51#define DEBUG_TYPE "functioncomparator"
62 if (L.value() < R.value())
64 if (L.value() > R.value())
78 if (
int Res =
cmpNumbers(L.getBitWidth(), R.getBitWidth()))
90 const fltSemantics &SL = L.getSemantics(), &SR = R.getSemantics();
103 return cmpAPInts(L.bitcastToAPInt(), R.bitcastToAPInt());
113 return std::clamp(L.compare(R), -1, 1);
118 if (
int Res =
cmpNumbers(L.getNumAttrSets(), R.getNumAttrSets()))
121 for (
unsigned i : L.indexes()) {
126 for (; LI != LE && RI != RE; ++LI, ++RI) {
134 Type *TyR =
RA.getValueAsType();
147 RA.isConstantRangeAttribute()) {
172int FunctionComparator::cmpMetadata(
const Metadata *L,
180 auto *MDStringL = dyn_cast<MDString>(L);
181 auto *MDStringR = dyn_cast<MDString>(R);
182 if (MDStringL && MDStringR) {
183 if (MDStringL == MDStringR)
185 return MDStringL->getString().compare(MDStringR->getString());
192 auto *CL = dyn_cast<ConstantAsMetadata>(L);
193 auto *CR = dyn_cast<ConstantAsMetadata>(R);
203int FunctionComparator::cmpMDNode(
const MDNode *L,
const MDNode *R)
const {
216 if (
int Res =
cmpNumbers(
L->getNumOperands(),
R->getNumOperands()))
218 for (
size_t I = 0;
I <
L->getNumOperands(); ++
I)
219 if (
int Res = cmpMetadata(
L->getOperand(
I),
R->getOperand(
I)))
224int FunctionComparator::cmpInstMetadata(
Instruction const *L,
230 L->getAllMetadataOtherThanDebugLoc(MDL);
231 R->getAllMetadataOtherThanDebugLoc(MDR);
236 for (
size_t I = 0,
N = MDL.
size();
I <
N; ++
I) {
237 auto const [KeyL,
ML] = MDL[
I];
238 auto const [KeyR, MR] = MDR[
I];
241 if (
int Res = cmpMDNode(
ML, MR))
247int FunctionComparator::cmpOperandBundlesSchema(
const CallBase &LCS,
259 if (
int Res = OBL.getTagName().compare(OBR.getTagName()))
262 if (
int Res =
cmpNumbers(OBL.Inputs.size(), OBR.Inputs.size()))
276 Type *TyL = L->getType();
277 Type *TyR = R->getType();
300 unsigned TyLWidth = 0;
301 unsigned TyRWidth = 0;
303 if (
auto *VecTyL = dyn_cast<VectorType>(TyL))
304 TyLWidth = VecTyL->getPrimitiveSizeInBits().getFixedValue();
305 if (
auto *VecTyR = dyn_cast<VectorType>(TyR))
306 TyRWidth = VecTyR->getPrimitiveSizeInBits().getFixedValue();
308 if (TyLWidth != TyRWidth)
318 if (
int Res =
cmpNumbers(AddrSpaceL, AddrSpaceR))
334 if (L->isNullValue() && R->isNullValue())
336 if (L->isNullValue() && !R->isNullValue())
338 if (!L->isNullValue() && R->isNullValue())
341 auto GlobalValueL =
const_cast<GlobalValue *
>(dyn_cast<GlobalValue>(L));
342 auto GlobalValueR =
const_cast<GlobalValue *
>(dyn_cast<GlobalValue>(R));
343 if (GlobalValueL && GlobalValueR) {
347 if (
int Res =
cmpNumbers(L->getValueID(), R->getValueID()))
350 if (
const auto *SeqL = dyn_cast<ConstantDataSequential>(L)) {
351 const auto *SeqR = cast<ConstantDataSequential>(R);
357 return cmpMem(SeqL->getRawDataValues(), SeqR->getRawDataValues());
360 switch (L->getValueID()) {
361 case Value::UndefValueVal:
362 case Value::PoisonValueVal:
363 case Value::ConstantTokenNoneVal:
365 case Value::ConstantIntVal: {
