enum { RecursionLimit = 3 };
STATISTIC(NumExpand, "Number of expansions");
-STATISTIC(NumFactor , "Number of factorizations");
STATISTIC(NumReassoc, "Number of reassociations");
+namespace {
struct Query {
const DataLayout *DL;
const TargetLibraryInfo *TLI;
const DominatorTree *DT;
+ AssumptionTracker *AT;
+ const Instruction *CxtI;
Query(const DataLayout *DL, const TargetLibraryInfo *tli,
- const DominatorTree *dt) : DL(DL), TLI(tli), DT(dt) {}
+ const DominatorTree *dt, AssumptionTracker *at = nullptr,
+ const Instruction *cxti = nullptr)
+ : DL(DL), TLI(tli), DT(dt), AT(at), CxtI(cxti) {}
};
+} // end anonymous namespace
static Value *SimplifyAndInst(Value *, Value *, const Query &, unsigned);
static Value *SimplifyBinOp(unsigned, Value *, Value *, const Query &,
return nullptr;
}
-/// FactorizeBinOp - Simplify "LHS Opcode RHS" by factorizing out a common term
-/// using the operation OpCodeToExtract. For example, when Opcode is Add and
-/// OpCodeToExtract is Mul then this tries to turn "(A*B)+(A*C)" into "A*(B+C)".
-/// Returns the simplified value, or null if no simplification was performed.
-static Value *FactorizeBinOp(unsigned Opcode, Value *LHS, Value *RHS,
- unsigned OpcToExtract, const Query &Q,
- unsigned MaxRecurse) {
- Instruction::BinaryOps OpcodeToExtract = (Instruction::BinaryOps)OpcToExtract;
- // Recursion is always used, so bail out at once if we already hit the limit.
- if (!MaxRecurse--)
- return nullptr;
-
- BinaryOperator *Op0 = dyn_cast<BinaryOperator>(LHS);
- BinaryOperator *Op1 = dyn_cast<BinaryOperator>(RHS);
-
- if (!Op0 || Op0->getOpcode() != OpcodeToExtract ||
- !Op1 || Op1->getOpcode() != OpcodeToExtract)
- return nullptr;
-
- // The expression has the form "(A op' B) op (C op' D)".
- Value *A = Op0->getOperand(0), *B = Op0->getOperand(1);
- Value *C = Op1->getOperand(0), *D = Op1->getOperand(1);
-
- // Use left distributivity, i.e. "X op' (Y op Z) = (X op' Y) op (X op' Z)".
- // Does the instruction have the form "(A op' B) op (A op' D)" or, in the
- // commutative case, "(A op' B) op (C op' A)"?
- if (A == C || (Instruction::isCommutative(OpcodeToExtract) && A == D)) {
- Value *DD = A == C ? D : C;
- // Form "A op' (B op DD)" if it simplifies completely.
- // Does "B op DD" simplify?
- if (Value *V = SimplifyBinOp(Opcode, B, DD, Q, MaxRecurse)) {
- // It does! Return "A op' V" if it simplifies or is already available.
- // If V equals B then "A op' V" is just the LHS. If V equals DD then
- // "A op' V" is just the RHS.
- if (V == B || V == DD) {
- ++NumFactor;
- return V == B ? LHS : RHS;
- }
- // Otherwise return "A op' V" if it simplifies.
- if (Value *W = SimplifyBinOp(OpcodeToExtract, A, V, Q, MaxRecurse)) {
- ++NumFactor;
- return W;
- }
- }
- }
-
- // Use right distributivity, i.e. "(X op Y) op' Z = (X op' Z) op (Y op' Z)".
- // Does the instruction have the form "(A op' B) op (C op' B)" or, in the
- // commutative case, "(A op' B) op (B op' D)"?
- if (B == D || (Instruction::isCommutative(OpcodeToExtract) && B == C)) {
- Value *CC = B == D ? C : D;
- // Form "(A op CC) op' B" if it simplifies completely..
- // Does "A op CC" simplify?
- if (Value *V = SimplifyBinOp(Opcode, A, CC, Q, MaxRecurse)) {
- // It does! Return "V op' B" if it simplifies or is already available.
- // If V equals A then "V op' B" is just the LHS. If V equals CC then
- // "V op' B" is just the RHS.
- if (V == A || V == CC) {
- ++NumFactor;
- return V == A ? LHS : RHS;
- }
- // Otherwise return "V op' B" if it simplifies.
- if (Value *W = SimplifyBinOp(OpcodeToExtract, V, B, Q, MaxRecurse)) {
- ++NumFactor;
- return W;
- }
- }
- }
-
- return nullptr;
-}
-
/// SimplifyAssociativeBinOp - Generic simplifications for associative binary
/// operations. Returns the simpler value, or null if none was found.
static Value *SimplifyAssociativeBinOp(unsigned Opc, Value *LHS, Value *RHS,
MaxRecurse))
return V;
- // Mul distributes over Add. Try some generic simplifications based on this.
- if (Value *V = FactorizeBinOp(Instruction::Add, Op0, Op1, Instruction::Mul,
- Q, MaxRecurse))
- return V;
-
// Threading Add over selects and phi nodes is pointless, so don't bother.
