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[SCEV] Reduce the scope of a struct; NFC

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282513 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjoy Das 2016-09-27 18:01:44 +00:00
parent 0618af6f33
commit 4ecb8cd59f
1 changed files with 22 additions and 24 deletions
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46
lib/Analysis/ScalarEvolution.cpp
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@ -3343,31 +3343,29 @@ bool ScalarEvolution::checkValidity(const SCEV *S) const {
return !F.FindOne;
}
namespace {
// Helper class working with SCEVTraversal to figure out if a SCEV contains
// a sub SCEV of scAddRecExpr type. FindInvalidSCEVUnknown::FoundOne is set
// iff if such sub scAddRecExpr type SCEV is found.
struct FindAddRecurrence {
bool FoundOne;
FindAddRecurrence() : FoundOne(false) {}
bool follow(const SCEV *S) {
switch (static_cast<SCEVTypes>(S->getSCEVType())) {
case scAddRecExpr:
FoundOne = true;
case scConstant:
case scUnknown:
case scCouldNotCompute:
return false;
default:
return true;
}
}
bool isDone() const { return FoundOne; }
};
}
bool ScalarEvolution::containsAddRecurrence(const SCEV *S) {
// Helper class working with SCEVTraversal to figure out if a SCEV contains a
// sub SCEV of scAddRecExpr type. FindInvalidSCEVUnknown::FoundOne is set iff
// if such sub scAddRecExpr type SCEV is found.
struct FindAddRecurrence {
bool FoundOne;
FindAddRecurrence() : FoundOne(false) {}
bool follow(const SCEV *S) {
switch (static_cast<SCEVTypes>(S->getSCEVType())) {
case scAddRecExpr:
FoundOne = true;
case scConstant:
case scUnknown:
case scCouldNotCompute:
return false;
default:
return true;
}
}
bool isDone() const { return FoundOne; }
};
HasRecMapType::iterator I = HasRecMap.find_as(S);
if (I != HasRecMap.end())
return I->second;