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Add methods for creating NSW subtraction, as already exists 

for addition.

llvm-svn: 82860
This commit is contained in:
Duncan Sands 2009-09-26 15:21:48 +00:00
parent 534ad04302
commit 8c0fb28992
2 changed files with 27 additions and 0 deletions
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21
llvm/include/llvm/InstrTypes.h
View File

@ -216,6 +216,27 @@ public:
return BO;
}
/// CreateNSWSub - Create an Sub operator with the NSW flag set.
///
static BinaryOperator *CreateNSWSub(Value *V1, Value *V2,
const Twine &Name = "") {
BinaryOperator *BO = CreateSub(V1, V2, Name);
BO->setHasNoSignedWrap(true);
return BO;
}
static BinaryOperator *CreateNSWSub(Value *V1, Value *V2,
const Twine &Name, BasicBlock *BB) {
BinaryOperator *BO = CreateSub(V1, V2, Name, BB);
BO->setHasNoSignedWrap(true);
return BO;
}
static BinaryOperator *CreateNSWSub(Value *V1, Value *V2,
const Twine &Name, Instruction *I) {
BinaryOperator *BO = CreateSub(V1, V2, Name, I);
BO->setHasNoSignedWrap(true);
return BO;
}
/// CreateExactSDiv - Create an SDiv operator with the exact flag set.
///
static BinaryOperator *CreateExactSDiv(Value *V1, Value *V2,

6
llvm/include/llvm/Support/IRBuilder.h
View File

@ -298,6 +298,12 @@ public:
return Folder.CreateSub(LC, RC);
return Insert(BinaryOperator::CreateSub(LHS, RHS), Name);
}
Value *CreateNSWSub(Value *LHS, Value *RHS, const Twine &Name = "") {
if (Constant *LC = dyn_cast<Constant>(LHS))
if (Constant *RC = dyn_cast<Constant>(RHS))
return Folder.CreateNSWSub(LC, RC);
return Insert(BinaryOperator::CreateNSWSub(LHS, RHS), Name);
}
Value *CreateFSub(Value *LHS, Value *RHS, const Twine &Name = "") {
if (Constant *LC = dyn_cast<Constant>(LHS))
if (Constant *RC = dyn_cast<Constant>(RHS))