366 const APInt &LInt = cast<ConstantInt>(L)->getValue();
367 const APInt &RInt = cast<ConstantInt>(R)->getValue();
370 case Value::ConstantFPVal: {
371 const APFloat &LAPF = cast<ConstantFP>(L)->getValueAPF();
372 const APFloat &RAPF = cast<ConstantFP>(R)->getValueAPF();
375 case Value::ConstantArrayVal: {
378 uint64_t NumElementsL = cast<ArrayType>(TyL)->getNumElements();
379 uint64_t NumElementsR = cast<ArrayType>(TyR)->getNumElements();
380 if (
int Res =
cmpNumbers(NumElementsL, NumElementsR))
382 for (
uint64_t i = 0; i < NumElementsL; ++i) {
384 cast<Constant>(
RA->getOperand(i))))
389 case Value::ConstantStructVal: {
392 unsigned NumElementsL = cast<StructType>(TyL)->getNumElements();
393 unsigned NumElementsR = cast<StructType>(TyR)->getNumElements();
394 if (
int Res =
cmpNumbers(NumElementsL, NumElementsR))
396 for (
unsigned i = 0; i != NumElementsL; ++i) {
397 if (
int Res =
cmpConstants(cast<Constant>(LS->getOperand(i)),
403 case Value::ConstantVectorVal: {
406 unsigned NumElementsL = cast<FixedVectorType>(TyL)->getNumElements();
407 unsigned NumElementsR = cast<FixedVectorType>(TyR)->getNumElements();
408 if (
int Res =
cmpNumbers(NumElementsL, NumElementsR))
410 for (
uint64_t i = 0; i < NumElementsL; ++i) {
417 case Value::ConstantExprVal: {
422 unsigned NumOperandsL = LE->getNumOperands();
424 if (
int Res =
cmpNumbers(NumOperandsL, NumOperandsR))
426 for (
unsigned i = 0; i < NumOperandsL; ++i) {
427 if (
int Res =
cmpConstants(cast<Constant>(LE->getOperand(i)),
431 if (
auto *GEPL = dyn_cast<GEPOperator>(LE)) {
432 auto *GEPR = cast<GEPOperator>(RE);
433 if (
int Res =
cmpTypes(GEPL->getSourceElementType(),
434 GEPR->getSourceElementType()))
436 if (
int Res =
cmpNumbers(GEPL->getNoWrapFlags().getRaw(),
437 GEPR->getNoWrapFlags().getRaw()))
440 std::optional<ConstantRange> InRangeL = GEPL->getInRange();
441 std::optional<ConstantRange> InRangeR = GEPR->getInRange();
445 if (
int Res =
cmpAPInts(InRangeL->getLower(), InRangeR->getLower()))
447 if (
int Res =
cmpAPInts(InRangeL->getUpper(), InRangeR->getUpper()))
449 }
else if (InRangeR) {
453 if (
auto *
OBOL = dyn_cast<OverflowingBinaryOperator>(LE)) {
454 auto *OBOR = cast<OverflowingBinaryOperator>(RE);
464 case Value::BlockAddressVal: {
498 case Value::DSOLocalEquivalentVal: {
503 const auto *LEquiv = cast<DSOLocalEquivalent>(L);
504 const auto *REquiv = cast<DSOLocalEquivalent>(R);
505 return cmpGlobalValues(LEquiv->getGlobalValue(), REquiv->getGlobalValue());
508 LLVM_DEBUG(
dbgs() <<
"Looking at valueID " << L->getValueID() <<
"\n");
529 TyL =
DL.getIntPtrType(TyL);
531 TyR =
DL.getIntPtrType(TyR);
558 assert(PTyL && PTyR &&
"Both types must be pointers here.");
589 for (
unsigned i = 0, e = FTyL->
getNumParams(); i != e; ++i) {
597 auto *STyL = cast<ArrayType>(TyL);
598 auto *STyR = cast<ArrayType>(TyR);
599 if (STyL->getNumElements() != STyR->getNumElements())
600 return cmpNumbers(STyL->getNumElements(), STyR->getNumElements());
