#import Module vs #import Module.subHeadA build performance - ios

Question

// FilePiece1
// the form of import module No.1
// AController.m
#import Module;
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
SubA *info = [[SubA alloc] init];
info.uid = 100;
NSLog(#"%lu", (unsigned long)info.uid);
}
#end
// FilePiece2
// the form of import module No.2
// AController.m
#import Module.subHeadA;
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
SubA *info = [[SubA alloc] init];
info.uid = 100;
NSLog(#"%lu", (unsigned long)info.uid);
}
#end
// FilePiece3
// header file of SubA
// Module/subHeadA.h
#interface SubA
#property (nonatomic, assign) UInt32 uid;
#end
// FilePiece4
// header file of SubB, before the change
// Module/subHeadB.h
#interface SubB
#property (nonatomic, assign) UInt32 kk0;
#end
// FilePiece5
// header file of SubB, after the change
// Module/subHeadB.h
#interface SubB
#property (nonatomic, assign) UInt32 kk0;
#property (nonatomic, assign) UInt32 kk1;
#end
If I need to use SubA in ViewController (FilePiece1), and SubB change between two builds (FilePiece4&5), will there be a difference in build performance between two builds? Can Xcode take advantage of the build cache of the first time (FilePiece4) in both import ways (FilePiece1&2)?
Build Process Description:
the first build
FilePiece1/2
FilePiece3
FilePiece4
the second build
FilePiece1/2
FilePiece3
FilePiece5