}
// If we are left with a constant zero being added, strip it off.
- if (cast<SCEVConstant>(Ops[0])->getValue()->isNullValue()) {
+ if (cast<SCEVConstant>(Ops[0])->getValue()->isZero()) {
Ops.erase(Ops.begin());
--Idx;
}
if (cast<SCEVConstant>(Ops[0])->getValue()->equalsInt(1)) {
Ops.erase(Ops.begin());
--Idx;
- } else if (cast<SCEVConstant>(Ops[0])->getValue()->isNullValue()) {
+ } else if (cast<SCEVConstant>(Ops[0])->getValue()->isZero()) {
// If we have a multiply of zero, it will always be zero.
return Ops[0];
}
if (Operands.size() == 1) return Operands[0];
if (SCEVConstant *StepC = dyn_cast<SCEVConstant>(Operands.back()))
- if (StepC->getValue()->isNullValue()) {
+ if (StepC->getValue()->isZero()) {
Operands.pop_back();
return get(Operands, L); // { X,+,0 } --> X
}
// If the value is a constant
if (SCEVConstant *C = dyn_cast<SCEVConstant>(V)) {
// If the value is already zero, the branch will execute zero times.
- if (C->getValue()->isNullValue()) return C;
+ if (C->getValue()->isZero()) return C;
return UnknownValue; // Otherwise it will loop infinitely.
}
// should not accept a root of 2.
SCEVHandle Val = AddRec->evaluateAtIteration(R1);
if (SCEVConstant *EvalVal = dyn_cast<SCEVConstant>(Val))
- if (EvalVal->getValue()->isNullValue())
+ if (EvalVal->getValue()->isZero())
return R1; // We found a quadratic root!
}
}
// If the start is a non-zero constant, shift the range to simplify things.
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(getStart()))
- if (!SC->getValue()->isNullValue()) {
+ if (!SC->getValue()->isZero()) {
std::vector<SCEVHandle> Operands(op_begin(), op_end());
Operands[0] = SCEVUnknown::getIntegerSCEV(0, SC->getType());
SCEVHandle Shifted = SCEVAddRecExpr::get(Operands, getLoop());
// {X,+,F} --> X + {0,+,F}
if (!isa<SCEVConstant>(S->getStart()) ||
- !cast<SCEVConstant>(S->getStart())->getValue()->isNullValue()) {
+ !cast<SCEVConstant>(S->getStart())->getValue()->isZero()) {
Value *Start = expandInTy(S->getStart(), Ty);
std::vector<SCEVHandle> NewOps(S->op_begin(), S->op_end());
NewOps[0] = SCEVUnknown::getIntegerSCEV(0, Ty);
// instead of a select to synthesize the desired value.
bool IsOneZero = false;
if (ConstantInt *CI = dyn_cast<ConstantInt>(OtherVal))
- IsOneZero = InitVal->isNullValue() && CI->equalsInt(1);
+ IsOneZero = InitVal->isNullValue() && CI->isOne();
while (!GV->use_empty()) {
Instruction *UI = cast<Instruction>(GV->use_back());
for (uint64_t i = 0; i < len; ++i) {
if (ConstantInt* CI = dyn_cast<ConstantInt>(CA->getOperand(i))) {
// Check for the null terminator
- if (CI->isNullValue())
+ if (CI->isZero())
break; // we found end of string
else if (CI->getSExtValue() == chr) {
char_found = true;
// Check to make sure that the first operand of the GEP is an integer and
// has value 0 so that we are sure we're indexing into the initializer.
if (ConstantInt* op1 = dyn_cast<ConstantInt>(GEP->getOperand(1))) {
- if (!op1->isNullValue())
+ if (!op1->isZero())
return false;
} else
return false;
for (len = start_idx; len < max_elems; len++) {
if (ConstantInt *CI = dyn_cast<ConstantInt>(A->getOperand(len))) {
// Check for the null terminator
- if (CI->isNullValue())
+ if (CI->isZero())
break; // we found end of string
} else
return false; // This array isn't suitable, non-int initializer
// ultimate destination.
