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Rename hasNoUnsignedOverflow and hasNoSignedOverflow to hasNoUnsignedWrap 

and hasNoSignedWrap, for consistency with the nuw and nsw properties.

llvm-svn: 79539
This commit is contained in:
Dan Gohman 2009-08-20 17:11:38 +00:00
parent 2de532c132
commit 16f5415f5b
11 changed files with 41 additions and 41 deletions
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8
llvm/include/llvm/Analysis/ScalarEvolutionExpressions.h
View File

@ -426,12 +426,12 @@ namespace llvm {
return cast<SCEVAddRecExpr>(SE.getAddExpr(this, getStepRecurrence(SE)));
}
bool hasNoUnsignedOverflow() const { return SubclassData & (1 << 0); }
void setHasNoUnsignedOverflow(bool B) {
bool hasNoUnsignedWrap() const { return SubclassData & (1 << 0); }
void setHasNoUnsignedWrap(bool B) {
SubclassData = (SubclassData & ~(1 << 0)) | (B << 0);
}
bool hasNoSignedOverflow() const { return SubclassData & (1 << 1); }
void setHasNoSignedOverflow(bool B) {
bool hasNoSignedWrap() const { return SubclassData & (1 << 1); }
void setHasNoSignedWrap(bool B) {
SubclassData = (SubclassData & ~(1 << 1)) | (B << 1);
}

4
llvm/include/llvm/Bitcode/LLVMBitCodes.h
View File

@ -180,8 +180,8 @@ namespace bitc {
/// OverflowingBinaryOperatorOptionalFlags - Flags for serializing
/// OverflowingBinaryOperator's SubclassOptionalData contents.
enum OverflowingBinaryOperatorOptionalFlags {
OBO_NO_UNSIGNED_OVERFLOW = 0,
OBO_NO_SIGNED_OVERFLOW = 1
OBO_NO_UNSIGNED_WRAP = 0,
OBO_NO_SIGNED_WRAP = 1
};
/// SDivOperatorOptionalFlags - Flags for serializing SDivOperator's

6
llvm/include/llvm/InstrTypes.h
View File

@ -201,19 +201,19 @@ public:
static BinaryOperator *CreateNSWAdd(Value *V1, Value *V2,
const Twine &Name = "") {
BinaryOperator *BO = CreateAdd(V1, V2, Name);
cast<AddOperator>(BO)->setHasNoSignedOverflow(true);
cast<AddOperator>(BO)->setHasNoSignedWrap(true);
return BO;
}
static BinaryOperator *CreateNSWAdd(Value *V1, Value *V2,
const Twine &Name, BasicBlock *BB) {
BinaryOperator *BO = CreateAdd(V1, V2, Name, BB);
cast<AddOperator>(BO)->setHasNoSignedOverflow(true);
cast<AddOperator>(BO)->setHasNoSignedWrap(true);
return BO;
}
static BinaryOperator *CreateNSWAdd(Value *V1, Value *V2,
const Twine &Name, Instruction *I) {
BinaryOperator *BO = CreateAdd(V1, V2, Name, I);
cast<AddOperator>(BO)->setHasNoSignedOverflow(true);
cast<AddOperator>(BO)->setHasNoSignedWrap(true);
return BO;
}

16
llvm/include/llvm/Operator.h
View File

@ -69,21 +69,21 @@ public:
class OverflowingBinaryOperator : public Operator {
~OverflowingBinaryOperator(); // do not implement
public:
/// hasNoUnsignedOverflow - Test whether this operation is known to never
/// undergo unsigned overflow.
bool hasNoUnsignedOverflow() const {
/// hasNoUnsignedWrap - Test whether this operation is known to never
/// undergo unsigned overflow, aka the nuw property.
bool hasNoUnsignedWrap() const {
return SubclassOptionalData & (1 << 0);
}
void setHasNoUnsignedOverflow(bool B) {
void setHasNoUnsignedWrap(bool B) {
SubclassOptionalData = (SubclassOptionalData & ~(1 << 0)) | (B << 0);
}
/// hasNoSignedOverflow - Test whether this operation is known to never
/// undergo signed overflow.
bool hasNoSignedOverflow() const {
/// hasNoSignedWrap - Test whether this operation is known to never
/// undergo signed overflow, aka the nsw property.
bool hasNoSignedWrap() const {
return SubclassOptionalData & (1 << 1);
}
void setHasNoSignedOverflow(bool B) {
void setHasNoSignedWrap(bool B) {
SubclassOptionalData = (SubclassOptionalData & ~(1 << 1)) | (B << 1);
}

