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fix: don't initialize block vars twice, fix: make sure the prog8_init_vars generated routine is correctly called when needed
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@ -48,6 +48,7 @@ class AsmGen(private val program: Program,
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internal val loopEndLabels = ArrayDeque<String>()
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internal val loopEndLabels = ArrayDeque<String>()
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internal val slabs = mutableMapOf<String, Int>()
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internal val slabs = mutableMapOf<String, Int>()
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internal val removals = mutableListOf<Pair<Statement, IStatementContainer>>()
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internal val removals = mutableListOf<Pair<Statement, IStatementContainer>>()
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private val blockVariableInitializers = program.allBlocks.associateWith { it.statements.filterIsInstance<Assignment>() }
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override fun compileToAssembly(): IAssemblyProgram {
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override fun compileToAssembly(): IAssemblyProgram {
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assemblyLines.clear()
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assemblyLines.clear()
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@ -59,8 +60,11 @@ class AsmGen(private val program: Program,
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val allBlocks = program.allBlocks
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val allBlocks = program.allBlocks
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if(allBlocks.first().name != "main")
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if(allBlocks.first().name != "main")
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throw AssemblyError("first block should be 'main'")
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throw AssemblyError("first block should be 'main'")
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for(b in program.allBlocks)
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for(b in program.allBlocks) {
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b.statements.removeAll(blockVariableInitializers.getValue(b)) // no longer output the initialization assignments as regular statements in the block!
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block2asm(b)
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block2asm(b)
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}
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for(removal in removals.toList()) {
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for(removal in removals.toList()) {
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removal.second.remove(removal.first)
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removal.second.remove(removal.first)
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@ -218,7 +222,7 @@ class AsmGen(private val program: Program,
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subroutine.forEach { translateSubroutine(it as Subroutine) }
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subroutine.forEach { translateSubroutine(it as Subroutine) }
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// generate subroutine to initialize block-level variables
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// generate subroutine to initialize block-level variables
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val initializers = block.statements.filterIsInstance<Assignment>()
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val initializers = blockVariableInitializers.getValue(block)
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if(initializers.isNotEmpty()) {
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if(initializers.isNotEmpty()) {
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out("prog8_init_vars\t.proc\n")
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out("prog8_init_vars\t.proc\n")
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initializers.forEach { assign -> translate(assign) }
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initializers.forEach { assign -> translate(assign) }
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@ -894,9 +898,9 @@ class AsmGen(private val program: Program,
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if(sub.name=="start" && sub.definingBlock.name=="main") {
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if(sub.name=="start" && sub.definingBlock.name=="main") {
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out("; program startup initialization")
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out("; program startup initialization")
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out(" cld")
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out(" cld")
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program.allBlocks.forEach {
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blockVariableInitializers.forEach {
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if(it.statements.any { stmt -> stmt is Assignment })
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if(it.value.isNotEmpty())
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out(" jsr ${it.name}.prog8_init_vars")
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out(" jsr ${it.key.name}.prog8_init_vars")
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}
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}
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out("""
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out("""
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tsx
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tsx
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