mirror of
https://github.com/irmen/prog8.git
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427 lines
18 KiB
Kotlin
427 lines
18 KiB
Kotlin
package prog8tests
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import io.kotest.assertions.fail
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import io.kotest.assertions.withClue
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import io.kotest.core.spec.style.FunSpec
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import io.kotest.matchers.shouldBe
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import io.kotest.matchers.shouldNotBe
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import io.kotest.matchers.types.instanceOf
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import io.kotest.matchers.types.shouldBeSameInstanceAs
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import prog8.ast.Program
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import prog8.ast.base.DataType
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import prog8.ast.base.ParentSentinel
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import prog8.ast.base.Position
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import prog8.ast.expressions.*
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import prog8.ast.statements.*
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import prog8.compiler.BeforeAsmGenerationAstChanger
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import prog8.compiler.target.C64Target
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import prog8.compilerinterface.*
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import prog8tests.helpers.DummyFunctions
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import prog8tests.helpers.DummyMemsizer
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import prog8tests.helpers.DummyStringEncoder
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import prog8tests.helpers.ErrorReporterForTests
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import prog8tests.helpers.assertSuccess
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import prog8tests.helpers.compileText
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import prog8tests.helpers.generateAssembly
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class TestOptimization: FunSpec({
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test("remove empty subroutine except start") {
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val sourcecode = """
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main {
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sub start() {
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}
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sub empty() {
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; going to be removed
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}
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}
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"""
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val result = compileText(C64Target, true, sourcecode).assertSuccess()
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val toplevelModule = result.program.toplevelModule
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val mainBlock = toplevelModule.statements.single() as Block
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val startSub = mainBlock.statements.single() as Subroutine
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result.program.entrypoint shouldBeSameInstanceAs startSub
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withClue("only start sub should remain") {
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startSub.name shouldBe "start"
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}
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withClue("compiler has inserted return in empty subroutines") {
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startSub.statements.single() shouldBe instanceOf<Return>()
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}
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}
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test("don't remove empty subroutine if it's referenced") {
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val sourcecode = """
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main {
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sub start() {
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uword xx = &empty
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xx++
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}
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sub empty() {
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; should not be removed
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}
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}
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"""
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val result = compileText(C64Target, true, sourcecode).assertSuccess()
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val toplevelModule = result.program.toplevelModule
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val mainBlock = toplevelModule.statements.single() as Block
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val startSub = mainBlock.statements[0] as Subroutine
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val emptySub = mainBlock.statements[1] as Subroutine
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result.program.entrypoint shouldBeSameInstanceAs startSub
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startSub.name shouldBe "start"
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emptySub.name shouldBe "empty"
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withClue("compiler has inserted return in empty subroutines") {
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emptySub.statements.single() shouldBe instanceOf<Return>()
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}
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}
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test("generated constvalue inherits proper parent linkage") {
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val number = NumericLiteralValue(DataType.UBYTE, 11.0, Position.DUMMY)
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val tc = TypecastExpression(number, DataType.BYTE, false, Position.DUMMY)
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val program = Program("test", DummyFunctions, DummyMemsizer, DummyStringEncoder)
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tc.linkParents(ParentSentinel)
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tc.parent shouldNotBe null
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number.parent shouldNotBe null
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tc shouldBeSameInstanceAs number.parent
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val constvalue = tc.constValue(program)!!
