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//===---------------- AMDGPUAddrSpace.h -------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file
/// AMDGPU address space definition
///
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_AMDGPUADDRSPACE_H
#define LLVM_SUPPORT_AMDGPUADDRSPACE_H
namespace llvm {
/// OpenCL uses address spaces to differentiate between
/// various memory regions on the hardware. On the CPU
/// all of the address spaces point to the same memory,
/// however on the GPU, each address space points to
/// a separate piece of memory that is unique from other
/// memory locations.
namespace AMDGPUAS {
enum : unsigned {
// The maximum value for flat, generic, local, private, constant and region.
MAX_AMDGPU_ADDRESS = 9,
FLAT_ADDRESS = 0, ///< Address space for flat memory.
GLOBAL_ADDRESS = 1, ///< Address space for global memory (RAT0, VTX0).
REGION_ADDRESS = 2, ///< Address space for region memory. (GDS)
CONSTANT_ADDRESS = 4, ///< Address space for constant memory (VTX2).
LOCAL_ADDRESS = 3, ///< Address space for local memory.
PRIVATE_ADDRESS = 5, ///< Address space for private memory.
CONSTANT_ADDRESS_32BIT = 6, ///< Address space for 32-bit constant memory.
BUFFER_FAT_POINTER = 7, ///< Address space for 160-bit buffer fat pointers.
///< Not used in backend.
BUFFER_RESOURCE = 8, ///< Address space for 128-bit buffer resources.
BUFFER_STRIDED_POINTER = 9, ///< Address space for 192-bit fat buffer
///< pointers with an additional index.
/// Internal address spaces. Can be freely renumbered.
STREAMOUT_REGISTER = 128, ///< Address space for GS NGG Streamout registers.
/// end Internal address spaces.
/// Address space for direct addressable parameter memory (CONST0).
PARAM_D_ADDRESS = 6,
/// Address space for indirect addressable parameter memory (VTX1).
PARAM_I_ADDRESS = 7,
// Do not re-order the CONSTANT_BUFFER_* enums. Several places depend on
// this order to be able to dynamically index a constant buffer, for
// example:
//
// ConstantBufferAS = CONSTANT_BUFFER_0 + CBIdx
CONSTANT_BUFFER_0 = 8,
CONSTANT_BUFFER_1 = 9,
CONSTANT_BUFFER_2 = 10,
CONSTANT_BUFFER_3 = 11,
CONSTANT_BUFFER_4 = 12,
CONSTANT_BUFFER_5 = 13,
CONSTANT_BUFFER_6 = 14,
CONSTANT_BUFFER_7 = 15,
CONSTANT_BUFFER_8 = 16,
CONSTANT_BUFFER_9 = 17,
CONSTANT_BUFFER_10 = 18,
CONSTANT_BUFFER_11 = 19,
CONSTANT_BUFFER_12 = 20,
CONSTANT_BUFFER_13 = 21,
CONSTANT_BUFFER_14 = 22,
CONSTANT_BUFFER_15 = 23,
// Some places use this if the address space can't be determined.
UNKNOWN_ADDRESS_SPACE = ~0u,
};
} // end namespace AMDGPUAS
} // end namespace llvm
#endif // LLVM_SUPPORT_AMDGPUADDRSPACE_H
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