16
llvm/lib/Analysis/ScalarEvolution.cpp
View File

@ -795,7 +795,7 @@ const SCEV *ScalarEvolution::getZeroExtendExpr(const SCEV *Op,
// If we have special knowledge that this addrec won't overflow,
// we don't need to do any further analysis.
if (AR->hasNoUnsignedOverflow())
if (AR->hasNoUnsignedWrap())
return getAddRecExpr(getZeroExtendExpr(Start, Ty),
getZeroExtendExpr(Step, Ty),
L);
@ -934,7 +934,7 @@ const SCEV *ScalarEvolution::getSignExtendExpr(const SCEV *Op,
// If we have special knowledge that this addrec won't overflow,
// we don't need to do any further analysis.
if (AR->hasNoSignedOverflow())
if (AR->hasNoSignedWrap())
return getAddRecExpr(getSignExtendExpr(Start, Ty),
getSignExtendExpr(Step, Ty),
L);
@ -2497,17 +2497,17 @@ const SCEV *ScalarEvolution::createNodeForPHI(PHINode *PN) {
getSCEV(OBO->getOperand(1)) ==
PHISCEV->getStepRecurrence(*this)) {
const SCEVAddRecExpr *PostInc = PHISCEV->getPostIncExpr(*this);
if (OBO->hasNoUnsignedOverflow()) {
if (OBO->hasNoUnsignedWrap()) {
const_cast<SCEVAddRecExpr *>(PHISCEV)
->setHasNoUnsignedOverflow(true);
->setHasNoUnsignedWrap(true);
const_cast<SCEVAddRecExpr *>(PostInc)
->setHasNoUnsignedOverflow(true);
->setHasNoUnsignedWrap(true);
}
if (OBO->hasNoSignedOverflow()) {
if (OBO->hasNoSignedWrap()) {
const_cast<SCEVAddRecExpr *>(PHISCEV)
->setHasNoSignedOverflow(true);
->setHasNoSignedWrap(true);
const_cast<SCEVAddRecExpr *>(PostInc)
->setHasNoSignedOverflow(true);
->setHasNoSignedWrap(true);
}
}

8
llvm/lib/AsmParser/LLParser.cpp
View File

@ -2082,9 +2082,9 @@ bool LLParser::ParseValID(ValID &ID) {
return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
Constant *C = ConstantExpr::get(Opc, Val0, Val1);
if (NUW)
cast<OverflowingBinaryOperator>(C)->setHasNoUnsignedOverflow(true);
cast<OverflowingBinaryOperator>(C)->setHasNoUnsignedWrap(true);
if (NSW)
cast<OverflowingBinaryOperator>(C)->setHasNoSignedOverflow(true);
cast<OverflowingBinaryOperator>(C)->setHasNoSignedWrap(true);
if (Exact)
cast<SDivOperator>(C)->setIsExact(true);
ID.ConstantVal = C;
@ -2665,9 +2665,9 @@ bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
return Error(ModifierLoc, "nsw only applies to integer operations");
}
if (NUW)
cast<OverflowingBinaryOperator>(Inst)->setHasNoUnsignedOverflow(true);
cast<OverflowingBinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
if (NSW)
cast<OverflowingBinaryOperator>(Inst)->setHasNoSignedOverflow(true);
cast<OverflowingBinaryOperator>(Inst)->setHasNoSignedWrap(true);
}
return Result;
}

