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// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-linux-gnu -emit-llvm -std=c++20 \
// RUN: -O0 %s -o - | FileCheck %s
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-linux-gnu -emit-llvm -std=c++20 \
// RUN: -fno-inline -O0 %s -o - | FileCheck %s
namespace std {
struct handle {};
struct awaitable {
bool await_ready() noexcept { return true; }
// CHECK-NOT: await_suspend
inline void __attribute__((__always_inline__)) await_suspend(handle) noexcept {}
bool await_resume() noexcept { return true; }
};
template <typename T>
struct coroutine_handle {
static handle from_address(void *address) noexcept { return {}; }
};
template <typename T = void>
struct coroutine_traits {
struct promise_type {
awaitable initial_suspend() { return {}; }
awaitable final_suspend() noexcept { return {}; }
void return_void() {}
T get_return_object() { return T(); }
void unhandled_exception() {}
};
};
} // namespace std
// CHECK-LABEL: @_Z3foov
// CHECK-LABEL: entry:
// CHECK: [[CAST0:%[0-9]+]] = bitcast %"struct.std::awaitable"* %ref.tmp{{.*}} to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* [[CAST0]])
// CHECK: [[CAST1:%[0-9]+]] = bitcast %"struct.std::awaitable"* %ref.tmp{{.*}} to i8*
// CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* [[CAST1]])
// CHECK: [[CAST2:%[0-9]+]] = bitcast %"struct.std::awaitable"* %ref.tmp{{.*}} to i8*
// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* [[CAST2]])
// CHECK: [[CAST3:%[0-9]+]] = bitcast %"struct.std::awaitable"* %ref.tmp{{.*}} to i8*
// CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* [[CAST3]])
void foo() { co_return; }
// Check that bar is not inlined even it's marked as always_inline.
// CHECK-LABEL: define {{.*}} void @_Z3bazv()
// CHECK: call void @_Z3barv(
__attribute__((__always_inline__)) void bar() {
co_return;
}
void baz() {
bar();
co_return;
}
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