LowerTypeTests.cpp File Reference

#include "llvm/Transforms/IPO/LowerTypeTests.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/EquivalenceClasses.h"
#include "llvm/ADT/PointerUnion.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/TinyPtrVector.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/Analysis/TypeMetadataUtils.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalAlias.h"
#include "llvm/IR/GlobalObject.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InlineAsm.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/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/ModuleSummaryIndex.h"
#include "llvm/IR/ModuleSummaryIndexYAML.h"
#include "llvm/IR/Operator.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/ReplaceConstant.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Use.h"
#include "llvm/IR/User.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/TrailingObjects.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Triple.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/ModuleUtils.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <memory>
#include <set>
#include <string>
#include <system_error>
#include <utility>
#include <vector>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "lowertypetests"

Functions
	STATISTIC (ByteArraySizeBits, "Byte array size in bits")
	STATISTIC (ByteArraySizeBytes, "Byte array size in bytes")
	STATISTIC (NumByteArraysCreated, "Number of byte arrays created")
	STATISTIC (NumTypeTestCallsLowered, "Number of type test calls lowered")
	STATISTIC (NumTypeIdDisjointSets, "Number of disjoint sets of type identifiers")
static Value *	createMaskedBitTest (IRBuilder<> &B, Value *Bits, Value *BitOffset)
	Build a test that bit BitOffset mod sizeof(Bits)*8 is set in Bits.
static bool	isKnownTypeIdMember (Metadata *TypeId, const DataLayout &DL, Value *V, uint64_t COffset)
static bool	isThumbFunction (Function *F, Triple::ArchType ModuleArch)
static bool	isDirectCall (Use &U)
static void	dropTypeTests (Module &M, Function &TypeTestFunc)

Variables
static cl::opt< bool >	AvoidReuse ("lowertypetests-avoid-reuse", cl::desc("Try to avoid reuse of byte array addresses using aliases"), cl::Hidden, cl::init(true))
static cl::opt< PassSummaryAction >	ClSummaryAction ("lowertypetests-summary-action", cl::desc("What to do with the summary when running this pass"), cl::values(clEnumValN(PassSummaryAction::None, "none", "Do nothing"), clEnumValN(PassSummaryAction::Import, "import", "Import typeid resolutions from summary and globals"), clEnumValN(PassSummaryAction::Export, "export", "Export typeid resolutions to summary and globals")), cl::Hidden)
static cl::opt< std::string >	ClReadSummary ("lowertypetests-read-summary", cl::desc("Read summary from given YAML file before running pass"), cl::Hidden)
static cl::opt< std::string >	ClWriteSummary ("lowertypetests-write-summary", cl::desc("Write summary to given YAML file after running pass"), cl::Hidden)
static cl::opt< bool >	ClDropTypeTests ("lowertypetests-drop-type-tests", cl::desc("Simply drop type test assume sequences"), cl::Hidden, cl::init(false))
static const unsigned	kX86JumpTableEntrySize = 8
static const unsigned	kX86IBTJumpTableEntrySize = 16
static const unsigned	kARMJumpTableEntrySize = 4
static const unsigned	kARMBTIJumpTableEntrySize = 8
static const unsigned	kARMv6MJumpTableEntrySize = 16
static const unsigned	kRISCVJumpTableEntrySize = 8

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "lowertypetests"

Definition at line 88 of file LowerTypeTests.cpp.

Function Documentation

createMaskedBitTest()

static Value * createMaskedBitTest ( IRBuilder<> &  B, Value *  Bits, Value *  BitOffset  )

static

Build a test that bit BitOffset mod sizeof(Bits)*8 is set in Bits.

This pattern matches to the bt instruction on x86.

Definition at line 571 of file LowerTypeTests.cpp.

References B, llvm::BitWidth, and llvm::ConstantInt::get().

dropTypeTests()

static void dropTypeTests ( Module &  M, Function &  TypeTestFunc  )

static

Definition at line 1886 of file LowerTypeTests.cpp.

References llvm::all_of(), assert(), llvm::Instruction::eraseFromParent(), llvm::ConstantInt::getTrue(), llvm::make_early_inc_range(), llvm::Value::replaceAllUsesWith(), llvm::Value::use_empty(), llvm::Value::users(), and llvm::Value::uses().

isDirectCall()

static bool isDirectCall ( Use &  U )

static

Definition at line 1840 of file LowerTypeTests.cpp.

isKnownTypeIdMember()

static bool isKnownTypeIdMember ( Metadata *  TypeId, const DataLayout &  DL, Value *  V, uint64_t  COffset  )

static

Definition at line 682 of file LowerTypeTests.cpp.

