InferAddressSpaces.cpp File Reference

#include "llvm/Transforms/Scalar/InferAddressSpaces.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Analysis/AssumptionCache.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Operator.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Use.h"
#include "llvm/IR/User.h"
#include "llvm/IR/Value.h"
#include "llvm/IR/ValueHandle.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Transforms/Utils/ValueMapper.h"
#include <cassert>
#include <iterator>
#include <limits>
#include <utility>
#include <vector>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "infer-address-spaces"

Functions
	INITIALIZE_PASS_BEGIN (InferAddressSpaces, DEBUG_TYPE, "Infer address spaces", false, false) INITIALIZE_PASS_END(InferAddressSpaces
Infer address static false Type *	getPtrOrVecOfPtrsWithNewAS (Type *Ty, unsigned NewAddrSpace)
static bool	isNoopPtrIntCastPair (const Operator *I2P, const DataLayout &DL, const TargetTransformInfo *TTI)
static bool	isAddressExpression (const Value &V, const DataLayout &DL, const TargetTransformInfo *TTI)
static SmallVector< Value *, 2 >	getPointerOperands (const Value &V, const DataLayout &DL, const TargetTransformInfo *TTI)
static Value *	operandWithNewAddressSpaceOrCreatePoison (const Use &OperandUse, unsigned NewAddrSpace, const ValueToValueMapTy &ValueWithNewAddrSpace, const PredicatedAddrSpaceMapTy &PredicatedAS, SmallVectorImpl< const Use * > *PoisonUsesToFix)
static Value *	cloneConstantExprWithNewAddressSpace (ConstantExpr *CE, unsigned NewAddrSpace, const ValueToValueMapTy &ValueWithNewAddrSpace, const DataLayout *DL, const TargetTransformInfo *TTI)
static bool	isSimplePointerUseValidToReplace (const TargetTransformInfo &TTI, Use &U, unsigned AddrSpace)
	returns true if U is the pointer operand of a memory instruction with a single pointer operand that can have its address space changed by simply mutating the use to a new value.
static bool	handleMemIntrinsicPtrUse (MemIntrinsic *MI, Value *OldV, Value *NewV)
	Update memory intrinsic uses that require more complex processing than simple memory instructions.
static Value::use_iterator	skipToNextUser (Value::use_iterator I, Value::use_iterator End)

Variables
static cl::opt< bool >	AssumeDefaultIsFlatAddressSpace ("assume-default-is-flat-addrspace", cl::init(false), cl::ReallyHidden, cl::desc("The default address space is assumed as the flat address space. " "This is mainly for test purpose."))
static const unsigned	UninitializedAddressSpace
	DEBUG_TYPE
Infer address	spaces
Infer address	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "infer-address-spaces"

Definition at line 136 of file InferAddressSpaces.cpp.

Function Documentation

cloneConstantExprWithNewAddressSpace()

static Value * cloneConstantExprWithNewAddressSpace ( ConstantExpr *  CE, unsigned  NewAddrSpace, const ValueToValueMapTy &  ValueWithNewAddrSpace, const DataLayout *  DL, const TargetTransformInfo *  TTI  )

static

Definition at line 704 of file InferAddressSpaces.cpp.

References assert(), cloneConstantExprWithNewAddressSpace(), DL, llvm::ConstantExpr::getAddrSpaceCast(), llvm::ConstantExpr::getBitCast(), getPtrOrVecOfPtrsWithNewAS(), isNoopPtrIntCastPair(), llvm::ValueMap< KeyT, ValueT, Config >::lookup(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by cloneConstantExprWithNewAddressSpace().

getPointerOperands()

static SmallVector< Value *, 2 > getPointerOperands ( const Value &  V, const DataLayout &  DL, const TargetTransformInfo *  TTI  )

static

Definition at line 338 of file InferAddressSpaces.cpp.

References assert(), DL, llvm::CallBase::getArgOperand(), llvm::IntrinsicInst::getIntrinsicID(), isNoopPtrIntCastPair(), and llvm_unreachable.

getPtrOrVecOfPtrsWithNewAS()

Infer address static false Type * getPtrOrVecOfPtrsWithNewAS ( Type *  Ty, unsigned  NewAddrSpace  )

static

Definition at line 263 of file InferAddressSpaces.cpp.

References assert().

Referenced by cloneConstantExprWithNewAddressSpace(), and operandWithNewAddressSpaceOrCreatePoison().

handleMemIntrinsicPtrUse()

static bool handleMemIntrinsicPtrUse ( MemIntrinsic *  MI, Value *  OldV, Value *  NewV  )

static

Update memory intrinsic uses that require more complex processing than simple memory instructions.

