_W1}),y")
"+=" -> asmgen.out(" lda (${C64Zeropage.SCRATCH_W1}),y | clc | adc #$hexValue | sta (${C64Zeropage.SCRATCH_W1}),y")
"-=" -> asmgen.out(" lda (${C64Zeropage.SCRATCH_W1}),y | sec | sbc #$hexValue | sta (${C64Zeropage.SCRATCH_W1}),y")
"/=" -> TODO("membyte /= const $hexValue")
"*=" -> TODO("membyte *= const $hexValue")
"&=" -> asmgen.out(" lda (${C64Zeropage.SCRATCH_W1}),y | and #$hexValue | sta (${C64Zeropage.SCRATCH_W1}),y")
"|=" -> asmgen.out(" lda (${C64Zeropage.SCRATCH_W1}),y | ora #$hexValue | sta (${C64Zeropage.SCRATCH_W1}),y")
"^=" -> asmgen.out(" lda (${C64Zeropage.SCRATCH_W1}),y | eor #$hexValue | sta (${C64Zeropage.SCRATCH_W1}),y")
"%=" -> TODO("membyte %= const $hexValue")
"<<=" -> throw AssemblyError("<<= should have been replaced by lsl()")
">>=" -> throw AssemblyError("<<= should have been replaced by lsr()")
else -> throw AssemblyError("invalid aug_op ${assign.aug_op}")
}
return true
}
// non-const value.
// !!! DON'T FORGET : CAN BE AUGMENTED ASSIGNMENT !!!
when (assign.value) {
is IdentifierReference -> {
val sourceName = asmgen.asmIdentifierName(assign.value as IdentifierReference)
TODO("membyte = variable $assign")
}
is DirectMemoryRead -> {
TODO("membyte = memread $assign")
}
is ArrayIndexedExpression -> {
if (assign.aug_op == "setvalue") {
val arrayExpr = assign.value as ArrayIndexedExpression
val arrayIndex = arrayExpr.arrayspec.index
val variablename = asmgen.asmIdentifierName(arrayExpr.identifier)
val arrayDt = arrayExpr.identifier.inferType(program).typeOrElse(DataType.STRUCT)
if (arrayDt != DataType.ARRAY_B && arrayDt != DataType.ARRAY_UB && arrayDt != DataType.STR)
throw AssemblyError("assign to memory byte: expected byte array or string source")
if (arrayIndex is NumericLiteralValue)
asmgen.out(" ldy #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoY(arrayExpr)
asmgen.out("""
lda $variablename,y
ldy #0
sta (${C64Zeropage.SCRATCH_W1}),y
""")
} else {
// TODO optimize more augmented assignment cases
val normalAssign = assign.asDesugaredNonaugmented()
asmgen.translateExpression(normalAssign.value)
assignFromEvalResult(normalAssign.target)
}
return true
}
is AddressOf -> throw AssemblyError("can't assign memory address to memory byte")
else -> {
fallbackAssignment(assign)
return true
}
}
return false // TODO optimized
}
private fun inplaceAssignToIdentifier(assign: Assignment): Boolean {
val targetType = assign.target.inferType(program, assign)
val constNumber = assign.value.constValue(program)?.number
val targetName = asmgen.asmIdentifierName(assign.target.identifier!!)
when (targetType.typeOrElse(DataType.STRUCT)) {
DataType.UBYTE, DataType.BYTE -> {
// (u)byte assignment
if (constNumber != null) {
val hexValue = constNumber.toHex()
when (assign.aug_op) {
"setvalue" -> asmgen.out(" lda #$hexValue | sta $targetName")
"+=" -> asmgen.out(" lda $targetName | clc | adc #$hexValue | sta $targetName")
"-=" -> asmgen.out(" lda $targetName | sec | sbc #$hexValue | sta $targetName")
"/=" -> TODO("variable /= const $hexValue")
"*=" -> TODO("variable *= const $hexValue")
