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Diffstat (limited to 'lib/Transforms/Scalar/InstructionCombining.cpp')
-rw-r--r--lib/Transforms/Scalar/InstructionCombining.cpp155
1 files changed, 77 insertions, 78 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 9f7ff59f11..0a6153db81 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -857,7 +857,7 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
// If all of the demanded bits in the inputs are known zeros, return zero.
if ((DemandedMask & (RHSKnownZero|LHSKnownZero)) == DemandedMask)
- return Context->getNullValue(VTy);
+ return Constant::getNullValue(VTy);
} else if (I->getOpcode() == Instruction::Or) {
// We can simplify (X|Y) -> X or Y in the user's context if we know that
@@ -926,7 +926,7 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
// If all of the demanded bits in the inputs are known zeros, return zero.
if ((DemandedMask & (RHSKnownZero|LHSKnownZero)) == DemandedMask)
- return Context->getNullValue(VTy);
+ return Constant::getNullValue(VTy);
// If the RHS is a constant, see if we can simplify it.
if (ShrinkDemandedConstant(I, 1, DemandedMask & ~LHSKnownZero, Context))
@@ -1470,7 +1470,7 @@ Value *InstCombiner::SimplifyDemandedVectorElts(Value *V, APInt DemandedElts,
return 0;
const Type *EltTy = cast<VectorType>(V->getType())->getElementType();
- Constant *Zero = Context->getNullValue(EltTy);
+ Constant *Zero = Constant::getNullValue(EltTy);
Constant *Undef = UndefValue::get(EltTy);
std::vector<Constant*> Elts;
for (unsigned i = 0; i != VWidth; ++i) {
@@ -1808,7 +1808,7 @@ static Instruction *AssociativeOpt(BinaryOperator &Root, const Functor &F,
// Make what used to be the LHS of the root be the user of the root...
Value *ExtraOperand = TmpLHSI->getOperand(1);
if (&Root == TmpLHSI) {
- Root.replaceAllUsesWith(Context->getNullValue(TmpLHSI->getType()));
+ Root.replaceAllUsesWith(Constant::getNullValue(TmpLHSI->getType()));
return 0;
}
Root.replaceAllUsesWith(TmpLHSI); // Users now use TmpLHSI
@@ -2187,7 +2187,7 @@ Instruction *InstCombiner::visitAdd(BinaryOperator &I) {
// X + ~X --> -1 since ~X = -X-1
if (dyn_castNotVal(LHS, Context) == RHS ||
dyn_castNotVal(RHS, Context) == LHS)
- return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
// (A & C1)+(B & C2) --> (A & C1)|(B & C2) iff C1&C2 == 0
@@ -2417,7 +2417,7 @@ Instruction *InstCombiner::visitSub(BinaryOperator &I) {
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
if (Op0 == Op1) // sub X, X -> 0
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
// If this is a 'B = x-(-A)', change to B = x+A...
if (Value *V = dyn_castNegVal(Op1, Context))
@@ -2623,7 +2623,7 @@ Instruction *InstCombiner::visitMul(BinaryOperator &I) {
Value *Op0 = I.getOperand(0);
if (isa<UndefValue>(I.getOperand(1))) // undef * X -> 0
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
// Simplify mul instructions with a constant RHS...
if (Constant *Op1 = dyn_cast<Constant>(I.getOperand(1))) {
@@ -2904,7 +2904,7 @@ Instruction *InstCombiner::commonDivTransforms(BinaryOperator &I) {
if (isa<UndefValue>(Op0)) {
if (Op0->getType()->isFPOrFPVector())
return ReplaceInstUsesWith(I, Op0);
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
}
// X / undef -> undef
@@ -2952,7 +2952,7 @@ Instruction *InstCombiner::commonIDivTransforms(BinaryOperator &I) {
if (ConstantInt *LHSRHS = dyn_cast<ConstantInt>(LHS->getOperand(1))) {
if (MultiplyOverflows(RHS, LHSRHS,
I.getOpcode()==Instruction::SDiv, Context))
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
else
return BinaryOperator::Create(I.getOpcode(), LHS->getOperand(0),
ConstantExpr::getMul(RHS, LHSRHS));
@@ -2971,7 +2971,7 @@ Instruction *InstCombiner::commonIDivTransforms(BinaryOperator &I) {
// 0 / X == 0, we don't need to preserve faults!
