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In fact, I am aware of that running:
xcrun -sdk macosx swiftc -O -emit-assembly SwiftFile.swift -o result
on terminal should generate "result" file which contains assembly code for "SwiftFile.swift" file.
Also, there are tools such as Hopper to do such a task, furthermore, it can generate Pseudo-code to let it more easy to read.
However, is there a way to do it directly from Xcode? if there is, how to do it?
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Put break point in the code where you want to see assembly code. Then you can view assembly code when code reached to that breakpoint.
To create a new Swift package, open Xcode and select File > New > Swift Package. Choose a name and select a file location. Select “Create Git repository on my Mac” to put your package under version control. On completion, the Swift package opens in Xcode and looks similar to a standard Xcode project.
Go to your targets, click Build Phases. Add a Run Script by clicking the plus in the upper left corner. In text area add the code
xcrun -sdk macosx swiftc -O -emit-assembly Folder/SwiftFile.swift -o result.asm
This will generate an assembly file every time you build for that target. You can also create a new target if you don't want it to generate assembly every time.
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