"&=" -> asmgen.out(" lda $targetName | and #$hexValue | sta $targetName")
"|=" -> asmgen.out(" lda $targetName | ora #$hexValue | sta $targetName")
"^=" -> asmgen.out(" lda $targetName | eor #$hexValue | sta $targetName")
"%=" -> TODO("variable %= const $hexValue")
"<<=" -> throw AssemblyError("<<= should have been replaced by lsl()")
">>=" -> throw AssemblyError("<<= should have been replaced by lsr()")
else -> throw AssemblyError("invalid aug_op ${assign.aug_op}")
}
return true
}
// non-const (u)byte value
// !!! DON'T FORGET : CAN BE AUGMENTED ASSIGNMENT !!!
when (assign.value) {
is IdentifierReference -> {
val sourceName = asmgen.asmIdentifierName(assign.value as IdentifierReference)
when (assign.aug_op) {
"setvalue" -> asmgen.out(" lda $sourceName | sta $targetName")
"+=" -> asmgen.out(" lda $targetName | clc | adc $sourceName | sta $targetName")
"-=" -> asmgen.out(" lda $targetName | sec | sbc $sourceName | sta $targetName")
"/=" -> TODO("variable /= variable")
"*=" -> TODO("variable *= variable")
"&=" -> asmgen.out(" lda $targetName | and $sourceName | sta $targetName")
"|=" -> asmgen.out(" lda $targetName | ora $sourceName | sta $targetName")
"^=" -> asmgen.out(" lda $targetName | eor $sourceName | sta $targetName")
"%=" -> TODO("variable %= variable")
"<<=" -> throw AssemblyError("<<= should have been replaced by lsl()")
">>=" -> throw AssemblyError("<<= should have been replaced by lsr()")
else -> throw AssemblyError("invalid aug_op ${assign.aug_op}")
}
return true
}
is DirectMemoryRead -> {
TODO("variable = memory read $assign")
}
is ArrayIndexedExpression -> {
if (assign.aug_op == "setvalue") {
val arrayExpr = assign.value as ArrayIndexedExpression
val arrayIndex = arrayExpr.arrayspec.index
val variablename = asmgen.asmIdentifierName(arrayExpr.identifier)
val arrayDt = arrayExpr.identifier.inferType(program).typeOrElse(DataType.STRUCT)
if (arrayDt != DataType.ARRAY_B && arrayDt != DataType.ARRAY_UB && arrayDt != DataType.STR)
throw AssemblyError("assign to identifier: expected byte array or string source")
if (arrayIndex is NumericLiteralValue)
asmgen.out(" ldy #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoY(arrayExpr)
asmgen.out(" lda $variablename,y | sta $targetName")
} else {
// TODO optimize more augmented assignment cases
val normalAssign = assign.asDesugaredNonaugmented()
asmgen.translateExpression(normalAssign.value)
assignFromEvalResult(normalAssign.target)
}
return true
}
else -> {
fallbackAssignment(assign)
return true
}
}
}
DataType.UWORD, DataType.WORD -> {
if (constNumber != null) {
val hexNumber = constNumber.toHex()
when (assign.aug_op) {
"setvalue" -> {
asmgen.out("""
lda #<$hexNumber
sta $targetName
lda #>$hexNumber
sta $targetName+1
""")
}
"+=" -> {
asmgen.out("""
lda $targetName
clc
adc #<$hexNumber
sta $targetName
lda $targetName+1
adc #>$hexNumber
sta $targetName+1
""")
}
"-=" -> {
asmgen.out("""
lda $targetName
sec
sbc #<$hexNumber
sta $targetName
lda $targetName+1
sbc #>$hexNumber
sta $targetName+1
""")
}
else -> TODO("variable aug.assign ${assign.aug_op} const $hexNumber")
