forked from OSchip/llvm-project
41 lines
1.5 KiB
C++
41 lines
1.5 KiB
C++
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-linux-gnu -fcoroutines-ts -std=c++14 -emit-llvm %s -o - -disable-llvm-passes | FileCheck %s
|
|
|
|
#include "Inputs/coroutine-exp-namespace.h"
|
|
|
|
using namespace std::experimental;
|
|
|
|
struct coro {
|
|
struct promise_type {
|
|
coro get_return_object();
|
|
suspend_always initial_suspend();
|
|
suspend_never final_suspend() noexcept;
|
|
void return_void();
|
|
static void unhandled_exception();
|
|
};
|
|
};
|
|
|
|
extern "C" coro f(int) { co_return; }
|
|
// Verify that cleanup.dest.slot is eliminated in a coroutine.
|
|
// CHECK-LABEL: f(
|
|
// CHECK: %[[INIT_SUSPEND:.+]] = call i8 @llvm.coro.suspend(
|
|
// CHECK-NEXT: switch i8 %[[INIT_SUSPEND]], label
|
|
// CHECK-NEXT: i8 0, label %[[INIT_READY:.+]]
|
|
// CHECK-NEXT: i8 1, label %[[INIT_CLEANUP:.+]]
|
|
// CHECK-NEXT: ]
|
|
// CHECK: %[[CLEANUP_DEST0:.+]] = phi i32 [ 0, %[[INIT_READY]] ], [ 2, %[[INIT_CLEANUP]] ]
|
|
|
|
// CHECK: %[[FINAL_SUSPEND:.+]] = call i8 @llvm.coro.suspend(
|
|
// CHECK-NEXT: switch i8 %{{.*}}, label %coro.ret [
|
|
// CHECK-NEXT: i8 0, label %[[FINAL_READY:.+]]
|
|
// CHECK-NEXT: i8 1, label %[[FINAL_CLEANUP:.+]]
|
|
// CHECK-NEXT: ]
|
|
|
|
// CHECK: call void @_ZNSt12experimental13coroutines_v113suspend_never12await_resumeEv(
|
|
// CHECK: %[[CLEANUP_DEST1:.+]] = phi i32 [ 0, %[[FINAL_READY]] ], [ 2, %[[FINAL_CLEANUP]] ]
|
|
// CHECK: %[[CLEANUP_DEST2:.+]] = phi i32 [ %[[CLEANUP_DEST0]], %{{.+}} ], [ %[[CLEANUP_DEST1]], %{{.+}} ], [ 0, %{{.+}} ]
|
|
// CHECK: call i8* @llvm.coro.free(
|
|
// CHECK: switch i32 %[[CLEANUP_DEST2]], label %{{.+}} [
|
|
// CHECK-NEXT: i32 0
|
|
// CHECK-NEXT: i32 2
|
|
// CHECK-NEXT: ]
|