JumpThreading.cpp File Reference

#include "llvm/Transforms/Scalar.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/Pass.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/ADT/SmallPtrSet.h"

Include dependency graph for JumpThreading.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "jump-threading"
Functions
	STATISTIC (NumThreads,"Number of jumps threaded")
	STATISTIC (NumFolds,"Number of terminators folded")
FunctionPass *	llvm::createJumpThreadingPass ()
static unsigned	getJumpThreadDuplicationCost (const BasicBlock *BB)
Variables
static cl::opt< unsigned >	Threshold ("jump-threading-threshold", cl::desc("Max block size to duplicate for jump threading"), cl::init(6), cl::Hidden)
static RegisterPass < JumpThreading >	X ("jump-threading","Jump Threading")

---

Define Documentation

#define DEBUG_TYPE   "jump-threading"

Definition at line 14 of file JumpThreading.cpp.

---

Function Documentation

static unsigned getJumpThreadDuplicationCost

(

const BasicBlock *

BB

)

[static]

getJumpThreadDuplicationCost - Return the cost of duplicating this block to thread across it.

Ignore PHI nodes, these will be flattened when duplication happens.

Definition at line 146 of file JumpThreading.cpp.

References llvm::BasicBlock::getFirstNonPHI().

STATISTIC	(	NumFolds	,
		"Number of terminators folded"
	)

STATISTIC	(	NumThreads	,
		"Number of jumps threaded"
	)

---

Variable Documentation

char ID [static]

Definition at line 59 of file JumpThreading.cpp.

TargetData* TD

Definition at line 57 of file JumpThreading.cpp.

cl::opt<unsigned> Threshold("jump-threading-threshold", cl::desc("Max block size to duplicate for jump threading"), cl::init(6), cl::Hidden) [static]

Referenced by emitThumbRegPlusImmediate(), llvm::BitstreamWriter::EmitVBR(), llvm::BitstreamWriter::EmitVBR64(), and llvm::MipsTargetAsmInfo::SectionKindForGlobal().

RegisterPass<JumpThreading> X("jump-threading","Jump Threading") [static]