601 return cmpTypes(STyL->getElementType(), STyR->getElementType());
605 auto *STyL = cast<VectorType>(TyL);
606 auto *STyR = cast<VectorType>(TyR);
607 if (STyL->getElementCount().isScalable() !=
608 STyR->getElementCount().isScalable())
609 return cmpNumbers(STyL->getElementCount().isScalable(),
610 STyR->getElementCount().isScalable());
611 if (STyL->getElementCount() != STyR->getElementCount())
612 return cmpNumbers(STyL->getElementCount().getKnownMinValue(),
613 STyR->getElementCount().getKnownMinValue());
614 return cmpTypes(STyL->getElementType(), STyR->getElementType());
625 bool &needToCmpOperands)
const {
626 needToCmpOperands =
true;
634 if (
int Res =
cmpNumbers(L->getOpcode(), R->getOpcode()))
638 needToCmpOperands =
false;
643 return cmpGEPs(GEPL, GEPR);
646 if (
int Res =
cmpNumbers(L->getNumOperands(), R->getNumOperands()))
649 if (
int Res =
cmpTypes(L->getType(), R->getType()))
652 if (
int Res =
cmpNumbers(L->getRawSubclassOptionalData(),
653 R->getRawSubclassOptionalData()))
658 for (
unsigned i = 0, e = L->getNumOperands(); i != e; ++i) {
660 cmpTypes(L->getOperand(i)->getType(), R->getOperand(i)->getType()))
665 if (
const AllocaInst *AI = dyn_cast<AllocaInst>(L)) {
666 if (
int Res =
cmpTypes(AI->getAllocatedType(),
667 cast<AllocaInst>(R)->getAllocatedType()))
669 return cmpAligns(AI->getAlign(), cast<AllocaInst>(R)->getAlign());
671 if (
const LoadInst *LI = dyn_cast<LoadInst>(L)) {
672 if (
int Res =
cmpNumbers(LI->isVolatile(), cast<LoadInst>(R)->isVolatile()))
674 if (
int Res =
cmpAligns(LI->getAlign(), cast<LoadInst>(R)->getAlign()))
677 cmpOrderings(LI->getOrdering(), cast<LoadInst>(R)->getOrdering()))
679 if (
int Res =
cmpNumbers(LI->getSyncScopeID(),
680 cast<LoadInst>(R)->getSyncScopeID()))
682 return cmpInstMetadata(L, R);
684 if (
const StoreInst *SI = dyn_cast<StoreInst>(L)) {
686 cmpNumbers(SI->isVolatile(), cast<StoreInst>(R)->isVolatile()))
688 if (
int Res =
cmpAligns(SI->getAlign(), cast<StoreInst>(R)->getAlign()))
691 cmpOrderings(SI->getOrdering(), cast<StoreInst>(R)->getOrdering()))
694 cast<StoreInst>(R)->getSyncScopeID());
696 if (
const CmpInst *CI = dyn_cast<CmpInst>(L))
697 return cmpNumbers(CI->getPredicate(), cast<CmpInst>(R)->getPredicate());
698 if (
auto *CBL = dyn_cast<CallBase>(L)) {
699 auto *CBR = cast<CallBase>(R);
700 if (
int Res =
cmpNumbers(CBL->getCallingConv(), CBR->getCallingConv()))
702 if (
int Res = cmpAttrs(CBL->getAttributes(), CBR->getAttributes()))
704 if (
int Res = cmpOperandBundlesSchema(*CBL, *CBR))
706 if (
const CallInst *CI = dyn_cast<CallInst>(L))
707 if (
int Res =
cmpNumbers(CI->getTailCallKind(),
708 cast<CallInst>(R)->getTailCallKind()))
710 return cmpMDNode(L->getMetadata(LLVMContext::MD_range),
711 R->getMetadata(LLVMContext::MD_range));
718 for (
size_t i = 0, e = LIndices.
size(); i != e; ++i) {
719 if (
int Res =
cmpNumbers(LIndices[i], RIndices[i]))
729 for (
size_t i = 0, e = LIndices.
