| ; RUN: llc -mtriple aarch64-unknown-windows-msvc -filetype asm %s -o - | FileCheck %s |
| |
| ; Check that the slot offset of the async context (x22) doesn't |
| ; conflict with that of another callee-saved register (x21 here) and |
| ; saving it won't overwrite the saved value of the callee-saved |
| ; register. |
| ; |
| ; CHECK: sub sp, sp, #64 |
| ; CHECK: str x19, [sp, #16] |
| ; CHECK: str x21, [sp, #24] |
| ; CHECK-NOT: stp x29, x30, [sp, #32] |
| ; CHECK: stp x29, x30, [sp, #40] |
| ; CHECK-NOT: str x22, [sp, #24] |
| ; CHECK: str x22, [sp, #32] |
| |
| declare ptr @llvm.swift.async.context.addr() |
| declare swiftcc i64 @foo(i64 %0, i64 %1) |
| declare swifttailcc void @tail(ptr swiftasync %0, ptr swiftself dereferenceable(8) %1, i64 %2) |
| define internal swifttailcc void @test(ptr swiftasync %0, ptr swiftself %1, i64 %2) { |
| entry: |
| %3 = load ptr, ptr %0, align 8 |
| %4 = call ptr @llvm.swift.async.context.addr() |
| store ptr %3, ptr %4, align 8 |
| %5 = call swiftcc i64 @foo(i64 %2, i64 %2) |
| %6 = call swiftcc i64 @foo(i64 %2, i64 %5) |
| %7 = call swiftcc i64 @foo(i64 %5, i64 %2) |
| %8 = call swiftcc i64 @foo(i64 %7, i64 %6) |
| %9 = call swiftcc i64 @foo(i64 %2, i64 %8) |
| %10 = call ptr @llvm.swift.async.context.addr() |
| musttail call swifttailcc void @tail(ptr swiftasync %10, ptr swiftself %1, i64 %2) |
| ret void |
| } |