bool PHIGone = PN->getNumIncomingValues() == 2;
RevectorBlockTo(PN->getIncomingBlock(i-1),
- BI->getSuccessor(CB->isNullValue()));
+ BI->getSuccessor(CB->isZero()));
++NumBrThread;
// If there were two predecessors before this simplification, the PHI node
Constant *NCE = ConstantExpr::getGetElementPtr(CE->getOperand(0),
&CEIdxs[0],
CEIdxs.size());
- GetElementPtrInst *NGEPI =
- new GetElementPtrInst(NCE, Constant::getNullValue(Type::Int32Ty),
- NewAdd, GEPI->getName(), GEPI);
+ GetElementPtrInst *NGEPI = new GetElementPtrInst(
+ NCE, Constant::getNullValue(Type::Int32Ty), NewAdd,
+ GEPI->getName(), GEPI);
GEPI->replaceAllUsesWith(NGEPI);
GEPI->eraseFromParent();
GEPI = NGEPI;
// If there is no immediate value, skip the next part.
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(Imm))
- if (SC->getValue()->isNullValue())
+ if (SC->getValue()->isZero())
return Rewriter.expandCodeFor(NewBase, BaseInsertPt,
OperandValToReplace->getType());
SeparateSubExprs(SubExprs, SARE->getOperand(0));
}
} else if (!isa<SCEVConstant>(Expr) ||
- !cast<SCEVConstant>(Expr)->getValue()->isNullValue()) {
+ !cast<SCEVConstant>(Expr)->getValue()->isZero()) {
// Do not add zero.
SubExprs.push_back(Expr);
}
///
static bool isZero(SCEVHandle &V) {
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(V))
- return SC->getValue()->getZExtValue() == 0;
+ return SC->getValue()->isZero();
return false;
}
if (!TLI) return 0;
if (SCEVConstant *SC = dyn_cast<SCEVConstant>(Stride)) {
- int64_t SInt = SC->getValue()->getSExtValue();
- if (SInt == 1) return 0;
+ const APInt &SInt = SC->getValue()->getValue();
+ if (SInt == 1)
+ return 0;
for (TargetLowering::legal_am_scale_iterator
I = TLI->legal_am_scale_begin(), E = TLI->legal_am_scale_end();
I != E; ++I) {
- unsigned Scale = *I;
- if (unsigned(abs(SInt)) < Scale || (SInt % Scale) != 0)
+ APInt Scale(SInt.getBitWidth(), *I);
+ if (SInt.abs().ult(Scale) || SInt.srem(Scale) != 0)
continue;
std::map<SCEVHandle, IVsOfOneStride>::iterator SI =
- IVsByStride.find(SCEVUnknown::getIntegerSCEV(SInt/Scale, UIntPtrTy));
+ IVsByStride.find(SCEVUnknown::getIntegerSCEV(SInt.sdiv(Scale)));
if (SI == IVsByStride.end())
continue;
for (std::vector<IVExpr>::iterator II = SI->second.IVs.begin(),
// Only reuse previous IV if it would not require a type conversion.
if (isZero(II->Base) && II->Base->getType() == Ty) {
IV = *II;
- return Scale;
+ return Scale.getZExtValue();
}
}
}
// are reusing an IV, it has not been used to initialize the PHI node.
// Add it to the expression used to rewrite the uses.
if (!isa<ConstantInt>(CommonBaseV) ||
- !cast<ConstantInt>(CommonBaseV)->isNullValue())
+ !cast<ConstantInt>(CommonBaseV)->isZero())
RewriteExpr = SCEVAddExpr::get(RewriteExpr,
SCEVUnknown::get(CommonBaseV));
}
// Now that we know what we need to do, insert code before User for the
// immediate and any loop-variant expressions.
- if (!isa<ConstantInt>(BaseV) || !cast<ConstantInt>(BaseV)->isNullValue())
+ if (!isa<ConstantInt>(BaseV) || !cast<ConstantInt>(BaseV)->isZero())
// Add BaseV to the PHI value if needed.