}
return true
}
// non-const value
// !!! DON'T FORGET : CAN BE AUGMENTED ASSIGNMENT !!!
when (assign.value) {
is IdentifierReference -> {
val sourceName = asmgen.asmIdentifierName(assign.value as IdentifierReference)
when (assign.aug_op) {
"setvalue" -> {
asmgen.out("""
lda $sourceName
sta $targetName
lda $sourceName+1
sta $targetName+1
""")
}
"+=" -> {
asmgen.out("""
lda $targetName
clc
adc $sourceName
sta $targetName
lda $targetName+1
adc $sourceName+1
sta $targetName+1
""")
return true
}
"-=" -> {
asmgen.out("""
lda $targetName
sec
sbc $sourceName
sta $targetName
lda $targetName+1
sbc $sourceName+1
sta $targetName+1
""")
return true
}
else -> {
TODO("variable aug.assign variable")
}
}
return true
}
is DirectMemoryRead -> throw AssemblyError("expected a typecast for assigning memory read byte to word")
is AddressOf -> {
val name = asmgen.asmIdentifierName((assign.value as AddressOf).identifier)
asmgen.out(" lda #<$name | sta $targetName | lda #>$name | sta $targetName+1")
return true
}
is ArrayIndexedExpression -> {
if (assign.aug_op == "setvalue") {
val arrayExpr = assign.value as ArrayIndexedExpression
val arrayIndex = arrayExpr.arrayspec.index
val variablename = asmgen.asmIdentifierName(arrayExpr.identifier)
val arrayDt = arrayExpr.identifier.inferType(program).typeOrElse(DataType.STRUCT)
if (arrayDt != DataType.ARRAY_W && arrayDt != DataType.ARRAY_UW)
throw AssemblyError("assign to identifier: expected word array source")
if (arrayIndex is NumericLiteralValue)
asmgen.out(" lda #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoA(arrayExpr)
asmgen.out("""
asl a
tay
lda $variablename,y
sta $targetName
lda $variablename+1,y
sta $targetName+1
""")
} else {
// TODO optimize more augmented assignment cases
val normalAssign = assign.asDesugaredNonaugmented()
asmgen.translateExpression(normalAssign.value)
assignFromEvalResult(normalAssign.target)
}
return true
}
else -> {
fallbackAssignment(assign)
return true
}
}
}
DataType.FLOAT -> {
if (constNumber != null) {
// assign a constant
val floatConst = asmgen.getFloatConst(constNumber.toDouble())
when (assign.aug_op) {
"setvalue" -> assignFromFloatConstant(assign.target, constNumber.toDouble())
"+=" -> {
if (constNumber == 0.5) {
asmgen.out("""
lda #<$targetName
ldy #>$targetName
jsr c64flt.MOVFM
jsr c64flt.FADDH
stx c64.SCRATCH_ZPREGX
ldx #<$targetName
ldy #>$targetName
jsr c64flt.MOVMF
ldx c64.SCRATCH_ZPREGX
""")
} else {
asmgen.out("""
lda #<$targetName
ldy #>$targetName
jsr c64flt.MOVFM
lda #<$floatConst
ldy #>$floatConst
jsr c64flt.FADD
stx c64.SCRATCH_ZPREGX
ldx #<$targetName
ldy #>$targetName
jsr c64flt.MOVMF
ldx c64.SCRATCH_ZPREGX
""")
}
return true
}
"-=" -> {
asmgen.out("""
lda #<$floatConst
ldy #>$floatConst
jsr c64flt.MOVFM
lda #<$targetName
ldy #>$targetName
jsr c64flt.FSUB
stx c64.SCRATCH_ZPREGX
ldx #<$targetName
ldy #>$targetName
jsr c64flt.MOVMF
ldx c64.SCRATCH_ZPREGX
""")
return true
}
else -> TODO("float const value aug.assign $assign")
}
return true
}
// non-const float value.
