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For the NSWSub support in the builder to actually be useable,

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there need to be corresponding changes to the constant folders,
done in this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82862 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2009-09-26 15:35:35 +00:00
parent 11eab02b77
commit 3548ea8e90
5 changed files with 15 additions and 0 deletions
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1
include/llvm/Constants.h
View File

@ -654,6 +654,7 @@ public:
static Constant *getBitCast (Constant *C, const Type *Ty);
static Constant* getNSWAdd(Constant* C1, Constant* C2);
static Constant* getNSWSub(Constant* C1, Constant* C2);
static Constant* getExactSDiv(Constant* C1, Constant* C2);
/// Transparently provide more efficient getOperand methods.

3
include/llvm/Support/ConstantFolder.h
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@ -44,6 +44,9 @@ public:
Constant *CreateSub(Constant *LHS, Constant *RHS) const {
return ConstantExpr::getSub(LHS, RHS);
}
Constant *CreateNSWSub(Constant *LHS, Constant *RHS) const {
return ConstantExpr::getNSWSub(LHS, RHS);
}
Constant *CreateFSub(Constant *LHS, Constant *RHS) const {
return ConstantExpr::getFSub(LHS, RHS);
}

3
include/llvm/Support/NoFolder.h
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@ -51,6 +51,9 @@ public:
Value *CreateSub(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateSub(LHS, RHS);
}
Value *CreateNSWSub(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateNSWSub(LHS, RHS);
}
Value *CreateFSub(Constant *LHS, Constant *RHS) const {
return BinaryOperator::CreateFSub(LHS, RHS);
}

3
include/llvm/Support/TargetFolder.h
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@ -60,6 +60,9 @@ public:
Constant *CreateSub(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getSub(LHS, RHS));
}
Constant *CreateNSWSub(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getNSWSub(LHS, RHS));
}
Constant *CreateFSub(Constant *LHS, Constant *RHS) const {
return Fold(ConstantExpr::getFSub(LHS, RHS));
}

5
lib/VMCore/Constants.cpp
View File

@ -643,6 +643,11 @@ Constant* ConstantExpr::getNSWAdd(Constant* C1, Constant* C2) {
OverflowingBinaryOperator::NoSignedWrap);
}
Constant* ConstantExpr::getNSWSub(Constant* C1, Constant* C2) {
return getTy(C1->getType(), Instruction::Sub, C1, C2,
OverflowingBinaryOperator::NoSignedWrap);
}
Constant* ConstantExpr::getExactSDiv(Constant* C1, Constant* C2) {
return getTy(C1->getType(), Instruction::SDiv, C1, C2,
SDivOperator::IsExact);