mirror of
https://github.com/irmen/prog8.git
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177 lines
7.4 KiB
Kotlin
177 lines
7.4 KiB
Kotlin
import io.kotest.core.spec.style.FunSpec
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import io.kotest.matchers.shouldBe
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import prog8.code.core.*
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import prog8.code.target.VMTarget
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import prog8.codegen.intermediate.IRPeepholeOptimizer
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import prog8.intermediate.*
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class TestIRPeepholeOpt: FunSpec({
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fun makeIRProgram(instructions: List<IRCodeLine>): IRProgram {
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val block = IRBlock("main", null, IRBlock.BlockAlignment.NONE, Position.DUMMY)
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val sub = IRSubroutine("main.start", emptyList(), null, Position.DUMMY)
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val chunk = IRCodeChunk(Position.DUMMY)
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for(instr in instructions)
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chunk += instr
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sub += chunk
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block += sub
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val target = VMTarget()
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val options = CompilationOptions(
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OutputType.RAW,
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CbmPrgLauncherType.NONE,
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ZeropageType.DONTUSE,
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emptyList(),
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floats = false,
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noSysInit = true,
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compTarget = target,
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loadAddress = target.machine.PROGRAM_LOAD_ADDRESS
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)
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val prog = IRProgram("test", IRSymbolTable(null), options, target)
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prog.addBlock(block)
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return prog
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}
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fun IRProgram.instructions(): List<IRCodeLine> = this.blocks.flatMap { it.subroutines }.flatMap { it.chunks }.flatMap { it.instructions }
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test("remove nops") {
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val irProg = makeIRProgram(listOf(
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IRInstruction(Opcode.JUMP, labelSymbol = "dummy"),
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IRInstruction(Opcode.NOP),
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IRInstruction(Opcode.NOP)
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))
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irProg.instructions().size shouldBe 3
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val opt = IRPeepholeOptimizer(irProg)
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opt.optimize()
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irProg.instructions().size shouldBe 1
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}
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test("remove jmp to label below") {
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val irProg = makeIRProgram(listOf(
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IRInstruction(Opcode.JUMP, labelSymbol = "label"), // removed
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IRCodeLabel("label"),
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IRInstruction(Opcode.JUMP, labelSymbol = "label2"), // removed
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IRInstruction(Opcode.NOP), // removed
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IRCodeLabel("label2"),
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IRInstruction(Opcode.JUMP, labelSymbol = "label3"),
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IRInstruction(Opcode.INC, IRDataType.BYTE, reg1=1),
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IRCodeLabel("label3")
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))
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irProg.instructions().size shouldBe 8
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val opt = IRPeepholeOptimizer(irProg)
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opt.optimize()
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val lines = irProg.instructions()
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lines.size shouldBe 5
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(lines[0] as IRCodeLabel).name shouldBe "label"
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(lines[1] as IRCodeLabel).name shouldBe "label2"
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(lines[2] as IRInstruction).opcode shouldBe Opcode.JUMP
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(lines[3] as IRInstruction).opcode shouldBe Opcode.INC
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(lines[4] as IRCodeLabel).name shouldBe "label3"
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}
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test("remove double sec/clc") {
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val irProg = makeIRProgram(listOf(
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IRInstruction(Opcode.SEC),
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IRInstruction(Opcode.SEC),
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IRInstruction(Opcode.SEC),
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IRInstruction(Opcode.CLC),
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IRInstruction(Opcode.CLC),
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IRInstruction(Opcode.CLC)
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))
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irProg.instructions().size shouldBe 6
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val opt = IRPeepholeOptimizer(irProg)
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opt.optimize()
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val lines = irProg.instructions()
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lines.size shouldBe 1
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(lines[0] as IRInstruction).opcode shouldBe Opcode.CLC
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}
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test("push followed by pop") {
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val irProg = makeIRProgram(listOf(
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IRInstruction(Opcode.PUSH, IRDataType.BYTE, reg1=42),
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IRInstruction(Opcode.POP, IRDataType.BYTE, reg1=42),
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IRInstruction(Opcode.PUSH, IRDataType.BYTE, reg1=99),
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IRInstruction(Opcode.POP, IRDataType.BYTE, reg1=222)
