Merge pull request #65093 from eeckstein/async-tests-5.9

[5.9] test: adjust tests for mandatory tail calls on Win64

Author: kavon

test/IRGen/async/hop_to_executor.sil

@@ -20,8 +20,7 @@ import _Concurrency
 // CHECK-arm64e: call {{.*}} @llvm.coro.suspend.async{{.*}}(i32 0, i8* [[RESUME]], i8* bitcast (i8* (i8*)* @__swift_async_resume_get_context to i8*), i8* bitcast (void (i8*, [[INT]], [[INT]], %swift.context*)* @test_simple.1 to i8*), i8* [[RESUME]], [[INT]] %1, [[INT]] %2, %swift.context* {{%[0-9]+}})
 // CHECK: [[RET_CONTINUATION:%.*]] = bitcast void (%swift.context*)* {{.*}} to i8*
 // CHECK:  call i1 (i8*, i1, ...) @llvm.coro.end.async(i8* {{.*}}, i1 false, void (i8*, %swift.context*)* @[[TAIL_CALL_FUNC:.*]], i8* [[RET_CONTINUATION]]
-// CHECK-WIN: ret void
-// CHECK-SYSV: unreachable
+// CHECK: unreachable
 
 sil @test_simple : $@async (@guaranteed Optional<Builtin.Executor>) -> () {
 bb0(%0 : $Optional<Builtin.Executor>):

test/IRGen/async/non_musttail_target.sil

@@ -2,7 +2,7 @@
 // RUN: %target-swift-frontend -disable-legacy-type-info -parse-stdlib %s -disable-llvm-optzns -disable-swift-specific-llvm-optzns -disable-objc-interop -module-name main -emit-ir -o - | %FileCheck %s
 
 // REQUIRES: concurrency
-// REQUIRES: OS=wasi || OS=windows-msvc
+// REQUIRES: OS=wasi
 
 sil_stage canonical
 

test/IRGen/async/run-call-dynamic-void_to_void.swift

@@ -10,9 +10,6 @@
 // REQUIRES: concurrency_runtime
 // UNSUPPORTED: back_deployment_runtime
 
-// Windows does not do swiftailcc
-// XFAIL: OS=windows-msvc
-
 import _Concurrency
 
 

test/IRGen/async_dynamic_replacement.swift

@@ -1,8 +1,5 @@
 // RUN: %target-swift-frontend %s -emit-ir -disable-availability-checking -disable-objc-interop | %FileCheck %s
 
-// Windows does not do swiftailcc
-// XFAIL: OS=windows-msvc
-
 // REQUIRES: concurrency
 
 public dynamic func number() async -> Int {