if (ConstantInt *LHS = dyn_cast<ConstantInt>(Op0))
if (LHS->equalsInt(0))
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
// It can't be division by zero, hence it must be division by one.
if (I.getType() == Type::Int1Ty)
@@ -3007,7 +3007,7 @@ Instruction *InstCombiner::visitUDiv(BinaryOperator &I) {
Value *IC = InsertNewInstBefore(new ICmpInst(*Context,
ICmpInst::ICMP_ULT, Op0, C),
I);
- return SelectInst::Create(IC, Context->getNullValue(I.getType()),
+ return SelectInst::Create(IC, Constant::getNullValue(I.getType()),
ConstantInt::get(I.getType(), 1));
}
}
@@ -3108,7 +3108,7 @@ Instruction *InstCombiner::commonRemTransforms(BinaryOperator &I) {
if (isa<UndefValue>(Op0)) { // undef % X -> 0
if (I.getType()->isFPOrFPVector())
return ReplaceInstUsesWith(I, Op0); // X % undef -> undef (could be SNaN)
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
}
if (isa<UndefValue>(Op1))
return ReplaceInstUsesWith(I, Op1); // X % undef -> undef
@@ -3133,7 +3133,7 @@ Instruction *InstCombiner::commonIRemTransforms(BinaryOperator &I) {
// 0 % X == 0 for integer, we don't need to preserve faults!
if (Constant *LHS = dyn_cast<Constant>(Op0))
if (LHS->isNullValue())
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
if (ConstantInt *RHS = dyn_cast<ConstantInt>(Op1)) {
// X % 0 == undef, we don't need to preserve faults!
@@ -3141,7 +3141,7 @@ Instruction *InstCombiner::commonIRemTransforms(BinaryOperator &I) {
return ReplaceInstUsesWith(I, UndefValue::get(I.getType()));
if (RHS->equalsInt(1)) // X % 1 == 0
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
if (Instruction *Op0I = dyn_cast<Instruction>(Op0)) {
if (SelectInst *SI = dyn_cast<SelectInst>(Op0I)) {
@@ -3181,7 +3181,7 @@ Instruction *InstCombiner::visitURem(BinaryOperator &I) {
if (RHSI->getOpcode() == Instruction::Shl &&
isa<ConstantInt>(RHSI->getOperand(0))) {
if (cast<ConstantInt>(RHSI->getOperand(0))->getValue().isPowerOf2()) {
- Constant *N1 = Context->getAllOnesValue(I.getType());
+ Constant *N1 = Constant::getAllOnesValue(I.getType());
Value *Add = InsertNewInstBefore(BinaryOperator::CreateAdd(RHSI, N1,
"tmp"), I);
return BinaryOperator::CreateAnd(Op0, Add);
@@ -4008,7 +4008,7 @@ Instruction *InstCombiner::visitAnd(BinaryOperator &I) {
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
if (isa<UndefValue>(Op1)) // X & undef -> 0
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
// and X, X = X
if (Op0 == Op1)
@@ -4101,7 +4101,7 @@ Instruction *InstCombiner::visitAnd(BinaryOperator &I) {
// (1 >> x) & 1 --> zext(x == 0)
if (AndRHSMask == 1 && Op0LHS == AndRHS) {
Instruction *NewICmp = new ICmpInst(*Context, ICmpInst::ICMP_EQ,
- Op0RHS, Context->getNullValue(I.getType()));
+ Op0RHS, Constant::getNullValue(I.getType()));
InsertNewInstBefore(NewICmp, I);
return new ZExtInst(NewICmp, I.getType());
}
@@ -4159,7 +4159,7 @@ Instruction *InstCombiner::visitAnd(BinaryOperator &I) {
Value *Op1NotVal = dyn_castNotVal(Op1, Context);
if (Op0NotVal == Op1 || Op1NotVal == Op0) // A & ~A == ~A & A == 0
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
// (~A & ~B) == (~(A | B)) - De Morgan's Law
if (Op0NotVal && Op1NotVal && isOnlyUse(Op0) && isOnlyUse(Op1)) {
@@ -4733,7 +4733,7 @@ Instruction *InstCombiner::visitOr(BinaryOperator &I) {
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
if (isa<UndefValue>(Op1)) // X | undef -> -1
- return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
// or X, X = X
if (Op0 == Op1)
@@ -4934,14 +4934,14 @@ Instruction *InstCombiner::visitOr(BinaryOperator &I) {
if (match(Op0, m_Not(m_Value(A)), *Context)) { // ~A | Op1
if (A == Op1) // ~A | A == -1
- return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
} else {
A = 0;
}
// Note, A is still live here!