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constvalue shouldBe instanceOf<NumericLiteralValue>()
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constvalue.number.toInt() shouldBe 11
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constvalue.type shouldBe DataType.BYTE
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tc shouldBeSameInstanceAs constvalue.parent
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}
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test("constantfolded and silently typecasted for initializervalues") {
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val sourcecode = """
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main {
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sub start() {
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const ubyte TEST = 10
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byte @shared x1 = TEST as byte + 1
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byte @shared x2 = 1 + TEST as byte
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ubyte @shared y1 = TEST + 1 as byte
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ubyte @shared y2 = 1 as byte + TEST
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}
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}
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"""
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val result = compileText(C64Target, true, sourcecode).assertSuccess()
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val mainsub = result.program.entrypoint
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mainsub.statements.size shouldBe 10
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val declTest = mainsub.statements[0] as VarDecl
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val declX1 = mainsub.statements[1] as VarDecl
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val initX1 = mainsub.statements[2] as Assignment
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val declX2 = mainsub.statements[3] as VarDecl
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val initX2 = mainsub.statements[4] as Assignment
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val declY1 = mainsub.statements[5] as VarDecl
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val initY1 = mainsub.statements[6] as Assignment
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val declY2 = mainsub.statements[7] as VarDecl
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val initY2 = mainsub.statements[8] as Assignment
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mainsub.statements[9] shouldBe instanceOf<Return>()
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(declTest.value as NumericLiteralValue).number.toDouble() shouldBe 10.0
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declX1.value shouldBe null
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declX2.value shouldBe null
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declY1.value shouldBe null
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declY2.value shouldBe null
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(initX1.value as NumericLiteralValue).type shouldBe DataType.BYTE
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(initX1.value as NumericLiteralValue).number.toDouble() shouldBe 11.0
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(initX2.value as NumericLiteralValue).type shouldBe DataType.BYTE
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(initX2.value as NumericLiteralValue).number.toDouble() shouldBe 11.0
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(initY1.value as NumericLiteralValue).type shouldBe DataType.UBYTE
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(initY1.value as NumericLiteralValue).number.toDouble() shouldBe 11.0
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(initY2.value as NumericLiteralValue).type shouldBe DataType.UBYTE
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(initY2.value as NumericLiteralValue).number.toDouble() shouldBe 11.0
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}
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test("typecasted assignment from ubyte logical expressoin to uword var") {
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val src = """
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main {
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sub start() {
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ubyte bb
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uword ww
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ww = not bb or not ww ; expression combining ubyte and uword
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}
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}
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"""
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val result = compileText(C64Target, false, src, writeAssembly = false).assertSuccess()
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// ww = ((( not bb as uword) or not ww) as uword)
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val wwAssign = result.program.entrypoint.statements.last() as Assignment
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val expr = wwAssign.value as TypecastExpression
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wwAssign.target.identifier?.nameInSource shouldBe listOf("ww")
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expr.type shouldBe DataType.UWORD
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expr.expression.inferType(result.program).istype(DataType.UBYTE) shouldBe true
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}
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test("intermediate assignment steps have correct types for codegen phase (BeforeAsmGenerationAstChanger)") {
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val src = """
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main {
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sub start() {
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ubyte bb
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uword ww
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bb = not bb or not ww ; expression combining ubyte and uword
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}
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}
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"""
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val result = compileText(C64Target, false, src, writeAssembly = false).assertSuccess()
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// bb = (( not bb as uword) or not ww)
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val bbAssign = result.program.entrypoint.statements.last() as Assignment
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val expr = bbAssign.value as BinaryExpression
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expr.operator shouldBe "or"
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expr.left shouldBe instanceOf<TypecastExpression>() // casted to word
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expr.right shouldBe instanceOf<PrefixExpression>()
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expr.left.inferType(result.program).getOrElse { fail("dt") } shouldBe DataType.UWORD
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expr.right.inferType(result.program).getOrElse { fail("dt") } shouldBe DataType.UWORD
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expr.inferType(result.program).getOrElse { fail("dt") } shouldBe DataType.UBYTE
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val options = CompilationOptions(OutputType.RAW, LauncherType.NONE, ZeropageType.DONTUSE, emptyList(), false, true, C64Target)
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val changer = BeforeAsmGenerationAstChanger(result.program,
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options,
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ErrorReporterForTests()
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)
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changer.visit(result.program)
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while(changer.applyModifications()>0) {
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changer.visit(result.program)
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}
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// assignment is now split into:
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// bb = not bb
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// bb = (bb or not ww)
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val assigns = result.program.entrypoint.statements.filterIsInstance<Assignment>()
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val bbAssigns = assigns.filter { it.value !is NumericLiteralValue }
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bbAssigns.size shouldBe 2
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bbAssigns[0].target.identifier!!.nameInSource shouldBe listOf("bb")
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bbAssigns[0].value shouldBe instanceOf<PrefixExpression>()
