Apple-2-SW/prog8
1
0
Fork 0
mirror of https://github.com/irmen/prog8.git synced 2026-03-11 05:41:42 +00:00
Code Issues Projects Releases Wiki Activity

constValue(expr) convenience function added for new Ast expression nodes

Browse Source
This commit is contained in:
Irmen de Jong
2022-04-10 18:45:33 +02:00
parent 3f6393f732
commit e2e951efdf
2 changed files with 14 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
codeGenVirtual/src/prog8/codegen/virtual/CodeGen.kt
View File

@@ -399,7 +399,7 @@ class CodeGen(internal val program: PtProgram,
var condition = ifElse.condition
val cond = ifElse.condition as? PtBinaryExpression
if((cond?.right as? PtNumber)?.number==0.0) {
if(cond!=null && constValue(cond.right)==0.0) {
if(cond.operator == "==") {
// if X==0 ... so we branch on Not-zero instead.
branch = Opcode.BNZ
@@ -462,7 +462,7 @@ class CodeGen(internal val program: PtProgram,
val variable = array.variable.targetName
var variableAddr = allocations.get(variable)
val itemsize = program.memsizer.memorySize(array.type)
val fixedIndex = (array.index as? PtNumber)?.number?.toInt()
val fixedIndex = constIntValue(array.index)
val memOp = when(postIncrDecr.operator) {
"++" -> Opcode.INCM
"--" -> Opcode.DECM
@@ -485,13 +485,13 @@ class CodeGen(internal val program: PtProgram,
}
private fun translate(repeat: PtRepeatLoop): VmCodeChunk {
if((repeat.count as? PtNumber)?.number==0.0)
return VmCodeChunk()
if((repeat.count as? PtNumber)?.number==1.0)
return translateGroup(repeat.children)
if((repeat.count as? PtNumber)?.number==256.0) {
// 256 iterations can still be done with just a byte counter if you set it to zero as starting value.
repeat.children[0] = PtNumber(DataType.UBYTE, 0.0, repeat.count.position)
when (constIntValue(repeat.count)) {
0 -> return VmCodeChunk()
1 -> return translateGroup(repeat.children)
256 -> {
// 256 iterations can still be done with just a byte counter if you set it to zero as starting value.
repeat.children[0] = PtNumber(DataType.UBYTE, 0.0, repeat.count.position)
}
}
val code = VmCodeChunk()
@@ -543,7 +543,7 @@ class CodeGen(internal val program: PtProgram,
val variable = array.variable.targetName
var variableAddr = allocations.get(variable)
val itemsize = program.memsizer.memorySize(array.type)
val fixedIndex = (array.index as? PtNumber)?.number?.toInt()
val fixedIndex = constIntValue(array.index)
val vmDtArrayIdx = vmType(array.type)
if(fixedIndex!=null) {
variableAddr += fixedIndex*itemsize