if (C->isAllOnesValue() && !DestTy->isX86_MMXTy())
return Constant::getAllOnesValue(DestTy);
+ // Handle a vector->integer cast.
+ if (IntegerType *IT = dyn_cast<IntegerType>(DestTy)) {
+ ConstantDataVector *CDV = dyn_cast<ConstantDataVector>(C);
+ if (CDV == 0)
+ return ConstantExpr::getBitCast(C, DestTy);
+
+ unsigned NumSrcElts = CDV->getType()->getNumElements();
+
+ Type *SrcEltTy = CDV->getType()->getElementType();
+
+ // If the vector is a vector of floating point, convert it to vector of int
+ // to simplify things.
+ if (SrcEltTy->isFloatingPointTy()) {
+ unsigned FPWidth = SrcEltTy->getPrimitiveSizeInBits();
+ Type *SrcIVTy =
+ VectorType::get(IntegerType::get(C->getContext(), FPWidth), NumSrcElts);
+ // Ask VMCore to do the conversion now that #elts line up.
+ C = ConstantExpr::getBitCast(C, SrcIVTy);
+ CDV = cast<ConstantDataVector>(C);
+ }
+
+ // Now that we know that the input value is a vector of integers, just shift
+ // and insert them into our result.
+ unsigned BitShift = TD.getTypeAllocSizeInBits(SrcEltTy);
+ APInt Result(IT->getBitWidth(), 0);
+ for (unsigned i = 0; i != NumSrcElts; ++i) {
+ Result <<= BitShift;
+ if (TD.isLittleEndian())
+ Result |= CDV->getElementAsInteger(NumSrcElts-i-1);
+ else
+ Result |= CDV->getElementAsInteger(i);
+ }
+
+ return ConstantInt::get(IT, Result);
+ }
+
// The code below only handles casts to vectors currently.
VectorType *DestVTy = dyn_cast<VectorType>(DestTy);
if (DestVTy == 0)
}
// If this is a bitcast from constant vector -> vector, fold it.
- ConstantVector *CV = dyn_cast<ConstantVector>(C);
- if (CV == 0)
+ if (!isa<ConstantDataVector>(C) && !isa<ConstantVector>(C))
return ConstantExpr::getBitCast(C, DestTy);
// If the element types match, VMCore can fold it.
unsigned NumDstElt = DestVTy->getNumElements();
- unsigned NumSrcElt = CV->getNumOperands();
+ unsigned NumSrcElt = C->getType()->getVectorNumElements();
if (NumDstElt == NumSrcElt)
return ConstantExpr::getBitCast(C, DestTy);
- Type *SrcEltTy = CV->getType()->getElementType();
+ Type *SrcEltTy = C->getType()->getVectorElementType();
Type *DstEltTy = DestVTy->getElementType();
// Otherwise, we're changing the number of elements in a vector, which
VectorType::get(IntegerType::get(C->getContext(), FPWidth), NumDstElt);
// Recursively handle this integer conversion, if possible.
C = FoldBitCast(C, DestIVTy, TD);
- if (!C) return ConstantExpr::getBitCast(C, DestTy);
// Finally, VMCore can handle this now that #elts line up.
return ConstantExpr::getBitCast(C, DestTy);
VectorType::get(IntegerType::get(C->getContext(), FPWidth), NumSrcElt);
// Ask VMCore to do the conversion now that #elts line up.
C = ConstantExpr::getBitCast(C, SrcIVTy);
- CV = dyn_cast<ConstantVector>(C);
- if (!CV) // If VMCore wasn't able to fold it, bail out.
+ // If VMCore wasn't able to fold it, bail out.
+ if (!isa<ConstantVector>(C) && // FIXME: Remove ConstantVector.