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(bbAssigns[0].value as PrefixExpression).operator shouldBe "not"
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(bbAssigns[0].value as PrefixExpression).expression shouldBe IdentifierReference(listOf("bb"), Position.DUMMY)
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bbAssigns[0].value.inferType(result.program).getOrElse { fail("dt") } shouldBe DataType.UBYTE
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bbAssigns[1].target.identifier!!.nameInSource shouldBe listOf("bb")
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val bbAssigns1expr = bbAssigns[1].value as BinaryExpression
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bbAssigns1expr.operator shouldBe "or"
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bbAssigns1expr.left shouldBe IdentifierReference(listOf("bb"), Position.DUMMY)
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bbAssigns1expr.right shouldBe instanceOf<PrefixExpression>()
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(bbAssigns1expr.right as PrefixExpression).operator shouldBe "not"
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(bbAssigns1expr.right as PrefixExpression).expression shouldBe IdentifierReference(listOf("ww"), Position.DUMMY)
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bbAssigns1expr.inferType(result.program).getOrElse { fail("dt") } shouldBe DataType.UBYTE
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val asm = generateAssembly(result.program, options)
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asm.valid shouldBe true
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}
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test("intermediate assignment steps generated for typecasted expression") {
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val src = """
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main {
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sub start() {
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ubyte r
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ubyte @shared bb = (cos8(r)/2 + 100) as ubyte
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}
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}
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"""
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val result = compileText(C64Target, true, src, writeAssembly = true).assertSuccess()
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/* turned into:
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ubyte r
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r = 0
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ubyte bb
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prog8_lib.retval_interm_b = cos8(r)
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prog8_lib.retval_interm_b >>= 1
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prog8_lib.retval_interm_b += 100
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bb = prog8_lib.retval_interm_b
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return
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*/
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val st = result.program.entrypoint.statements
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st.size shouldBe 8
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st.last() shouldBe instanceOf<Return>()
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var assign = st[3] as Assignment
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assign.target.identifier!!.nameInSource shouldBe listOf("prog8_lib","retval_interm_b")
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assign = st[4] as Assignment
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assign.target.identifier!!.nameInSource shouldBe listOf("prog8_lib","retval_interm_b")
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assign = st[5] as Assignment
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assign.target.identifier!!.nameInSource shouldBe listOf("prog8_lib","retval_interm_b")
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assign = st[6] as Assignment
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assign.target.identifier!!.nameInSource shouldBe listOf("bb")
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}
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test("asmgen correctly deals with float typecasting in augmented assignment") {
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val src="""
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%option enable_floats
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main {
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sub start() {
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ubyte ub
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float ff = 1.0
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ff += (ub as float) ; operator doesn't matter
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}
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}
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"""
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val result = compileText(C64Target, optimize=false, src, writeAssembly = false).assertSuccess()
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val assignFF = result.program.entrypoint.statements.last() as Assignment
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assignFF.isAugmentable shouldBe true
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assignFF.target.identifier!!.nameInSource shouldBe listOf("ff")
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val value = assignFF.value as BinaryExpression
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value.operator shouldBe "+"
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value.left shouldBe IdentifierReference(listOf("ff"), Position.DUMMY)
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value.right shouldBe instanceOf<TypecastExpression>()
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val asm = generateAssembly(result.program)
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asm.valid shouldBe true
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}
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test("unused variable removal") {
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val src="""
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main {
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sub start() {
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ubyte unused
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ubyte @shared unused_but_shared ; this one should remain
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ubyte usedvar_only_written
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usedvar_only_written=2
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usedvar_only_written++
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ubyte usedvar ; and this one too
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usedvar = msb(usedvar)
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}
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}
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"""
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val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
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result.program.entrypoint.statements.size shouldBe 4 // unused_but_shared decl, unused_but_shared=0, usedvar decl, usedvar assign
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val (decl, assign, decl2, assign2) = result.program.entrypoint.statements
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decl shouldBe instanceOf<VarDecl>()
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(decl as VarDecl).name shouldBe "unused_but_shared"
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assign shouldBe instanceOf<Assignment>()
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decl2 shouldBe instanceOf<VarDecl>()
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(decl2 as VarDecl).name shouldBe "usedvar"
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assign2 shouldBe instanceOf<Assignment>()
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}
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test("unused variable removal from subscope") {
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val src="""
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main {
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sub start() {
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if cx16.r0 {
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uword xx = 42 ; to be removed
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xx=99 ; to be removed
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cx16.r0 = 0
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}
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func2()
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sub func2() {
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uword yy = 33 ; to be removed
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yy=99 ; to be removed