size(); i != e; ++i) {
730 if (
int Res =
cmpNumbers(LIndices[i], RIndices[i]))
734 if (
const FenceInst *FI = dyn_cast<FenceInst>(L)) {
736 cmpOrderings(FI->getOrdering(), cast<FenceInst>(R)->getOrdering()))
739 cast<FenceInst>(R)->getSyncScopeID());
743 cast<AtomicCmpXchgInst>(R)->isVolatile()))
746 cmpNumbers(CXI->isWeak(), cast<AtomicCmpXchgInst>(R)->isWeak()))
749 cmpOrderings(CXI->getSuccessOrdering(),
750 cast<AtomicCmpXchgInst>(R)->getSuccessOrdering()))
753 cmpOrderings(CXI->getFailureOrdering(),
754 cast<AtomicCmpXchgInst>(R)->getFailureOrdering()))
757 cast<AtomicCmpXchgInst>(R)->getSyncScopeID());
759 if (
const AtomicRMWInst *RMWI = dyn_cast<AtomicRMWInst>(L)) {
760 if (
int Res =
cmpNumbers(RMWI->getOperation(),
761 cast<AtomicRMWInst>(R)->getOperation()))
764 cast<AtomicRMWInst>(R)->isVolatile()))
766 if (
int Res = cmpOrderings(RMWI->getOrdering(),
767 cast<AtomicRMWInst>(R)->getOrdering()))
770 cast<AtomicRMWInst>(R)->getSyncScopeID());
774 ArrayRef<int> RMask = cast<ShuffleVectorInst>(R)->getShuffleMask();
777 for (
size_t i = 0, e = LMask.
size(); i != e; ++i) {
782 if (
const PHINode *PNL = dyn_cast<PHINode>(L)) {
783 const PHINode *PNR = cast<PHINode>(R);
787 for (
unsigned i = 0, e = PNL->getNumIncomingValues(); i != e; ++i) {
798int FunctionComparator::cmpGEPs(
const GEPOperator *GEPL,
809 unsigned OffsetBitWidth =
DL.getIndexSizeInBits(ASL);
810 APInt OffsetL(OffsetBitWidth, 0), OffsetR(OffsetBitWidth, 0);
829int FunctionComparator::cmpInlineAsm(
const InlineAsm *L,
835 if (
int Res =
cmpTypes(
L->getFunctionType(),
R->getFunctionType()))
837 if (
int Res =
cmpMem(
L->getAsmString(),
R->getAsmString()))
839 if (
int Res =
cmpMem(
L->getConstraintString(),
R->getConstraintString()))
841 if (
int Res =
cmpNumbers(
L->hasSideEffects(),
R->hasSideEffects()))
843 if (
int Res =
cmpNumbers(
L->isAlignStack(),
R->isAlignStack()))
845 if (
int Res =
cmpNumbers(
L->getDialect(),
R->getDialect()))
847 assert(
L->getFunctionType() !=
R->getFunctionType());
868 const Constant *ConstL = dyn_cast<Constant>(L);
869 const Constant *ConstR = dyn_cast<Constant>(R);
870 if (ConstL && ConstR) {
883 if (MetadataValueL && MetadataValueR) {
884 if (MetadataValueL == MetadataValueR)
896 const InlineAsm *InlineAsmL = dyn_cast<InlineAsm>(L);
897 const InlineAsm *InlineAsmR = dyn_cast<InlineAsm>(R);
899 if (InlineAsmL && InlineAsmR)
900 return cmpInlineAsm(InlineAsmL, InlineAsmR);
906 auto LeftSN = sn_mapL.insert(std::make_pair(L, sn_mapL.size())),
907 RightSN = sn_mapR.insert(std::make_pair(R, sn_mapR.size()));
909 return cmpNumbers(LeftSN.first->second, RightSN.first->second);
919 bool needToCmpOperands =
true;
920 if (
int Res =
cmpOperations(&*InstL, &*InstR, needToCmpOperands))
922 if (needToCmpOperands) {
923 assert(InstL->getNumOperands() == InstR->getNumOperands());
925 for (
unsigned i = 0, e = InstL->getNumOperands(); i != e; ++i) {
926 Value *OpL = InstL->getOperand(i);
927 Value *OpR = InstR->getOperand(i);
937 }
while (InstL != InstLE && InstR != InstRE);
939 if (InstL != InstLE && InstR == InstRE)
941 if (InstL == InstLE && InstR != InstRE)
978 "Identically typed functions have different numbers of args!");
985 ArgLI != ArgLE; ++ArgLI, ++ArgRI) {
1009 VisitedBBs.
insert(FnLBBs[0]);
1010 while (!FnLBBs.