+ !isa<ConstantDataVector>(C))
return C;
}
Constant *Elt = Zero;
unsigned ShiftAmt = isLittleEndian ? 0 : SrcBitSize*(Ratio-1);
for (unsigned j = 0; j != Ratio; ++j) {
- Constant *Src = dyn_cast<ConstantInt>(CV->getOperand(SrcElt++));
+ Constant *Src =dyn_cast<ConstantInt>(C->getAggregateElement(SrcElt++));
if (!Src) // Reject constantexpr elements.
return ConstantExpr::getBitCast(C, DestTy);
}
Result.push_back(Elt);
}
- } else {
- // Handle: bitcast (<2 x i64> <i64 0, i64 1> to <4 x i32>)
- unsigned Ratio = NumDstElt/NumSrcElt;
- unsigned DstBitSize = DstEltTy->getPrimitiveSizeInBits();
+ return ConstantVector::get(Result);
+ }
+
+ // Handle: bitcast (<2 x i64> <i64 0, i64 1> to <4 x i32>)
+ unsigned Ratio = NumDstElt/NumSrcElt;
+ unsigned DstBitSize = DstEltTy->getPrimitiveSizeInBits();
+
+ // Loop over each source value, expanding into multiple results.
+ for (unsigned i = 0; i != NumSrcElt; ++i) {
+ Constant *Src = dyn_cast<ConstantInt>(C->getAggregateElement(i));
+ if (!Src) // Reject constantexpr elements.
+ return ConstantExpr::getBitCast(C, DestTy);
- // Loop over each source value, expanding into multiple results.
- for (unsigned i = 0; i != NumSrcElt; ++i) {
- Constant *Src = dyn_cast<ConstantInt>(CV->getOperand(i));
- if (!Src) // Reject constantexpr elements.
- return ConstantExpr::getBitCast(C, DestTy);
+ unsigned ShiftAmt = isLittleEndian ? 0 : DstBitSize*(Ratio-1);
+ for (unsigned j = 0; j != Ratio; ++j) {
+ // Shift the piece of the value into the right place, depending on
+ // endianness.
+ Constant *Elt = ConstantExpr::getLShr(Src,
+ ConstantInt::get(Src->getType(), ShiftAmt));
+ ShiftAmt += isLittleEndian ? DstBitSize : -DstBitSize;
- unsigned ShiftAmt = isLittleEndian ? 0 : DstBitSize*(Ratio-1);
- for (unsigned j = 0; j != Ratio; ++j) {
- // Shift the piece of the value into the right place, depending on
- // endianness.
- Constant *Elt = ConstantExpr::getLShr(Src,
- ConstantInt::get(Src->getType(), ShiftAmt));
- ShiftAmt += isLittleEndian ? DstBitSize : -DstBitSize;
-
- // Truncate and remember this piece.
- Result.push_back(ConstantExpr::getTrunc(Elt, DstEltTy));
- }
+ // Truncate and remember this piece.
+ Result.push_back(ConstantExpr::getTrunc(Elt, DstEltTy));
}
}
}
return false;
}
-
+
if (ConstantStruct *CS = dyn_cast<ConstantStruct>(C)) {
const StructLayout *SL = TD.getStructLayout(CS->getType());
unsigned Index = SL->getElementContainingOffset(ByteOffset);
// not reached.
}
- if (ConstantArray *CA = dyn_cast<ConstantArray>(C)) {
- uint64_t EltSize = TD.getTypeAllocSize(CA->getType()->getElementType());
+ if (isa<ConstantArray>(C) || isa<ConstantVector>(C) ||
+ isa<ConstantDataSequential>(C)) {
+ Type *EltTy = cast<SequentialType>(C->getType())->getElementType();
+ uint64_t EltSize = TD.getTypeAllocSize(EltTy);
uint64_t Index = ByteOffset / EltSize;
uint64_t Offset = ByteOffset - Index * EltSize;
- for (; Index != CA->getType()->getNumElements(); ++Index) {
- if (!ReadDataFromGlobal(CA->getOperand(Index), Offset, CurPtr,
+ uint64_t NumElts;
+ if (ArrayType *AT = dyn_cast<ArrayType>(C->getType()))
+ NumElts = AT->getNumElements();
+ else
+ NumElts = cast<VectorType>(C->getType())->getNumElements();
+
+ for (; Index != NumElts; ++Index) {
+ if (!ReadDataFromGlobal(C->getAggregateElement(Index), Offset, CurPtr,
BytesLeft, TD))
return false;
if (EltSize >= BytesLeft)
}
return true;
}
-
- if (ConstantVector *CV = dyn_cast<ConstantVector>(C)) {
- uint64_t EltSize = TD.getTypeAllocSize(CV->getType()->getElementType());
- uint64_t Index = ByteOffset / EltSize;
- uint64_t Offset = ByteOffset - Index * EltSize;
- for (; Index != CV->getType()->getNumElements(); ++Index) {
- if (!ReadDataFromGlobal(CV->getOperand(Index), Offset, CurPtr,
- BytesLeft, TD))
- return false;
- if (EltSize >= BytesLeft)
- return true;
- Offset = 0;
- BytesLeft -= EltSize;
- CurPtr += EltSize;
- }
- return true;
- }
-
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
if (CE->getOpcode() == Instruction::IntToPtr &&
CE->getOperand(0)->getType() == TD.getIntPtrType(CE->getContext()))
- return ReadDataFromGlobal(CE->getOperand(0), ByteOffset, CurPtr,
- BytesLeft, TD);
+ return ReadDataFromGlobal(CE->getOperand(0), ByteOffset, CurPtr,
+ BytesLeft, TD);
}
// Otherwise, unknown initializer type.