RewriteExpr = SCEVAddExpr::get(RewriteExpr, SCEVUnknown::get(BaseV));
SCEVConstant *LHSC = dyn_cast<SCEVConstant>(LHS);
SCEVConstant *RHSC = dyn_cast<SCEVConstant>(RHS);
if (LHSC && RHSC) {
- int64_t LV = LHSC->getValue()->getSExtValue();
- int64_t RV = RHSC->getValue()->getSExtValue();
- uint64_t ALV = (LV < 0) ? -LV : LV;
- uint64_t ARV = (RV < 0) ? -RV : RV;
+ APInt LV(LHSC->getValue()->getValue());
+ APInt RV(RHSC->getValue()->getValue());
+ uint32_t MaxWidth = std::max(LV.getBitWidth(), RV.getBitWidth());
+ LV.sextOrTrunc(MaxWidth);
+ RV.sextOrTrunc(MaxWidth);
+ APInt ALV(LV.abs());
+ APInt ARV(RV.abs());
if (ALV == ARV)
- return LV > RV;
+ return LV.sgt(RV);
else
- return ALV < ARV;
+ return ALV.ult(ARV);
}
return (LHSC && !RHSC);
}
switch (Opcode) {
default: break;
case Instruction::And:
- if (CstVal->isNullValue()) { // ... & 0 -> 0
+ if (CstVal->isZero()) { // ... & 0 -> 0
++NumAnnihil;
return CstVal;
} else if (CstVal->isAllOnesValue()) { // ... & -1 -> ...
}
break;
case Instruction::Mul:
- if (CstVal->isNullValue()) { // ... * 0 -> 0
+ if (CstVal->isZero()) { // ... * 0 -> 0
++NumAnnihil;
return CstVal;
- } else if (cast<ConstantInt>(CstVal)->isUnitValue()) {
+ } else if (cast<ConstantInt>(CstVal)->isOne()) {
Ops.pop_back(); // ... * 1 -> ...
}
break;
// FALLTHROUGH!
case Instruction::Add:
case Instruction::Xor:
- if (CstVal->isNullValue()) // ... [|^+] 0 -> ...
+ if (CstVal->isZero()) // ... [|^+] 0 -> ...
Ops.pop_back();
break;
}
Constant *C2 = const_cast<Constant*>(V2);
R = dyn_cast<ConstantInt>(
ConstantExpr::getFCmp(FCmpInst::FCMP_OEQ, C1, C2));
- if (R && !R->isNullValue())
+ if (R && !R->isZero())
return FCmpInst::FCMP_OEQ;
R = dyn_cast<ConstantInt>(
ConstantExpr::getFCmp(FCmpInst::FCMP_OLT, C1, C2));
- if (R && !R->isNullValue())
+ if (R && !R->isZero())
return FCmpInst::FCMP_OLT;
R = dyn_cast<ConstantInt>(
ConstantExpr::getFCmp(FCmpInst::FCMP_OGT, C1, C2));
- if (R && !R->isNullValue())
+ if (R && !R->isZero())
return FCmpInst::FCMP_OGT;
// Nothing more we can do
Constant *C2 = const_cast<Constant*>(V2);
ICmpInst::Predicate pred = ICmpInst::ICMP_EQ;
R = dyn_cast<ConstantInt>(ConstantExpr::getICmp(pred, C1, C2));
- if (R && !R->isNullValue())
+ if (R && !R->isZero())
return pred;
pred = isSigned ? ICmpInst::ICMP_SLT : ICmpInst::ICMP_ULT;
R = dyn_cast<ConstantInt>(ConstantExpr::getICmp(pred, C1, C2));
- if (R && !R->isNullValue())
+ if (R && !R->isZero())
return pred;
pred = isSigned ? ICmpInst::ICMP_SGT : ICmpInst::ICMP_UGT;
R = dyn_cast<ConstantInt>(ConstantExpr::getICmp(pred, C1, C2));
- if (R && !R->isNullValue())
+ if (R && !R->isZero())
return pred;
// If we couldn't figure it out, bail.