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

diff --git a/include/llvm/Analysis/ValueTracking.h b/include/llvm/Analysis/ValueTracking.h
index 6df1693c78e615349e9c4d78c8abb7216fe53092..d4354bb3ff8aa2fb5b25636f55781e5dd398d9ac 100644 (file)
--- a/include/llvm/Analysis/ValueTracking.h
+++ b/include/llvm/Analysis/ValueTracking.h
@@ -158,6 +158,10 @@ namespace llvm {
     return GetUnderlyingObject(const_cast<Value *>(V), TD, MaxLookup);
   }
 
+  /// onlyUsedByLifetimeMarkers - Return true if the only users of this pointer
+  /// are lifetime markers.
+  bool onlyUsedByLifetimeMarkers(const Value *V);
+
 } // end namespace llvm
 
 #endif

diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index dab5aebd6c646356a64264c613ad2efea401ef26..130e3ced42dc3240b09d47bc2b13a7a7d29296ec 100644 (file)
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -1783,3 +1783,19 @@ llvm::GetUnderlyingObject(Value *V, const TargetData *TD, unsigned MaxLookup) {
   }
   return V;
 }
+
+/// onlyUsedByLifetimeMarkers - Return true if the only users of this pointer
+/// are lifetime markers.
+///
+bool llvm::onlyUsedByLifetimeMarkers(const Value *V) {
+  for (Value::const_use_iterator UI = V->use_begin(), UE = V->use_end();
+       UI != UE; ++UI) {
+    const IntrinsicInst *II = dyn_cast<IntrinsicInst>(*UI);
+    if (!II) return false;
+
+    if (II->getIntrinsicID() != Intrinsic::lifetime_start &&
+        II->getIntrinsicID() != Intrinsic::lifetime_end)
+      return false;
+  }
+  return true;
+}

diff --git a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index 32d1dcccd2e09052746cf627c9ea1771802038f3..e5a00f4e97744c61b59e721fd07a75e5cf2204b9 100644 (file)
--- a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -38,6 +38,7 @@
 #include "llvm/Analysis/DIBuilder.h"
 #include "llvm/Analysis/Dominators.h"
 #include "llvm/Analysis/InstructionSimplify.h"
+#include "llvm/Analysis/ValueTracking.h"
 #include "llvm/Transforms/Utils/Local.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallPtrSet.h"
@@ -73,22 +74,6 @@ struct DenseMapInfo<std::pair<BasicBlock*, unsigned> > {
 };
 }
 
-/// onlyUsedByLifetimeMarkers - Return true if the only users of this pointer
-/// are lifetime markers.
-///
-static bool onlyUsedByLifetimeMarkers(const Value *V) {
-  for (Value::const_use_iterator UI = V->use_begin(), UE = V->use_end();
-       UI != UE; ++UI) {
-    const IntrinsicInst *II = dyn_cast<IntrinsicInst>(*UI);
-    if (!II) return false;
-
-    if (II->getIntrinsicID() != Intrinsic::lifetime_start &&
-        II->getIntrinsicID() != Intrinsic::lifetime_end)
-      return false;
-  }
-  return true;
-}
-
 /// isAllocaPromotable - Return true if this alloca is legal for promotion.
 /// This is true if there are only loads and stores to the alloca.
 ///