async call disassembly in Swift

gistfile1.txt

class TestClassSync {
    func calc() -> Int {
        return 100
    }
    
    func run() -> Int {
        return 100 + calc()
    }
}

// Intel disassembly
AsyncApp`TestClassSync.run():
    0x10f19e330 <+0>:  pushq  %rbp
    0x10f19e331 <+1>:  movq   %rsp, %rbp
    0x10f19e334 <+4>:  subq   $0x10, %rsp
    0x10f19e338 <+8>:  xorl   %esi, %esi
    0x10f19e33a <+10>: leaq   -0x8(%rbp), %rdi
    0x10f19e33e <+14>: movl   $0x8, %edx
    0x10f19e343 <+19>: callq  0x10f19f826               ; symbol stub for: memset
    0x10f19e348 <+24>: movq   %r13, -0x8(%rbp)
->  0x10f19e34c <+28>: movq   (%r13), %rax
    0x10f19e350 <+32>: callq  *0x50(%rax)
    0x10f19e353 <+35>: addq   $0x64, %rax
    0x10f19e357 <+39>: movq   %rax, -0x10(%rbp)
    0x10f19e35b <+43>: seto   %al
    0x10f19e35e <+46>: testb  $0x1, %al
    0x10f19e360 <+48>: jne    0x10f19e36c               ; <+60> [inlined] Swift runtime failure: arithmetic overflow at AsyncAppApp.swift:28:20
    0x10f19e362 <+50>: movq   -0x10(%rbp), %rax
    0x10f19e366 <+54>: addq   $0x10, %rsp
    0x10f19e36a <+58>: popq   %rbp
    0x10f19e36b <+59>: retq   
    0x10f19e36c <+60>: ud2    
    
    
class TestClassAsync {
    func calc() async -> Int {
        return 100
    }
    
    func run() async -> Int {
        return 100 + (await calc())
    }
}

// Intel disassembly
AsyncApp`TestClassAsync.run():
    0x10f19e140 <+0>:   btsq   $0x3c, %rbp
    0x10f19e145 <+5>:   pushq  %rbp
    0x10f19e146 <+6>:   pushq  %r14
    0x10f19e148 <+8>:   leaq   0x8(%rsp), %rbp
    0x10f19e14d <+13>:  subq   $0x28, %rsp
    0x10f19e151 <+17>:  movq   %r14, -0x18(%rbp)
    0x10f19e155 <+21>:  xorl   %eax, %eax
    0x10f19e157 <+23>:  movl   %eax, %edi
    0x10f19e159 <+25>:  callq  0x10f19f330               ; ___lldb_unnamed_symbol12$$AsyncApp
    0x10f19e15e <+30>:  movq   -0x18(%rbp), %rax
    0x10f19e162 <+34>:  movq   %rax, %r14
    0x10f19e165 <+37>:  addq   $0x20, %r14
    0x10f19e169 <+41>:  movq   $0x0, 0x20(%rax)
    0x10f19e171 <+49>:  movq   %rax, 0x18(%rax)
    0x10f19e175 <+53>:  movq   %r13, 0x20(%rax)
->  0x10f19e179 <+57>:  movq   (%r13), %rax
    0x10f19e17d <+61>:  movq   0x50(%rax), %rax
    0x10f19e181 <+65>:  movslq (%rax), %rdx
    0x10f19e184 <+68>:  movq   %rax, %rcx
    0x10f19e187 <+71>:  addq   %rdx, %rcx
    0x10f19e18a <+74>:  movq   %rcx, -0x10(%rbp)
    0x10f19e18e <+78>:  movl   0x4(%rax), %eax
    0x10f19e191 <+81>:  movl   %eax, %edi
    0x10f19e193 <+83>:  callq  0x10f19f8da               ; symbol stub for: swift_task_alloc
    0x10f19e198 <+88>:  movq   -0x18(%rbp), %rcx
    0x10f19e19c <+92>:  movq   %rax, %r14
    0x10f19e19f <+95>:  movq   -0x10(%rbp), %rax
    0x10f19e1a3 <+99>:  movq   %r14, 0x28(%rcx)
    0x10f19e1a7 <+103>: movq   0x18(%rcx), %rcx
    0x10f19e1ab <+107>: movq   %rcx, (%r14)
    0x10f19e1ae <+110>: leaq   0x1b(%rip), %rcx          ; (1) await resume partial function for AsyncApp.TestClassAsync.run() async -> Swift.Int at AsyncAppApp.swift:17
    0x10f19e1b5 <+117>: movq   %rcx, 0x8(%r14)
    0x10f19e1b9 <+121>: addq   $0x20, %rsp
    0x10f19e1bd <+125>: addq   $0x10, %rsp
    0x10f19e1c1 <+129>: popq   %rbp
    0x10f19e1c2 <+130>: btrq   $0x3c, %rbp
    0x10f19e1c7 <+135>: jmpq   *%rax