// !!! DON'T FORGET : CAN BE AUGMENTED ASSIGNMENT !!!
when (assign.value) {
is IdentifierReference -> {
when (assign.aug_op) {
"setvalue" -> assignFromFloatVariable(assign.target, assign.value as IdentifierReference)
"+=" -> return false // TODO optimized float += variable
"-=" -> return false // TODO optimized float -= variable
else -> TODO("float non-const value aug.assign $assign")
}
return true
}
is ArrayIndexedExpression -> {
when(assign.aug_op) {
"setvalue" -> {
val arrayExpr = assign.value as ArrayIndexedExpression
val arrayIndex = arrayExpr.arrayspec.index
val variablename = asmgen.asmIdentifierName(arrayExpr.identifier)
val arrayDt = arrayExpr.identifier.inferType(program).typeOrElse(DataType.STRUCT)
if (arrayDt != DataType.ARRAY_F)
throw AssemblyError("assign to identifier: expected float array source")
if (arrayIndex is NumericLiteralValue)
asmgen.out(" lda #${arrayIndex.number.toHex()}")
else
asmgen.translateArrayIndexIntoA(arrayExpr)
asmgen.out("""
sta c64.SCRATCH_ZPB1
asl a
asl a
clc
adc c64.SCRATCH_ZPB1
tay
lda $variablename,y
sta $targetName
lda $variablename+1,y
sta $targetName+1
lda $variablename+2,y
sta $targetName+2
lda $variablename+3,y
sta $targetName+3
lda $variablename+4,y
sta $targetName+4
""")
}
else -> TODO("float $assign")
}
return true
}
else -> {
fallbackAssignment(assign)
return true
}
}
}
DataType.STR -> {
val identifier = assign.value as? IdentifierReference
?: throw AssemblyError("string value assignment expects identifier value")
val sourceName = asmgen.asmIdentifierName(identifier)
asmgen.out("""
lda #<$targetName
sta ${C64Zeropage.SCRATCH_W1}
lda #>$targetName
sta ${C64Zeropage.SCRATCH_W1+1}
lda #<$sourceName
ldy #>$sourceName
jsr prog8_lib.strcpy
""")
return true
}
else -> throw AssemblyError("assignment to identifier: invalid target datatype: $targetType")
}
return false
}
private fun fallbackAssignment(assign: Assignment) {
if (assign.aug_op != "setvalue") {
/* stack-based evaluation of the expression is required */
val normalAssign = assign.asDesugaredNonaugmented()
asmgen.translateExpression(normalAssign.value)
assignFromEvalResult(normalAssign.target)
} else {
when (assign.value) {
is FunctionCall -> {
// TODO is there a way to avoid function return value being passed via the stack?
// for instance, 1 byte return value always in A, etc
val normalAssign = assign.asDesugaredNonaugmented()
asmgen.translateExpression(normalAssign.value)
assignFromEvalResult(normalAssign.target)
}
else -> {
/* stack-based evaluation of the expression is required */
val normalAssign = assign.asDesugaredNonaugmented()
asmgen.translateExpression(normalAssign.value)
assignFromEvalResult(normalAssign.target)
}
}
}
}
// old code-generation below:
// eventually, all of this should have been replaced by newer more optimized code above.
// eventually, all of this should have been replaced by newer more optimized code.
private fun translateNormalAssignment(assign: Assignment) {
require(assign.aug_op == null)
when (assign.value) {
is NumericLiteralValue -> {
val numVal = assign.value as NumericLiteralValue

