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preparing to fix the array indexing compiler issue
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Irmen de Jong
parent
7b6cd0cfbe
commit
e9a4a905ef
@ -1840,7 +1840,7 @@ internal class AugmentableAssignmentAsmGen(private val program: Program,
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}
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}
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TargetStorageKind.STACK -> TODO("no asm gen for byte stack invert")
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else -> throw AssemblyError("no asm gen for in-place invert ubyte for ${target.kind}")
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else -> TODO("no asm gen for in-place invert ubyte for ${target.kind}")
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}
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}
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DataType.UWORD -> {
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@ -1864,7 +1864,7 @@ internal class AugmentableAssignmentAsmGen(private val program: Program,
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}
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}
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TargetStorageKind.STACK -> TODO("no asm gen for word stack invert")
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else -> throw AssemblyError("no asm gen for in-place invert uword for ${target.kind}")
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else -> TODO("no asm gen for in-place invert uword for ${target.kind}")
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}
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}
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else -> throw AssemblyError("invert of invalid type")
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@ -1898,7 +1898,7 @@ internal class AugmentableAssignmentAsmGen(private val program: Program,
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}
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TargetStorageKind.MEMORY -> throw AssemblyError("memory is ubyte, can't in-place negate")
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TargetStorageKind.STACK -> TODO("no asm gen for byte stack negate")
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else -> throw AssemblyError("no asm gen for in-place negate byte")
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else -> TODO("no asm gen for in-place negate byte")
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}
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}
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DataType.WORD -> {
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@ -1956,7 +1956,7 @@ internal class AugmentableAssignmentAsmGen(private val program: Program,
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}
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}
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TargetStorageKind.STACK -> TODO("no asm gen for word stack negate")
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else -> throw AssemblyError("no asm gen for in-place negate word")
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else -> TODO("no asm gen for in-place negate word")
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}
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}
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DataType.FLOAT -> {
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@ -1970,7 +1970,7 @@ internal class AugmentableAssignmentAsmGen(private val program: Program,
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""")
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}
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TargetStorageKind.STACK -> TODO("no asm gen for float stack negate")
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else -> throw AssemblyError("weird target kind for inplace negate float ${target.kind}")
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else -> TODO("no asmgen for inplace negate float ${target.kind}")
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}
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}
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else -> throw AssemblyError("negate of invalid type $dt")
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@ -16,11 +16,35 @@ import prog8.code.target.VMTarget
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internal class AstOnetimeTransforms(private val program: Program, private val options: CompilationOptions) : AstWalker() {
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override fun after(assignment: Assignment, parent: Node): Iterable<IAstModification> {
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if(options.compTarget.name != VMTarget.NAME) {
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// The 6502 code-gen doesn't contain code to deal with arr[0] = -arr[0] and arr[0] = ~arr[0].
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// Replace this by assignment, operation, assignment.
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// TODO make the codegen better so this work around can be removed
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// if (assignment.isAugmentable) {
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// val arrayIdx = assignment.target.arrayindexed
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// if (arrayIdx != null) {
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// val prefixed = assignment.value as? PrefixExpression
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// if (prefixed != null) {
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// println("array self-assignment, operator = ${prefixed.operator}")
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// if (prefixed.operator == "-") {
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// TODO("array in-place -")
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// } else if (prefixed.operator == "~") {
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// TODO("array in-place ~")
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// }
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// }
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// }
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// }
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}
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return noModifications
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}
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override fun after(arrayIndexedExpression: ArrayIndexedExpression, parent: Node): Iterable<IAstModification> {
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if(parent !is VarDecl) {
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// TODO move this / remove this, and make the codegen better instead.
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// If the expression is pointervar[idx] where pointervar is uword and not a real array,
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// replace it by a @(pointervar+idx) expression.
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if(options.compTarget.name == VMTarget.NAME)
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return noModifications // vm codegen deals correctly with all cases
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// Don't replace the initializer value in a vardecl - this will be moved to a separate
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// assignment statement soon in after(VarDecl)
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return replacePointerVarIndexWithMemreadOrMemwrite(arrayIndexedExpression, parent)
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@ -29,15 +53,16 @@ internal class AstOnetimeTransforms(private val program: Program, private val op
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}
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private fun replacePointerVarIndexWithMemreadOrMemwrite(arrayIndexedExpression: ArrayIndexedExpression, parent: Node): Iterable<IAstModification> {
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if(options.compTarget.name==VMTarget.NAME)
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return noModifications // vm codegen deals correctly with all cases
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// note: The CodeDesugarer already does something similar, but that is meant ONLY to take
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// into account the case where the index value is a word type.
