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| -rw-r--r-- | llvm/docs/AMDGPUUsage.rst | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/llvm/docs/AMDGPUUsage.rst b/llvm/docs/AMDGPUUsage.rst index 773e0742fa9..5c1430732c1 100644 --- a/llvm/docs/AMDGPUUsage.rst +++ b/llvm/docs/AMDGPUUsage.rst @@ -369,13 +369,42 @@ is conservatively correct for OpenCL. AMDGPU Intrinsics ----------------- -The AMDGPU backend implements the following intrinsics. +The AMDGPU backend implements the following LLVM IR intrinsics. *This section is WIP.* .. TODO List AMDGPU intrinsics +AMDGPU Attributes +----------------- + +The AMDGPU backend supports the following LLVM IR attributes. + + .. table:: AMDGPU LLVM IR Attributes + :name: amdgpu-llvm-ir-attributes-table + + ======================================= ========================================================== + LLVM Attribute Description + ======================================= ========================================================== + "amdgpu-flat-work-group-size"="min,max" Specify the minimum and maximum flat work group sizes that + will be specified when the kernel is dispatched. Generated + by the ``amdgpu_flat_work_group_size`` CLANG attribute [CLANG-ATTR]_. + "amdgpu-implicitarg-num-bytes"="n" Number of kernel argument bytes to add to the kernel + argument block size for the implicit arguments. This + varies by OS and language (for OpenCL see + :ref:`opencl-kernel-implicit-arguments-appended-for-amdhsa-os-table`). + "amdgpu-max-work-group-size"="n" Specify the maximum work-group size that will be specifed + when the kernel is dispatched. + "amdgpu-num-sgpr"="n" Specifies the number of SGPRs to use. Generated by + the ``amdgpu_num_sgpr`` CLANG attribute [CLANG-ATTR]_. + "amdgpu-num-vgpr"="n" Specifies the number of VGPRs to use. Generated by the + ``amdgpu_num_vgpr`` CLANG attribute [CLANG-ATTR]_. + "amdgpu-waves-per-eu"="m,n" Specify the minimum and maximum number of waves per + execution unit. Generated by the ``amdgpu_waves_per_eu`` + CLANG attribute [CLANG-ATTR]_. + ======================================= ========================================================== + Code Object =========== @@ -4343,3 +4372,4 @@ Additional Documentation .. [YAML] `YAML Ain't Markup Language (YAML™) Version 1.2 <http://www.yaml.org/spec/1.2/spec.html>`__ .. [OpenCL] `The OpenCL Specification Version 2.0 <http://www.khronos.org/registry/cl/specs/opencl-2.0.pdf>`__ .. [HRF] `Heterogeneous-race-free Memory Models <http://benedictgaster.org/wp-content/uploads/2014/01/asplos269-FINAL.pdf>`__ +.. [CLANG-ATTR] `Attributes in Clang <http://clang.llvm.org/docs/AttributeReference.html>`__ |
