func (v *Codegen) arrayTypeToLLVMType(typ ast.ArrayType, gcon *ast.GenericContext) llvm.Type {
memType := v.typeRefToLLVMTypeWithOuter(typ.MemberType, gcon)
if typ.IsFixedLength {
return llvm.ArrayType(memType, typ.Length)
} else {
fields := []llvm.Type{v.primitiveTypeToLLVMType(ast.PRIMITIVE_uint), llvm.PointerType(memType, 0)}
return llvm.StructType(fields, false)
}
}
func (v *Codegen) enumTypeToLLVMTypeFields(typ ast.EnumType, gcon *ast.GenericContext) []llvm.Type {
longestLength := uint64(0)
for _, member := range typ.Members {
memLength := v.targetData.TypeAllocSize(v.typeToLLVMType(member.Type, gcon))
if memLength > longestLength {
longestLength = memLength
}
}
// TODO: verify no overflow
return []llvm.Type{enumTagType, llvm.ArrayType(llvm.IntType(8), int(longestLength))}
}
func (v *Codegen) enumMemberTypeToPaddedLLVMType(enumType ast.EnumType, memberIdx int, gcon *ast.GenericContext) llvm.Type {
longestLength := uint64(0)
for _, member := range enumType.Members {
memLength := v.targetData.TypeAllocSize(v.typeToLLVMType(member.Type, gcon))
if memLength > longestLength {
longestLength = memLength
}
}
member := enumType.Members[memberIdx]
actualType := v.typeToLLVMType(member.Type, gcon)
amountPad := longestLength - v.targetData.TypeAllocSize(actualType)
if amountPad > 0 {
types := make([]llvm.Type, actualType.StructElementTypesCount()+1)
copy(types, actualType.StructElementTypes())
types[len(types)-1] = llvm.ArrayType(llvm.IntType(8), int(amountPad))
return llvm.StructType(types, false)
} else {
return actualType
}
}
