forked from OSchip/llvm-project
87 lines
3.3 KiB
C++
87 lines
3.3 KiB
C++
// RUN: %clang_cc1 -std=c++1z -fcoroutines-ts -triple=x86_64-pc-windows-msvc18.0.0 -emit-llvm %s -o - -fexceptions -fcxx-exceptions -disable-llvm-passes | FileCheck %s
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// RUN: %clang_cc1 -std=c++1z -fcoroutines-ts -triple=x86_64-unknown-linux-gnu -emit-llvm -o - %s -fexceptions -fcxx-exceptions -disable-llvm-passes | FileCheck --check-prefix=CHECK-LPAD %s
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namespace std::experimental {
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template <typename R, typename... T> struct coroutine_traits {
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using promise_type = typename R::promise_type;
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};
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template <class Promise = void> struct coroutine_handle;
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template <> struct coroutine_handle<void> {
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static coroutine_handle from_address(void *) noexcept;
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coroutine_handle() = default;
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template <class PromiseType>
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coroutine_handle(coroutine_handle<PromiseType>) noexcept;
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};
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template <class Promise> struct coroutine_handle: coroutine_handle<void> {
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coroutine_handle() = default;
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static coroutine_handle from_address(void *) noexcept;
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};
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}
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struct suspend_always {
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bool await_ready() noexcept;
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void await_suspend(std::experimental::coroutine_handle<>) noexcept;
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void await_resume() noexcept;
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};
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struct coro_t {
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struct promise_type {
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coro_t get_return_object() noexcept;
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suspend_always initial_suspend() noexcept;
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suspend_always final_suspend() noexcept;
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void return_void() noexcept;
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void unhandled_exception() noexcept;
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};
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};
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struct Cleanup { ~Cleanup(); };
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void may_throw();
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coro_t f() {
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Cleanup x;
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may_throw();
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co_return;
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}
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// CHECK: @"?f@@YA?AUcoro_t@@XZ"(
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// CHECK: invoke void @"?may_throw@@YAXXZ"()
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// CHECK: to label %[[CONT:.+]] unwind label %[[EHCLEANUP:.+]]
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// CHECK: [[EHCLEANUP]]:
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// CHECK: %[[INNERPAD:.+]] = cleanuppad within none []
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// CHECK: call void @"??1Cleanup@@QEAA@XZ"(
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// CHECK: cleanupret from %{{.+}} unwind label %[[CATCHDISPATCH:.+]]
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// CHECK: [[CATCHDISPATCH]]:
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// CHECK: catchswitch within none [label %[[CATCHPAD:.+]]] unwind label %[[COROENDBB:.+]]
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// CHECK: [[CATCHPAD]]:
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// CHECK: call void @"?unhandled_exception@promise_type@coro_t@@QEAAXXZ"
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// CHECK: [[COROENDBB]]:
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// CHECK-NEXT: %[[CLPAD:.+]] = cleanuppad within none
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// CHECK-NEXT: call i1 @llvm.coro.end(i8* null, i1 true) [ "funclet"(token %[[CLPAD]]) ]
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// CHECK-NEXT: cleanupret from %[[CLPAD]] unwind label
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// CHECK-LPAD: @_Z1fv(
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// CHECK-LPAD: invoke void @_Z9may_throwv()
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// CHECK-LPAD: to label %[[CONT:.+]] unwind label %[[EHCLEANUP:.+]]
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// CHECK-LPAD: [[EHCLEANUP]]:
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// CHECK-LPAD: landingpad { i8*, i32 }
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// CHECK-LPAD: catch
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// CHECK-LPAD: call void @_ZN7CleanupD1Ev(
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// CHECK-LPAD: call i8* @__cxa_begin_catch
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// CHECK-LPAD: call void @_ZN6coro_t12promise_type19unhandled_exceptionEv
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// CHECK-LPAD: invoke void @__cxa_end_catch()
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// CHECK-LPAD: to label %{{.+}} unwind label %[[UNWINDBB:.+]]
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// CHECK-LPAD: [[UNWINDBB]]:
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// CHECK-LPAD: %[[I1RESUME:.+]] = call i1 @llvm.coro.end(i8* null, i1 true)
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// CHECK-LPAD: br i1 %[[I1RESUME]], label %[[EHRESUME:.+]], label
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// CHECK-LPAD: [[EHRESUME]]:
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// CHECK-LPAD-NEXT: %[[exn:.+]] = load i8*, i8** %exn.slot, align 8
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// CHECK-LPAD-NEXT: %[[sel:.+]] = load i32, i32* %ehselector.slot, align 4
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// CHECK-LPAD-NEXT: %[[val1:.+]] = insertvalue { i8*, i32 } undef, i8* %[[exn]], 0
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// CHECK-LPAD-NEXT: %[[val2:.+]] = insertvalue { i8*, i32 } %[[val1]], i32 %[[sel]], 1
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// CHECK-LPAD-NEXT: resume { i8*, i32 } %[[val2]]
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