// Instead of loading constant c string, use corresponding integer value
// directly if string length is small enough.
- std::string Str;
- if (TD && GetConstantStringInfo(CE, Str) && !Str.empty()) {
- unsigned StrLen = Str.length();
+ StringRef Str;
+ if (TD && getConstantStringInfo(CE, Str) && !Str.empty()) {
+ unsigned StrLen = Str.size();
Type *Ty = cast<PointerType>(CE->getType())->getElementType();
unsigned NumBits = Ty->getPrimitiveSizeInBits();
// Replace load with immediate integer if the result is an integer or fp
Type *ResultTy, const TargetData *TD,
const TargetLibraryInfo *TLI) {
Constant *Ptr = Ops[0];
- if (!TD || !cast<PointerType>(Ptr->getType())->getElementType()->isSized())
+ if (!TD || !cast<PointerType>(Ptr->getType())->getElementType()->isSized() ||
+ !Ptr->getType()->isPointerTy())
return 0;
Type *IntPtrTy = TD->getIntPtrType(Ptr->getContext());
switch (Opcode) {
default: return 0;
case Instruction::ICmp:
- case Instruction::FCmp: assert(0 && "Invalid for compares");
+ case Instruction::FCmp: llvm_unreachable("Invalid for compares");
case Instruction::Call:
if (Function *F = dyn_cast<Function>(Ops.back()))
if (canConstantFoldCallTo(F))
/// constant expression, or null if something is funny and we can't decide.
Constant *llvm::ConstantFoldLoadThroughGEPConstantExpr(Constant *C,
ConstantExpr *CE) {
- if (CE->getOperand(1) != Constant::getNullValue(CE->getOperand(1)->getType()))
+ if (!CE->getOperand(1)->isNullValue())
return 0; // Do not allow stepping over the value!
-
+
// Loop over all of the operands, tracking down which value we are
- // addressing...
- gep_type_iterator I = gep_type_begin(CE), E = gep_type_end(CE);
- for (++I; I != E; ++I)
- if (StructType *STy = dyn_cast<StructType>(*I)) {
- ConstantInt *CU = cast<ConstantInt>(I.getOperand());
- assert(CU->getZExtValue() < STy->getNumElements() &&
- "Struct index out of range!");
- unsigned El = (unsigned)CU->getZExtValue();
- if (ConstantStruct *CS = dyn_cast<ConstantStruct>(C)) {
- C = CS->getOperand(El);
- } else if (isa<ConstantAggregateZero>(C)) {
- C = Constant::getNullValue(STy->getElementType(El));
- } else if (isa<UndefValue>(C)) {
- C = UndefValue::get(STy->getElementType(El));
- } else {
- return 0;
- }
- } else if (ConstantInt *CI = dyn_cast<ConstantInt>(I.getOperand())) {
- if (ArrayType *ATy = dyn_cast<ArrayType>(*I)) {
- if (CI->getZExtValue() >= ATy->getNumElements())
- return 0;
- if (ConstantArray *CA = dyn_cast<ConstantArray>(C))
- C = CA->getOperand(CI->getZExtValue());
- else if (isa<ConstantAggregateZero>(C))
- C = Constant::getNullValue(ATy->getElementType());
- else if (isa<UndefValue>(C))
- C = UndefValue::get(ATy->getElementType());
- else
- return 0;
- } else if (VectorType *VTy = dyn_cast<VectorType>(*I)) {
- if (CI->getZExtValue() >= VTy->getNumElements())
- return 0;
- if (ConstantVector *CP = dyn_cast<ConstantVector>(C))
- C = CP->getOperand(CI->getZExtValue());
- else if (isa<ConstantAggregateZero>(C))
- C = Constant::getNullValue(VTy->getElementType());
- else if (isa<UndefValue>(C))
- C = UndefValue::get(VTy->getElementType());
- else
- return 0;
- } else {
- return 0;
- }
- } else {
- return 0;
- }
+ // addressing.