empty()) {
This file declares a class to represent arbitrary precision floating point values and provide a varie...
This file implements a class to represent arbitrary precision integral constant values and operations...
MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL
This file contains the simple types necessary to represent the attributes associated with functions a...
This file contains the declarations for the subclasses of Constant, which represent the different fla...
Module.h This file contains the declarations for the Module class.
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
SI optimize exec mask operations pre RA
This file defines the SmallPtrSet class.
This file defines the SmallVector class.
static unsigned getBitWidth(Type *Ty, const DataLayout &DL)
Returns the bitwidth of the given scalar or pointer type.
Class for arbitrary precision integers.
an instruction to allocate memory on the stack
This class represents an incoming formal argument to a Function.
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
size_t size() const
size - Get the array size.
An instruction that atomically checks whether a specified value is in a memory location,...
an instruction that atomically reads a memory location, combines it with another value,...
const ConstantRange & getRange() const
Returns the value of the range attribute.
bool isConstantRangeAttribute() const
Return true if the attribute is a ConstantRange attribute.
Attribute::AttrKind getKindAsEnum() const
Return the attribute's kind as an enum (Attribute::AttrKind).
bool isTypeAttribute() const
Return true if the attribute is a type attribute.
Type * getValueAsType() const
Return the attribute's value as a Type.
LLVM Basic Block Representation.
iterator begin()
Instruction iterator methods.
InstListType::const_iterator const_iterator
const Instruction * getTerminator() const LLVM_READONLY
Returns the terminator instruction if the block is well formed or null if the block is not well forme...
The address of a basic block.
Function * getFunction() const
BasicBlock * getBasicBlock() const
Base class for all callable instructions (InvokeInst and CallInst) Holds everything related to callin...
OperandBundleUse getOperandBundleAt(unsigned Index) const
Return the operand bundle at a specific index.
unsigned getNumOperandBundles() const
Return the number of operand bundles associated with this User.
This class represents a function call, abstracting a target machine's calling convention.
This class is the base class for the comparison instructions.
ConstantArray - Constant Array Declarations.
A constant value that is initialized with an expression using other constant values.
unsigned getOpcode() const
Return the opcode at the root of this constant expression.
This class represents a range of values.
const APInt & getLower() const
Return the lower value for this range.
const APInt & getUpper() const
Return the upper value for this range.
Constant Vector Declarations.
This is an important base class in LLVM.
A parsed version of the target data layout string in and methods for querying it.
An instruction for ordering other memory operations.
int cmpBasicBlocks(const BasicBlock *BBL, const BasicBlock *BBR) const
Test whether two basic blocks have equivalent behaviour.
int compareSignature() const
Compares the signature and other general attributes of the two functions.
int cmpMem(StringRef L, StringRef R) const
int compare()
Test whether the two functions have equivalent behaviour.
int cmpAPFloats(const APFloat &L, const APFloat &R) const
int cmpTypes(Type *TyL, Type *TyR) const
cmpType - compares two types, defines total ordering among the types set.
int cmpOperations(const Instruction *L, const Instruction *R, bool &needToCmpOperands) const
Compare two Instructions for equivalence, similar to Instruction::isSameOperationAs.
int cmpNumbers(uint64_t L, uint64_t R) const
int cmpAligns(Align L, Align R) const
void beginCompare()
Start the comparison.
int cmpValues(const Value *L, const Value *R) const
Assign or look up previously assigned numbers for the two values, and return whether the numbers are ...
int cmpGlobalValues(GlobalValue *L, GlobalValue *R) const
Compares two global values by number.
int cmpConstants(const Constant *L, const Constant *R) const
Constants comparison.
int cmpAPInts(const APInt &L, const APInt &R) const
Class to represent function types.
unsigned getNumParams() const
Return the number of fixed parameters this function type requires.
