diff options
| -rw-r--r-- | include/llvm/Constants.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/include/llvm/Constants.h b/include/llvm/Constants.h index ec6345846e..6c1b8eb1e6 100644 --- a/include/llvm/Constants.h +++ b/include/llvm/Constants.h @@ -289,7 +289,14 @@ public: /// isNullValue - Return true if this is the value that would be returned by /// getNullValue. - virtual bool isNullValue() const { return false; } + virtual bool isNullValue() const { + // FIXME: This should be made to be MUCH faster. Just check against well + // known null value! + for (unsigned i = 0, e = getNumOperands(); i != e; ++i) + if (!cast<Constant>(getOperand(i))->isNullValue()) + return false; + return true; + } virtual void destroyConstant(); virtual void replaceUsesOfWithOnConstant(Value *From, Value *To); @@ -328,7 +335,14 @@ public: /// isNullValue - Return true if this is the value that would be returned by /// getNullValue. - virtual bool isNullValue() const { return false; } + virtual bool isNullValue() const { + // FIXME: This should be made to be MUCH faster. Just check against well + // known null value! + for (unsigned i = 0, e = getNumOperands(); i != e; ++i) + if (!cast<Constant>(getOperand(i))->isNullValue()) + return false; + return true; + } virtual void destroyConstant(); virtual void replaceUsesOfWithOnConstant(Value *From, Value *To); |