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Extend struct and array constants to support isNullValue

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llvm-svn: 5719
This commit is contained in:
Chris Lattner 2003-03-06 21:02:43 +00:00
parent 90932ffc26
commit 07a7a75331
1 changed files with 16 additions and 2 deletions
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18
include/llvm/Constants.h
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@ -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);