if (match(Op1, m_Not(m_Value(B)), *Context)) { // Op0 | ~B
if (Op0 == B)
- return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
// (~A | ~B) == (~(A & B)) - De Morgan's Law
if (A && isOnlyUse(Op0) && isOnlyUse(Op1)) {
@@ -5019,14 +5019,14 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
if (isa<UndefValue>(Op0))
// Handle undef ^ undef -> 0 special case. This is a common
// idiom (misuse).
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
return ReplaceInstUsesWith(I, Op1); // X ^ undef -> undef
}
// xor X, X = 0, even if X is nested in a sequence of Xor's.
if (Instruction *Result = AssociativeOpt(I, XorSelf(Op1), Context)) {
assert(Result == &I && "AssociativeOpt didn't work?"); Result=Result;
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
}
// See if we can simplify any instructions used by the instruction whose sole
@@ -5148,11 +5148,11 @@ Instruction *InstCombiner::visitXor(BinaryOperator &I) {
if (Value *X = dyn_castNotVal(Op0, Context)) // ~A ^ A == -1
if (X == Op1)
- return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
if (Value *X = dyn_castNotVal(Op1, Context)) // A ^ ~A == -1
if (X == Op0)
- return ReplaceInstUsesWith(I, Context->getAllOnesValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getAllOnesValue(I.getType()));
BinaryOperator *Op1I = dyn_cast<BinaryOperator>(Op1);
@@ -5378,7 +5378,7 @@ static Value *EmitGEPOffset(User *GEP, Instruction &I, InstCombiner &IC) {
gep_type_iterator GTI = gep_type_begin(GEP);
const Type *IntPtrTy = TD.getIntPtrType();
LLVMContext *Context = IC.getContext();
- Value *Result = Context->getNullValue(IntPtrTy);
+ Value *Result = Constant::getNullValue(IntPtrTy);
// Build a mask for high order bits.
unsigned IntPtrWidth = TD.getPointerSizeInBits();
@@ -5578,7 +5578,7 @@ Instruction *InstCombiner::FoldGEPICmp(GEPOperator *GEPLHS, Value *RHS,
if (Offset == 0)
Offset = EmitGEPOffset(GEPLHS, I, *this);
return new ICmpInst(*Context, ICmpInst::getSignedPredicate(Cond), Offset,
- Context->getNullValue(Offset->getType()));
+ Constant::getNullValue(Offset->getType()));
} else if (GEPOperator *GEPRHS = dyn_cast<GEPOperator>(RHS)) {
// If the base pointers are different, but the indices are the same, just
// compare the base pointer.
@@ -5892,7 +5892,7 @@ Instruction *InstCombiner::visitFCmpInst(FCmpInst &I) {
case FCmpInst::FCMP_UNE: // True if unordered or not equal
// Canonicalize these to be 'fcmp uno %X, 0.0'.
I.setPredicate(FCmpInst::FCMP_UNO);
- I.setOperand(1, Context->getNullValue(Op0->getType()));
+ I.setOperand(1, Constant::getNullValue(Op0->getType()));
return &I;
case FCmpInst::FCMP_ORD: // True if ordered (no nans)
@@ -5901,7 +5901,7 @@ Instruction *InstCombiner::visitFCmpInst(FCmpInst &I) {
case FCmpInst::FCMP_OLE: // True if ordered and less than or equal
// Canonicalize these to be 'fcmp ord %X, 0.0'.
