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TRE: Move class into anonymous namespace.

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While there shrink a dangerously large SmallPtrSet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187050 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2013-07-24 16:12:08 +00:00
parent 3a0a4d0c5c
commit 6a565e5be6
1 changed files with 6 additions and 4 deletions
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10
lib/Transforms/Scalar/TailRecursionElimination.cpp
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@ -145,19 +145,20 @@ static bool CanTRE(AllocaInst *AI) {
isa<ConstantInt>(AI->getArraySize());
}
namespace {
struct AllocaCaptureTracker : public CaptureTracker {
AllocaCaptureTracker() : Captured(false) {}
void tooManyUses() { Captured = true; }
void tooManyUses() LLVM_OVERRIDE { Captured = true; }
bool shouldExplore(Use *U) {
bool shouldExplore(Use *U) LLVM_OVERRIDE {
Value *V = U->getUser();
if (isa<CallInst>(V) || isa<InvokeInst>(V))
UsesAlloca.insert(V);
return true;
}
bool captured(Use *U) {
bool captured(Use *U) LLVM_OVERRIDE {
if (isa<ReturnInst>(U->getUser()))
return false;
Captured = true;
@ -165,8 +166,9 @@ struct AllocaCaptureTracker : public CaptureTracker {
}
bool Captured;
SmallPtrSet<const Value *, 64> UsesAlloca;
SmallPtrSet<const Value *, 16> UsesAlloca;
};
} // end anonymous namespace
bool TailCallElim::runOnFunction(Function &F) {
// If this function is a varargs function, we won't be able to PHI the args