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cx16.r0 = 0
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}
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}
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}"""
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val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
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result.program.entrypoint.statements.size shouldBe 3
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val ifstmt = result.program.entrypoint.statements[0] as IfStatement
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ifstmt.truepart.statements.size shouldBe 1
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(ifstmt.truepart.statements[0] as Assignment).target.identifier!!.nameInSource shouldBe listOf("cx16", "r0")
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val func2 = result.program.entrypoint.statements[2] as Subroutine
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func2.statements.size shouldBe 1
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(func2.statements[0] as Assignment).target.identifier!!.nameInSource shouldBe listOf("cx16", "r0")
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}
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test("test simple augmented assignment optimization correctly initializes all variables") {
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val src="""
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main {
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sub start() {
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ubyte @shared z1
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z1 = 10
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ubyte @shared z2
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z2 = z1+z2+5
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ubyte @shared z3
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z3 = z1+z3-5
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}
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}"""
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val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
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/* expected:
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ubyte z1
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z1 = 10
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ubyte z2
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z2 = z1
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z2 += 5
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ubyte z3
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z3 = z1
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z3 -= 5
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*/
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val statements = result.program.entrypoint.statements
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statements.size shouldBe 8
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val z1decl = statements[0] as VarDecl
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val z1init = statements[1] as Assignment
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val z2decl = statements[2] as VarDecl
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val z2init = statements[3] as Assignment
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val z2plus = statements[4] as Assignment
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val z3decl = statements[5] as VarDecl
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val z3init = statements[6] as Assignment
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val z3plus = statements[7] as Assignment
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z1decl.name shouldBe "z1"
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z1init.value shouldBe NumericLiteralValue(DataType.UBYTE, 10.0, Position.DUMMY)
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z2decl.name shouldBe "z2"
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z2init.value shouldBe IdentifierReference(listOf("z1"), Position.DUMMY)
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z2plus.isAugmentable shouldBe true
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(z2plus.value as BinaryExpression).operator shouldBe "+"
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(z2plus.value as BinaryExpression).right shouldBe NumericLiteralValue(DataType.UBYTE, 5.0, Position.DUMMY)
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z3decl.name shouldBe "z3"
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z3init.value shouldBe IdentifierReference(listOf("z1"), Position.DUMMY)
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z3plus.isAugmentable shouldBe true
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(z3plus.value as BinaryExpression).operator shouldBe "-"
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(z3plus.value as BinaryExpression).right shouldBe NumericLiteralValue(DataType.UBYTE, 5.0, Position.DUMMY)
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}
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test("force_output option should work with optimizing memwrite assignment") {
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val src="""
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main {
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%option force_output
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sub start() {
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uword aa
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ubyte zz
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@(aa) = zz + 32
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}
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}
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"""
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val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
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val stmts = result.program.entrypoint.statements
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stmts.size shouldBe 6
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val assign=stmts.last() as Assignment
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(assign.target.memoryAddress?.addressExpression as IdentifierReference).nameInSource shouldBe listOf("aa")
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}
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test("don't optimize memory writes away") {
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val src="""
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main {
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sub start() {
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uword aa
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ubyte zz
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@(aa) = zz + 32 ; do not optimize this away!
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}
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}
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"""
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val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
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val stmts = result.program.entrypoint.statements
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stmts.size shouldBe 6
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val assign=stmts.last() as Assignment
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(assign.target.memoryAddress?.addressExpression as IdentifierReference).nameInSource shouldBe listOf("aa")
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}
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test("correctly process constant prefix numbers") {
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val src="""
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main {
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sub start() {
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ubyte @shared z1 = 1
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ubyte @shared z2 = +1
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ubyte @shared z3 = ~1
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ubyte @shared z4 = not 1
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byte @shared z5 = - 1
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}
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}
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"""
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val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
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val stmts = result.program.entrypoint.statements
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stmts.size shouldBe 10
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stmts.filterIsInstance<VarDecl>().size shouldBe 5
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stmts.filterIsInstance<Assignment>().size shouldBe 5
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}
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})
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