I.setPredicate(FCmpInst::FCMP_ORD);
- I.setOperand(1, Context->getNullValue(Op0->getType()));
+ I.setOperand(1, Constant::getNullValue(Op0->getType()));
return &I;
}
}
@@ -6165,7 +6165,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
// (x <u 2147483648) -> (x >s -1) -> true if sign bit clear
if (CI->isMinValue(true))
return new ICmpInst(*Context, ICmpInst::ICMP_SGT, Op0,
- Context->getAllOnesValue(Op0->getType()));
+ Constant::getAllOnesValue(Op0->getType()));
}
break;
case ICmpInst::ICMP_UGT:
@@ -6184,7 +6184,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
// (x >u 2147483647) -> (x <s 0) -> true if sign bit set
if (CI->isMaxValue(true))
return new ICmpInst(*Context, ICmpInst::ICMP_SLT, Op0,
- Context->getNullValue(Op0->getType()));
+ Constant::getNullValue(Op0->getType()));
}
break;
case ICmpInst::ICMP_SLT:
@@ -6292,7 +6292,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
}
if (isAllZeros)
return new ICmpInst(*Context, I.getPredicate(), LHSI->getOperand(0),
- Context->getNullValue(LHSI->getOperand(0)->getType()));
+ Constant::getNullValue(LHSI->getOperand(0)->getType()));
}
break;
@@ -6472,7 +6472,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
if (A == Op1 || B == Op1) { // (A^B) == A -> B == 0
Value *OtherVal = A == Op1 ? B : A;
return new ICmpInst(*Context, I.getPredicate(), OtherVal,
- Context->getNullValue(A->getType()));
+ Constant::getNullValue(A->getType()));
}
if (match(Op1, m_Xor(m_Value(C), m_Value(D)), *Context)) {
@@ -6500,18 +6500,18 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
// A == (A^B) -> B == 0
Value *OtherVal = A == Op0 ? B : A;
return new ICmpInst(*Context, I.getPredicate(), OtherVal,
- Context->getNullValue(A->getType()));
+ Constant::getNullValue(A->getType()));
}
// (A-B) == A -> B == 0
if (match(Op0, m_Sub(m_Specific(Op1), m_Value(B)), *Context))
return new ICmpInst(*Context, I.getPredicate(), B,
- Context->getNullValue(B->getType()));
+ Constant::getNullValue(B->getType()));
// A == (A-B) -> B == 0
if (match(Op1, m_Sub(m_Specific(Op0), m_Value(B)), *Context))
return new ICmpInst(*Context, I.getPredicate(), B,
- Context->getNullValue(B->getType()));
+ Constant::getNullValue(B->getType()));
// (X&Z) == (Y&Z) -> (X^Y) & Z == 0
if (Op0->hasOneUse() && Op1->hasOneUse() &&
@@ -6533,7 +6533,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
Op1 = InsertNewInstBefore(BinaryOperator::CreateXor(X, Y, "tmp"), I);
Op1 = InsertNewInstBefore(BinaryOperator::CreateAnd(Op1, Z, "tmp"), I);
I.setOperand(0, Op1);
- I.setOperand(1, Context->getNullValue(Op1->getType()));
+ I.setOperand(1, Constant::getNullValue(Op1->getType()));
return &I;
}
}
@@ -6956,7 +6956,7 @@ Instruction *InstCombiner::visitICmpInstWithInstAndIntCst(ICmpInst &ICI,
return new ICmpInst(*Context,
TrueIfSigned ? ICmpInst::ICMP_NE : ICmpInst::ICMP_EQ,
- And, Context->getNullValue(And->getType()));
+ And, Constant::getNullValue(And->getType()));
}
break;
}
@@ -7079,7 +7079,7 @@ Instruction *InstCombiner::visitICmpInstWithInstAndIntCst(ICmpInst &ICI,
BO->getName());
InsertNewInstBefore(NewRem, ICI);
return new ICmpInst(*Context, ICI.getPredicate(), NewRem,
- Context->getNullValue(BO->getType()));
+ Constant::getNullValue(BO->getType()));
}
}
break;
@@ -7146,12 +7146,12 @@ Instruction *InstCombiner::visitICmpInstWithInstAndIntCst(ICmpInst &ICI,
if (RHS == BOC && RHSV.isPowerOf2())
return new ICmpInst(*Context, isICMP_NE ? ICmpInst::ICMP_EQ :
ICmpInst::ICMP_NE, LHSI,
- Context->getNullValue(RHS->getType()));
+ Constant::getNullValue(RHS->getType()));
// Replace (and X, (1 << size(X)-1) != 0) with x s< 0
if (BOC->getValue().isSignBit()) {
Value *X = BO->getOperand(0);
- Constant *Zero = Context->getNullValue(X->getType());
+ Constant *Zero = Constant::getNullValue(X->getType());
ICmpInst::Predicate pred = isICMP_NE ?