References DL, GEP, llvm::APInt::getZExtValue(), isKnownTypeIdMember(), and llvm::Offset.

Referenced by isKnownTypeIdMember().

isThumbFunction()

static bool isThumbFunction ( Function *  F, Triple::ArchType  ModuleArch  )

static

Definition at line 1394 of file LowerTypeTests.cpp.

References F, llvm::Attribute::getValueAsString(), llvm::Attribute::isValid(), llvm::StringRef::split(), and llvm::Triple::thumb.

Referenced by llvm::ARMBasicBlockUtils::ARMBasicBlockUtils().

STATISTIC() [1/5]

STATISTIC	(	ByteArraySizeBits	,
		"Byte array size in bits"
	)

STATISTIC() [2/5]

STATISTIC	(	ByteArraySizeBytes	,
		"Byte array size in bytes"
	)

STATISTIC() [3/5]

STATISTIC	(	NumByteArraysCreated	,
		"Number of byte arrays created"
	)

STATISTIC() [4/5]

STATISTIC	(	NumTypeIdDisjointSets	,
		"Number of disjoint sets of type identifiers"
	)

STATISTIC() [5/5]

STATISTIC	(	NumTypeTestCallsLowered	,
		"Number of type test calls lowered"
	)

Variable Documentation

AvoidReuse

cl::opt< bool > AvoidReuse("lowertypetests-avoid-reuse", cl::desc("Try to avoid reuse of byte array addresses using aliases"), cl::Hidden, cl::init(true)) ( "lowertypetests-avoid-reuse"  , cl::desc("Try to avoid reuse of byte array addresses using aliases")  , cl::Hidden  , cl::init(true)    )

static

ClDropTypeTests

cl::opt< bool > ClDropTypeTests("lowertypetests-drop-type-tests", cl::desc("Simply drop type test assume sequences"), cl::Hidden, cl::init(false)) ( "lowertypetests-drop-type-tests"  , cl::desc("Simply drop type test assume sequences")  , cl::Hidden  , cl::init(false)    )

static

ClReadSummary

cl::opt< std::string > ClReadSummary("lowertypetests-read-summary", cl::desc("Read summary from given YAML file before running pass"), cl::Hidden) ( "lowertypetests-read-summary"  , cl::desc("Read summary from given YAML file before running pass")  , cl::Hidden    )

static

ClSummaryAction

cl::opt< PassSummaryAction > ClSummaryAction("lowertypetests-summary-action", cl::desc("What to do with the summary when running this pass"), cl::values(clEnumValN(PassSummaryAction::None, "none", "Do nothing"), clEnumValN(PassSummaryAction::Import, "import", "Import typeid resolutions from summary and globals"), clEnumValN(PassSummaryAction::Export, "export", "Export typeid resolutions to summary and globals")), cl::Hidden) ( "lowertypetests-summary-action"  , cl::desc("What to do with the summary when running this pass")  , cl::values(clEnumValN(PassSummaryAction::None, "none", "Do nothing"), clEnumValN(PassSummaryAction::Import, "import", "Import typeid resolutions from summary and globals"), clEnumValN(PassSummaryAction::Export, "export", "Export typeid resolutions to summary and globals"))  , cl::Hidden    )

static

Referenced by checkCombinedSummaryForTesting().

ClWriteSummary

cl::opt< std::string > ClWriteSummary("lowertypetests-write-summary", cl::desc("Write summary to given YAML file after running pass"), cl::Hidden) ( "lowertypetests-write-summary"  , cl::desc("Write summary to given YAML file after running pass")  , cl::Hidden    )

static

kARMBTIJumpTableEntrySize

const unsigned kARMBTIJumpTableEntrySize = 8

static

Definition at line 1196 of file LowerTypeTests.cpp.

kARMJumpTableEntrySize

const unsigned kARMJumpTableEntrySize = 4

static

Definition at line 1195 of file LowerTypeTests.cpp.

kARMv6MJumpTableEntrySize

const unsigned kARMv6MJumpTableEntrySize = 16

static

Definition at line 1197 of file LowerTypeTests.cpp.

kRISCVJumpTableEntrySize

const unsigned kRISCVJumpTableEntrySize = 8

static

Definition at line 1198 of file LowerTypeTests.cpp.

kX86IBTJumpTableEntrySize

const unsigned kX86IBTJumpTableEntrySize = 16

static

Definition at line 1194 of file LowerTypeTests.cpp.

kX86JumpTableEntrySize

const unsigned kX86JumpTableEntrySize = 8

static

Definition at line 1193 of file LowerTypeTests.cpp.