// Threading over the select in "A + select(cond, B, C)" means evaluating
// "A+B" and "A+C" and seeing if they are equal; but they are equal if and
Value *llvm::SimplifyAddInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW,
const DataLayout *DL, const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyAddInst(Op0, Op1, isNSW, isNUW, Query (DL, TLI, DT),
- RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyAddInst(Op0, Op1, isNSW, isNUW,
+ Query (DL, TLI, DT, AT, CxtI), RecursionLimit);
}
/// \brief Compute the base pointer and cumulative constant offsets for V.
if (Op0 == Op1)
return Constant::getNullValue(Op0->getType());
- // (X*2) - X -> X
- // (X<<1) - X -> X
- Value *X = nullptr;
- if (match(Op0, m_Mul(m_Specific(Op1), m_ConstantInt<2>())) ||
- match(Op0, m_Shl(m_Specific(Op1), m_One())))
- return Op1;
+ // X - (0 - Y) -> X if the second sub is NUW.
+ // If Y != 0, 0 - Y is a poison value.
+ // If Y == 0, 0 - Y simplifies to 0.
+ if (BinaryOperator::isNeg(Op1)) {
+ if (const auto *BO = dyn_cast<BinaryOperator>(Op1)) {
+ assert(BO->getOpcode() == Instruction::Sub &&
+ "Expected a subtraction operator!");
+ if (BO->hasNoUnsignedWrap())
+ return Op0;
+ }
+ }
// (X + Y) - Z -> X + (Y - Z) or Y + (X - Z) if everything simplifies.
// For example, (X + Y) - Y -> X; (Y + X) - Y -> X
- Value *Y = nullptr, *Z = Op1;
+ Value *X = nullptr, *Y = nullptr, *Z = Op1;
if (MaxRecurse && match(Op0, m_Add(m_Value(X), m_Value(Y)))) { // (X + Y) - Z
// See if "V === Y - Z" simplifies.
if (Value *V = SimplifyBinOp(Instruction::Sub, Y, Z, Q, MaxRecurse-1))
if (Constant *Result = computePointerDifference(Q.DL, X, Y))
return ConstantExpr::getIntegerCast(Result, Op0->getType(), true);
- // Mul distributes over Sub. Try some generic simplifications based on this.
- if (Value *V = FactorizeBinOp(Instruction::Sub, Op0, Op1, Instruction::Mul,
- Q, MaxRecurse))
- return V;
-
// i1 sub -> xor.
if (MaxRecurse && Op0->getType()->isIntegerTy(1))
if (Value *V = SimplifyXorInst(Op0, Op1, Q, MaxRecurse-1))
Value *llvm::SimplifySubInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW,
const DataLayout *DL, const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifySubInst(Op0, Op1, isNSW, isNUW, Query (DL, TLI, DT),
- RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifySubInst(Op0, Op1, isNSW, isNUW,
+ Query (DL, TLI, DT, AT, CxtI), RecursionLimit);
}
/// Given operands for an FAdd, see if we can fold the result. If not, this
Value *llvm::SimplifyFAddInst(Value *Op0, Value *Op1, FastMathFlags FMF,
const DataLayout *DL, const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyFAddInst(Op0, Op1, FMF, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyFAddInst(Op0, Op1, FMF, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
Value *llvm::SimplifyFSubInst(Value *Op0, Value *Op1, FastMathFlags FMF,
const DataLayout *DL, const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyFSubInst(Op0, Op1, FMF, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyFSubInst(Op0, Op1, FMF, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
Value *llvm::SimplifyFMulInst(Value *Op0, Value *Op1,
FastMathFlags FMF,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyFMulInst(Op0, Op1, FMF, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyFMulInst(Op0, Op1, FMF, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
Value *llvm::SimplifyMulInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyMulInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyMulInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
/// SimplifyDiv - Given operands for an SDiv or UDiv, see if we can
Value *llvm::SimplifySDivInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifySDivInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifySDivInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
/// SimplifyUDivInst - Given operands for a UDiv, see if we can
Value *llvm::SimplifyUDivInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyUDivInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyUDivInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
static Value *SimplifyFDivInst(Value *Op0, Value *Op1, const Query &Q,
Value *llvm::SimplifyFDivInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyFDivInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyFDivInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
/// SimplifyRem - Given operands for an SRem or URem, see if we can
Value *llvm::SimplifySRemInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifySRemInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifySRemInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
/// SimplifyURemInst - Given operands for a URem, see if we can
Value *llvm::SimplifyURemInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyURemInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyURemInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
static Value *SimplifyFRemInst(Value *Op0, Value *Op1, const Query &,
Value *llvm::SimplifyFRemInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyFRemInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyFRemInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
/// isUndefShift - Returns true if a shift by \c Amount always yields undef.
Value *llvm::SimplifyShlInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW,
const DataLayout *DL, const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyShlInst(Op0, Op1, isNSW, isNUW, Query (DL, TLI, DT),
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyShlInst(Op0, Op1, isNSW, isNUW, Query (DL, TLI, DT, AT, CxtI),
RecursionLimit);
}
Value *llvm::SimplifyLShrInst(Value *Op0, Value *Op1, bool isExact,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyLShrInst(Op0, Op1, isExact, Query (DL, TLI, DT),
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyLShrInst(Op0, Op1, isExact, Query (DL, TLI, DT, AT, CxtI),
RecursionLimit);
}
cast<OverflowingBinaryOperator>(Op0)->hasNoSignedWrap())
return X;
+ // Arithmetic shifting an all-sign-bit value is a no-op.
