ef9ec4bbcc
CUDA and HIP have kernel attributes to tune the code generation (in the backend). To reuse this functionality for OpenMP target regions we introduce the `ompx_attribute` clause that takes these kernel attributes and emits code as if they had been attached to the kernel fuction (which is implicitly generated). To limit the impact, we only support three kernel attributes: `amdgpu_waves_per_eu`, for AMDGPU `amdgpu_flat_work_group_size`, for AMDGPU `launch_bounds`, for NVPTX The existing implementations of those attributes are used for error checking and code generation. `ompx_attribute` can be attached to any executable target region and it can hold more than one kernel attribute. Differential Revision: https://reviews.llvm.org/D156184
48 lines
4.0 KiB
C++
48 lines
4.0 KiB
C++
// RUN: %clang_cc1 -verify=expected -fopenmp -ferror-limit 100 -o - -std=c++11 %s -Wuninitialized
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void bad() {
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#pragma omp target data ompx_attribute() // expected-error {{unexpected OpenMP clause 'ompx_attribute' in directive '#pragma omp target data'}}
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#pragma omp target data ompx_attribute(__attribute__((launch_bounds(1, 2)))) // expected-error {{unexpected OpenMP clause 'ompx_attribute' in directive '#pragma omp target data'}} expected-error {{expected at least one 'map', 'use_device_ptr', or 'use_device_addr' clause for '#pragma omp target data'}}
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#pragma omp target ompx_attribute()
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{}
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#pragma omp target ompx_attribute(__attribute__(()))
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{}
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#pragma omp target ompx_attribute(__attribute__((pure))) // expected-warning {{'ompx_attribute' clause only allows 'amdgpu_flat_work_group_size', 'amdgpu_waves_per_eu', and 'launch_bounds'; 'pure' is ignored}}
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{}
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#pragma omp target ompx_attribute(__attribute__((pure,amdgpu_waves_per_eu(1, 2), const))) // expected-warning {{'ompx_attribute' clause only allows 'amdgpu_flat_work_group_size', 'amdgpu_waves_per_eu', and 'launch_bounds'; 'pure' is ignored}} expected-warning {{'ompx_attribute' clause only allows 'amdgpu_flat_work_group_size', 'amdgpu_waves_per_eu', and 'launch_bounds'; 'const' is ignored}}
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{}
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#pragma omp target ompx_attribute(__attribute__((amdgpu_waves_per_eu()))) // expected-error {{'amdgpu_waves_per_eu' attribute takes at least 1 argument}}
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{}
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#pragma omp target ompx_attribute(__attribute__((amdgpu_waves_per_eu(1, 2, 3)))) // expected-error {{'amdgpu_waves_per_eu' attribute takes no more than 2 arguments}}
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{}
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#pragma omp target ompx_attribute(__attribute__((amdgpu_flat_work_group_size(1)))) // expected-error {{'amdgpu_flat_work_group_size' attribute requires exactly 2 arguments}}
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{}
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#pragma omp target ompx_attribute(__attribute__((amdgpu_flat_work_group_size(1, 2, 3,)))) // expected-error {{expected expression}}
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{}
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#pragma omp target ompx_attribute([[clang::amdgpu_waves_per_eu(1, 2, 3)]]) // expected-error {{'amdgpu_waves_per_eu' attribute takes no more than 2 arguments}}
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{}
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#pragma omp target ompx_attribute([[clang::unknown]]) // expected-warning {{'ompx_attribute' clause only allows 'amdgpu_flat_work_group_size', 'amdgpu_waves_per_eu', and 'launch_bounds'; 'unknown' is ignored}}
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{}
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#pragma omp target ompx_attribute(baz) // expected-error {{expected ')'}} expected-note {{to match this '('}}
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{}
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#pragma omp target ompx_attribute(__attribute__((launch_bounds(1))))
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{}
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#pragma omp target ompx_attribute(__attribute__((launch_bounds(bad)))) // expected-error {{'launch_bounds' attribute requires parameter 0 to be an integer constant}}
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{}
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#pragma omp target ompx_attribute(__attribute__((launch_bounds(1, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-error {{expected ')'}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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{}
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#pragma omp target ompx_attribute(__attribute__((launch_bounds(1, 2 // expected-error {{expected ')'}} expected-error {{expected ')'}} expected-error {{expected ')'}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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{}
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#pragma omp target ompx_attribute(__attribute__((launch_bounds(1, 2) // expected-error {{expected ')'}} expected-error {{expected ')'}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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{}
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#pragma omp target ompx_attribute(__attribute__((launch_bounds(1, 2)) // expected-error {{expected ')'}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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{}
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#pragma omp target ompx_attribute(__attribute__((launch_bounds(1, 2))) // expected-error {{expected ')'}} expected-note {{to match this '('}}
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{}
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#pragma omp target ompx_attribute(__attribute__((launch_bounds(1, -3)))) // expected-warning {{'launch_bounds' attribute parameter 1 is negative and will be ignored}}
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{}
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#pragma omp target ompx_attribute(__attribute__((amdgpu_waves_per_eu(10, 1)))) // expected-error {{'amdgpu_waves_per_eu' attribute argument is invalid: min must not be greater than max}}
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{}
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}
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