[clang] coroutine: generate valid mangled name in CodeGenFunction::generateAwaitSuspendWrapper (#89731)

Fixes https://github.com/llvm/llvm-project/issues/89723

4 files changed, 11 insertions, 13 deletions

diff --git a/clang/lib/CodeGen/CGCoroutine.cpp b/clang/lib/CodeGen/CGCoroutine.cpp
index 93ca711f716f..567e85a02dc6 100644
--- a/clang/lib/CodeGen/CGCoroutine.cpp
+++ b/clang/lib/CodeGen/CGCoroutine.cpp
@@ -413,10 +413,8 @@ llvm::Function *
 CodeGenFunction::generateAwaitSuspendWrapper(Twine const &CoroName,
                                              Twine const &SuspendPointName,
                                              CoroutineSuspendExpr const &S) {
-  std::string FuncName = "__await_suspend_wrapper_";
-  FuncName += CoroName.str();
-  FuncName += '_';
-  FuncName += SuspendPointName.str();
+  std::string FuncName =
+      (CoroName + ".__await_suspend_wrapper__" + SuspendPointName).str();
 
   ASTContext &C = getContext();
 
diff --git a/clang/test/CodeGenCoroutines/coro-await.cpp b/clang/test/CodeGenCoroutines/coro-await.cpp
index 75851d8805bb..65bfb0994688 100644
--- a/clang/test/CodeGenCoroutines/coro-await.cpp
+++ b/clang/test/CodeGenCoroutines/coro-await.cpp
@@ -73,7 +73,7 @@ extern "C" void f0() {
   // ---------------------------
   // Call coro.await.suspend
   // ---------------------------
-  // CHECK-NEXT: call void @llvm.coro.await.suspend.void(ptr %[[AWAITABLE]], ptr %[[FRAME]], ptr @__await_suspend_wrapper_f0_await)
+  // CHECK-NEXT: call void @llvm.coro.await.suspend.void(ptr %[[AWAITABLE]], ptr %[[FRAME]], ptr @f0.__await_suspend_wrapper__await)
   // -------------------------
   // Generate a suspend point:
   // -------------------------
@@ -100,7 +100,7 @@ extern "C" void f0() {
   // CHECK: call i8 @llvm.coro.suspend(token %[[FINALSP_ID]], i1 true)
 
   // Await suspend wrapper
-  // CHECK: define{{.*}} @__await_suspend_wrapper_f0_await(ptr {{[^,]*}} %[[AWAITABLE_ARG:.+]], ptr {{[^,]*}} %[[FRAME_ARG:.+]])
+  // CHECK: define{{.*}} @f0.__await_suspend_wrapper__await(ptr {{[^,]*}} %[[AWAITABLE_ARG:.+]], ptr {{[^,]*}} %[[FRAME_ARG:.+]])
   // CHECK: store ptr %[[AWAITABLE_ARG]], ptr %[[AWAITABLE_TMP:.+]],
   // CHECK: store ptr %[[FRAME_ARG]], ptr %[[FRAME_TMP:.+]],
   // CHECK: %[[AWAITABLE:.+]] = load ptr, ptr %[[AWAITABLE_TMP]]
@@ -149,7 +149,7 @@ extern "C" void f1(int) {
   // ---------------------------
   // Call coro.await.suspend
   // ---------------------------
-  // CHECK-NEXT: %[[YES:.+]] = call i1 @llvm.coro.await.suspend.bool(ptr %[[AWAITABLE]], ptr %[[FRAME]], ptr @__await_suspend_wrapper_f1_yield)
+  // CHECK-NEXT: %[[YES:.+]] = call i1 @llvm.coro.await.suspend.bool(ptr %[[AWAITABLE]], ptr %[[FRAME]], ptr @f1.__await_suspend_wrapper__yield)
   // -------------------------------------------
   // See if await_suspend decided not to suspend
   // -------------------------------------------
@@ -162,7 +162,7 @@ extern "C" void f1(int) {
   // CHECK:     call void @_ZN13suspend_maybe12await_resumeEv(ptr {{[^,]*}} %[[AWAITABLE]])
 
