#include "llvm/Transforms/Scalar/DCE.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Instruction.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/DebugCounter.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/AssumeBundleBuilder.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Local.h"

Macros
#define	DEBUG_TYPE "dce"

Functions
	STATISTIC (DCEEliminated, "Number of insts removed")

	DEBUG_COUNTER (DCECounter, "dce-transform", "Controls which instructions are eliminated")

	INITIALIZE_PASS (RedundantDbgInstElimination, "redundant-dbg-inst-elim", "Redundant Dbg Instruction Elimination", false, false) Pass *llvm

static bool	DCEInstruction (Instruction I, SmallSetVector< Instruction , 16 > &WorkList, const TargetLibraryInfo *TLI)

static bool	eliminateDeadCode (Function &F, TargetLibraryInfo *TLI)

Macro Definition Documentation

◆ DEBUG_TYPE

#define DEBUG_TYPE "dce"

Definition at line 33 of file DCE.cpp.

Function Documentation

◆ DCEInstruction()

static bool DCEInstruction	(	Instruction *	I,
		SmallSetVector< Instruction *, 16 > &	WorkList,
		const TargetLibraryInfo *	TLI
	)

static

Definition at line 88 of file DCE.cpp.

References I, llvm::SetVector< T, Vector, Set >::insert(), llvm::isInstructionTriviallyDead(), llvm::salvageDebugInfo(), llvm::salvageKnowledge(), llvm::DebugCounter::shouldExecute(), and llvm::Value::use_empty().

Referenced by eliminateDeadCode().

◆ DEBUG_COUNTER()

DEBUG_COUNTER	(	DCECounter	,
		"dce-transform"	,
		"Controls which instructions are eliminated"
	)

◆ eliminateDeadCode()

static bool eliminateDeadCode	(	Function &	F,
		TargetLibraryInfo *	TLI
	)

static

Definition at line 122 of file DCE.cpp.

References llvm::SetVector< T, Vector, Set >::count(), DCEInstruction(), llvm::SetVector< T, Vector, Set >::empty(), F, I, instructions, llvm::make_early_inc_range(), and llvm::SetVector< T, Vector, Set >::pop_back_val().

◆ INITIALIZE_PASS()

INITIALIZE_PASS	(	RedundantDbgInstElimination	,
		"redundant-dbg-inst-elim"	,
		"Redundant Dbg Instruction Elimination"	,
		false	,
		false
	)

Definition at line 65 of file DCE.cpp.

◆ STATISTIC()

STATISTIC	(	DCEEliminated	,
		"Number of insts removed"
	)

Macros

Functions