These require re-mangling and may have multiple pointer operands.

Definition at line 1039 of file InferAddressSpaces.cpp.

References assert(), B, llvm_unreachable, and MI.

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	InferAddressSpaces	,
		DEBUG_TYPE	,
		"Infer address spaces"	,
		false	,
		false
	)

isAddressExpression()

static bool isAddressExpression ( const Value &  V, const DataLayout &  DL, const TargetTransformInfo *  TTI  )

static

Definition at line 306 of file InferAddressSpaces.cpp.

References assert(), DL, llvm::TargetTransformInfo::getAssumedAddrSpace(), llvm::IntrinsicInst::getIntrinsicID(), isNoopPtrIntCastPair(), and UninitializedAddressSpace.

isNoopPtrIntCastPair()

static bool isNoopPtrIntCastPair ( const Operator *  I2P, const DataLayout &  DL, const TargetTransformInfo *  TTI  )

static

Definition at line 272 of file InferAddressSpaces.cpp.

References assert(), DL, llvm::Operator::getOpcode(), llvm::User::getOperand(), llvm::Type::getPointerAddressSpace(), llvm::Value::getType(), llvm::TargetTransformInfo::isNoopAddrSpaceCast(), and llvm::CastInst::isNoopCast().

Referenced by cloneConstantExprWithNewAddressSpace(), getPointerOperands(), and isAddressExpression().

isSimplePointerUseValidToReplace()

static bool isSimplePointerUseValidToReplace ( const TargetTransformInfo &  TTI, Use &  U, unsigned  AddrSpace  )

static

returns true if U is the pointer operand of a memory instruction with a single pointer operand that can have its address space changed by simply mutating the use to a new value.

If the memory instruction is volatile, return true only if the target allows the memory instruction to be volatile in the new address space.

Definition at line 1009 of file InferAddressSpaces.cpp.

References llvm::LoadInst::getPointerOperandIndex(), llvm::StoreInst::getPointerOperandIndex(), llvm::AtomicCmpXchgInst::getPointerOperandIndex(), llvm::AtomicRMWInst::getPointerOperandIndex(), llvm::TargetTransformInfo::hasVolatileVariant(), and I.

operandWithNewAddressSpaceOrCreatePoison()

static Value * operandWithNewAddressSpaceOrCreatePoison ( const Use &  OperandUse, unsigned  NewAddrSpace, const ValueToValueMapTy &  ValueWithNewAddrSpace, const PredicatedAddrSpaceMapTy &  PredicatedAS, SmallVectorImpl< const Use * > *  PoisonUsesToFix  )

static

Definition at line 560 of file InferAddressSpaces.cpp.

References llvm::CallingConv::C, llvm::Use::get(), llvm::PoisonValue::get(), llvm::ConstantExpr::getAddrSpaceCast(), llvm::Instruction::getDebugLoc(), getPtrOrVecOfPtrsWithNewAS(), llvm::Value::getType(), llvm::Use::getUser(), I, llvm::ValueMap< KeyT, ValueT, Config >::lookup(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

skipToNextUser()

static Value::use_iterator skipToNextUser ( Value::use_iterator  I, Value::use_iterator  End  )

static

Definition at line 1119 of file InferAddressSpaces.cpp.

References End, and I.

Variable Documentation

AssumeDefaultIsFlatAddressSpace

cl::opt< bool > AssumeDefaultIsFlatAddressSpace("assume-default-is-flat-addrspace", cl::init(false), cl::ReallyHidden, cl::desc("The default address space is assumed as the flat address space. " "This is mainly for test purpose.")) ( "assume-default-is-flat-addrspace"  , cl::init(false)  , cl::ReallyHidden  , cl::desc("The default address space is assumed as the flat address space. " "This is mainly for test purpose.")    )

static

DEBUG_TYPE

DEBUG_TYPE

Definition at line 260 of file InferAddressSpaces.cpp.

false

Infer address false

Definition at line 261 of file InferAddressSpaces.cpp.

spaces

Infer address spaces

Definition at line 260 of file InferAddressSpaces.cpp.

UninitializedAddressSpace

const unsigned UninitializedAddressSpace

static

Initial value:

=
    std::numeric_limits<unsigned>::max()

Definition at line 145 of file InferAddressSpaces.cpp.

Referenced by isAddressExpression().