This pass propagates attributes from kernels to the non-entry functions. More...

#include "AMDGPU.h"
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
#include "Utils/AMDGPUBaseInfo.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/Utils/Cloning.h"

Include dependency graph for AMDGPUPropagateAttributes.cpp:

Go to the source code of this file.

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Macros
#define	DEBUG_TYPE "amdgpu-propagate-attributes"

Functions
	INITIALIZE_PASS (AMDGPUPropagateAttributesEarly, "amdgpu-propagate-attributes-early", "Early propagate attributes from kernels to functions", false, false) INITIALIZE_PASS(AMDGPUPropagateAttributesLate

Variables
const SubtargetFeatureKV	llvm::AMDGPUFeatureKV [AMDGPU::NumSubtargetFeatures-1]

amdgpu propagate attributes	late

amdgpu propagate attributes Late propagate attributes from kernels to	functions

amdgpu propagate attributes Late propagate attributes from kernels to	false

Detailed Description

This pass propagates attributes from kernels to the non-entry functions.

Most of the library functions were not compiled for specific ABI, yet will be correctly compiled if proper attributes are propagated from the caller.

The pass analyzes call graph and propagates ABI target features through the call graph.

It can run in two modes: as a function or module pass. A function pass simply propagates attributes. A module pass clones functions if there are callers with different ABI. If a function is cloned all call sites will be updated to use a correct clone.

A function pass is limited in functionality but can run early in the pipeline. A module pass is more powerful but has to run late, so misses library folding opportunities.

Definition in file AMDGPUPropagateAttributes.cpp.

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE "amdgpu-propagate-attributes"

Definition at line 39 of file AMDGPUPropagateAttributes.cpp.

Function Documentation

◆ INITIALIZE_PASS()

INITIALIZE_PASS	(	AMDGPUPropagateAttributesEarly	,
		"amdgpu-propagate-attributes-early"	,
		"Early propagate attributes from kernels to functions"	,
		false	,
		false
	)