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1; RUN: llc -mtriple aarch64-unknown-windows-msvc -filetype asm %s -o - | FileCheck %s2 3; Check that the slot offset of the async context (x22) doesn't4; conflict with that of another callee-saved register (x21 here) and5; saving it won't overwrite the saved value of the callee-saved6; register.7;8; CHECK: sub sp, sp, #649; CHECK: str x19, [sp, #16]10; CHECK: str x21, [sp, #24]11; CHECK-NOT: stp x29, x30, [sp, #32]12; CHECK: stp x29, x30, [sp, #40]13; CHECK-NOT: str x22, [sp, #24]14; CHECK: str x22, [sp, #32]15 16declare ptr @llvm.swift.async.context.addr()17declare swiftcc i64 @foo(i64 %0, i64 %1)18declare swifttailcc void @tail(ptr swiftasync %0, ptr swiftself dereferenceable(8) %1, i64 %2)19define internal swifttailcc void @test(ptr swiftasync %0, ptr swiftself %1, i64 %2) {20entry:21 %3 = load ptr, ptr %0, align 822 %4 = call ptr @llvm.swift.async.context.addr()23 store ptr %3, ptr %4, align 824 %5 = call swiftcc i64 @foo(i64 %2, i64 %2)25 %6 = call swiftcc i64 @foo(i64 %2, i64 %5)26 %7 = call swiftcc i64 @foo(i64 %5, i64 %2)27 %8 = call swiftcc i64 @foo(i64 %7, i64 %6)28 %9 = call swiftcc i64 @foo(i64 %2, i64 %8)29 %10 = call ptr @llvm.swift.async.context.addr()30 musttail call swifttailcc void @tail(ptr swiftasync %10, ptr swiftself %1, i64 %2)31 ret void32}33