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Move onlyUsedByLifetimeMarkers to ValueTracking so that it can be used by other
passes as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133904 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -158,6 +158,10 @@ namespace llvm {
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return GetUnderlyingObject(const_cast<Value *>(V), TD, MaxLookup);
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}
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/// onlyUsedByLifetimeMarkers - Return true if the only users of this pointer
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/// are lifetime markers.
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bool onlyUsedByLifetimeMarkers(const Value *V);
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} // end namespace llvm
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#endif
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@ -1783,3 +1783,19 @@ llvm::GetUnderlyingObject(Value *V, const TargetData *TD, unsigned MaxLookup) {
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}
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return V;
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}
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/// onlyUsedByLifetimeMarkers - Return true if the only users of this pointer
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/// are lifetime markers.
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///
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bool llvm::onlyUsedByLifetimeMarkers(const Value *V) {
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for (Value::const_use_iterator UI = V->use_begin(), UE = V->use_end();
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UI != UE; ++UI) {
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const IntrinsicInst *II = dyn_cast<IntrinsicInst>(*UI);
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if (!II) return false;
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if (II->getIntrinsicID() != Intrinsic::lifetime_start &&
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II->getIntrinsicID() != Intrinsic::lifetime_end)
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return false;
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}
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return true;
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}
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@ -38,6 +38,7 @@
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#include "llvm/Analysis/DIBuilder.h"
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#include "llvm/Analysis/Dominators.h"
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#include "llvm/Analysis/InstructionSimplify.h"
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#include "llvm/Analysis/ValueTracking.h"
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#include "llvm/Transforms/Utils/Local.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallPtrSet.h"
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@ -73,22 +74,6 @@ struct DenseMapInfo<std::pair<BasicBlock*, unsigned> > {
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};
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}
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/// onlyUsedByLifetimeMarkers - Return true if the only users of this pointer
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/// are lifetime markers.
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///
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static bool onlyUsedByLifetimeMarkers(const Value *V) {
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for (Value::const_use_iterator UI = V->use_begin(), UE = V->use_end();
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UI != UE; ++UI) {
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const IntrinsicInst *II = dyn_cast<IntrinsicInst>(*UI);
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if (!II) return false;
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if (II->getIntrinsicID() != Intrinsic::lifetime_start &&
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II->getIntrinsicID() != Intrinsic::lifetime_end)
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return false;
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}
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return true;
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}
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/// isAllocaPromotable - Return true if this alloca is legal for promotion.
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/// This is true if there are only loads and stores to the alloca.
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///
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