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llvm-project/clang/test/CodeGenCoroutines/coro-gro2-exp-namespace.cpp

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[OpaquePtrs][Clang] Add -no-opaque-pointers to tests (NFC) This adds -no-opaque-pointers to clang tests whose output will change when opaque pointers are enabled by default. This is intended to be part of the migration approach described in https://discourse.llvm.org/t/enabling-opaque-pointers-by-default/61322/9. The patch has been produced by replacing %clang_cc1 with %clang_cc1 -no-opaque-pointers for tests that fail with opaque pointers enabled. Worth noting that this doesn't cover all tests, there's a remaining ~40 tests not using %clang_cc1 that will need a followup change. Differential Revision: https://reviews.llvm.org/D123115
2022-04-07 18:03:55 +08:00
// 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
[Coroutines] [Frontend] Lookup in std namespace first Now in libcxx and clang, all the coroutine components are defined in std::experimental namespace. And now the coroutine TS is merged into C++20. So in the working draft like N4892, we could find the coroutine components is defined in std namespace instead of std::experimental namespace. And the coroutine support in clang seems to be relatively stable. So I think it may be suitable to move the coroutine component into the experiment namespace now. This patch would make clang lookup coroutine_traits in std namespace first. For the compatibility consideration, clang would lookup in std::experimental namespace if it can't find definitions in std namespace. So the existing codes wouldn't be break after update compiler. And in case the compiler found std::coroutine_traits and std::experimental::coroutine_traits at the same time, it would emit an error for it. The support for looking up std::experimental::coroutine_traits would be removed in Clang16. Reviewed By: lxfind, Quuxplusone Differential Revision: https://reviews.llvm.org/D108696
2021-11-04 11:50:30 +08:00
#include "Inputs/coroutine-exp-namespace.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() noexcept;
void return_void();
static void unhandled_exception();
};
struct coro {
using promise_type = promise_type<coro>;
coro(coro const &);
struct Impl;
Impl *impl;
};
[C++20] [Coroutines] Implement return value optimization for get_return_object This patch tries to implement RVO for coroutine's return object got from get_return_object. From [dcl.fct.def.coroutine]/p7 we could know that the return value of get_return_object is either a reference or a prvalue. So it makes sense to do copy elision for the return value. The return object should be constructed directly into the storage where they would otherwise be copied/moved to. Test Plan: folly, check-all Reviewed By: junparser Differential revision: https://reviews.llvm.org/D117087
2022-01-10 19:18:33 +08:00
// Verify that the RVO is applied.
[Clang/Test]: Rename enable_noundef_analysis to disable-noundef-analysis and turn it off by default Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
2022-01-16 17:53:11 +08:00
// CHECK-LABEL: define{{.*}} void @_Z1fi(%struct.coro* noalias sret(%struct.coro) align 8 %agg.result, i32 noundef %0)
[Coroutines] [Frontend] Lookup in std namespace first Now in libcxx and clang, all the coroutine components are defined in std::experimental namespace. And now the coroutine TS is merged into C++20. So in the working draft like N4892, we could find the coroutine components is defined in std namespace instead of std::experimental namespace. And the coroutine support in clang seems to be relatively stable. So I think it may be suitable to move the coroutine component into the experiment namespace now. This patch would make clang lookup coroutine_traits in std namespace first. For the compatibility consideration, clang would lookup in std::experimental namespace if it can't find definitions in std namespace. So the existing codes wouldn't be break after update compiler. And in case the compiler found std::coroutine_traits and std::experimental::coroutine_traits at the same time, it would emit an error for it. The support for looking up std::experimental::coroutine_traits would be removed in Clang16. Reviewed By: lxfind, Quuxplusone Differential Revision: https://reviews.llvm.org/D108696
2021-11-04 11:50:30 +08:00
coro f(int) {
[Clang/Test]: Rename enable_noundef_analysis to disable-noundef-analysis and turn it off by default Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
2022-01-16 17:53:11 +08:00
// CHECK: %call = call noalias noundef nonnull i8* @_Znwm(
[Coroutines] [Frontend] Lookup in std namespace first Now in libcxx and clang, all the coroutine components are defined in std::experimental namespace. And now the coroutine TS is merged into C++20. So in the working draft like N4892, we could find the coroutine components is defined in std namespace instead of std::experimental namespace. And the coroutine support in clang seems to be relatively stable. So I think it may be suitable to move the coroutine component into the experiment namespace now. This patch would make clang lookup coroutine_traits in std namespace first. For the compatibility consideration, clang would lookup in std::experimental namespace if it can't find definitions in std namespace. So the existing codes wouldn't be break after update compiler. And in case the compiler found std::coroutine_traits and std::experimental::coroutine_traits at the same time, it would emit an error for it. The support for looking up std::experimental::coroutine_traits would be removed in Clang16. Reviewed By: lxfind, Quuxplusone Differential Revision: https://reviews.llvm.org/D108696
2021-11-04 11:50:30 +08:00
// CHECK-NEXT: br label %[[CoroInit:.*]]
// CHECK: {{.*}}[[CoroInit]]:
// CHECK: call void @{{.*get_return_objectEv}}(%struct.coro* sret(%struct.coro) align 8 %agg.result
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() noexcept;
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.
