AMDGPUGlobalISelDivergenceLowering.cpp File Reference

GlobalISel pass that selects divergent i1 phis as lane mask phis. More...

#include "AMDGPU.h"
#include "AMDGPUGlobalISelUtils.h"
#include "SILowerI1Copies.h"
#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineUniformityAnalysis.h"
#include "llvm/InitializePasses.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "amdgpu-global-isel-divergence-lowering"

Functions
	INITIALIZE_PASS_BEGIN (AMDGPUGlobalISelDivergenceLowering, DEBUG_TYPE, "AMDGPU GlobalISel divergence lowering", false, false) INITIALIZE_PASS_END(AMDGPUGlobalISelDivergenceLowering

Variables
	DEBUG_TYPE
AMDGPU GlobalISel divergence	lowering
AMDGPU GlobalISel divergence	false

Detailed Description

GlobalISel pass that selects divergent i1 phis as lane mask phis.

Lane mask merging uses same algorithm as SDAG in SILowerI1Copies. Handles all cases of temporal divergence. For divergent non-phi i1 and uniform i1 uses outside of the cycle this pass currently depends on LCSSA to insert phis with one incoming.

Definition in file AMDGPUGlobalISelDivergenceLowering.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "amdgpu-global-isel-divergence-lowering"

Definition at line 26 of file AMDGPUGlobalISelDivergenceLowering.cpp.

Function Documentation

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	AMDGPUGlobalISelDivergenceLowering	,
		DEBUG_TYPE	,
		"AMDGPU GlobalISel divergence lowering"	,
		false	,
		false	)

References DEBUG_TYPE, and INITIALIZE_PASS_DEPENDENCY.

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 293 of file AMDGPUGlobalISelDivergenceLowering.cpp.

false

AMDGPU GlobalISel divergence false

Definition at line 294 of file AMDGPUGlobalISelDivergenceLowering.cpp.

lowering

AMDGPU GlobalISel divergence lowering

Definition at line 294 of file AMDGPUGlobalISelDivergenceLowering.cpp.