rename none to null

compiler/llvm/llvm.odin

@@ -275,7 +275,7 @@ valid_value :: proc(
 		return false
 	}
 	switch instructions[value_id].op {
-	case .Param, .Const, .Poison, .String, .Aggregate, .None, .Optional_Some,
+	case .Param, .Const, .Poison, .String, .Aggregate, .Null, .Optional_Some,
 	     .Load_Global, .Function_Address, .Address_Of, .Load, .Union_Tag, .Slice, .Length, .Slice_Ptr,
 	     .Fallible_Error, .Extract, .Select, .Unwrap,
 	     .Optional_Is_Some, .Optional_Value, .Orelse,
@@ -1109,10 +1109,10 @@ emit_instruction_stream :: proc(
 				}
 				fmt.sbprintf(&emitter.builder, ", %d\n", arg_index)
 			}
-		case .None:
+		case .Null:
 			item, ok := types.node(&emitter.module.types, instruction.type)
 			if !ok || item.kind != .Optional {
-				emit_recovery_value(emitter, instruction_index, instruction, "invalid optional none")
+				emit_recovery_value(emitter, instruction_index, instruction, "invalid optional null")
 				continue
 			}
 			if types.is_pointer(item.child, &emitter.module.types) {
@@ -1656,7 +1656,7 @@ emit_instruction_stream :: proc(
 				fmt.sbprintf(&emitter.builder, "  %%optional_ok%d = extractvalue %s %%v%d, 0\n", instruction_index, llvm_type(optional_type, &emitter.module.types), instruction.a)
 			}
 			fmt.sbprintf(&emitter.builder, "  br i1 %%optional_ok%d, label %%optional_continue%d, label %%optional_trap%d\noptional_trap%d:\n", instruction_index, instruction_index, instruction_index, instruction_index)
-			message := diagnostic_message(emitter, source.INVALID_DIAGNOSTIC, instruction.span, "attempted to unwrap none")
+			message := diagnostic_message(emitter, source.INVALID_DIAGNOSTIC, instruction.span, "attempted to unwrap null")
 			emit_trap_call(emitter, message)
 			fmt.sbprintf(&emitter.builder, "  unreachable\noptional_continue%d:\n", instruction_index)
 			if types.is_pointer(item.child, &emitter.module.types) {