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[LLVM] Change isa<> to a variadic function template

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Change isa<> to a variadic function template, so that it can be used to test against one of multiple types as follows:
   isa<Type0, Type1, Type2>(Val)

Differential Revision: https://reviews.llvm.org/D81045
This commit is contained in:
Rahul Joshi 2020-06-15 18:25:14 +00:00 committed by Mehdi Amini
parent 74fefe7dbd
commit b474372d7b
3 changed files with 15 additions and 7 deletions
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14
include/llvm/Support/Casting.h
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@ -132,24 +132,30 @@ struct isa_impl_wrap<To, FromTy, FromTy> {
}
};
// isa<X> - Return true if the parameter to the template is an instance of the
// template type argument. Used like this:
// isa<X> - Return true if the parameter to the template is an instance of one
// of the template type arguments. Used like this:
//
// if (isa<Type>(myVal)) { ... }
// if (isa<Type0, Type1, Type2>(myVal)) { ... }
//
template <class X, class Y> LLVM_NODISCARD inline bool isa(const Y &Val) {
return isa_impl_wrap<X, const Y,
typename simplify_type<const Y>::SimpleType>::doit(Val);
}
template <typename First, typename Second, typename... Rest, typename Y>
LLVM_NODISCARD inline bool isa(const Y &Val) {
return isa<First>(Val) || isa<Second, Rest...>(Val);
}
// isa_and_nonnull<X> - Functionally identical to isa, except that a null value
// is accepted.
//
template <class X, class Y>
template <typename... X, class Y>
LLVM_NODISCARD inline bool isa_and_nonnull(const Y &Val) {
if (!Val)
return false;
return isa<X>(Val);
return isa<X...>(Val);
}
//===----------------------------------------------------------------------===//

6
lib/Analysis/ScalarEvolution.cpp
View File

@ -3860,7 +3860,8 @@ bool ScalarEvolution::containsAddRecurrence(const SCEV *S) {
if (I != HasRecMap.end())
return I->second;
bool FoundAddRec = SCEVExprContains(S, isa<SCEVAddRecExpr, const SCEV *>);
bool FoundAddRec =
SCEVExprContains(S, [](const SCEV *S) { return isa<SCEVAddRecExpr>(S); });
HasRecMap.insert({S, FoundAddRec});
return FoundAddRec;
}
@ -11201,8 +11202,9 @@ static bool findArrayDimensionsRec(ScalarEvolution &SE,
// Returns true when one of the SCEVs of Terms contains a SCEVUnknown parameter.
static inline bool containsParameters(SmallVectorImpl<const SCEV *> &Terms) {
for (const SCEV *T : Terms)
if (SCEVExprContains(T, isa<SCEVUnknown, const SCEV *>))
if (SCEVExprContains(T, [](const SCEV *S) { return isa<SCEVUnknown>(S); }))
return true;
return false;
}

2
lib/Target/PowerPC/PPCBoolRetToInt.cpp
View File

@ -220,7 +220,7 @@ class PPCBoolRetToInt : public FunctionPass {
auto Defs = findAllDefs(U);
// If the values are all Constants or Arguments, don't bother
if (llvm::none_of(Defs, isa<Instruction, Value *>))
if (llvm::none_of(Defs, [](Value *V) { return isa<Instruction>(V); }))
return false;
// Presently, we only know how to handle PHINode, Constant, Arguments and