clang/test/CodeGenCoroutines/coro-newpm-pipeline.cpp

   1 // Tests that coroutine passes are added to and run by the new pass manager
   2 // pipeline, at -O0 and above.
   3
   4 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm-bc -o /dev/null \
   5 // RUN:   -fdebug-pass-manager -std=c++20 \
   6 // RUN:   -O0 %s 2>&1 | FileCheck %s --check-prefixes=CHECK-ALL
   7 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm-bc -o /dev/null \
   8 // RUN:   -fdebug-pass-manager -std=c++20 \
   9 // RUN:   -O1 %s 2>&1 | FileCheck %s --check-prefixes=CHECK-ALL,CHECK-OPT
  10 //
  11 // CHECK-ALL: Running pass:{{.*}}CoroEarlyPass
  12 //
  13 // CHECK-ALL: Running pass: CoroSplitPass on (_Z3foov)
  14 // CHECK-OPT: Running pass:{{.*}}CoroElidePass{{.*}} on {{.*}}_Z3foov{{.*}}
  15 //
  16 // CHECK-ALL: Running pass:{{.*}}CoroCleanupPass
  17
  18 namespace std {
  19
  20 struct handle {};
  21
  22 struct awaitable {
  23   bool await_ready() noexcept { return false; }
  24   void await_suspend(handle) noexcept {}
  25   bool await_resume() noexcept { return true; }
  26 };
  27
  28 template <typename T> struct coroutine_handle {
  29   static handle from_address(void *address) noexcept { return {}; }
  30 };
  31
  32 template <typename T = void> struct coroutine_traits {
  33   struct promise_type {
  34     awaitable initial_suspend() { return {}; }
  35     awaitable final_suspend() noexcept { return {}; }
  36     void return_void() {}
  37     T get_return_object() { return T(); }
  38     void unhandled_exception() {}
  39   };
  40 };
  41 } // namespace std
  42
  43 void foo() { co_return; }