ICmpInst::ICMP_SLT : ICmpInst::ICMP_SGE;
return new ICmpInst(*Context, pred, X, Zero);
@@ -7295,7 +7295,7 @@ Instruction *InstCombiner::visitICmpInstWithCastAndCast(ICmpInst &ICI) {
if (isSignedExt) {
// We're performing an unsigned comp with a sign extended value.
// This is true if the input is >= 0. [aka >s -1]
- Constant *NegOne = Context->getAllOnesValue(SrcTy);
+ Constant *NegOne = Constant::getAllOnesValue(SrcTy);
Result = InsertNewInstBefore(new ICmpInst(*Context, ICmpInst::ICMP_SGT,
LHSCIOp, NegOne, ICI.getName()), ICI);
} else {
@@ -7355,21 +7355,21 @@ Instruction *InstCombiner::commonShiftTransforms(BinaryOperator &I) {
// shl X, 0 == X and shr X, 0 == X
// shl 0, X == 0 and shr 0, X == 0
- if (Op1 == Context->getNullValue(Op1->getType()) ||
- Op0 == Context->getNullValue(Op0->getType()))
+ if (Op1 == Constant::getNullValue(Op1->getType()) ||
+ Op0 == Constant::getNullValue(Op0->getType()))
return ReplaceInstUsesWith(I, Op0);
if (isa<UndefValue>(Op0)) {
if (I.getOpcode() == Instruction::AShr) // undef >>s X -> undef
return ReplaceInstUsesWith(I, Op0);
else // undef << X -> 0, undef >>u X -> 0
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
}
if (isa<UndefValue>(Op1)) {
if (I.getOpcode() == Instruction::AShr) // X >>s undef -> X
return ReplaceInstUsesWith(I, Op0);
else // X << undef, X >>u undef -> 0
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
}
// See if we can fold away this shift.
@@ -7401,7 +7401,7 @@ Instruction *InstCombiner::FoldShiftByConstant(Value *Op0, ConstantInt *Op1,
//
if (Op1->uge(TypeBits)) {
if (I.getOpcode() != Instruction::AShr)
- return ReplaceInstUsesWith(I, Context->getNullValue(Op0->getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(Op0->getType()));
else {
I.setOperand(1, ConstantInt::get(I.getType(), TypeBits-1));
return &I;
@@ -7629,7 +7629,7 @@ Instruction *InstCombiner::FoldShiftByConstant(Value *Op0, ConstantInt *Op1,
// saturates.
if (AmtSum >= TypeBits) {
if (I.getOpcode() != Instruction::AShr)
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
AmtSum = TypeBits-1; // Saturate to 31 for i32 ashr.
}
@@ -7638,7 +7638,7 @@ Instruction *InstCombiner::FoldShiftByConstant(Value *Op0, ConstantInt *Op1,
} else if (ShiftOp->getOpcode() == Instruction::LShr &&
I.getOpcode() == Instruction::AShr) {
if (AmtSum >= TypeBits)
- return ReplaceInstUsesWith(I, Context->getNullValue(I.getType()));
+ return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType()));
// ((X >>u C1) >>s C2) -> (X >>u (C1+C2)) since C1 != 0.
return BinaryOperator::CreateLShr(X, ConstantInt::get(Ty, AmtSum));
@@ -8477,7 +8477,7 @@ Instruction *InstCombiner::visitTrunc(TruncInst &CI) {
if (DestBitWidth == 1) {
Constant *One = ConstantInt::get(Src->getType(), 1);
Src = InsertNewInstBefore(BinaryOperator::CreateAnd(Src, One, "tmp"), CI);
- Value *Zero = Context->getNullValue(Src->getType());
+ Value *Zero = Constant::getNullValue(Src->getType());
return new ICmpInst(*Context, ICmpInst::ICMP_NE, Src, Zero);
}
@@ -8492,7 +8492,7 @@ Instruction *InstCombiner::visitTrunc(TruncInst &CI) {
APInt Mask(APInt::getLowBitsSet(SrcBitWidth, ShAmt).shl(DestBitWidth));
if (MaskedValueIsZero(ShiftOp, Mask)) {
if (ShAmt >= DestBitWidth) // All zeros.
