diff options
Diffstat (limited to 'lib/VMCore/Value.cpp')
-rw-r--r-- | lib/VMCore/Value.cpp | 44 |
1 files changed, 18 insertions, 26 deletions
diff --git a/lib/VMCore/Value.cpp b/lib/VMCore/Value.cpp index 29f6a80..f1815e3 100644 --- a/lib/VMCore/Value.cpp +++ b/lib/VMCore/Value.cpp @@ -35,22 +35,21 @@ using namespace llvm; // Value Class //===----------------------------------------------------------------------===// -static inline const Type *checkType(const Type *Ty) { +static inline Type *checkType(const Type *Ty) { assert(Ty && "Value defined with a null type: Error!"); - return Ty; + return const_cast<Type*>(Ty); } Value::Value(const Type *ty, unsigned scid) : SubclassID(scid), HasValueHandle(0), - SubclassOptionalData(0), SubclassData(0), VTy(checkType(ty)), + SubclassOptionalData(0), SubclassData(0), VTy((Type*)checkType(ty)), UseList(0), Name(0) { + // FIXME: Why isn't this in the subclass gunk?? if (isa<CallInst>(this) || isa<InvokeInst>(this)) - assert((VTy->isFirstClassType() || VTy->isVoidTy() || - ty->isOpaqueTy() || VTy->isStructTy()) && - "invalid CallInst type!"); + assert((VTy->isFirstClassType() || VTy->isVoidTy() || VTy->isStructTy()) && + "invalid CallInst type!"); else if (!isa<Constant>(this) && !isa<BasicBlock>(this)) - assert((VTy->isFirstClassType() || VTy->isVoidTy() || - ty->isOpaqueTy()) && + assert((VTy->isFirstClassType() || VTy->isVoidTy()) && "Cannot create non-first-class values except for constants!"); } @@ -281,17 +280,16 @@ void Value::takeName(Value *V) { } -// uncheckedReplaceAllUsesWith - This is exactly the same as replaceAllUsesWith, -// except that it doesn't have all of the asserts. The asserts fail because we -// are half-way done resolving types, which causes some types to exist as two -// different Type*'s at the same time. This is a sledgehammer to work around -// this problem. -// -void Value::uncheckedReplaceAllUsesWith(Value *New) { +void Value::replaceAllUsesWith(Value *New) { + assert(New && "Value::replaceAllUsesWith(<null>) is invalid!"); + assert(New != this && "this->replaceAllUsesWith(this) is NOT valid!"); + assert(New->getType() == getType() && + "replaceAllUses of value with new value of different type!"); + // Notify all ValueHandles (if present) that this value is going away. if (HasValueHandle) ValueHandleBase::ValueIsRAUWd(this, New); - + while (!use_empty()) { Use &U = *UseList; // Must handle Constants specially, we cannot call replaceUsesOfWith on a @@ -302,18 +300,12 @@ void Value::uncheckedReplaceAllUsesWith(Value *New) { continue; } } - + U.set(New); } -} - -void Value::replaceAllUsesWith(Value *New) { - assert(New && "Value::replaceAllUsesWith(<null>) is invalid!"); - assert(New != this && "this->replaceAllUsesWith(this) is NOT valid!"); - assert(New->getType() == getType() && - "replaceAllUses of value with new value of different type!"); - - uncheckedReplaceAllUsesWith(New); + + if (BasicBlock *BB = dyn_cast<BasicBlock>(this)) + BB->replaceSuccessorsPhiUsesWith(cast<BasicBlock>(New)); } Value *Value::stripPointerCasts() { |