[Clang/Test]: Rename enable_noundef_analysis to disable-noundef-analysis and turn it off by default Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
2022-01-16 17:53:11 +08:00
// CHECK-LABEL: define{{.*}} void @_Z1hi(%struct.coro_two* noalias sret(%struct.coro_two) align 8 %agg.result, i32 noundef %0)
[Coroutines] [Frontend] Lookup in std namespace first Now in libcxx and clang, all the coroutine components are defined in std::experimental namespace. And now the coroutine TS is merged into C++20. So in the working draft like N4892, we could find the coroutine components is defined in std namespace instead of std::experimental namespace. And the coroutine support in clang seems to be relatively stable. So I think it may be suitable to move the coroutine component into the experiment namespace now. This patch would make clang lookup coroutine_traits in std namespace first. For the compatibility consideration, clang would lookup in std::experimental namespace if it can't find definitions in std namespace. So the existing codes wouldn't be break after update compiler. And in case the compiler found std::coroutine_traits and std::experimental::coroutine_traits at the same time, it would emit an error for it. The support for looking up std::experimental::coroutine_traits would be removed in Clang16. Reviewed By: lxfind, Quuxplusone Differential Revision: https://reviews.llvm.org/D108696
2021-11-04 11:50:30 +08:00
coro_two h(int) {
[Clang/Test]: Rename enable_noundef_analysis to disable-noundef-analysis and turn it off by default Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
2022-01-16 17:53:11 +08:00
// CHECK: %call = call noalias noundef i8* @_ZnwmRKSt9nothrow_t
[Coroutines] [Frontend] Lookup in std namespace first Now in libcxx and clang, all the coroutine components are defined in std::experimental namespace. And now the coroutine TS is merged into C++20. So in the working draft like N4892, we could find the coroutine components is defined in std namespace instead of std::experimental namespace. And the coroutine support in clang seems to be relatively stable. So I think it may be suitable to move the coroutine component into the experiment namespace now. This patch would make clang lookup coroutine_traits in std namespace first. For the compatibility consideration, clang would lookup in std::experimental namespace if it can't find definitions in std namespace. So the existing codes wouldn't be break after update compiler. And in case the compiler found std::coroutine_traits and std::experimental::coroutine_traits at the same time, it would emit an error for it. The support for looking up std::experimental::coroutine_traits would be removed in Clang16. Reviewed By: lxfind, Quuxplusone Differential Revision: https://reviews.llvm.org/D108696
2021-11-04 11:50:30 +08:00
// 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(%struct.coro_two) align 8 %agg.result
// CHECK-NEXT: br label %[[RetLabel:.*]]
// CHECK: {{.*}}[[InitOnSuccess]]:
// CHECK: call void @{{.*get_return_objectEv}}(%struct.coro_two* sret(%struct.coro_two) align 8 %agg.result
// CHECK: [[RetLabel]]:
// CHECK-NEXT: ret void
co_return;
}