+ unsigned NumSignBits = ComputeNumSignBits(Op0, Q.DL, 0, Q.AT, Q.CxtI, Q.DT);
+ if (NumSignBits == Op0->getType()->getScalarSizeInBits())
+ return Op0;
+
return nullptr;
}
Value *llvm::SimplifyAShrInst(Value *Op0, Value *Op1, bool isExact,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyAShrInst(Op0, Op1, isExact, Query (DL, TLI, DT),
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyAShrInst(Op0, Op1, isExact, Query (DL, TLI, DT, AT, CxtI),
RecursionLimit);
}
// A & (-A) = A if A is a power of two or zero.
if (match(Op0, m_Neg(m_Specific(Op1))) ||
match(Op1, m_Neg(m_Specific(Op0)))) {
- if (isKnownToBeAPowerOfTwo(Op0, /*OrZero*/true))
+ if (isKnownToBeAPowerOfTwo(Op0, /*OrZero*/true, 0, Q.AT, Q.CxtI, Q.DT))
return Op0;
- if (isKnownToBeAPowerOfTwo(Op1, /*OrZero*/true))
+ if (isKnownToBeAPowerOfTwo(Op1, /*OrZero*/true, 0, Q.AT, Q.CxtI, Q.DT))
return Op1;
}
Q, MaxRecurse))
return V;
- // Or distributes over And. Try some generic simplifications based on this.
- if (Value *V = FactorizeBinOp(Instruction::And, Op0, Op1, Instruction::Or,
- Q, MaxRecurse))
- return V;
-
// If the operation is with the result of a select instruction, check whether
// operating on either branch of the select always yields the same value.
if (isa<SelectInst>(Op0) || isa<SelectInst>(Op1))
Value *llvm::SimplifyAndInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyAndInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyAndInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
/// SimplifyOrInst - Given operands for an Or, see if we can
MaxRecurse))
return V;
- // And distributes over Or. Try some generic simplifications based on this.
- if (Value *V = FactorizeBinOp(Instruction::Or, Op0, Op1, Instruction::And,
- Q, MaxRecurse))
- return V;
-
// If the operation is with the result of a select instruction, check whether
// operating on either branch of the select always yields the same value.
if (isa<SelectInst>(Op0) || isa<SelectInst>(Op1))
MaxRecurse))
return V;
+ // (A & C)|(B & D)
+ Value *C = nullptr, *D = nullptr;
+ if (match(Op0, m_And(m_Value(A), m_Value(C))) &&
+ match(Op1, m_And(m_Value(B), m_Value(D)))) {
+ ConstantInt *C1 = dyn_cast<ConstantInt>(C);
+ ConstantInt *C2 = dyn_cast<ConstantInt>(D);
+ if (C1 && C2 && (C1->getValue() == ~C2->getValue())) {
+ // (A & C1)|(B & C2)
+ // If we have: ((V + N) & C1) | (V & C2)
+ // .. and C2 = ~C1 and C2 is 0+1+ and (N & C2) == 0
+ // replace with V+N.
+ Value *V1, *V2;
+ if ((C2->getValue() & (C2->getValue() + 1)) == 0 && // C2 == 0+1+
+ match(A, m_Add(m_Value(V1), m_Value(V2)))) {
+ // Add commutes, try both ways.
+ if (V1 == B && MaskedValueIsZero(V2, C2->getValue(), Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT))
+ return A;
+ if (V2 == B && MaskedValueIsZero(V1, C2->getValue(), Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT))
+ return A;
+ }
+ // Or commutes, try both ways.
+ if ((C1->getValue() & (C1->getValue() + 1)) == 0 &&
+ match(B, m_Add(m_Value(V1), m_Value(V2)))) {
+ // Add commutes, try both ways.
+ if (V1 == A && MaskedValueIsZero(V2, C1->getValue(), Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT))
+ return B;
+ if (V2 == A && MaskedValueIsZero(V1, C1->getValue(), Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT))
+ return B;
+ }
+ }
+ }
+
// If the operation is with the result of a phi instruction, check whether
// operating on all incoming values of the phi always yields the same value.
if (isa<PHINode>(Op0) || isa<PHINode>(Op1))
Value *llvm::SimplifyOrInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyOrInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyOrInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
/// SimplifyXorInst - Given operands for a Xor, see if we can
MaxRecurse))
return V;
- // And distributes over Xor. Try some generic simplifications based on this.
- if (Value *V = FactorizeBinOp(Instruction::Xor, Op0, Op1, Instruction::And,
- Q, MaxRecurse))
- return V;
-
// Threading Xor over selects and phi nodes is pointless, so don't bother.
