OpenCL uses address spaces to differentiate between various memory regions on the hardware. More...

Enumerations

enum : unsigned {
MAX_AMDGPU_ADDRESS = 15 , FLAT_ADDRESS = 0 , GLOBAL_ADDRESS = 1 , REGION_ADDRESS = 2 ,
LOCAL_ADDRESS = 3 , CONSTANT_ADDRESS = 4 , PRIVATE_ADDRESS = 5 , CONSTANT_ADDRESS_32BIT = 6 ,
BUFFER_FAT_POINTER = 7 , BUFFER_RESOURCE = 8 , BUFFER_STRIDED_POINTER = 9 , RESERVED_ADDRESS_SPACE_10 = 10 ,
RESERVED_ADDRESS_SPACE_11 = 11 , VGPR = 13 , RESERVED_ADDRESS_SPACE_14 = 14 , BARRIER = 15 ,
RESERVED_ADDRESS_SPACE_16 = 16 , RESERVED_ADDRESS_SPACE_17 = 17 , RESERVED_ADDRESS_SPACE_18 = 18 , STREAMOUT_REGISTER = 128 ,
PARAM_D_ADDRESS = 6 , PARAM_I_ADDRESS = 7 , 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 , UNKNOWN_ADDRESS_SPACE = ~0u
}

Detailed Description

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.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum : unsigned

Enumerator
MAX_AMDGPU_ADDRESS
FLAT_ADDRESS	Address space for flat memory.
GLOBAL_ADDRESS	Address space for global memory (RAT0, VTX0).
REGION_ADDRESS	Address space for region memory. (GDS)
LOCAL_ADDRESS	Address space for local memory.
CONSTANT_ADDRESS	Address space for constant memory (VTX2).
PRIVATE_ADDRESS	Address space for private memory.
CONSTANT_ADDRESS_32BIT	Address space for 32-bit constant memory.
BUFFER_FAT_POINTER	Address space for 160-bit buffer fat pointers. Not used in backend.
BUFFER_RESOURCE	Address space for 128-bit buffer resources.
BUFFER_STRIDED_POINTER	Address space for 192-bit fat buffer pointers with an additional index.
RESERVED_ADDRESS_SPACE_10	Reserved for downstream use.
RESERVED_ADDRESS_SPACE_11	Reserved for downstream use.
VGPR	Address space for VGPRs. The 32-bit address is a byte offset into the wave's view of its vector registers. Note this shares its numeric value with CONSTANT_BUFFER_5, which is only used by the (graphics) R600 path.
RESERVED_ADDRESS_SPACE_14	Reserved for downstream use.
BARRIER	Address space for modeling barrier IDs as addresses.
RESERVED_ADDRESS_SPACE_16	Reserved for downstream use.
RESERVED_ADDRESS_SPACE_17	Reserved for downstream use.
RESERVED_ADDRESS_SPACE_18	Reserved for downstream use.
STREAMOUT_REGISTER	Internal address spaces. Can be freely renumbered. Address space for GS NGG Streamout registers.
PARAM_D_ADDRESS	end Internal address spaces. Address space for direct addressable parameter memory (CONST0).
PARAM_I_ADDRESS	Address space for indirect addressable parameter memory (VTX1).
CONSTANT_BUFFER_0
CONSTANT_BUFFER_1
CONSTANT_BUFFER_2
CONSTANT_BUFFER_3
CONSTANT_BUFFER_4
CONSTANT_BUFFER_5
CONSTANT_BUFFER_6
CONSTANT_BUFFER_7
CONSTANT_BUFFER_8
CONSTANT_BUFFER_9
CONSTANT_BUFFER_10
CONSTANT_BUFFER_11
CONSTANT_BUFFER_12
CONSTANT_BUFFER_13
CONSTANT_BUFFER_14
CONSTANT_BUFFER_15
UNKNOWN_ADDRESS_SPACE

Definition at line 28 of file AMDGPUAddrSpace.h.