mirror of
https://github.com/irmen/prog8.git
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670 lines
27 KiB
Kotlin
670 lines
27 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.string.shouldContain
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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.codegen.target.C64Target
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import prog8.compiler.astprocessing.processAstBeforeAsmGeneration
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import prog8.compiler.printProgram
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import prog8.compilerinterface.CompilationOptions
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import prog8.compilerinterface.LauncherType
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import prog8.compilerinterface.OutputType
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import prog8.compilerinterface.ZeropageType
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import prog8tests.helpers.*
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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 from typecast 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 shouldBe 11.0
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constvalue.type shouldBe DataType.BYTE
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constvalue.parent shouldBeSameInstanceAs tc.parent
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}
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test("generated constvalue from prefixexpr inherits proper parent linkage") {
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val number = NumericLiteralValue(DataType.UBYTE, 11.0, Position.DUMMY)
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val pfx = PrefixExpression("-", number, Position.DUMMY)
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val program = Program("test", DummyFunctions, DummyMemsizer, DummyStringEncoder)
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pfx.linkParents(ParentSentinel)
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pfx.parent shouldNotBe null
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number.parent shouldNotBe null
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pfx shouldBeSameInstanceAs number.parent
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val constvalue = pfx.constValue(program)!!
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constvalue shouldBe instanceOf<NumericLiteralValue>()
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constvalue.number shouldBe -11.0
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constvalue.type shouldBe DataType.BYTE
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constvalue.parent shouldBeSameInstanceAs pfx.parent
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}
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test("const folding multiple scenarios +/-") {
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val source = """
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main {
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const ubyte boardHeightC = 20
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const ubyte boardOffsetC = 3
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sub start() {
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uword load_location = 12345
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word llw = 12345
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cx16.r0 = load_location + 8000 + 1000 + 1000
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cx16.r2 = 8000 + 1000 + 1000 + load_location
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cx16.r4 = load_location + boardOffsetC + boardHeightC - 1
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cx16.r5s = llw - 900 - 999
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cx16.r7s = llw - 900 + 999
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}
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}"""
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val result = compileText(C64Target, true, source, writeAssembly = false).assertSuccess()
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// expected:
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// uword load_location
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// load_location = 12345
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// word llw
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// llw = 12345
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// cx16.r0 = load_location
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// cx16.r0 += 10000
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// cx16.r2 = load_location
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// cx16.r2 += 10000
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// cx16.r4 = load_location
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// cx16.r4 += 22
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// cx16.r5s = llw
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// cx16.r5s -= 1899
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// cx16.r7s = llw
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// cx16.r7s += 99
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val stmts = result.program.entrypoint.statements
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stmts.size shouldBe 14
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val addR0value = (stmts[5] as Assignment).value
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val binexpr0 = addR0value as BinaryExpression
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binexpr0.operator shouldBe "+"
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binexpr0.right shouldBe NumericLiteralValue(DataType.UWORD, 10000.0, Position.DUMMY)
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val addR2value = (stmts[7] as Assignment).value
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val binexpr2 = addR2value as BinaryExpression
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binexpr2.operator shouldBe "+"
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binexpr2.right shouldBe NumericLiteralValue(DataType.UWORD, 10000.0, Position.DUMMY)