- return ReplaceInstUsesWith(CI, Context->getNullValue(Ty));
+ return ReplaceInstUsesWith(CI, Constant::getNullValue(Ty));
// Okay, we can shrink this. Truncate the input, then return a new
// shift.
@@ -8699,8 +8699,8 @@ Instruction *InstCombiner::visitSExt(SExtInst &CI) {
// Canonicalize sign-extend from i1 to a select.
if (Src->getType() == Type::Int1Ty)
return SelectInst::Create(Src,
- Context->getAllOnesValue(CI.getType()),
- Context->getNullValue(CI.getType()));
+ Constant::getAllOnesValue(CI.getType()),
+ Constant::getNullValue(CI.getType()));
// See if the value being truncated is already sign extended. If so, just
// eliminate the trunc/sext pair.
@@ -8970,7 +8970,7 @@ Instruction *InstCombiner::visitBitCast(BitCastInst &CI) {
// If the source and destination are pointers, and this cast is equivalent
// to a getelementptr X, 0, 0, 0... turn it into the appropriate gep.
// This can enhance SROA and other transforms that want type-safe pointers.
- Constant *ZeroUInt = Context->getNullValue(Type::Int32Ty);
+ Constant *ZeroUInt = Constant::getNullValue(Type::Int32Ty);
unsigned NumZeros = 0;
while (SrcElTy != DstElTy &&
isa<CompositeType>(SrcElTy) && !isa<PointerType>(SrcElTy) &&
@@ -8996,7 +8996,7 @@ Instruction *InstCombiner::visitBitCast(BitCastInst &CI) {
Value *Elem = InsertCastBefore(Instruction::BitCast, Src,
DestVTy->getElementType(), CI);
return InsertElementInst::Create(UndefValue::get(DestTy), Elem,
- Context->getNullValue(Type::Int32Ty));
+ Constant::getNullValue(Type::Int32Ty));
}
// FIXME: Canonicalize bitcast(insertelement) -> insertelement(bitcast)
}
@@ -9006,7 +9006,7 @@ Instruction *InstCombiner::visitBitCast(BitCastInst &CI) {
if (SrcVTy->getNumElements() == 1) {
if (!isa<VectorType>(DestTy)) {
Instruction *Elem =
- ExtractElementInst::Create(Src, Context->getNullValue(Type::Int32Ty));
+ ExtractElementInst::Create(Src, Constant::getNullValue(Type::Int32Ty));
InsertNewInstBefore(Elem, CI);
return CastInst::Create(Instruction::BitCast, Elem, DestTy);
}
@@ -9086,9 +9086,9 @@ static Constant *GetSelectFoldableConstant(Instruction *I,
case Instruction::Shl:
case Instruction::LShr:
case Instruction::AShr:
- return Context->getNullValue(I->getType());
+ return Constant::getNullValue(I->getType());
case Instruction::And:
- return Context->getAllOnesValue(I->getType());
+ return Constant::getAllOnesValue(I->getType());
case Instruction::Mul:
return ConstantInt::get(I->getType(), 1);
}
@@ -9743,7 +9743,7 @@ Instruction *InstCombiner::SimplifyMemTransfer(MemIntrinsic *MI) {
InsertNewInstBefore(new StoreInst(L, Dest, false, DstAlign), *MI);
// Set the size of the copy to 0, it will be deleted on the next iteration.
- MI->setOperand(3, Context->getNullValue(MemOpLength->getType()));
+ MI->setOperand(3, Constant::getNullValue(MemOpLength->getType()));
return MI;
}
@@ -9782,7 +9782,7 @@ Instruction *InstCombiner::SimplifyMemSet(MemSetInst *MI) {
Dest, false, Alignment), *MI);
// Set the size of the copy to 0, it will be deleted on the next iteration.
