forked from OSchip/llvm-project
51 lines
1.9 KiB
C++
51 lines
1.9 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -std=c++20 \
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// RUN: -fexperimental-new-pass-manager -O0 %s -o - | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -std=c++20 \
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// RUN: -fexperimental-new-pass-manager -fno-inline -O0 %s -o - | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -std=c++20 \
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// RUN: -O0 %s -o - | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -std=c++20 \
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// RUN: -fno-inline -O0 %s -o - | FileCheck %s
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namespace std {
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struct handle {};
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struct awaitable {
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bool await_ready() noexcept { return true; }
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// CHECK-NOT: await_suspend
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inline void __attribute__((__always_inline__)) await_suspend(handle) noexcept {}
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bool await_resume() noexcept { return true; }
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};
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template <typename T>
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struct coroutine_handle {
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static handle from_address(void *address) noexcept { return {}; }
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};
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template <typename T = void>
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struct coroutine_traits {
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struct promise_type {
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awaitable initial_suspend() { return {}; }
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awaitable final_suspend() noexcept { return {}; }
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void return_void() {}
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T get_return_object() { return T(); }
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void unhandled_exception() {}
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};
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};
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} // namespace std
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// CHECK-LABEL: @_Z3foov
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// CHECK-LABEL: entry:
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// CHECK: [[CAST0:%[0-9]+]] = bitcast %"struct.std::awaitable"* %ref.tmp{{.*}} to i8*
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// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* [[CAST0]])
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// CHECK: [[CAST1:%[0-9]+]] = bitcast %"struct.std::awaitable"* %ref.tmp{{.*}} to i8*
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// CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* [[CAST1]])
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// CHECK: [[CAST2:%[0-9]+]] = bitcast %"struct.std::awaitable"* %ref.tmp{{.*}} to i8*
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// CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 1, i8* [[CAST2]])
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// CHECK: [[CAST3:%[0-9]+]] = bitcast %"struct.std::awaitable"* %ref.tmp{{.*}} to i8*
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// CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 1, i8* [[CAST3]])
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void foo() { co_return; }
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