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optimize boolean to ubyte assignment (skip type cast)

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Irmen de Jong
2024-02-20 22:12:33 +01:00
parent 7868e672e0
commit 006713fe13
4 changed files with 24 additions and 11 deletions
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16
codeGenCpu6502/src/prog8/codegen/cpu6502/assignment/AssignmentAsmGen.kt
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@@ -1562,7 +1562,21 @@ internal class AssignmentAsmGen(private val program: PtProgram,
return assignTypeCastedIdentifier(target.asmVarname, targetDt, asmgen.asmVariableName(value), valueDt)
when (valueDt) {
in ByteDatatypesWithBoolean -> {
DataType.BOOL -> {
if(targetDt in ByteDatatypes) {
// optimization to assign boolean expression to byte target (just assign the 0 or 1 directly, no cast needed)
val assignDirect = AsmAssignment(
AsmAssignSource.fromAstSource(value, program, asmgen),
target,
program.memsizer,
target.position
)
assignExpression(assignDirect, target.scope)
} else {
throw AssemblyError("expected bool or byte target type")
}
}
in ByteDatatypes -> {
assignExpressionToRegister(value, RegisterOrPair.A, valueDt==DataType.BYTE)
assignTypeCastedRegisters(target.asmVarname, targetDt, RegisterOrPair.A, valueDt)
}