[region-isolation] Some more diagnostic wordsmithing.

rdar://127580781
(cherry picked from commit e4db879)

Author: gottesmm

include/swift/AST/DiagnosticsSIL.def

@@ -941,7 +941,7 @@ NOTE(sil_referencebinding_inout_binding_here, none,
 //===----------------------------------------------------------------------===//
 
 NOTE(regionbasedisolation_maybe_race, none,
-     "risks concurrent access", ())
+     "potential concurrent access", ())
 ERROR(regionbasedisolation_unknown_pattern, none,
       "pattern that the region based isolation checker does not understand how to check. Please file a bug",
       ())
@@ -951,10 +951,10 @@ ERROR(regionbasedisolation_unknown_pattern, none,
 //
 
 ERROR(regionbasedisolation_transfer_yields_race_no_isolation, none,
-      "sending value of non-Sendable type %0; later accesses could race",
+      "sending value of non-Sendable type %0 with later accesses risks causing data races",
       (Type))
 ERROR(regionbasedisolation_transfer_yields_race_with_isolation, none,
-      "sending value of non-Sendable type %0 from %1 context to %2 context; later accesses could race",
+      "sending value of non-Sendable type %0 with later accesses from %1 context to %2 context risks causing data races",
       (Type, ActorIsolation, ActorIsolation))
 ERROR(regionbasedisolation_isolated_capture_yields_race, none,
       "%1 closure captures value of non-Sendable type %0 from %2 context; later accesses to value could race",
@@ -963,7 +963,7 @@ ERROR(regionbasedisolation_transfer_yields_race_stronglytransferred_binding, non
       "value of non-Sendable type %0 accessed after being transferred; later accesses could race",
       (Type))
 ERROR(regionbasedisolation_arg_transferred, none,
-      "sending %0 value of type %1 to %2 context; later accesses to value could race",
+      "sending %0 value of type %1 with later accesses to %2 context risks causing data races",
       (StringRef, Type, ActorIsolation))
 ERROR(regionbasedisolation_arg_passed_to_strongly_transferred_param, none,
       "%0 value of type %1 passed as a strongly transferred parameter; later accesses could race",

test/ClangImporter/transferring.swift

@@ -29,12 +29,12 @@ func funcTestTransferringResult() async {
   let y2 = returnUserDefinedFromGlobalFunction(x2)
   await transferToMain(x2) // expected-error {{sending 'x2' risks causing data races}}
   // expected-note @-1 {{sending 'x2' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and local nonisolated uses}}
-  useValue(y2) // expected-note {{risks concurrent access}}
+  useValue(y2) // expected-note {{potential concurrent access}}
 }
 
 func funcTestTransferringArg() async {
   let x = NonSendableCStruct()
   transferUserDefinedIntoGlobalFunction(x) // expected-error {{sending 'x' risks causing data races}}
   // expected-note @-1 {{'x' used after being passed as a transferring parameter}}
-  useValue(x) // expected-note {{risks concurrent access}}
+  useValue(x) // expected-note {{potential concurrent access}}
 }

test/ClangImporter/transferring_objc.swift

@@ -27,7 +27,7 @@ func methodTestTransferringArg() async {
   let s = NSObject()
   let _ = x.getResultWithTransferringArgument(s)  // expected-error {{sending 's' risks causing data races}}
   // expected-note @-1 {{'s' used after being passed as a transferring parameter; Later uses could race}}
-  useValue(s) // expected-note {{risks concurrent access}}
+  useValue(s) // expected-note {{potential concurrent access}}
 }
 
 // Make sure we just ignore the swift_attr if it is applied to something like a
@@ -47,12 +47,12 @@ func funcTestTransferringResult() async {
   let y2 = returnNSObjectFromGlobalFunction(x2)
   await transferToMain(x2) // expected-error {{sending 'x2' risks causing data races}}
   // expected-note @-1 {{sending 'x2' to main actor-isolated global function 'transferToMain' risks causing data races between main actor-isolated and local nonisolated uses}}
-  useValue(y2) // expected-note {{risks concurrent access}}
+  useValue(y2) // expected-note {{potential concurrent access}}
 }
 
 func funcTestTransferringArg() async {
   let x = NSObject()
   transferNSObjectToGlobalFunction(x) // expected-error {{sending 'x' risks causing data races}}
   // expected-note @-1 {{'x' used after being passed as a transferring parameter; Later uses could race}}
-  useValue(x) // expected-note {{risks concurrent access}}
+  useValue(x) // expected-note {{potential concurrent access}}
 }

test/Concurrency/sendable_checking.swift

@@ -282,7 +282,7 @@ func testNonSendableBaseArg() async {
 
   _ = await t.x
   // expected-warning @-1 {{non-sendable type 'NonSendable' passed in implicitly asynchronous call to main actor-isolated property 'x' cannot cross actor boundary}}
-  // expected-tns-note@-2 {{risks concurrent access}}
+  // expected-tns-note@-2 {{potential concurrent access}}
 }
 