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val addR4value = (stmts[9] as Assignment).value
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val binexpr4 = addR4value as BinaryExpression
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binexpr4.operator shouldBe "+"
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binexpr4.right shouldBe NumericLiteralValue(DataType.UWORD, 22.0, Position.DUMMY)
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val subR5value = (stmts[11] as Assignment).value
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val binexpr5 = subR5value as BinaryExpression
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binexpr5.operator shouldBe "-"
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binexpr5.right shouldBe NumericLiteralValue(DataType.UWORD, 1899.0, Position.DUMMY)
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val subR7value = (stmts[13] as Assignment).value
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val binexpr7 = subR7value as BinaryExpression
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binexpr7.operator shouldBe "+"
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binexpr7.right shouldBe NumericLiteralValue(DataType.UWORD, 99.0, Position.DUMMY)
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}
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test("const folding multiple scenarios * and /") {
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val source = """
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main {
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sub start() {
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word llw = 300
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cx16.r0s = 9 * 2 * 10 * llw
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cx16.r1s = llw * 9 * 2 * 10
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cx16.r2s = llw / 30 / 3
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cx16.r3s = llw / 2 * 10
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cx16.r4s = llw * 90 / 5 ; not optimized because of loss of integer division precision
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}
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}"""
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val result = compileText(C64Target, true, source, writeAssembly = false).assertSuccess()
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printProgram(result.program)
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// expected:
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// word llw
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// llw = 300
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// cx16.r0s = llw
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// cx16.r0s *= 180
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// cx16.r1s = llw
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// cx16.r1s *= 180
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// cx16.r2s = llw
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// cx16.r2s /= 90
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// cx16.r3s = llw
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// cx16.r3s *= 5
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// cx16.r4s = llw
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// cx16.r4s *= 90
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// cx16.r4s /= 5
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val stmts = result.program.entrypoint.statements
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stmts.size shouldBe 13
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val mulR0Value = (stmts[3] as Assignment).value
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val binexpr0 = mulR0Value as BinaryExpression
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binexpr0.operator shouldBe "*"
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binexpr0.right shouldBe NumericLiteralValue(DataType.UWORD, 180.0, Position.DUMMY)
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val mulR1Value = (stmts[5] as Assignment).value
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val binexpr1 = mulR1Value as BinaryExpression
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binexpr1.operator shouldBe "*"
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binexpr1.right shouldBe NumericLiteralValue(DataType.UWORD, 180.0, Position.DUMMY)
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val divR2Value = (stmts[7] as Assignment).value
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val binexpr2 = divR2Value as BinaryExpression
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binexpr2.operator shouldBe "/"
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binexpr2.right shouldBe NumericLiteralValue(DataType.UWORD, 90.0, Position.DUMMY)
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val mulR3Value = (stmts[9] as Assignment).value
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val binexpr3 = mulR3Value as BinaryExpression
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binexpr3.operator shouldBe "*"
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binexpr3.right shouldBe NumericLiteralValue(DataType.UWORD, 5.0, Position.DUMMY)
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val mulR4Value = (stmts[11] as Assignment).value
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val binexpr4 = mulR4Value as BinaryExpression
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binexpr4.operator shouldBe "*"
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binexpr4.right shouldBe NumericLiteralValue(DataType.UWORD, 90.0, Position.DUMMY)
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val divR4Value = (stmts[12] as Assignment).value
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val binexpr4b = divR4Value as BinaryExpression
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binexpr4b.operator shouldBe "/"
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binexpr4b.right shouldBe NumericLiteralValue(DataType.UWORD, 5.0, Position.DUMMY)