+ for (unsigned i = 2, e = CE->getNumOperands(); i != e; ++i) {
+ C = C->getAggregateElement(CE->getOperand(i));
+ if (C == 0) return 0;
+ }
+ return C;
+}
+
+/// ConstantFoldLoadThroughGEPIndices - Given a constant and getelementptr
+/// indices (with an *implied* zero pointer index that is not in the list),
+/// return the constant value being addressed by a virtual load, or null if
+/// something is funny and we can't decide.
+Constant *llvm::ConstantFoldLoadThroughGEPIndices(Constant *C,
+ ArrayRef<Constant*> Indices) {
+ // Loop over all of the operands, tracking down which value we are
+ // addressing.
+ for (unsigned i = 0, e = Indices.size(); i != e; ++i) {
+ C = C->getAggregateElement(Indices[i]);
+ if (C == 0) return 0;
+ }
return C;
}
llvm::canConstantFoldCallTo(const Function *F) {
switch (F->getIntrinsicID()) {
case Intrinsic::sqrt:
+ case Intrinsic::pow:
case Intrinsic::powi:
case Intrinsic::bswap:
case Intrinsic::ctpop:
if (Ty->isDoubleTy())
return ConstantFP::get(Ty->getContext(), APFloat(V));
llvm_unreachable("Can only constant fold float/double");
- return 0; // dummy return to suppress warning
}
static Constant *ConstantFoldBinaryFP(double (*NativeFP)(double, double),
if (Ty->isDoubleTy())
return ConstantFP::get(Ty->getContext(), APFloat(V));
llvm_unreachable("Can only constant fold float/double");
- return 0; // dummy return to suppress warning
}
/// ConstantFoldConvertToInt - Attempt to an SSE floating point to integer
/// available for the result. Returns null if the conversion cannot be
/// performed, otherwise returns the Constant value resulting from the
/// conversion.
-static Constant *ConstantFoldConvertToInt(ConstantFP *Op, bool roundTowardZero,
- Type *Ty) {
- assert(Op && "Called with NULL operand");
- APFloat Val(Op->getValueAPF());
-
+static Constant *ConstantFoldConvertToInt(const APFloat &Val,
+ bool roundTowardZero, Type *Ty) {
// All of these conversion intrinsics form an integer of at most 64bits.
unsigned ResultWidth = cast<IntegerType>(Ty)->getBitWidth();
assert(ResultWidth <= 64 &&
return ConstantInt::get(F->getContext(), Val.bitcastToAPInt());
}
+ if (!TLI)
+ return 0;
if (!Ty->isFloatTy() && !Ty->isDoubleTy())
return 0;
Op->getValueAPF().convertToDouble();
switch (Name[0]) {
case 'a':
- if (Name == "acos" && TLI && TLI->has(LibFunc::acos))
+ if (Name == "acos" && TLI->has(LibFunc::acos))
return ConstantFoldFP(acos, V, Ty);
- else if (Name == "asin" && TLI && TLI->has(LibFunc::asin))
+ else if (Name == "asin" && TLI->has(LibFunc::asin))
return ConstantFoldFP(asin, V, Ty);
- else if (Name == "atan" && TLI && TLI->has(LibFunc::atan))
+ else if (Name == "atan" && TLI->has(LibFunc::atan))
return ConstantFoldFP(atan, V, Ty);
break;
case 'c':
- if (Name == "ceil" && TLI && TLI->has(LibFunc::ceil))
+ if (Name == "ceil" && TLI->has(LibFunc::ceil))
return ConstantFoldFP(ceil, V, Ty);
- else if (Name == "cos" && TLI && TLI->has(LibFunc::cos))
+ else if (Name == "cos" && TLI->has(LibFunc::cos))
return ConstantFoldFP(cos, V, Ty);
- else if (Name == "cosh" && TLI && TLI->has(LibFunc::cosh))
+ else if (Name == "cosh" && TLI->has(LibFunc::cosh))
return ConstantFoldFP(cosh, V, Ty);
- else if (Name == "cosf" && TLI && TLI->has(LibFunc::cosf))
+ else if (Name == "cosf" && TLI->has(LibFunc::cosf))
return ConstantFoldFP(cos, V, Ty);
break;
case 'e':
- if (Name == "exp" && TLI && TLI->has(LibFunc::exp))
+ if (Name == "exp" && TLI->has(LibFunc::exp))
return ConstantFoldFP(exp, V, Ty);
- if (Name == "exp2" && TLI && TLI->has(LibFunc::exp2)) {
+ if (Name == "exp2" && TLI->has(LibFunc::exp2)) {
// Constant fold exp2(x) as pow(2,x) in case the host doesn't have a
// C99 library.
