Add a convenient form of AliasAnalysis::alias for the case where the sizes

are unknown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110090 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 8 insertions, 6 deletions

diff --git a/include/llvm/Analysis/AliasAnalysis.h b/include/llvm/Analysis/AliasAnalysis.h
index e611a35fc9..e0068dc7b2 100644
--- a/include/llvm/Analysis/AliasAnalysis.h
+++ b/include/llvm/Analysis/AliasAnalysis.h
@@ -94,6 +94,11 @@ public:
   virtual AliasResult alias(const Value *V1, unsigned V1Size,
                             const Value *V2, unsigned V2Size);
 
+  /// alias - A convenience wrapper for the case where the sizes are unknown.
+  AliasResult alias(const Value *V1, const Value *V2) {
+    return alias(V1, ~0u, V2, ~0u);
+  }
+
   /// isNoAlias - A trivial helper function to check to see if the specified
   /// pointers are no-alias.
   bool isNoAlias(const Value *V1, unsigned V1Size,
diff --git a/lib/Analysis/Lint.cpp b/lib/Analysis/Lint.cpp
index 5624430332..fe01fd7b22 100644
--- a/lib/Analysis/Lint.cpp
+++ b/lib/Analysis/Lint.cpp
@@ -246,8 +246,7 @@ void Lint::visitCallSite(CallSite CS) {
         // where nothing is known.
         if (Formal->hasNoAliasAttr() && Actual->getType()->isPointerTy())
           for (CallSite::arg_iterator BI = CS.arg_begin(); BI != AE; ++BI) {
-            Assert1(AI == BI ||
-                    AA->alias(*AI, ~0u, *BI, ~0u) != AliasAnalysis::MustAlias,
+            Assert1(AI == BI || AA->alias(*AI, *BI) != AliasAnalysis::MustAlias,
                     "Unusual: noalias argument aliases another argument", &I);
           }
 
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp
index 4c3cf804d5..e97bc3b672 100644
--- a/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -195,8 +195,7 @@ getPointerDependencyFrom(Value *MemPtr, uint64_t MemSize, bool isLoad,
         // FIXME: This only considers queries directly on the invariant-tagged
         // pointer, not on query pointers that are indexed off of them.  It'd
         // be nice to handle that at some point.
-        AliasAnalysis::AliasResult R = 
-          AA->alias(II->getArgOperand(2), ~0U, MemPtr, ~0U);
+        AliasAnalysis::AliasResult R = AA->alias(II->getArgOperand(2), MemPtr);
         if (R == AliasAnalysis::MustAlias) {
           InvariantTag = II->getArgOperand(0);
           continue;
@@ -208,8 +207,7 @@ getPointerDependencyFrom(Value *MemPtr, uint64_t MemSize, bool isLoad,
         // FIXME: This only considers queries directly on the invariant-tagged
         // pointer, not on query pointers that are indexed off of them.  It'd
         // be nice to handle that at some point.
-        AliasAnalysis::AliasResult R =
-          AA->alias(II->getArgOperand(1), ~0U, MemPtr, ~0U);
+        AliasAnalysis::AliasResult R = AA->alias(II->getArgOperand(1), MemPtr);
         if (R == AliasAnalysis::MustAlias)
           return MemDepResult::getDef(II);
       }