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; RUN: llc -mtriple aarch64-unknown-windows-msvc %s -o - | FileCheck %s
define internal swifttailcc void @"?future_adapter@@YWXPEAVAsyncContext@swift@@@Z"(ptr noundef swiftasync %_context) #0 {
entry:
%add.ptr = getelementptr inbounds i8, ptr %_context, i64 -32
%asyncEntryPoint = getelementptr inbounds i8, ptr %_context, i64 -24
%0 = load ptr, ptr %asyncEntryPoint, align 8
%closureContext = getelementptr inbounds i8, ptr %_context, i64 -16
%1 = load ptr, ptr %closureContext, align 8
%2 = load ptr, ptr %add.ptr, align 8
musttail call swifttailcc void %0(ptr noundef %2, ptr noundef swiftasync %_context, ptr noundef swiftself %1) #17
ret void
}
; Check that x20 isn't saved/restored at the prologue/epilogue which
; would interfere with the outgoing self parameter on x20 at the tail
; call.
; CHECK-NOT: st{{.*}}x20
; CHECK: ldp x1, x20, [x22, #-24]
; CHECK-NEXT: ldur x0, [x22, #-32]
; CHECK-NEXT: br x1
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