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add an m_ConstantInt matching predicate that binds to a uint64_t, and add an m_OneUse()

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predicate that matches if the subexpr has a single use.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130235 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2011-04-26 19:50:39 +00:00
parent f7da8821b4
commit 3443493cc7
1 changed files with 35 additions and 0 deletions
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35
include/llvm/Support/PatternMatch.h
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@ -40,6 +40,23 @@ bool match(Val *V, const Pattern &P) {
return const_cast<Pattern&>(P).match(V);
}
template<typename SubPattern_t>
struct OneUse_match {
SubPattern_t SubPattern;
OneUse_match(const SubPattern_t &SP) : SubPattern(SP) {}
template<typename OpTy>
bool match(OpTy *V) {
return V->hasOneUse() && SubPattern.match(V);
}
};
template<typename T>
inline OneUse_match<T> m_OneUse(const T &SubPattern) { return SubPattern; }
template<typename Class>
struct class_match {
template<typename ITy>
@ -227,6 +244,24 @@ struct specificval_ty {
/// m_Specific - Match if we have a specific specified value.
inline specificval_ty m_Specific(const Value *V) { return V; }
struct bind_const_intval_ty {
uint64_t &VR;
bind_const_intval_ty(uint64_t &V) : VR(V) {}
template<typename ITy>
bool match(ITy *V) {
if (ConstantInt *CV = dyn_cast<ConstantInt>(V))
if (CV->getBitWidth() <= 64) {
VR = CV->getZExtValue();
return true;
}
return false;
}
};
/// m_ConstantInt - Match a ConstantInt and bind to its value. This does not
/// match ConstantInts wider than 64-bits.
inline bind_const_intval_ty m_ConstantInt(uint64_t &V) { return V; }
//===----------------------------------------------------------------------===//
// Matchers for specific binary operators.