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))
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irProg.instructions().size shouldBe 4
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val opt = IRPeepholeOptimizer(irProg)
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opt.optimize()
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val lines = irProg.instructions()
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lines.size shouldBe 1
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(lines[0] as IRInstruction).opcode shouldBe Opcode.LOADR
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(lines[0] as IRInstruction).reg1 shouldBe 222
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(lines[0] as IRInstruction).reg2 shouldBe 99
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}
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test("remove useless div/mul, add/sub") {
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val irProg = makeIRProgram(listOf(
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IRInstruction(Opcode.DIV, IRDataType.BYTE, reg1=42, value = 1),
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IRInstruction(Opcode.DIVS, IRDataType.BYTE, reg1=42, value = 1),
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IRInstruction(Opcode.MUL, IRDataType.BYTE, reg1=42, value = 1),
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IRInstruction(Opcode.MOD, IRDataType.BYTE, reg1=42, value = 1),
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IRInstruction(Opcode.DIV, IRDataType.BYTE, reg1=42, value = 2),
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IRInstruction(Opcode.DIVS, IRDataType.BYTE, reg1=42, value = 2),
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IRInstruction(Opcode.MUL, IRDataType.BYTE, reg1=42, value = 2),
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IRInstruction(Opcode.MOD, IRDataType.BYTE, reg1=42, value = 2),
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IRInstruction(Opcode.ADD, IRDataType.BYTE, reg1=42, value = 0),
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IRInstruction(Opcode.SUB, IRDataType.BYTE, reg1=42, value = 0)
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))
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irProg.instructions().size shouldBe 10
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val opt = IRPeepholeOptimizer(irProg)
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opt.optimize()
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val lines = irProg.instructions()
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lines.size shouldBe 4
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}
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test("replace add/sub 1 by inc/dec") {
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val irProg = makeIRProgram(listOf(
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IRInstruction(Opcode.ADD, IRDataType.BYTE, reg1=42, value = 1),
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IRInstruction(Opcode.SUB, IRDataType.BYTE, reg1=42, value = 1)
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))
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irProg.instructions().size shouldBe 2
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val opt = IRPeepholeOptimizer(irProg)
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opt.optimize()
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val lines = irProg.instructions()
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lines.size shouldBe 2
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(lines[0] as IRInstruction).opcode shouldBe Opcode.INC
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(lines[1] as IRInstruction).opcode shouldBe Opcode.DEC
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}
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test("remove useless and/or/xor") {
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val irProg = makeIRProgram(listOf(
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IRInstruction(Opcode.AND, IRDataType.BYTE, reg1=42, value = 255),
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IRInstruction(Opcode.AND, IRDataType.WORD, reg1=42, value = 65535),
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IRInstruction(Opcode.OR, IRDataType.BYTE, reg1=42, value = 0),
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IRInstruction(Opcode.XOR, IRDataType.BYTE, reg1=42, value = 0),
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IRInstruction(Opcode.AND, IRDataType.BYTE, reg1=42, value = 200),
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IRInstruction(Opcode.AND, IRDataType.WORD, reg1=42, value = 60000),
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IRInstruction(Opcode.OR, IRDataType.BYTE, reg1=42, value = 1),
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IRInstruction(Opcode.XOR, IRDataType.BYTE, reg1=42, value = 1)
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))
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irProg.instructions().size shouldBe 8
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val opt = IRPeepholeOptimizer(irProg)
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opt.optimize()
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val lines = irProg.instructions()
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lines.size shouldBe 4
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}
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test("replace and/or/xor by constant number") {
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val irProg = makeIRProgram(listOf(
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IRInstruction(Opcode.AND, IRDataType.BYTE, reg1=42, value = 0),
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IRInstruction(Opcode.AND, IRDataType.WORD, reg1=42, value = 0),
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IRInstruction(Opcode.OR, IRDataType.BYTE, reg1=42, value = 255),
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IRInstruction(Opcode.OR, IRDataType.WORD, reg1=42, value = 65535)
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))
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irProg.instructions().size shouldBe 4
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val opt = IRPeepholeOptimizer(irProg)
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opt.optimize()
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val lines = irProg.instructions()
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lines.size shouldBe 4
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(lines[0] as IRInstruction).opcode shouldBe Opcode.LOAD
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(lines[1] as IRInstruction).opcode shouldBe Opcode.LOAD
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(lines[2] as IRInstruction).opcode shouldBe Opcode.LOAD
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(lines[3] as IRInstruction).opcode shouldBe Opcode.LOAD
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(lines[0] as IRInstruction).value shouldBe 0
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(lines[1] as IRInstruction).value shouldBe 0
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(lines[2] as IRInstruction).value shouldBe 255
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(lines[3] as IRInstruction).value shouldBe 65535
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}
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}) |