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// The replacement here is to fix missing cases in the 6502 codegen.
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// TODO make the 6502 codegen better so this work around can be removed
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val arrayVar = arrayIndexedExpression.arrayvar.targetVarDecl(program)
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if(arrayVar!=null && arrayVar.datatype == DataType.UWORD) {
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if(parent is AssignTarget) {
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val assignment = parent.parent as? Assignment
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if(assignment?.value is NumericLiteral || assignment?.value is IdentifierReference) {
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// ONLY for a constant assignment, or direct variable assignment, the codegen contains correct optimized code.
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// the codegen contains correct optimized code ONLY for a constant assignment, or direct variable assignment.
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return noModifications
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}
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// Other cases aren't covered correctly by the 6502 codegen, and there are a LOT of cases.
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@ -10,8 +10,7 @@ import prog8.code.core.IErrorReporter
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import prog8.code.core.Position
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internal class CodeDesugarer(val program: Program,
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private val errors: IErrorReporter) : AstWalker() {
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internal class CodeDesugarer(val program: Program, private val errors: IErrorReporter) : AstWalker() {
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// Some more code shuffling to simplify the Ast that the codegenerator has to process.
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// Several changes have already been done by the StatementReorderer !
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@ -138,7 +137,8 @@ _after:
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}
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override fun after(arrayIndexedExpression: ArrayIndexedExpression, parent: Node): Iterable<IAstModification> {
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// replace pointervar[word] by @(pointervar+word)
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// replace pointervar[word] by @(pointervar+word) to avoid the
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// "array indexing is limited to byte size 0..255" error for pointervariables.
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val indexExpr = arrayIndexedExpression.indexer.indexExpr
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val indexerDt = indexExpr.inferType(program)
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if(indexerDt.isWords) {
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@ -3,6 +3,12 @@ TODO
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For next release
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^^^^^^^^^^^^^^^^
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- improve prefix expression codgen in AssignmentAsmGen.assignExpression():
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don't do this for complex assign targets such as array elements: "first assign the value to the target then apply the operator in place on the target."
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this triggers foo[x] = -b to be a 2-step assignment with array in-place modification...
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- fix the array in place assignment issue, see AstOnetimeTransforms
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- ir: asmsub contents remains blank in IR file
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...
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@ -1,45 +1,37 @@
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%import textio
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%import math
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%import floats
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%import textio
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%zeropage basicsafe
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main {
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byte[10] foo
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ubyte[10] foou
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word[10] foow
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uword[10] foowu
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float[10] flt
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byte d
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sub printnumbers() {
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txt.print_ub(math.rnd())
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txt.spc()
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txt.print_ub(math.rnd())
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txt.spc()
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txt.print_ub(math.rnd())
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txt.nl()
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txt.print_uw(math.rndw())
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txt.spc()
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txt.print_uw(math.rndw())
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txt.spc()
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txt.print_uw(math.rndw())
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txt.nl()
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floats.print_f(floats.rndf())
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txt.spc()
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floats.print_f(floats.rndf())
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txt.spc()
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floats.print_f(floats.rndf())
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txt.nl()
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}
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sub start() {
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; foo[0] = -d ; TODO fix codegen in assignExpression that splits this up
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uword pointer = $1000
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uword index
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foou[1] = 42
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pointer[$40] = 24
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pointer[$40] = foou[1]+10
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txt.print_ub(@($1040))
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txt.nl()
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pointer[index+$100] = foou[1]
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pointer[index+$1000] = foou[1]+1
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txt.print_ub(@($1100))
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txt.nl()
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txt.print_ub(@($2000))
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txt.nl()
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sub start() {
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txt.print("initial:\n")
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math.rndseed($a55a, $7653)
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floats.rndseedf(11,22,33)
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printnumbers()
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txt.print("\nsame seeds:\n")
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math.rndseed($a55a, $7653)
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floats.rndseedf(11,22,33)
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printnumbers()
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txt.print("\ndifferent seeds:\n")
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math.rndseed($1234, $5678)
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floats.rndseedf(44,55,66)
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printnumbers()
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txt.nl()
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}
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; foo[0] = -foo[0]
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; foou[0] = ~foou[0]
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; foow[0] = -foow[0]
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; foowu[0] = ~foowu[0]
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; flt[0] = -flt[0] ; TODO also fix crash when selecting vm target: fpReg1 out of bounds
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}
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}
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