AMDGPUUnifyDivergentExitNodes.cpp File Reference

#include "AMDGPU.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Analysis/LegacyDivergenceAnalysis.h"
#include "llvm/Analysis/PostDominators.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Type.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils.h"

Include dependency graph for AMDGPUUnifyDivergentExitNodes.cpp:

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "amdgpu-unify-divergent-exit-nodes"

Functions
	INITIALIZE_PASS_BEGIN (AMDGPUUnifyDivergentExitNodes, DEBUG_TYPE, "Unify divergent function exit nodes", false, false) INITIALIZE_PASS_END(AMDGPUUnifyDivergentExitNodes
static bool	isUniformlyReached (const LegacyDivergenceAnalysis &DA, BasicBlock &BB)
static BasicBlock *	unifyReturnBlockSet (Function &F, ArrayRef< BasicBlock *> ReturningBlocks, const TargetTransformInfo &TTI, StringRef Name)

Variables
	DEBUG_TYPE
Unify divergent function exit	nodes
Unify divergent function exit	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "amdgpu-unify-divergent-exit-nodes"

Definition at line 47 of file AMDGPUUnifyDivergentExitNodes.cpp.

Function Documentation

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	AMDGPUUnifyDivergentExitNodes	,
		DEBUG_TYPE	,
		"Unify divergent function exit nodes"	,
		false	,
		false
	)

isUniformlyReached()

static bool isUniformlyReached ( const LegacyDivergenceAnalysis &  DA, BasicBlock &  BB  )

static

Returns

true if BB is reachable through only uniform branches. XXX - Is there a more efficient way to find this?

Definition at line 98 of file AMDGPUUnifyDivergentExitNodes.cpp.

References llvm::SmallVectorBase::empty(), llvm::BasicBlock::getTerminator(), llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::LegacyDivergenceAnalysis::isUniform(), llvm::SmallVectorImpl< T >::pop_back_val(), llvm::predecessors(), and llvm::SmallVectorTemplateBase< T >::push_back().

Referenced by unifyReturnBlockSet().

unifyReturnBlockSet()

static BasicBlock* unifyReturnBlockSet ( Function &  F, ArrayRef< BasicBlock *>  ReturningBlocks, const TargetTransformInfo &  TTI, StringRef  Name  )

static

Definition at line 120 of file AMDGPUUnifyDivergentExitNodes.cpp.

References llvm::Intrinsic::amdgcn_unreachable, llvm::BasicBlock::Create(), llvm::CallInst::Create(), llvm::PHINode::Create(), llvm::ReturnInst::Create(), llvm::BranchInst::Create(), llvm::SmallVectorBase::empty(), llvm::Instruction::eraseFromParent(), llvm::BasicBlock::eraseFromParent(), F(), llvm::SmallVectorTemplateCommon< T >::front(), llvm::UndefValue::get(), llvm::Function::getContext(), llvm::Intrinsic::getDeclaration(), llvm::BasicBlock::getInstList(), llvm::GlobalValue::getParent(), llvm::Function::getReturnType(), llvm::BasicBlock::getTerminator(), llvm::ConstantInt::getTrue(), isUniformlyReached(), llvm::Type::isVoidTy(), Name, llvm::SmallVectorTemplateBase< T >::push_back(), llvm::iplist_impl< IntrusiveListT, TraitsT >::push_back(), llvm::BasicBlock::removeFromParent(), runOnFunction(), llvm::simplifyCFG(), llvm::SmallVectorBase::size(), and llvm::ArrayRef< T >::size().

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 74 of file AMDGPUUnifyDivergentExitNodes.cpp.

false

Unify divergent function exit false

Definition at line 74 of file AMDGPUUnifyDivergentExitNodes.cpp.

nodes

Unify divergent function exit nodes

Definition at line 74 of file AMDGPUUnifyDivergentExitNodes.cpp.

Referenced by llvm::SpillPlacement::addConstraints(), llvm::SpillPlacement::addLinks(), llvm::SpillPlacement::addPrefSpill(), llvm::SpillPlacement::finish(), llvm::SpillPlacement::Node::getDissentingNeighbors(), llvm::SpillPlacement::iterate(), and llvm::SpillPlacement::scanActiveBundles().