9
compiler/src/prog8/compiler/target/c64/codegen/ForLoopsAsmGen.kt
View File

@ -116,8 +116,7 @@ $endLabel inx""")
stepsize == 1 || stepsize == -1 -> {
asmgen.translateExpression(range.to)
val varname = asmgen.asmIdentifierName(stmt.loopVar)
val assignLoopvar = Assignment(AssignTarget(stmt.loopVar, null, null, stmt.loopVar.position),
null, range.from, range.position)
val assignLoopvar = Assignment(AssignTarget(stmt.loopVar, null, null, stmt.loopVar.position), range.from, range.position)
assignLoopvar.linkParents(stmt)
asmgen.translate(assignLoopvar)
asmgen.out(loopLabel)
@ -152,8 +151,7 @@ $endLabel inx""")
asmgen.translateExpression(range.to)
val varname = asmgen.asmIdentifierName(stmt.loopVar)
val assignLoopvar = Assignment(AssignTarget(stmt.loopVar, null, null, stmt.loopVar.position),
null, range.from, range.position)
val assignLoopvar = Assignment(AssignTarget(stmt.loopVar, null, null, stmt.loopVar.position), range.from, range.position)
assignLoopvar.linkParents(stmt)
asmgen.translate(assignLoopvar)
asmgen.out(loopLabel)
@ -201,8 +199,7 @@ $endLabel inx""")
// (u)words, step <= -2
asmgen.translateExpression(range.to)
val varname = asmgen.asmIdentifierName(stmt.loopVar)
val assignLoopvar = Assignment(AssignTarget(stmt.loopVar, null, null, stmt.loopVar.position),
null, range.from, range.position)
val assignLoopvar = Assignment(AssignTarget(stmt.loopVar, null, null, stmt.loopVar.position), range.from, range.position)
assignLoopvar.linkParents(stmt)
asmgen.translate(assignLoopvar)
asmgen.out(loopLabel)

1390
compiler/src/prog8/compiler/target/c64/codegen/InplaceAssignmentAsmGen.kt Normal file
View File

File diff suppressed because it is too large Load Diff

29
compiler/src/prog8/optimizer/AssignmentTransformer.kt
View File

@ -9,6 +9,7 @@ import prog8.ast.processing.IAstModification
import prog8.ast.statements.Assignment
import prog8.ast.statements.PostIncrDecr
// TODO integrate this in the StatementOptimizer
internal class AssignmentTransformer(val program: Program, val errors: ErrorReporter) : AstWalker() {
@ -17,23 +18,16 @@ internal class AssignmentTransformer(val program: Program, val errors: ErrorRepo
private val noModifications = emptyList<IAstModification>()
override fun before(assignment: Assignment, parent: Node): Iterable<IAstModification> {
// modify A = A + 5 back into augmented form A += 5 for easier code generation for optimized in-place assignments
// also to put code generation stuff together, single value assignment (A = 5) is converted to a special
// augmented form as wel (with the operator "setvalue")
if (assignment.aug_op == null) {
val binExpr = assignment.value as? BinaryExpression
if (binExpr != null) {
if (assignment.target.isSameAs(binExpr.left)) {
assignment.value = binExpr.right
assignment.aug_op = binExpr.operator + "="
assignment.value.parent = assignment
optimizationsDone++
return noModifications
}
}
assignment.aug_op = "setvalue"
optimizationsDone++
} else if(assignment.aug_op == "+=") {
if(assignment.target isSameAs assignment.value) {
TODO("remove assignment to self")
}
return noModifications
// TODO add these optimizations back:
/*
if(assignment.aug_op == "+=") {
val binExpr = assignment.value as? BinaryExpression
if (binExpr != null) {
val leftnum = binExpr.left.constValue(program)?.number?.toDouble()
@ -153,5 +147,6 @@ internal class AssignmentTransformer(val program: Program, val errors: ErrorRepo
}
}
return noModifications
*/
}
}

6
compiler/src/prog8/optimizer/ExpressionSimplifier.kt
View File

@ -24,12 +24,6 @@ internal class ExpressionSimplifier(private val program: Program) : AstWalker()
private val negativePowersOfTwo = powersOfTwo.map { -it }.toSet()
private val noModifications = emptyList<IAstModification>()
override fun after(assignment: Assignment, parent: Node): Iterable<IAstModification> {
if (assignment.aug_op != null)
throw FatalAstException("augmented assignments should have been converted to normal assignments before this optimizer: $assignment")
return noModifications
}
override fun after(typecast: TypecastExpression, parent: Node): Iterable<IAstModification> {
val mods = mutableListOf<IAstModification>()