- MI->setLength(Context->getNullValue(LenC->getType()));
+ MI->setLength(Constant::getNullValue(LenC->getType()));
return MI;
}
@@ -10259,7 +10259,7 @@ bool InstCombiner::transformConstExprCastCall(CallSite CS) {
// If the function takes more arguments than the call was taking, add them
// now...
for (unsigned i = NumCommonArgs; i != FT->getNumParams(); ++i)
- Args.push_back(Context->getNullValue(FT->getParamType(i)));
+ Args.push_back(Constant::getNullValue(FT->getParamType(i)));
// If we are removing arguments to the function, emit an obnoxious warning...
if (FT->getNumParams() < NumActualArgs) {
@@ -11092,9 +11092,9 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) {
// With: T = long A+B; gep %P, T, ...
//
Value *Sum, *SO1 = SrcGEPOperands.back(), *GO1 = GEP.getOperand(1);
- if (SO1 == Context->getNullValue(SO1->getType())) {
+ if (SO1 == Constant::getNullValue(SO1->getType())) {
Sum = GO1;
- } else if (GO1 == Context->getNullValue(GO1->getType())) {
+ } else if (GO1 == Constant::getNullValue(GO1->getType())) {
Sum = SO1;
} else {
// If they aren't the same type, convert both to an integer of the
@@ -11227,7 +11227,7 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) {
TD->getTypeAllocSize(cast<ArrayType>(SrcElTy)->getElementType()) ==
TD->getTypeAllocSize(ResElTy)) {
Value *Idx[2];
- Idx[0] = Context->getNullValue(Type::Int32Ty);
+ Idx[0] = Constant::getNullValue(Type::Int32Ty);
Idx[1] = GEP.getOperand(1);
GetElementPtrInst *NewGEP =
GetElementPtrInst::Create(X, Idx, Idx + 2, GEP.getName());
@@ -11291,7 +11291,7 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) {
// Insert the new GEP instruction.
Value *Idx[2];
- Idx[0] = Context->getNullValue(Type::Int32Ty);
+ Idx[0] = Constant::getNullValue(Type::Int32Ty);
Idx[1] = NewIdx;
Instruction *NewGEP =
GetElementPtrInst::Create(X, Idx, Idx + 2, GEP.getName());
@@ -11388,7 +11388,7 @@ Instruction *InstCombiner::visitAllocationInst(AllocationInst &AI) {
// Now that I is pointing to the first non-allocation-inst in the block,
// insert our getelementptr instruction...
//
- Value *NullIdx = Context->getNullValue(Type::Int32Ty);
+ Value *NullIdx = Constant::getNullValue(Type::Int32Ty);
Value *Idx[2];
Idx[0] = NullIdx;
Idx[1] = NullIdx;
@@ -11400,7 +11400,7 @@ Instruction *InstCombiner::visitAllocationInst(AllocationInst &AI) {
// allocation.
return ReplaceInstUsesWith(AI, V);
} else if (isa<UndefValue>(AI.getArraySize())) {
- return ReplaceInstUsesWith(AI, Context->getNullValue(AI.getType()));
+ return ReplaceInstUsesWith(AI, Constant::getNullValue(AI.getType()));
}
}
@@ -11409,7 +11409,7 @@ Instruction *InstCombiner::visitAllocationInst(AllocationInst &AI) {
// Note that we only do this for alloca's, because malloc should allocate
// and return a unique pointer, even for a zero byte allocation.
if (TD->getTypeAllocSize(AI.getAllocatedType()) == 0)
- return ReplaceInstUsesWith(AI, Context->getNullValue(AI.getType()));
+ return ReplaceInstUsesWith(AI, Constant::getNullValue(AI.getType()));
// If the alignment is 0 (unspecified), assign it the preferred alignment.
if (AI.getAlignment() == 0)
@@ -11521,7 +11521,7 @@ static Instruction *InstCombineLoadCast(InstCombiner &IC, LoadInst &LI,
if (Constant *CSrc = dyn_cast<Constant>(CastOp))
if (ASrcTy->getNumElements() != 0) {
Value *Idxs[2];
- Idxs[0] = Idxs[1] = Context->getNullValue(Type::Int32Ty);
+ Idxs[0] = Idxs[1] = Constant::getNullValue(Type::Int32Ty);
CastOp = ConstantExpr::getGetElementPtr(CSrc, Idxs, 2);
SrcTy = cast<PointerType>(CastOp->getType());
SrcPTy = SrcTy->getElementType();
@@ -11588,7 +11588,7 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
// an unreachable instruction directly because we cannot modify the
// CFG.