 @available(SwiftStdlib 5.1, *)

test/Concurrency/transfernonsendable.sil

@@ -112,7 +112,7 @@ bb0(%0 : $*{ var NonSendableKlass }):
 
   %f = function_ref @transferIndirect : $@convention(thin) @async <τ_0_0> (@in_guaranteed τ_0_0) -> ()
   apply [caller_isolation=nonisolated] [callee_isolation=global_actor] %f<NonSendableKlass>(%3) : $@convention(thin) @async <τ_0_0> (@in_guaranteed τ_0_0) -> ()
-  // expected-warning @-1 {{sending task-isolated value of type 'NonSendableKlass' to global actor '<null>'-isolated context}}
+  // expected-warning @-1 {{}}
   destroy_value %1 : ${ var NonSendableKlass }
 
   %9999 = tuple ()
@@ -157,10 +157,10 @@ bb0:
 
   %f2 = function_ref @transferIndirect : $@convention(thin) @async <τ_0_0> (@in_guaranteed τ_0_0) -> ()
   apply [caller_isolation=nonisolated] [callee_isolation=global_actor] %f2<NonSendableKlass>(%1) : $@convention(thin) @async <τ_0_0> (@in_guaranteed τ_0_0) -> ()
-  // expected-warning @-1 {{sending value of non-Sendable type 'NonSendableKlass' from nonisolated context to global actor '<null>'-isolated context}}
+  // expected-warning @-1 {{}}
   %useIndirect = function_ref @useIndirect : $@convention(thin) <τ_0_0> (@in_guaranteed τ_0_0) -> ()
   apply %useIndirect<NonSendableKlass>(%1) : $@convention(thin) <τ_0_0> (@in_guaranteed τ_0_0) -> ()
-  // expected-note @-1 {{risks concurrent access}}
+  // expected-note @-1 {{potential concurrent access}}
 
   destroy_addr %1 : $*NonSendableKlass
   dealloc_stack %1 : $*NonSendableKlass
@@ -292,7 +292,7 @@ bb0(%0 : @guaranteed $MyActor):
   %3 = class_method %0 : $MyActor, #MyActor.klass!getter : (isolated MyActor) -> () -> NonSendableKlass, $@convention(method) (@sil_isolated @guaranteed MyActor) -> @owned NonSendableKlass
   %4 = apply %3(%0) : $@convention(method) (@sil_isolated @guaranteed MyActor) -> @owned NonSendableKlass
   %5 = class_method %4 : $NonSendableKlass, #NonSendableKlass.asyncCall : (NonSendableKlass) -> () async -> (), $@convention(method) @async (@guaranteed NonSendableKlass) -> ()
-  %6 = apply [caller_isolation=nonisolated] [callee_isolation=actor_instance] %5(%4) : $@convention(method) @async (@guaranteed NonSendableKlass) -> () // expected-warning {{sending 'self'-isolated value of type 'NonSendableKlass' to actor-isolated context; later accesses to value could race}}
+  %6 = apply [caller_isolation=nonisolated] [callee_isolation=actor_instance] %5(%4) : $@convention(method) @async (@guaranteed NonSendableKlass) -> () // expected-warning {{}}
   destroy_value %4 : $NonSendableKlass
   hop_to_executor %0 : $MyActor
   %9 = tuple ()
@@ -313,7 +313,7 @@ bb0(%0 : @guaranteed $MyActor):
   %11 = alloc_stack $NonSendableKlass
   %12 = store_borrow %6 to %11 : $*NonSendableKlass
   %13 = function_ref @transferIndirect : $@convention(thin) @async <τ_0_0> (@in_guaranteed τ_0_0) -> ()
-  %14 = apply [caller_isolation=actor_instance] [callee_isolation=global_actor] %13<NonSendableKlass>(%12) : $@convention(thin) @async <τ_0_0> (@in_guaranteed τ_0_0) -> () // expected-warning {{sending 'self'-isolated value of type 'NonSendableKlass' to global actor '<null>'-isolated context}}
+  %14 = apply [caller_isolation=actor_instance] [callee_isolation=global_actor] %13<NonSendableKlass>(%12) : $@convention(thin) @async <τ_0_0> (@in_guaranteed τ_0_0) -> () // expected-warning {{}}
   end_borrow %12 : $*NonSendableKlass
   dealloc_stack %11 : $*NonSendableKlass
   hop_to_executor %0 : $MyActor