; 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