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vm: add in-place add/sub

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Irmen de Jong
2022-05-19 22:54:50 +02:00
parent c769920b6e
commit 461b6499ef
5 changed files with 162 additions and 25 deletions
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codeGenVirtual/src/prog8/codegen/virtual/AssignmentGen.kt
+2 -2
View File
@@ -84,8 +84,8 @@ internal class AssignmentGen(private val codeGen: CodeGen, private val expressio
origAssign: PtAssignment
): VmCodeChunk {
when(operator) {
"+" -> { /* TODO */ }
"-" -> { /* TODO */ }
"+" -> return expressionEval.operatorPlusInplace(targetAddress, vmDt, right)
"-" -> return expressionEval.operatorMinusInplace(targetAddress, vmDt, right)
"*" -> { /* TODO */ }
"/" -> { /* TODO */ }
"|" -> { /* TODO */ }
codeGenVirtual/src/prog8/codegen/virtual/ExpressionGen.kt
+48
View File
@@ -611,6 +611,30 @@ internal class ExpressionGen(private val codeGen: CodeGen) {
return code
}
internal fun operatorMinusInplace(targetAddress: Int, vmDt: VmDataType, operand: PtExpression): VmCodeChunk {
val code = VmCodeChunk()
if(vmDt==VmDataType.FLOAT) {
if((operand as? PtNumber)?.number==1.0) {
code += VmCodeInstruction(Opcode.DECM, vmDt, value=targetAddress)
}
else {
val operandFpReg = codeGen.vmRegisters.nextFreeFloat()
code += translateExpression(operand, -1, operandFpReg)
code += VmCodeInstruction(Opcode.SUBM, vmDt, fpReg1=operandFpReg, value=targetAddress)
}
} else {
if((operand as? PtNumber)?.number==1.0) {
code += VmCodeInstruction(Opcode.DECM, vmDt, value=targetAddress)
}
else {
val operandReg = codeGen.vmRegisters.nextFree()
code += translateExpression(operand, operandReg, -1)
code += VmCodeInstruction(Opcode.SUBM, vmDt, reg1=operandReg, value = targetAddress)
}
}
return code
}
private fun operatorPlus(binExpr: PtBinaryExpression, vmDt: VmDataType, resultRegister: Int, resultFpRegister: Int): VmCodeChunk {
val code = VmCodeChunk()
if(vmDt==VmDataType.FLOAT) {
@@ -647,6 +671,30 @@ internal class ExpressionGen(private val codeGen: CodeGen) {
return code
}
internal fun operatorPlusInplace(targetAddress: Int, vmDt: VmDataType, operand: PtExpression): VmCodeChunk {
val code = VmCodeChunk()
if(vmDt==VmDataType.FLOAT) {
if((operand as? PtNumber)?.number==1.0) {
code += VmCodeInstruction(Opcode.INCM, vmDt, value = targetAddress)
}
else {
val operandFpReg = codeGen.vmRegisters.nextFreeFloat()
code += translateExpression(operand, -1, operandFpReg)
code += VmCodeInstruction(Opcode.ADDM, vmDt, fpReg1=operandFpReg, value=targetAddress)
}
} else {
if((operand as? PtNumber)?.number==1.0) {
code += VmCodeInstruction(Opcode.INCM, vmDt, value = targetAddress)
}
else {
val operandReg = codeGen.vmRegisters.nextFree()
code += translateExpression(operand, operandReg, -1)
code += VmCodeInstruction(Opcode.ADDM, vmDt, reg1=operandReg, value=targetAddress)
}
}
return code
}
fun translate(fcall: PtFunctionCall, resultRegister: Int, resultFpRegister: Int): VmCodeChunk {
val subroutine = codeGen.symbolTable.flat.getValue(fcall.functionName) as StSub
val code = VmCodeChunk()