return ConstantFoldBinaryFP(pow, 2.0, V, Ty);
}
break;
case 'f':
- if (Name == "fabs" && TLI && TLI->has(LibFunc::fabs))
+ if (Name == "fabs" && TLI->has(LibFunc::fabs))
return ConstantFoldFP(fabs, V, Ty);
- else if (Name == "floor" && TLI && TLI->has(LibFunc::floor))
+ else if (Name == "floor" && TLI->has(LibFunc::floor))
return ConstantFoldFP(floor, V, Ty);
break;
case 'l':
- if (Name == "log" && V > 0 && TLI && TLI->has(LibFunc::log))
+ if (Name == "log" && V > 0 && TLI->has(LibFunc::log))
return ConstantFoldFP(log, V, Ty);
- else if (Name == "log10" && V > 0 && TLI && TLI->has(LibFunc::log10))
+ else if (Name == "log10" && V > 0 && TLI->has(LibFunc::log10))
return ConstantFoldFP(log10, V, Ty);
else if (F->getIntrinsicID() == Intrinsic::sqrt &&
(Ty->isFloatTy() || Ty->isDoubleTy())) {
}
break;
case 's':
- if (Name == "sin" && TLI && TLI->has(LibFunc::sin))
+ if (Name == "sin" && TLI->has(LibFunc::sin))
return ConstantFoldFP(sin, V, Ty);
- else if (Name == "sinh" && TLI && TLI->has(LibFunc::sinh))
+ else if (Name == "sinh" && TLI->has(LibFunc::sinh))
return ConstantFoldFP(sinh, V, Ty);
- else if (Name == "sqrt" && V >= 0 && TLI && TLI->has(LibFunc::sqrt))
+ else if (Name == "sqrt" && V >= 0 && TLI->has(LibFunc::sqrt))
return ConstantFoldFP(sqrt, V, Ty);
- else if (Name == "sqrtf" && V >= 0 && TLI && TLI->has(LibFunc::sqrtf))
+ else if (Name == "sqrtf" && V >= 0 && TLI->has(LibFunc::sqrtf))
return ConstantFoldFP(sqrt, V, Ty);
- else if (Name == "sinf" && TLI && TLI->has(LibFunc::sinf))
+ else if (Name == "sinf" && TLI->has(LibFunc::sinf))
return ConstantFoldFP(sin, V, Ty);
break;
case 't':
- if (Name == "tan" && TLI && TLI->has(LibFunc::tan))
+ if (Name == "tan" && TLI->has(LibFunc::tan))
return ConstantFoldFP(tan, V, Ty);
- else if (Name == "tanh" && TLI && TLI->has(LibFunc::tanh))
+ else if (Name == "tanh" && TLI->has(LibFunc::tanh))
return ConstantFoldFP(tanh, V, Ty);
break;
default:
return ConstantInt::get(F->getContext(), Op->getValue().byteSwap());
case Intrinsic::ctpop:
return ConstantInt::get(Ty, Op->getValue().countPopulation());
- case Intrinsic::cttz:
- return ConstantInt::get(Ty, Op->getValue().countTrailingZeros());
- case Intrinsic::ctlz:
- return ConstantInt::get(Ty, Op->getValue().countLeadingZeros());
case Intrinsic::convert_from_fp16: {
APFloat Val(Op->getValue());
}
}
- if (ConstantVector *Op = dyn_cast<ConstantVector>(Operands[0])) {
+ // Support ConstantVector in case we have an Undef in the top.
