llvm::omp::GV Struct Reference

Defines various target-specific GPU grid values that must be consistent between host RTL (plugin), device RTL, and clang. More...

#include "llvm/Frontend/OpenMP/OMPGridValues.h"

Public Member Functions
constexpr unsigned	warpSlotSize () const
constexpr unsigned	maxWarpNumber () const

Public Attributes
unsigned	GV_Slot_Size
	The size reserved for data in a shared memory slot.
unsigned	GV_Warp_Size
	The default value of maximum number of threads in a worker warp.
unsigned	GV_Max_Teams
	the maximum number of teams.
unsigned	GV_Default_Num_Teams
unsigned	GV_SimpleBufferSize
unsigned	GV_Max_WG_Size
unsigned	GV_Default_WG_Size

Detailed Description

Defines various target-specific GPU grid values that must be consistent between host RTL (plugin), device RTL, and clang.

We can change grid values for a "fat" binary so that different passes get the correct values when generating code for a multi-target binary. Both amdgcn and nvptx values are stored in this file. In the future, should there be differences between GPUs of the same architecture, then simply make a different array and use the new array name.

Example usage in clang: const unsigned slot_size = ctx.GetTargetInfo().getGridValue().GV_Warp_Size;

Example usage in libomptarget/deviceRTLs: #include "llvm/Frontend/OpenMP/OMPGridValues.h" #ifdef AMDGPU #define GRIDVAL AMDGPUGridValues else #define GRIDVAL NVPTXGridValues #endif ... Then use this reference for GV_Warp_Size in the deviceRTL source. llvm::omp::GRIDVAL().GV_Warp_Size

Example usage in libomptarget hsa plugin: #include "llvm/Frontend/OpenMP/OMPGridValues.h" #define GRIDVAL AMDGPUGridValues ... Then use this reference to access GV_Warp_Size in the hsa plugin. llvm::omp::GRIDVAL().GV_Warp_Size

Example usage in libomptarget cuda plugin: #include "llvm/Frontend/OpenMP/OMPGridValues.h" #define GRIDVAL NVPTXGridValues ... Then use this reference to access GV_Warp_Size in the cuda plugin. llvm::omp::GRIDVAL().GV_Warp_Size

Definition at line 57 of file OMPGridValues.h.

Member Function Documentation

maxWarpNumber()

constexpr unsigned llvm::omp::GV::maxWarpNumber ( ) const

inlineconstexpr

Definition at line 81 of file OMPGridValues.h.

References GV_Max_WG_Size, and GV_Warp_Size.

warpSlotSize()

constexpr unsigned llvm::omp::GV::warpSlotSize ( ) const

inlineconstexpr

Definition at line 63 of file OMPGridValues.h.

References GV_Slot_Size, and GV_Warp_Size.

Member Data Documentation

GV_Default_Num_Teams

unsigned llvm::omp::GV::GV_Default_Num_Teams

Definition at line 70 of file OMPGridValues.h.

GV_Default_WG_Size

unsigned llvm::omp::GV::GV_Default_WG_Size

Definition at line 79 of file OMPGridValues.h.

GV_Max_Teams

unsigned llvm::omp::GV::GV_Max_Teams

the maximum number of teams.

Definition at line 68 of file OMPGridValues.h.

GV_Max_WG_Size

unsigned llvm::omp::GV::GV_Max_WG_Size

Definition at line 77 of file OMPGridValues.h.

Referenced by maxWarpNumber().

GV_SimpleBufferSize

unsigned llvm::omp::GV::GV_SimpleBufferSize

Definition at line 75 of file OMPGridValues.h.

GV_Slot_Size

unsigned llvm::omp::GV::GV_Slot_Size

The size reserved for data in a shared memory slot.

Definition at line 59 of file OMPGridValues.h.

Referenced by warpSlotSize().

GV_Warp_Size

unsigned llvm::omp::GV::GV_Warp_Size

The default value of maximum number of threads in a worker warp.

Definition at line 61 of file OMPGridValues.h.

Referenced by maxWarpNumber(), and warpSlotSize().

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The documentation for this struct was generated from the following file:

• include/llvm/Frontend/OpenMP/OMPGridValues.h