10
compiler/src/prog8/optimizer/StatementOptimizer.kt
View File

@ -211,7 +211,7 @@ internal class StatementOptimizer(private val program: Program,
// for loop over a (constant) range of just a single value-- optimize the loop away
// loopvar/reg = range value , follow by block
val scope = AnonymousScope(mutableListOf(), forLoop.position)
scope.statements.add(Assignment(AssignTarget(forLoop.loopVar, null, null, forLoop.position), null, range.from, forLoop.position))
scope.statements.add(Assignment(AssignTarget(forLoop.loopVar, null, null, forLoop.position), range.from, forLoop.position))
scope.statements.addAll(forLoop.body.statements)
return listOf(IAstModification.ReplaceNode(forLoop, scope, parent))
}
@ -226,7 +226,7 @@ internal class StatementOptimizer(private val program: Program,
val character = CompilationTarget.encodeString(sv.value, sv.altEncoding)[0]
val byte = NumericLiteralValue(DataType.UBYTE, character, iterable.position)
val scope = AnonymousScope(mutableListOf(), forLoop.position)
scope.statements.add(Assignment(AssignTarget(forLoop.loopVar, null, null, forLoop.position), null, byte, forLoop.position))
scope.statements.add(Assignment(AssignTarget(forLoop.loopVar, null, null, forLoop.position), byte, forLoop.position))
scope.statements.addAll(forLoop.body.statements)
return listOf(IAstModification.ReplaceNode(forLoop, scope, parent))
}
@ -239,7 +239,7 @@ internal class StatementOptimizer(private val program: Program,
if(av!=null) {
val scope = AnonymousScope(mutableListOf(), forLoop.position)
scope.statements.add(Assignment(
AssignTarget(forLoop.loopVar, null, null, forLoop.position), null, NumericLiteralValue.optimalInteger(av.toInt(), iterable.position),
AssignTarget(forLoop.loopVar, null, null, forLoop.position), NumericLiteralValue.optimalInteger(av.toInt(), iterable.position),
forLoop.position))
scope.statements.addAll(forLoop.body.statements)
return listOf(IAstModification.ReplaceNode(forLoop, scope, parent))
@ -325,9 +325,6 @@ internal class StatementOptimizer(private val program: Program,
}
override fun after(assignment: Assignment, parent: Node): Iterable<IAstModification> {
if(assignment.aug_op!=null)
throw FatalAstException("augmented assignments should have been converted to normal assignments before this optimizer: $assignment")
// remove assignments to self
if(assignment.target isSameAs assignment.value) {
if(assignment.target.isNotMemory(program.namespace))
@ -338,7 +335,6 @@ internal class StatementOptimizer(private val program: Program,
if(!targetIDt.isKnown)
throw FatalAstException("can't infer type of assignment target")
// optimize binary expressions a bit
val targetDt = targetIDt.typeOrElse(DataType.STRUCT)
val bexpr=assignment.value as? BinaryExpression

3
examples/line-circle-gfx.p8
View File

@ -1,9 +1,6 @@
%import c64lib
%import c64graphics
; TODO fix compiler errors when compiling without optimizations
main {
sub start() {

3
examples/mandelbrot-gfx.p8
View File

@ -7,9 +7,6 @@
; NOTE: this will take an eternity to draw on a real c64.
; even in Vice in warp mode (700% speed on my machine) it's slow, but you can see progress
; TODO fix compiler errors when compiling without optimizations
main {
const ubyte width = 255
const ubyte height = 200

3
examples/structs.p8
View File

@ -1,9 +1,6 @@
%import c64utils
%zeropage basicsafe
; TODO fix compiler errors when compiling without optimization ( /= )
main {
struct Color {

2
examples/turtle-gfx.p8
View File

@ -3,8 +3,6 @@
%import c64graphics
%option enable_floats
; TODO fix compiler errors when compiling without optimizations
main {
sub start() {