8
llvm/lib/Bitcode/Reader/BitcodeReader.cpp
View File

@ -883,10 +883,10 @@ bool BitcodeReader::ResolveGlobalAndAliasInits() {
static void SetOptimizationFlags(Value *V, uint64_t Flags) {
if (OverflowingBinaryOperator *OBO =
dyn_cast<OverflowingBinaryOperator>(V)) {
if (Flags & (1 << bitc::OBO_NO_SIGNED_OVERFLOW))
OBO->setHasNoSignedOverflow(true);
if (Flags & (1 << bitc::OBO_NO_UNSIGNED_OVERFLOW))
OBO->setHasNoUnsignedOverflow(true);
if (Flags & (1 << bitc::OBO_NO_SIGNED_WRAP))
OBO->setHasNoSignedWrap(true);
if (Flags & (1 << bitc::OBO_NO_UNSIGNED_WRAP))
OBO->setHasNoUnsignedWrap(true);
} else if (SDivOperator *Div = dyn_cast<SDivOperator>(V)) {
if (Flags & (1 << bitc::SDIV_EXACT))
Div->setIsExact(true);

8
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -461,10 +461,10 @@ static uint64_t GetOptimizationFlags(const Value *V) {
if (const OverflowingBinaryOperator *OBO =
dyn_cast<OverflowingBinaryOperator>(V)) {
if (OBO->hasNoSignedOverflow())
Flags |= 1 << bitc::OBO_NO_SIGNED_OVERFLOW;
if (OBO->hasNoUnsignedOverflow())
Flags |= 1 << bitc::OBO_NO_UNSIGNED_OVERFLOW;
if (OBO->hasNoSignedWrap())
Flags |= 1 << bitc::OBO_NO_SIGNED_WRAP;
if (OBO->hasNoUnsignedWrap())
Flags |= 1 << bitc::OBO_NO_UNSIGNED_WRAP;
} else if (const SDivOperator *Div = dyn_cast<SDivOperator>(V)) {
if (Div->isExact())
Flags |= 1 << bitc::SDIV_EXACT;

2
llvm/lib/Transforms/Scalar/InstructionCombining.cpp
View File

@ -3084,7 +3084,7 @@ Instruction *InstCombiner::visitSDiv(BinaryOperator &I) {
if (SubOperator *Sub = dyn_cast<SubOperator>(Op0))
if (isa<Constant>(Sub->getOperand(0)) &&
cast<Constant>(Sub->getOperand(0))->isNullValue() &&
Sub->hasNoSignedOverflow())
Sub->hasNoSignedWrap())
return BinaryOperator::CreateSDiv(Sub->getOperand(1),
ConstantExpr::getNeg(RHS));
}

4
llvm/lib/VMCore/AsmWriter.cpp
View File

@ -895,9 +895,9 @@ static void WriteMDNodes(formatted_raw_ostream &Out, TypePrinting &TypePrinter,
static void WriteOptimizationInfo(raw_ostream &Out, const User *U) {
if (const OverflowingBinaryOperator *OBO =
dyn_cast<OverflowingBinaryOperator>(U)) {
if (OBO->hasNoUnsignedOverflow())
if (OBO->hasNoUnsignedWrap())
Out << " nuw";
if (OBO->hasNoSignedOverflow())
if (OBO->hasNoSignedWrap())
Out << " nsw";
} else if (const SDivOperator *Div = dyn_cast<SDivOperator>(U)) {
if (Div->isExact())

2
llvm/lib/VMCore/Constants.cpp
View File

@ -634,7 +634,7 @@ Constant* ConstantExpr::getNSWAdd(Constant* C1, Constant* C2) {
// Set nsw attribute, assuming constant folding didn't eliminate the
// Add.
if (AddOperator *Add = dyn_cast<AddOperator>(C))
Add->setHasNoSignedOverflow(true);
Add->setHasNoSignedWrap(true);
return C;
}