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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, false, 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 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 shouldBe 11.0
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(initX2.value as NumericLiteralValue).type shouldBe DataType.BYTE
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(initX2.value as NumericLiteralValue).number shouldBe 11.0
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(initY1.value as NumericLiteralValue).type shouldBe DataType.UBYTE
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(initY1.value as NumericLiteralValue).number shouldBe 11.0
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(initY2.value as NumericLiteralValue).type shouldBe DataType.UBYTE
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(initY2.value as NumericLiteralValue).number 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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result.program.processAstBeforeAsmGeneration(options, ErrorReporterForTests())
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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 as? IdentifierReference)?.nameInSource shouldBe listOf("bb")
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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 as? IdentifierReference)?.nameInSource shouldBe listOf("bb")
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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 as? IdentifierReference)?.nameInSource shouldBe listOf("ww")
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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 as? IdentifierReference)?.nameInSource shouldBe listOf("ff")
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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 ; removed
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ubyte @shared unused_but_shared ; this one should remain
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ubyte usedvar_only_written ; not removed because has multiple assignments
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usedvar_only_written=2
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usedvar_only_written++
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ubyte usedvar ; and this one remains 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 7
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val alldecls = result.program.entrypoint.allDefinedSymbols.toList()
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alldecls.map { it.first } shouldBe listOf("unused_but_shared", "usedvar_only_written", "usedvar")
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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 ; 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 ; 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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printProgram(result.program)
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result.program.entrypoint.statements.size shouldBe 3
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val ifstmt = result.program.entrypoint.statements[0] as IfElse
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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
|
|
z2 = ~z2
|
|
ubyte @shared z3
|
|
z3 = not z3
|
|
uword @shared z4
|
|
z4 = (z4 as ubyte)
|
|
ubyte @shared z5
|
|
z5 = z1+z5+5
|
|
ubyte @shared z6
|
|
z6 = z1+z6-5
|
|
}
|
|
}"""
|
|
val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
|
|
/* expected:
|
|
ubyte z1
|
|
z1 = 10
|
|
ubyte z2
|
|
z2 = 255
|
|
ubyte z3
|
|
z3 = 1
|
|
uword z4
|
|
z4 = 0
|
|
ubyte z5
|
|
z5 = z1
|
|
z5 += 5
|
|
ubyte z6
|
|
z6 = z1
|
|
z6 -= 5
|
|
*/
|
|
val statements = result.program.entrypoint.statements
|
|
statements.size shouldBe 14
|
|
val z1decl = statements[0] as VarDecl
|
|
val z1init = statements[1] as Assignment
|
|
val z2decl = statements[2] as VarDecl
|
|
val z2init = statements[3] as Assignment
|
|
val z3decl = statements[4] as VarDecl
|
|
val z3init = statements[5] as Assignment
|
|
val z4decl = statements[6] as VarDecl
|
|
val z4init = statements[7] as Assignment
|
|
val z5decl = statements[8] as VarDecl
|
|
val z5init = statements[9] as Assignment
|
|
val z5plus = statements[10] as Assignment
|
|
val z6decl = statements[11] as VarDecl
|
|
val z6init = statements[12] as Assignment
|
|
val z6plus = statements[13] as Assignment
|
|
|
|
z1decl.name shouldBe "z1"
|
|
z1init.value shouldBe NumericLiteralValue(DataType.UBYTE, 10.0, Position.DUMMY)
|
|
z2decl.name shouldBe "z2"
|
|
z2init.value shouldBe NumericLiteralValue(DataType.UBYTE, 255.0, Position.DUMMY)
|
|
z3decl.name shouldBe "z3"
|
|
z3init.value shouldBe NumericLiteralValue(DataType.UBYTE, 1.0, Position.DUMMY)
|
|
z4decl.name shouldBe "z4"
|
|
z4init.value shouldBe NumericLiteralValue(DataType.UBYTE, 0.0, Position.DUMMY)
|
|
z5decl.name shouldBe "z5"
|
|
(z5init.value as? IdentifierReference)?.nameInSource shouldBe listOf("z1")
|
|
z5plus.isAugmentable shouldBe true
|
|
(z5plus.value as BinaryExpression).operator shouldBe "+"
|
|
(z5plus.value as BinaryExpression).right shouldBe NumericLiteralValue(DataType.UBYTE, 5.0, Position.DUMMY)
|
|
z6decl.name shouldBe "z6"
|
|
(z6init.value as? IdentifierReference)?.nameInSource shouldBe listOf("z1")
|
|
z6plus.isAugmentable shouldBe true
|
|
(z6plus.value as BinaryExpression).operator shouldBe "-"
|
|
(z6plus.value as BinaryExpression).right shouldBe NumericLiteralValue(DataType.UBYTE, 5.0, Position.DUMMY)
|
|
}
|
|
|
|
test("force_output option should work with optimizing memwrite assignment") {
|
|
val src="""
|
|
main {
|
|
%option force_output
|
|
|
|
sub start() {
|
|
uword aa
|
|
ubyte zz
|
|
@(aa) = zz + 32
|
|
}
|
|
}
|
|
"""
|
|
|
|
val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
|
|
val stmts = result.program.entrypoint.statements
|
|
stmts.size shouldBe 6
|
|
val assign=stmts.last() as Assignment
|
|
(assign.target.memoryAddress?.addressExpression as IdentifierReference).nameInSource shouldBe listOf("aa")
|
|
}
|
|
|
|
test("don't optimize memory writes away") {
|
|
val src="""
|
|
main {
|
|
sub start() {
|
|
uword aa
|
|
ubyte zz
|
|
@(aa) = zz + 32 ; do not optimize this away!