// Threading over the select in "A ^ select(cond, B, C)" means evaluating
// "A^B" and "A^C" and seeing if they are equal; but they are equal if and
Value *llvm::SimplifyXorInst(Value *Op0, Value *Op1, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyXorInst(Op0, Op1, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyXorInst(Op0, Op1, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
static Type *GetCompareTy(Value *Op) {
return getTrue(ITy);
case ICmpInst::ICMP_EQ:
case ICmpInst::ICMP_ULE:
- if (isKnownNonZero(LHS, Q.DL))
+ if (isKnownNonZero(LHS, Q.DL, 0, Q.AT, Q.CxtI, Q.DT))
return getFalse(ITy);
break;
case ICmpInst::ICMP_NE:
case ICmpInst::ICMP_UGT:
- if (isKnownNonZero(LHS, Q.DL))
+ if (isKnownNonZero(LHS, Q.DL, 0, Q.AT, Q.CxtI, Q.DT))
return getTrue(ITy);
break;
case ICmpInst::ICMP_SLT:
- ComputeSignBit(LHS, LHSKnownNonNegative, LHSKnownNegative, Q.DL);
+ ComputeSignBit(LHS, LHSKnownNonNegative, LHSKnownNegative, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
if (LHSKnownNegative)
return getTrue(ITy);
if (LHSKnownNonNegative)
return getFalse(ITy);
break;
case ICmpInst::ICMP_SLE:
- ComputeSignBit(LHS, LHSKnownNonNegative, LHSKnownNegative, Q.DL);
+ ComputeSignBit(LHS, LHSKnownNonNegative, LHSKnownNegative, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
if (LHSKnownNegative)
return getTrue(ITy);
- if (LHSKnownNonNegative && isKnownNonZero(LHS, Q.DL))
+ if (LHSKnownNonNegative && isKnownNonZero(LHS, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT))
return getFalse(ITy);
break;
case ICmpInst::ICMP_SGE:
- ComputeSignBit(LHS, LHSKnownNonNegative, LHSKnownNegative, Q.DL);
+ ComputeSignBit(LHS, LHSKnownNonNegative, LHSKnownNegative, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
if (LHSKnownNegative)
return getFalse(ITy);
if (LHSKnownNonNegative)
return getTrue(ITy);
break;
case ICmpInst::ICMP_SGT:
- ComputeSignBit(LHS, LHSKnownNonNegative, LHSKnownNegative, Q.DL);
+ ComputeSignBit(LHS, LHSKnownNonNegative, LHSKnownNegative, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
if (LHSKnownNegative)
return getFalse(ITy);
- if (LHSKnownNonNegative && isKnownNonZero(LHS, Q.DL))
+ if (LHSKnownNonNegative && isKnownNonZero(LHS, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT))
return getTrue(ITy);
break;
}
// Many binary operators with constant RHS have easy to compute constant
// range. Use them to check whether the comparison is a tautology.
- uint32_t Width = CI->getBitWidth();
+ unsigned Width = CI->getBitWidth();
APInt Lower = APInt(Width, 0);
APInt Upper = APInt(Width, 0);
ConstantInt *CI2;
if (!CI2->isZero())
Upper = NegOne.udiv(CI2->getValue()) + 1;
} else if (match(LHS, m_SDiv(m_ConstantInt(CI2), m_Value()))) {
- // 'sdiv CI2, x' produces [-|CI2|, |CI2|].
- Upper = CI2->getValue().abs() + 1;
- Lower = (-Upper) + 1;
+ if (CI2->isMinSignedValue()) {
+ // 'sdiv INT_MIN, x' produces [INT_MIN, INT_MIN / -2].
+ Lower = CI2->getValue();
+ Upper = Lower.lshr(1) + 1;
+ } else {
+ // 'sdiv CI2, x' produces [-|CI2|, |CI2|].
+ Upper = CI2->getValue().abs() + 1;
+ Lower = (-Upper) + 1;
+ }
} else if (match(LHS, m_SDiv(m_Value(), m_ConstantInt(CI2)))) {
- // 'sdiv x, CI2' produces [INT_MIN / CI2, INT_MAX / CI2].
APInt IntMin = APInt::getSignedMinValue(Width);
APInt IntMax = APInt::getSignedMaxValue(Width);
- APInt Val = CI2->getValue().abs();
- if (!Val.isMinValue()) {
+ APInt Val = CI2->getValue();
+ if (Val.isAllOnesValue()) {
+ // 'sdiv x, -1' produces [INT_MIN + 1, INT_MAX]
+ // where CI2 != -1 and CI2 != 0 and CI2 != 1
+ Lower = IntMin + 1;
+ Upper = IntMax + 1;
+ } else if (Val.countLeadingZeros() < Width - 1) {
+ // 'sdiv x, CI2' produces [INT_MIN / CI2, INT_MAX / CI2]
+ // where CI2 != -1 and CI2 != 0 and CI2 != 1
Lower = IntMin.sdiv(Val);
- Upper = IntMax.sdiv(Val) + 1;
+ Upper = IntMax.sdiv(Val);
+ if (Lower.sgt(Upper))
+ std::swap(Lower, Upper);
+ Upper = Upper + 1;
+ assert(Upper != Lower && "Upper part of range has wrapped!");
+ }
+ } else if (match(LHS, m_NUWShl(m_ConstantInt(CI2), m_Value()))) {
+ // 'shl nuw CI2, x' produces [CI2, CI2 << CLZ(CI2)]
+ Lower = CI2->getValue();
+ Upper = Lower.shl(Lower.countLeadingZeros()) + 1;
+ } else if (match(LHS, m_NSWShl(m_ConstantInt(CI2), m_Value()))) {
+ if (CI2->isNegative()) {
+ // 'shl nsw CI2, x' produces [CI2 << CLO(CI2)-1, CI2]
+ unsigned ShiftAmount = CI2->getValue().countLeadingOnes() - 1;
+ Lower = CI2->getValue().shl(ShiftAmount);
+ Upper = CI2->getValue() + 1;
+ } else {
+ // 'shl nsw CI2, x' produces [CI2, CI2 << CLZ(CI2)-1]
+ unsigned ShiftAmount = CI2->getValue().countLeadingZeros() - 1;
+ Lower = CI2->getValue();
+ Upper = CI2->getValue().shl(ShiftAmount) + 1;
}
} else if (match(LHS, m_LShr(m_Value(), m_ConstantInt(CI2)))) {
// 'lshr x, CI2' produces [0, UINT_MAX >> CI2].
