forked from OSchip/llvm-project
88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fcoroutines-ts -std=c++14 -emit-llvm %s -o - -disable-llvm-passes | FileCheck %s
|
|
|
|
#include "Inputs/coroutine.h"
|
|
|
|
using namespace std::experimental;
|
|
|
|
namespace std {
|
|
|
|
struct nothrow_t {};
|
|
constexpr nothrow_t nothrow = {};
|
|
|
|
} // end namespace std
|
|
|
|
// Required when get_return_object_on_allocation_failure() is defined by
|
|
// the promise.
|
|
void* operator new(__SIZE_TYPE__ __sz, const std::nothrow_t&) noexcept;
|
|
void operator delete(void* __p, const std::nothrow_t&) noexcept;
|
|
|
|
|
|
template <class RetObject>
|
|
struct promise_type {
|
|
RetObject get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_never final_suspend();
|
|
void return_void();
|
|
static void unhandled_exception();
|
|
};
|
|
|
|
struct coro {
|
|
using promise_type = promise_type<coro>;
|
|
coro(coro const&);
|
|
struct Impl;
|
|
Impl *impl;
|
|
};
|
|
|
|
// Verify that the NRVO is applied to the Gro object.
|
|
// CHECK-LABEL: define void @_Z1fi(%struct.coro* noalias sret %agg.result, i32 %0)
|
|
coro f(int) {
|
|
// CHECK: %call = call i8* @_Znwm(
|
|
// CHECK-NEXT: br label %[[CoroInit:.*]]
|
|
|
|
// CHECK: {{.*}}[[CoroInit]]:
|
|
// CHECK: store i1 false, i1* %gro.active
|
|
// CHECK: call void @{{.*get_return_objectEv}}(%struct.coro* sret %agg.result
|
|
// CHECK-NEXT: store i1 true, i1* %gro.active
|
|
co_return;
|
|
}
|
|
|
|
|
|
template <class RetObject>
|
|
struct promise_type_with_on_alloc_failure {
|
|
static RetObject get_return_object_on_allocation_failure();
|
|
RetObject get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_never final_suspend();
|
|
void return_void();
|
|
static void unhandled_exception();
|
|
};
|
|
|
|
struct coro_two {
|
|
using promise_type = promise_type_with_on_alloc_failure<coro_two>;
|
|
coro_two(coro_two const&);
|
|
struct Impl;
|
|
Impl *impl;
|
|
};
|
|
|
|
// Verify that the NRVO is applied to the Gro object.
|
|
// CHECK-LABEL: define void @_Z1hi(%struct.coro_two* noalias sret %agg.result, i32 %0)
|
|
coro_two h(int) {
|
|
|
|
// CHECK: %call = call i8* @_ZnwmRKSt9nothrow_t
|
|
// CHECK-NEXT: %[[CheckNull:.*]] = icmp ne i8* %call, null
|
|
// CHECK-NEXT: br i1 %[[CheckNull]], label %[[InitOnSuccess:.*]], label %[[InitOnFailure:.*]]
|
|
|
|
// CHECK: {{.*}}[[InitOnFailure]]:
|
|
// CHECK-NEXT: call void @{{.*get_return_object_on_allocation_failureEv}}(%struct.coro_two* sret %agg.result
|
|
// CHECK-NEXT: br label %[[RetLabel:.*]]
|
|
|
|
// CHECK: {{.*}}[[InitOnSuccess]]:
|
|
// CHECK: store i1 false, i1* %gro.active
|
|
// CHECK: call void @{{.*get_return_objectEv}}(%struct.coro_two* sret %agg.result
|
|
// CHECK-NEXT: store i1 true, i1* %gro.active
|
|
|
|
// CHECK: [[RetLabel]]:
|
|
// CHECK-NEXT: ret void
|
|
co_return;
|
|
}
|