+ if (isa<ConstantVector>(Operands[0]) ||
+ isa<ConstantDataVector>(Operands[0])) {
+ Constant *Op = cast<Constant>(Operands[0]);
switch (F->getIntrinsicID()) {
default: break;
case Intrinsic::x86_sse_cvtss2si:
case Intrinsic::x86_sse_cvtss2si64:
case Intrinsic::x86_sse2_cvtsd2si:
case Intrinsic::x86_sse2_cvtsd2si64:
- if (ConstantFP *FPOp = dyn_cast<ConstantFP>(Op->getOperand(0)))
- return ConstantFoldConvertToInt(FPOp, /*roundTowardZero=*/false, Ty);
+ if (ConstantFP *FPOp =
+ dyn_cast_or_null<ConstantFP>(Op->getAggregateElement(0U)))
+ return ConstantFoldConvertToInt(FPOp->getValueAPF(),
+ /*roundTowardZero=*/false, Ty);
case Intrinsic::x86_sse_cvttss2si:
case Intrinsic::x86_sse_cvttss2si64:
case Intrinsic::x86_sse2_cvttsd2si:
case Intrinsic::x86_sse2_cvttsd2si64:
- if (ConstantFP *FPOp = dyn_cast<ConstantFP>(Op->getOperand(0)))
- return ConstantFoldConvertToInt(FPOp, /*roundTowardZero=*/true, Ty);
+ if (ConstantFP *FPOp =
+ dyn_cast_or_null<ConstantFP>(Op->getAggregateElement(0U)))
+ return ConstantFoldConvertToInt(FPOp->getValueAPF(),
+ /*roundTowardZero=*/true, Ty);
}
}
-
+
if (isa<UndefValue>(Operands[0])) {
if (F->getIntrinsicID() == Intrinsic::bswap)
return Operands[0];
if (ConstantFP *Op2 = dyn_cast<ConstantFP>(Operands[1])) {
if (Op2->getType() != Op1->getType())
return 0;
-
+
double Op2V = Ty->isFloatTy() ?
(double)Op2->getValueAPF().convertToFloat():
Op2->getValueAPF().convertToDouble();
- if (Name == "pow" && TLI && TLI->has(LibFunc::pow))
+ if (F->getIntrinsicID() == Intrinsic::pow) {
return ConstantFoldBinaryFP(pow, Op1V, Op2V, Ty);
- if (Name == "fmod" && TLI && TLI->has(LibFunc::fmod))
+ }
+ if (!TLI)
+ return 0;
+ if (Name == "pow" && TLI->has(LibFunc::pow))
+ return ConstantFoldBinaryFP(pow, Op1V, Op2V, Ty);
+ if (Name == "fmod" && TLI->has(LibFunc::fmod))
return ConstantFoldBinaryFP(fmod, Op1V, Op2V, Ty);
- if (Name == "atan2" && TLI && TLI->has(LibFunc::atan2))
+ if (Name == "atan2" && TLI->has(LibFunc::atan2))
return ConstantFoldBinaryFP(atan2, Op1V, Op2V, Ty);
} else if (ConstantInt *Op2C = dyn_cast<ConstantInt>(Operands[1])) {
if (F->getIntrinsicID() == Intrinsic::powi && Ty->isFloatTy())
return 0;
}
-
if (ConstantInt *Op1 = dyn_cast<ConstantInt>(Operands[0])) {
if (ConstantInt *Op2 = dyn_cast<ConstantInt>(Operands[1])) {
switch (F->getIntrinsicID()) {
APInt Res;
bool Overflow;
switch (F->getIntrinsicID()) {
- default: assert(0 && "Invalid case");
+ default: llvm_unreachable("Invalid case");
case Intrinsic::sadd_with_overflow:
Res = Op1->getValue().sadd_ov(Op2->getValue(), Overflow);
break;
};
return ConstantStruct::get(cast<StructType>(F->getReturnType()), Ops);
}
+ case Intrinsic::cttz:
+ // FIXME: This should check for Op2 == 1, and become unreachable if
+ // Op1 == 0.
+ return ConstantInt::get(Ty, Op1->getValue().countTrailingZeros());
+ case Intrinsic::ctlz:
+ // FIXME: This should check for Op2 == 1, and become unreachable if
+ // Op1 == 0.
+ return ConstantInt::get(Ty, Op1->getValue().countLeadingZeros());
}
}
projects / oota-llvm.git / blobdiff