APInt NegOne = APInt::getAllOnesValue(Width);
if (CI2->getValue().ult(Width))
Upper = NegOne.lshr(CI2->getValue()) + 1;
+ } else if (match(LHS, m_LShr(m_ConstantInt(CI2), m_Value()))) {
+ // 'lshr CI2, x' produces [CI2 >> (Width-1), CI2].
+ unsigned ShiftAmount = Width - 1;
+ if (!CI2->isZero() && cast<BinaryOperator>(LHS)->isExact())
+ ShiftAmount = CI2->getValue().countTrailingZeros();
+ Lower = CI2->getValue().lshr(ShiftAmount);
+ Upper = CI2->getValue() + 1;
} else if (match(LHS, m_AShr(m_Value(), m_ConstantInt(CI2)))) {
// 'ashr x, CI2' produces [INT_MIN >> CI2, INT_MAX >> CI2].
APInt IntMin = APInt::getSignedMinValue(Width);
Lower = IntMin.ashr(CI2->getValue());
Upper = IntMax.ashr(CI2->getValue()) + 1;
}
+ } else if (match(LHS, m_AShr(m_ConstantInt(CI2), m_Value()))) {
+ unsigned ShiftAmount = Width - 1;
+ if (!CI2->isZero() && cast<BinaryOperator>(LHS)->isExact())
+ ShiftAmount = CI2->getValue().countTrailingZeros();
+ if (CI2->isNegative()) {
+ // 'ashr CI2, x' produces [CI2, CI2 >> (Width-1)]
+ Lower = CI2->getValue();
+ Upper = CI2->getValue().ashr(ShiftAmount) + 1;
+ } else {
+ // 'ashr CI2, x' produces [CI2 >> (Width-1), CI2]
+ Lower = CI2->getValue().ashr(ShiftAmount);
+ Upper = CI2->getValue() + 1;
+ }
} else if (match(LHS, m_Or(m_Value(), m_ConstantInt(CI2)))) {
// 'or x, CI2' produces [CI2, UINT_MAX].
Lower = CI2->getValue();
}
}
+ // If a bit is known to be zero for A and known to be one for B,
+ // then A and B cannot be equal.
+ if (ICmpInst::isEquality(Pred)) {
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(RHS)) {
+ uint32_t BitWidth = CI->getBitWidth();
+ APInt LHSKnownZero(BitWidth, 0);
+ APInt LHSKnownOne(BitWidth, 0);
+ computeKnownBits(LHS, LHSKnownZero, LHSKnownOne, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
+ APInt RHSKnownZero(BitWidth, 0);
+ APInt RHSKnownOne(BitWidth, 0);
+ computeKnownBits(RHS, RHSKnownZero, RHSKnownOne, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
+ if (((LHSKnownOne & RHSKnownZero) != 0) ||
+ ((LHSKnownZero & RHSKnownOne) != 0))
+ return (Pred == ICmpInst::ICMP_EQ)
+ ? ConstantInt::getFalse(CI->getContext())
+ : ConstantInt::getTrue(CI->getContext());
+ }
+ }
+
// Special logic for binary operators.
BinaryOperator *LBO = dyn_cast<BinaryOperator>(LHS);
BinaryOperator *RBO = dyn_cast<BinaryOperator>(RHS);
break;
case ICmpInst::ICMP_SGT:
case ICmpInst::ICMP_SGE:
- ComputeSignBit(RHS, KnownNonNegative, KnownNegative, Q.DL);
+ ComputeSignBit(RHS, KnownNonNegative, KnownNegative, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
if (!KnownNonNegative)
break;
// fall-through
return getFalse(ITy);
case ICmpInst::ICMP_SLT:
case ICmpInst::ICMP_SLE:
- ComputeSignBit(RHS, KnownNonNegative, KnownNegative, Q.DL);
+ ComputeSignBit(RHS, KnownNonNegative, KnownNegative, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
if (!KnownNonNegative)
break;
// fall-through
break;
case ICmpInst::ICMP_SGT:
case ICmpInst::ICMP_SGE:
- ComputeSignBit(LHS, KnownNonNegative, KnownNegative, Q.DL);
+ ComputeSignBit(LHS, KnownNonNegative, KnownNegative, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
if (!KnownNonNegative)
break;
// fall-through
return getTrue(ITy);
case ICmpInst::ICMP_SLT:
case ICmpInst::ICMP_SLE:
- ComputeSignBit(LHS, KnownNonNegative, KnownNegative, Q.DL);
+ ComputeSignBit(LHS, KnownNonNegative, KnownNegative, Q.DL,
+ 0, Q.AT, Q.CxtI, Q.DT);
if (!KnownNonNegative)
break;
// fall-through
return getTrue(ITy);
}
+ // handle:
+ // CI2 << X == CI
+ // CI2 << X != CI
+ //
+ // where CI2 is a power of 2 and CI isn't
+ if (auto *CI = dyn_cast<ConstantInt>(RHS)) {
+ const APInt *CI2Val, *CIVal = &CI->getValue();
+ if (LBO && match(LBO, m_Shl(m_APInt(CI2Val), m_Value())) &&
+ CI2Val->isPowerOf2()) {
+ if (!CIVal->isPowerOf2()) {
+ // CI2 << X can equal zero in some circumstances,
+ // this simplification is unsafe if CI is zero.