   // Await suspend wrapper
-  // CHECK: define {{.*}} i1 @__await_suspend_wrapper_f1_yield(ptr {{[^,]*}} %[[AWAITABLE_ARG:.+]], ptr {{[^,]*}} %[[FRAME_ARG:.+]])
+  // CHECK: define {{.*}} i1 @f1.__await_suspend_wrapper__yield(ptr {{[^,]*}} %[[AWAITABLE_ARG:.+]], ptr {{[^,]*}} %[[FRAME_ARG:.+]])
   // CHECK: store ptr %[[AWAITABLE_ARG]], ptr %[[AWAITABLE_TMP:.+]],
   // CHECK: store ptr %[[FRAME_ARG]], ptr %[[FRAME_TMP:.+]],
   // CHECK: %[[AWAITABLE:.+]] = load ptr, ptr %[[AWAITABLE_TMP]]
@@ -370,7 +370,7 @@ extern "C" void TestTailcall() {
   // ---------------------------
   // Call coro.await.suspend
   // ---------------------------
-  // CHECK-NEXT: %[[RESUMED:.+]] = call ptr @llvm.coro.await.suspend.handle(ptr %[[AWAITABLE]], ptr %[[FRAME]], ptr @__await_suspend_wrapper_TestTailcall_await)
+  // CHECK-NEXT: %[[RESUMED:.+]] = call ptr @llvm.coro.await.suspend.handle(ptr %[[AWAITABLE]], ptr %[[FRAME]], ptr @TestTailcall.__await_suspend_wrapper__await)
   // CHECK-NEXT: call void @llvm.coro.resume(ptr %[[RESUMED]])
   // CHECK-NEXT: %[[OUTCOME:.+]] = call i8 @llvm.coro.suspend(token %[[SUSPEND_ID]], i1 false)
   // CHECK-NEXT: switch i8 %[[OUTCOME]], label %[[RET_BB:.+]] [
@@ -379,7 +379,7 @@ extern "C" void TestTailcall() {
   // CHECK-NEXT: ]
 
   // Await suspend wrapper
-  // CHECK: define {{.*}} ptr @__await_suspend_wrapper_TestTailcall_await(ptr {{[^,]*}} %[[AWAITABLE_ARG:.+]], ptr {{[^,]*}} %[[FRAME_ARG:.+]])
+  // CHECK: define {{.*}} ptr @TestTailcall.__await_suspend_wrapper__await(ptr {{[^,]*}} %[[AWAITABLE_ARG:.+]], ptr {{[^,]*}} %[[FRAME_ARG:.+]])
   // CHECK: store ptr %[[AWAITABLE_ARG]], ptr %[[AWAITABLE_TMP:.+]],
   // CHECK: store ptr %[[FRAME_ARG]], ptr %[[FRAME_TMP:.+]],
   // CHECK: %[[AWAITABLE:.+]] = load ptr, ptr %[[AWAITABLE_TMP]]
diff --git a/clang/test/CodeGenCoroutines/coro-dwarf.cpp b/clang/test/CodeGenCoroutines/coro-dwarf.cpp
index 2c9c827e6753..f951b63dc117 100644
--- a/clang/test/CodeGenCoroutines/coro-dwarf.cpp
+++ b/clang/test/CodeGenCoroutines/coro-dwarf.cpp
@@ -71,14 +71,14 @@ void f_coro(int val, MoveOnly moParam, MoveAndCopy mcParam) {
 // CHECK: !{{[0-9]+}} = !DILocalVariable(name: "mcParam", arg: 3, scope: ![[SP]], file: !{{[0-9]+}}, line: {{[0-9]+}}, type: !{{[0-9]+}})
 // CHECK: !{{[0-9]+}} = !DILocalVariable(name: "__promise",
 
-// CHECK: !{{[0-9]+}} = distinct !DISubprogram(linkageName: "__await_suspend_wrapper__Z6f_coroi8MoveOnly11MoveAndCopy_init"
+// CHECK: !{{[0-9]+}} = distinct !DISubprogram(linkageName: "_Z6f_coroi8MoveOnly11MoveAndCopy.__await_suspend_wrapper__init"
 // CHECK-NEXT: !{{[0-9]+}} = !DIFile
 // CHECK-NEXT: !{{[0-9]+}} = !DISubroutineType
 // CHECK-NEXT: !{{[0-9]+}} = !DILocalVariable(arg: 1,
 // CHECK-NEXT: !{{[0-9]+}} = !DILocation
 // CHECK-NEXT: !{{[0-9]+}} = !DILocalVariable(arg: 2,
 
-// CHECK: !{{[0-9]+}} = distinct !DISubprogram(linkageName: "__await_suspend_wrapper__Z6f_coroi8MoveOnly11MoveAndCopy_final"
+// CHECK: !{{[0-9]+}} = distinct !DISubprogram(linkageName: "_Z6f_coroi8MoveOnly11MoveAndCopy.__await_suspend_wrapper__final"
 // CHECK-NEXT: !{{[0-9]+}} = !DILocalVariable(arg: 1,
 // CHECK-NEXT: !{{[0-9]+}} = !DILocation
 // CHECK-NEXT: !{{[0-9]+}} = !DILocalVariable(arg: 2,
diff --git a/clang/test/CodeGenCoroutines/pr65054.cpp b/clang/test/CodeGenCoroutines/pr65054.cpp
index 7af9c04fca18..2d8b6dfe18d5 100644
--- a/clang/test/CodeGenCoroutines/pr65054.cpp
+++ b/clang/test/CodeGenCoroutines/pr65054.cpp
@@ -48,6 +48,6 @@ MyTask FooBar() {
 }
 
 // CHECK-O0: define{{.*}}@_Z6FooBarv.resume
-// CHECK-O0: call{{.*}}@__await_suspend_wrapper__Z6FooBarv_await(
+// CHECK-O0: call{{.*}}@_Z6FooBarv.__await_suspend_wrapper__await(
 // CHECK-O0-NOT: store
 // CHECK-O0: ret void