new StoreInst(UndefValue::get(LI.getType()),
- Context->getNullValue(Op->getType()), &LI);
+ Constant::getNullValue(Op->getType()), &LI);
return ReplaceInstUsesWith(LI, UndefValue::get(LI.getType()));
}
}
@@ -11602,7 +11602,7 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
// this code is not reachable. We do this instead of inserting an
// unreachable instruction directly because we cannot modify the CFG.
new StoreInst(UndefValue::get(LI.getType()),
- Context->getNullValue(Op->getType()), &LI);
+ Constant::getNullValue(Op->getType()), &LI);
return ReplaceInstUsesWith(LI, UndefValue::get(LI.getType()));
}
@@ -11626,7 +11626,7 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
// an unreachable instruction directly because we cannot modify the
// CFG.
new StoreInst(UndefValue::get(LI.getType()),
- Context->getNullValue(Op->getType()), &LI);
+ Constant::getNullValue(Op->getType()), &LI);
return ReplaceInstUsesWith(LI, UndefValue::get(LI.getType()));
}
@@ -11642,7 +11642,7 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(Op->getUnderlyingObject())){
if (GV->isConstant() && GV->hasDefinitiveInitializer()) {
if (GV->getInitializer()->isNullValue())
- return ReplaceInstUsesWith(LI, Context->getNullValue(LI.getType()));
+ return ReplaceInstUsesWith(LI, Constant::getNullValue(LI.getType()));
else if (isa<UndefValue>(GV->getInitializer()))
return ReplaceInstUsesWith(LI, UndefValue::get(LI.getType()));
}
@@ -11694,7 +11694,6 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
static Instruction *InstCombineStoreToCast(InstCombiner &IC, StoreInst &SI) {
User *CI = cast<User>(SI.getOperand(1));
Value *CastOp = CI->getOperand(0);
- LLVMContext *Context = IC.getContext();
const Type *DestPTy = cast<PointerType>(CI->getType())->getElementType();
const PointerType *SrcTy = dyn_cast<PointerType>(CastOp->getType());
@@ -11716,7 +11715,7 @@ static Instruction *InstCombineStoreToCast(InstCombiner &IC, StoreInst &SI) {
// constants.
if (isa<ArrayType>(SrcPTy) || isa<StructType>(SrcPTy)) {
// Index through pointer.
- Constant *Zero = Context->getNullValue(Type::Int32Ty);
+ Constant *Zero = Constant::getNullValue(Type::Int32Ty);
NewGEPIndices.push_back(Zero);
while (1) {
@@ -12190,7 +12189,7 @@ Instruction *InstCombiner::visitExtractValueInst(ExtractValueInst &EV) {
return ReplaceInstUsesWith(EV, UndefValue::get(EV.getType()));
if (isa<ConstantAggregateZero>(C))
- return ReplaceInstUsesWith(EV, Context->getNullValue(EV.getType()));
+ return ReplaceInstUsesWith(EV, Constant::getNullValue(EV.getType()));
if (isa<ConstantArray>(C) || isa<ConstantStruct>(C)) {
// Extract the element indexed by the first index out of the constant
@@ -12337,7 +12336,7 @@ static Value *FindScalarElement(Value *V, unsigned EltNo,
if (isa<UndefValue>(V))
return UndefValue::get(PTy->getElementType());
else if (isa<ConstantAggregateZero>(V))
- return Context->getNullValue(PTy->getElementType());
+ return Constant::getNullValue(PTy->getElementType());
else if (ConstantVector *CP = dyn_cast<ConstantVector>(V))
return CP->getOperand(EltNo);
else if (InsertElementInst *III = dyn_cast<InsertElementInst>(V)) {
@@ -12377,7 +12376,7 @@ Instruction *InstCombiner::visitExtractElementInst(ExtractElementInst &EI) {
// If vector val is constant 0, replace extract with scalar 0.
if (isa<ConstantAggregateZero>(EI.getOperand(0)))
- return ReplaceInstUsesWith(EI, Context->getNullValue(EI.getType()));
+ return ReplaceInstUsesWith(EI, Constant::getNullValue(EI.getType()));
if (ConstantVector *C = dyn_cast<ConstantVector>(EI.getOperand(0))) {
// If vector val is constant with all elements the same, replace EI with
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-29 22:13:37 +0000