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Add m_Zero().

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45255 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-12-20 04:47:44 +00:00
parent e3c1cfb181
commit 46f1a8797c
1 changed files with 18 additions and 0 deletions
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18
include/llvm/Support/PatternMatch.h
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@ -46,9 +46,24 @@ struct leaf_ty {
bool match(ITy *V) { return isa<Class>(V); }
};
/// m_Value() - Match an arbitrary value and ignore it.
inline leaf_ty<Value> m_Value() { return leaf_ty<Value>(); }
/// m_ConstantInt() - Match an arbitrary ConstantInt and ignore it.
inline leaf_ty<ConstantInt> m_ConstantInt() { return leaf_ty<ConstantInt>(); }
struct zero_ty {
template<typename ITy>
bool match(ITy *V) {
if (const Constant *C = dyn_cast<Constant>(V))
return C->isNullValue();
return false;
}
};
/// m_Zero() - Match an arbitrary zero/null constant.
inline zero_ty m_Zero() { return zero_ty(); }
template<typename Class>
struct bind_ty {
Class *&VR;
@ -64,7 +79,10 @@ struct bind_ty {
}
};
/// m_Value - Match a value, capturing it if we match.
inline bind_ty<Value> m_Value(Value *&V) { return V; }
/// m_ConstantInt - Match a ConstantInt, capturing the value if we match.
inline bind_ty<ConstantInt> m_ConstantInt(ConstantInt *&CI) { return CI; }
//===----------------------------------------------------------------------===//