|
|
}
|
|
}
|
|
"""
|
|
val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
|
|
val stmts = result.program.entrypoint.statements
|
|
stmts.size shouldBe 6
|
|
val assign=stmts.last() as Assignment
|
|
(assign.target.memoryAddress?.addressExpression as IdentifierReference).nameInSource shouldBe listOf("aa")
|
|
}
|
|
|
|
test("correctly process constant prefix numbers") {
|
|
val src="""
|
|
main {
|
|
sub start() {
|
|
ubyte @shared z1 = 1
|
|
ubyte @shared z2 = + 1
|
|
ubyte @shared z3 = ~ 1
|
|
ubyte @shared z4 = not 1
|
|
byte @shared z5 = - 1
|
|
}
|
|
}
|
|
"""
|
|
val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
|
|
val stmts = result.program.entrypoint.statements
|
|
stmts.size shouldBe 10
|
|
stmts.filterIsInstance<VarDecl>().size shouldBe 5
|
|
stmts.filterIsInstance<Assignment>().size shouldBe 5
|
|
}
|
|
|
|
test("correctly process constant prefix numbers with type mismatch and give error") {
|
|
val src="""
|
|
main {
|
|
sub start() {
|
|
ubyte @shared z1 = - 1
|
|
}
|
|
}
|
|
"""
|
|
val errors = ErrorReporterForTests()
|
|
compileText(C64Target, optimize=true, src, writeAssembly=false, errors = errors).assertFailure()
|
|
errors.errors.size shouldBe 2
|
|
errors.errors[0] shouldContain "type of value BYTE doesn't match target UBYTE"
|
|
errors.errors[1] shouldContain "out of range"
|
|
}
|
|
|
|
test("test augmented expression asmgen") {
|
|
val src = """
|
|
main {
|
|
sub start() {
|
|
ubyte c
|
|
ubyte r
|
|
ubyte q
|
|
r = (q+r)-c
|
|
q=r
|
|
r = q+(r-c)
|
|
q=r
|
|
}
|
|
}"""
|
|
val result = compileText(C64Target, optimize=false, src, writeAssembly=true).assertSuccess()
|
|
result.program.entrypoint.statements.size shouldBe 11
|
|
result.program.entrypoint.statements.last() shouldBe instanceOf<Return>()
|
|
}
|
|
|
|
test("keep the value initializer assignment if the next one depends on it") {
|
|
val src="""
|
|
main {
|
|
sub start() {
|
|
uword @shared yy
|
|
yy = 20 ; ok to remove =0 initializer before this
|
|
uword @shared zz
|
|
zz += 60 ; NOT ok to remove initializer, should evaluate to 60
|
|
ubyte @shared xx
|
|
xx = 6+sin8u(xx) ; is not an initializer because it references xx
|
|
}
|
|
}
|
|
"""
|
|
val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
|
|
printProgram(result.program)
|
|
/* expected result:
|
|
uword yy
|
|
yy = 20
|
|
uword zz
|
|
zz = 60
|
|
ubyte xx
|
|
xx = 0
|
|
xx = sin8u(xx)
|
|
xx += 6
|
|
*/
|
|
val stmts = result.program.entrypoint.statements
|
|
stmts.size shouldBe 8
|
|
stmts.filterIsInstance<VarDecl>().size shouldBe 3
|
|
stmts.filterIsInstance<Assignment>().size shouldBe 5
|
|
}
|
|
|
|
test("only substitue assignments with 0 after a =0 initializer if it is the same variable") {
|
|
val src="""
|
|
main {
|
|
sub start() {
|
|
uword @shared xx
|
|
xx = xx + 20 ; is same var so can be changed just fine into xx=20
|
|
uword @shared yy
|
|
xx = 20
|
|
yy = 0 ; is other var..
|
|
xx = xx+10 ; so this should not be changed into xx=10
|
|
}
|
|
}"""
|
|
val result = compileText(C64Target, optimize=true, src, writeAssembly=false).assertSuccess()
|
|
/*
|
|
expected result:
|
|
uword xx
|
|
xx = 20
|
|
uword yy
|
|
yy = 0
|
|
xx = 20
|
|
yy = 0
|
|
xx += 10
|
|
*/
|
|
printProgram(result.program)
|
|
|
|
val stmts = result.program.entrypoint.statements
|
|
stmts.size shouldBe 7
|
|
stmts.filterIsInstance<VarDecl>().size shouldBe 2
|
|
stmts.filterIsInstance<Assignment>().size shouldBe 5
|
|
val assignXX1 = stmts[1] as Assignment
|
|
assignXX1.target.identifier!!.nameInSource shouldBe listOf("xx")
|
|
assignXX1.value shouldBe NumericLiteralValue(DataType.UBYTE, 20.0, Position.DUMMY)
|
|
val assignXX2 = stmts.last() as Assignment
|
|
assignXX2.target.identifier!!.nameInSource shouldBe listOf("xx")
|
|
val xxValue = assignXX2.value as BinaryExpression
|
|
xxValue.operator shouldBe "+"
|
|
(xxValue.left as? IdentifierReference)?.nameInSource shouldBe listOf("xx")
|
|
xxValue.right shouldBe NumericLiteralValue(DataType.UBYTE, 10.0, Position.DUMMY)
|
|
}
|
|
})
|