+ //
+ // We know it is safe if:
+ // - The shift is nsw, we can't shift out the one bit.
+ // - The shift is nuw, we can't shift out the one bit.
+ // - CI2 is one
+ // - CI isn't zero
+ if (LBO->hasNoSignedWrap() || LBO->hasNoUnsignedWrap() ||
+ *CI2Val == 1 || !CI->isZero()) {
+ if (Pred == ICmpInst::ICMP_EQ)
+ return ConstantInt::getFalse(RHS->getContext());
+ if (Pred == ICmpInst::ICMP_NE)
+ return ConstantInt::getTrue(RHS->getContext());
+ }
+ }
+ if (CIVal->isSignBit() && *CI2Val == 1) {
+ if (Pred == ICmpInst::ICMP_UGT)
+ return ConstantInt::getFalse(RHS->getContext());
+ if (Pred == ICmpInst::ICMP_ULE)
+ return ConstantInt::getTrue(RHS->getContext());
+ }
+ }
+ }
+
if (MaxRecurse && LBO && RBO && LBO->getOpcode() == RBO->getOpcode() &&
LBO->getOperand(1) == RBO->getOperand(1)) {
switch (LBO->getOpcode()) {
Value *llvm::SimplifyICmpInst(unsigned Predicate, Value *LHS, Value *RHS,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyICmpInst(Predicate, LHS, RHS, Query (DL, TLI, DT),
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ Instruction *CxtI) {
+ return ::SimplifyICmpInst(Predicate, LHS, RHS, Query (DL, TLI, DT, AT, CxtI),
RecursionLimit);
}
Value *llvm::SimplifyFCmpInst(unsigned Predicate, Value *LHS, Value *RHS,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyFCmpInst(Predicate, LHS, RHS, Query (DL, TLI, DT),
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyFCmpInst(Predicate, LHS, RHS, Query (DL, TLI, DT, AT, CxtI),
RecursionLimit);
}
Value *llvm::SimplifySelectInst(Value *Cond, Value *TrueVal, Value *FalseVal,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifySelectInst(Cond, TrueVal, FalseVal, Query (DL, TLI, DT),
- RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifySelectInst(Cond, TrueVal, FalseVal,
+ Query (DL, TLI, DT, AT, CxtI), RecursionLimit);
}
/// SimplifyGEPInst - Given operands for an GetElementPtrInst, see if we can
static Value *SimplifyGEPInst(ArrayRef<Value *> Ops, const Query &Q, unsigned) {
// The type of the GEP pointer operand.
PointerType *PtrTy = cast<PointerType>(Ops[0]->getType()->getScalarType());
+ unsigned AS = PtrTy->getAddressSpace();
// getelementptr P -> P.
if (Ops.size() == 1)
return Ops[0];
- if (isa<UndefValue>(Ops[0])) {
- // Compute the (pointer) type returned by the GEP instruction.
- Type *LastType = GetElementPtrInst::getIndexedType(PtrTy, Ops.slice(1));
- Type *GEPTy = PointerType::get(LastType, PtrTy->getAddressSpace());
- if (VectorType *VT = dyn_cast<VectorType>(Ops[0]->getType()))
- GEPTy = VectorType::get(GEPTy, VT->getNumElements());
+ // Compute the (pointer) type returned by the GEP instruction.
+ Type *LastType = GetElementPtrInst::getIndexedType(PtrTy, Ops.slice(1));
+ Type *GEPTy = PointerType::get(LastType, AS);
+ if (VectorType *VT = dyn_cast<VectorType>(Ops[0]->getType()))
+ GEPTy = VectorType::get(GEPTy, VT->getNumElements());
+
+ if (isa<UndefValue>(Ops[0]))
return UndefValue::get(GEPTy);
- }
if (Ops.size() == 2) {
// getelementptr P, 0 -> P.
if (match(Ops[1], m_Zero()))
return Ops[0];
- // getelementptr P, N -> P if P points to a type of zero size.
- if (Q.DL) {
- Type *Ty = PtrTy->getElementType();
- if (Ty->isSized() && Q.DL->getTypeAllocSize(Ty) == 0)
+
+ Type *Ty = PtrTy->getElementType();
+ if (Q.DL && Ty->isSized()) {
+ Value *P;
+ uint64_t C;
+ uint64_t TyAllocSize = Q.DL->getTypeAllocSize(Ty);
+ // getelementptr P, N -> P if P points to a type of zero size.
+ if (TyAllocSize == 0)
return Ops[0];
+
+ // The following transforms are only safe if the ptrtoint cast
+ // doesn't truncate the pointers.
+ if (Ops[1]->getType()->getScalarSizeInBits() ==
+ Q.DL->getPointerSizeInBits(AS)) {
+ auto PtrToIntOrZero = [GEPTy](Value *P) -> Value * {
+ if (match(P, m_Zero()))
+ return Constant::getNullValue(GEPTy);
+ Value *Temp;
+ if (match(P, m_PtrToInt(m_Value(Temp))))
+ if (Temp->getType() == GEPTy)
+ return Temp;
+ return nullptr;
+ };
+
+ // getelementptr V, (sub P, V) -> P if P points to a type of size 1.