Type * getParamType(unsigned i) const
Parameter type accessors.
Type * getReturnType() const
const BasicBlock & getEntryBlock() const
FunctionType * getFunctionType() const
Returns the FunctionType for me.
const DataLayout & getDataLayout() const
Get the data layout of the module this function belongs to.
bool hasGC() const
hasGC/getGC/setGC/clearGC - The name of the garbage collection algorithm to use during code generatio...
CallingConv::ID getCallingConv() const
getCallingConv()/setCallingConv(CC) - These method get and set the calling convention of this functio...
AttributeList getAttributes() const
Return the attribute list for this Function.
const std::string & getGC() const
bool isVarArg() const
isVarArg - Return true if this function takes a variable number of arguments.
Type * getSourceElementType() const
bool accumulateConstantOffset(const DataLayout &DL, APInt &Offset, function_ref< bool(Value &, APInt &)> ExternalAnalysis=nullptr) const
Accumulate the constant address offset of this GEP if possible.
unsigned getPointerAddressSpace() const
Method to return the address space of the pointer operand.
an instruction for type-safe pointer arithmetic to access elements of arrays and structs
Value * getPointerOperand()
uint64_t getNumber(GlobalValue *Global)
StringRef getSection() const
Get the custom section of this global if it has one.
bool hasSection() const
Check if this global has a custom object file section.
This instruction inserts a struct field of array element value into an aggregate value.
unsigned getNumSuccessors() const LLVM_READONLY
Return the number of successors that this instruction has.
BasicBlock * getSuccessor(unsigned Idx) const LLVM_READONLY
Return the specified successor. This instruction must be a terminator.
unsigned getOpcode() const
Returns a member of one of the enums like Instruction::Add.
An instruction for reading from memory.
BasicBlock * getIncomingBlock(unsigned i) const
Return incoming basic block number i.
Class to represent pointers.
unsigned getAddressSpace() const
Return the address space of the Pointer type.
This instruction constructs a fixed permutation of two input vectors.
std::pair< iterator, bool > insert(PtrType Ptr)
Inserts Ptr if and only if there is no element in the container equal to Ptr.
SmallPtrSet - This class implements a set which is optimized for holding SmallSize or less elements.
void push_back(const T &Elt)
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
An instruction for storing to memory.
StringRef - Represent a constant reference to a string, i.e.
Class to represent struct types.
unsigned getNumElements() const
Random access to the elements.
Type * getElementType(unsigned N) const
The instances of the Type class are immutable: once they are created, they are never changed.
@ VoidTyID
type with no size
@ ScalableVectorTyID
Scalable SIMD vector type.
@ FloatTyID
32-bit floating point type
@ IntegerTyID
Arbitrary bit width integers.
@ FixedVectorTyID
Fixed width SIMD vector type.
@ DoubleTyID
64-bit floating point type
@ X86_FP80TyID
80-bit floating point type (X87)
@ PPC_FP128TyID
128-bit floating point type (two 64-bits, PowerPC)
@ FP128TyID
128-bit floating point type (112-bit significand)
bool isFirstClassType() const
Return true if the type is "first class", meaning it is a valid type for a Value.
TypeID getTypeID() const
Return the type id for the type.
Value * getOperand(unsigned i) const
unsigned getNumOperands() const
LLVM Value Representation.
Type * getType() const
All values are typed, get the type of this value.
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
This is an optimization pass for GlobalISel generic memory operations.
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
AtomicOrdering
Atomic ordering for LLVM's memory model.
static ExponentType semanticsMinExponent(const fltSemantics &)
static unsigned int semanticsSizeInBits(const fltSemantics &)
static ExponentType semanticsMaxExponent(const fltSemantics &)
static unsigned int semanticsPrecision(const fltSemantics &)
This struct is a compact representation of a valid (non-zero power of two) alignment.