+ if (TyAllocSize == 1 &&
+ match(Ops[1], m_Sub(m_Value(P), m_PtrToInt(m_Specific(Ops[0])))))
+ if (Value *R = PtrToIntOrZero(P))
+ return R;
+
+ // getelementptr V, (ashr (sub P, V), C) -> Q
+ // if P points to a type of size 1 << C.
+ if (match(Ops[1],
+ m_AShr(m_Sub(m_Value(P), m_PtrToInt(m_Specific(Ops[0]))),
+ m_ConstantInt(C))) &&
+ TyAllocSize == 1ULL << C)
+ if (Value *R = PtrToIntOrZero(P))
+ return R;
+
+ // getelementptr V, (sdiv (sub P, V), C) -> Q
+ // if P points to a type of size C.
+ if (match(Ops[1],
+ m_SDiv(m_Sub(m_Value(P), m_PtrToInt(m_Specific(Ops[0]))),
+ m_SpecificInt(TyAllocSize))))
+ if (Value *R = PtrToIntOrZero(P))
+ return R;
+ }
}
}
Value *llvm::SimplifyGEPInst(ArrayRef<Value *> Ops, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyGEPInst(Ops, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyGEPInst(Ops, Query (DL, TLI, DT, AT, CxtI), RecursionLimit);
}
/// SimplifyInsertValueInst - Given operands for an InsertValueInst, see if we
ArrayRef<unsigned> Idxs,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyInsertValueInst(Agg, Val, Idxs, Query (DL, TLI, DT),
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyInsertValueInst(Agg, Val, Idxs,
+ Query (DL, TLI, DT, AT, CxtI),
RecursionLimit);
}
Value *llvm::SimplifyTruncInst(Value *Op, Type *Ty, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyTruncInst(Op, Ty, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT,
+ AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyTruncInst(Op, Ty, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
//=== Helper functions for higher up the class hierarchy.
Value *llvm::SimplifyBinOp(unsigned Opcode, Value *LHS, Value *RHS,
const DataLayout *DL, const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyBinOp(Opcode, LHS, RHS, Query (DL, TLI, DT), RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyBinOp(Opcode, LHS, RHS, Query (DL, TLI, DT, AT, CxtI),
+ RecursionLimit);
}
/// SimplifyCmpInst - Given operands for a CmpInst, see if we can
Value *llvm::SimplifyCmpInst(unsigned Predicate, Value *LHS, Value *RHS,
const DataLayout *DL, const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyCmpInst(Predicate, LHS, RHS, Query (DL, TLI, DT),
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyCmpInst(Predicate, LHS, RHS, Query (DL, TLI, DT, AT, CxtI),
RecursionLimit);
}
Value *llvm::SimplifyCall(Value *V, User::op_iterator ArgBegin,
User::op_iterator ArgEnd, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyCall(V, ArgBegin, ArgEnd, Query(DL, TLI, DT),
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyCall(V, ArgBegin, ArgEnd, Query(DL, TLI, DT, AT, CxtI),
RecursionLimit);
}
Value *llvm::SimplifyCall(Value *V, ArrayRef<Value *> Args,
const DataLayout *DL, const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return ::SimplifyCall(V, Args.begin(), Args.end(), Query(DL, TLI, DT),
- RecursionLimit);
+ const DominatorTree *DT, AssumptionTracker *AT,
+ const Instruction *CxtI) {
+ return ::SimplifyCall(V, Args.begin(), Args.end(),
+ Query(DL, TLI, DT, AT, CxtI), RecursionLimit);
}
/// SimplifyInstruction - See if we can compute a simplified version of this
/// instruction. If not, this returns null.
Value *llvm::SimplifyInstruction(Instruction *I, const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
+ const DominatorTree *DT,
+ AssumptionTracker *AT) {
Value *Result;
switch (I->getOpcode()) {
break;
case Instruction::FAdd:
Result = SimplifyFAddInst(I->getOperand(0), I->getOperand(1),
- I->getFastMathFlags(), DL, TLI, DT);
+ I->getFastMathFlags(), DL, TLI, DT, AT, I);
break;
case Instruction::Add:
Result = SimplifyAddInst(I->getOperand(0), I->getOperand(1),
cast<BinaryOperator>(I)->hasNoSignedWrap(),
cast<BinaryOperator>(I)->hasNoUnsignedWrap(),
- DL, TLI, DT);
+ DL, TLI, DT, AT, I);
break;
case Instruction::FSub:
Result = SimplifyFSubInst(I->getOperand(0), I->getOperand(1),
- I->getFastMathFlags(), DL, TLI, DT);
+ I->getFastMathFlags(), DL, TLI, DT, AT, I);
break;
case Instruction::Sub:
Result = SimplifySubInst(I->getOperand(0), I->getOperand(1),
cast<BinaryOperator>(I)->hasNoSignedWrap(),
cast<BinaryOperator>(I)->hasNoUnsignedWrap(),
- DL, TLI, DT);
+ DL, TLI, DT, AT, I);
break;
case Instruction::FMul:
Result = SimplifyFMulInst(I->getOperand(0), I->getOperand(1),
- I->getFastMathFlags(), DL, TLI, DT);
+ I->getFastMathFlags(), DL, TLI, DT, AT, I);
break;
case Instruction::Mul:
- Result = SimplifyMulInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifyMulInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::SDiv:
- Result = SimplifySDivInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifySDivInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::UDiv:
- Result = SimplifyUDivInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifyUDivInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::FDiv:
- Result = SimplifyFDivInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifyFDivInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::SRem:
- Result = SimplifySRemInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifySRemInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::URem:
- Result = SimplifyURemInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifyURemInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::FRem:
- Result = SimplifyFRemInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifyFRemInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::Shl:
Result = SimplifyShlInst(I->getOperand(0), I->getOperand(1),
cast<BinaryOperator>(I)->hasNoSignedWrap(),
cast<BinaryOperator>(I)->hasNoUnsignedWrap(),
- DL, TLI, DT);
+ DL, TLI, DT, AT, I);
break;
case Instruction::LShr:
Result = SimplifyLShrInst(I->getOperand(0), I->getOperand(1),
cast<BinaryOperator>(I)->isExact(),
- DL, TLI, DT);
+ DL, TLI, DT, AT, I);
break;
case Instruction::AShr:
Result = SimplifyAShrInst(I->getOperand(0), I->getOperand(1),
cast<BinaryOperator>(I)->isExact(),
- DL, TLI, DT);
+ DL, TLI, DT, AT, I);
break;
case Instruction::And:
- Result = SimplifyAndInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifyAndInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::Or:
- Result = SimplifyOrInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifyOrInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT,
+ AT, I);
break;
case Instruction::Xor:
- Result = SimplifyXorInst(I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ Result = SimplifyXorInst(I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::ICmp:
Result = SimplifyICmpInst(cast<ICmpInst>(I)->getPredicate(),
- I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::FCmp:
Result = SimplifyFCmpInst(cast<FCmpInst>(I)->getPredicate(),
- I->getOperand(0), I->getOperand(1), DL, TLI, DT);
+ I->getOperand(0), I->getOperand(1),
+ DL, TLI, DT, AT, I);
break;
case Instruction::Select:
Result = SimplifySelectInst(I->getOperand(0), I->getOperand(1),
- I->getOperand(2), DL, TLI, DT);
+ I->getOperand(2), DL, TLI, DT, AT, I);
break;
case Instruction::GetElementPtr: {
SmallVector<Value*, 8> Ops(I->op_begin(), I->op_end());
- Result = SimplifyGEPInst(Ops, DL, TLI, DT);
+ Result = SimplifyGEPInst(Ops, DL, TLI, DT, AT, I);
break;
}
case Instruction::InsertValue: {
InsertValueInst *IV = cast<InsertValueInst>(I);
Result = SimplifyInsertValueInst(IV->getAggregateOperand(),
IV->getInsertedValueOperand(),
- IV->getIndices(), DL, TLI, DT);
+ IV->getIndices(), DL, TLI, DT, AT, I);
break;
}
case Instruction::PHI:
- Result = SimplifyPHINode(cast<PHINode>(I), Query (DL, TLI, DT));
+ Result = SimplifyPHINode(cast<PHINode>(I), Query (DL, TLI, DT, AT, I));
break;
case Instruction::Call: {
CallSite CS(cast<CallInst>(I));
Result = SimplifyCall(CS.getCalledValue(), CS.arg_begin(), CS.arg_end(),
- DL, TLI, DT);
+ DL, TLI, DT, AT, I);
break;
}
case Instruction::Trunc:
- Result = SimplifyTruncInst(I->getOperand(0), I->getType(), DL, TLI, DT);
+ Result = SimplifyTruncInst(I->getOperand(0), I->getType(), DL, TLI, DT,
+ AT, I);
break;
}
static bool replaceAndRecursivelySimplifyImpl(Instruction *I, Value *SimpleV,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
+ const DominatorTree *DT,
+ AssumptionTracker *AT) {
bool Simplified = false;
SmallSetVector<Instruction *, 8> Worklist;
I = Worklist[Idx];
// See if this instruction simplifies.
- SimpleV = SimplifyInstruction(I, DL, TLI, DT);
+ SimpleV = SimplifyInstruction(I, DL, TLI, DT, AT);
if (!SimpleV)
continue;
bool llvm::recursivelySimplifyInstruction(Instruction *I,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
- return replaceAndRecursivelySimplifyImpl(I, nullptr, DL, TLI, DT);
+ const DominatorTree *DT,
+ AssumptionTracker *AT) {
+ return replaceAndRecursivelySimplifyImpl(I, nullptr, DL, TLI, DT, AT);
}
bool llvm::replaceAndRecursivelySimplify(Instruction *I, Value *SimpleV,
const DataLayout *DL,
const TargetLibraryInfo *TLI,
- const DominatorTree *DT) {
+ const DominatorTree *DT,
+ AssumptionTracker *AT) {
assert(I != SimpleV && "replaceAndRecursivelySimplify(X,X) is not valid!");
assert(SimpleV && "Must provide a simplified value.");
- return replaceAndRecursivelySimplifyImpl(I, SimpleV, DL, TLI, DT);
+ return replaceAndRecursivelySimplifyImpl(I, SimpleV, DL, TLI, DT, AT);
}
projects / oota-llvm.git / blobdiff