[llvm] r252015 - [LAA] LLE 4/6: APIs to access the dependent instructions for a dependence, NFC

[Adam Nemet via llvm-commits]

Author: anemet
Date: Tue Nov  3 17:49:58 2015
New Revision: 252015

URL: http://llvm.org/viewvc/llvm-project?rev=252015&view=rev
Log:
[LAA] LLE 4/6: APIs to access the dependent instructions for a dependence, NFC

Summary:
The functions use LAI and MemoryDepChecker classes so they need to be
defined after those definitions outside of the Dependence class.

Will be used by the LoopLoadElimination pass.

Reviewers: hfinkel

Subscribers: rengolin, llvm-commits

Differential Revision: http://reviews.llvm.org/D13257

Modified:
    llvm/trunk/include/llvm/Analysis/LoopAccessAnalysis.h

Modified: llvm/trunk/include/llvm/Analysis/LoopAccessAnalysis.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Analysis/LoopAccessAnalysis.h?rev=252015&r1=252014&r2=252015&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Analysis/LoopAccessAnalysis.h (original)
+++ llvm/trunk/include/llvm/Analysis/LoopAccessAnalysis.h Tue Nov  3 17:49:58 2015
@@ -33,6 +33,7 @@ class ScalarEvolution;
 class Loop;
 class SCEV;
 class SCEVUnionPredicate;
+class LoopAccessInfo;
 
 /// Optimization analysis message produced during vectorization. Messages inform
 /// the user why vectorization did not occur.
@@ -170,6 +171,11 @@ public:
     Dependence(unsigned Source, unsigned Destination, DepType Type)
         : Source(Source), Destination(Destination), Type(Type) {}
 
+    /// \brief Return the source instruction of the dependence.
+    Instruction *getSource(const LoopAccessInfo &LAI) const;
+    /// \brief Return the destination instruction of the dependence.
+    Instruction *getDestination(const LoopAccessInfo &LAI) const;
+
     /// \brief Dependence types that don't prevent vectorization.
     static bool isSafeForVectorization(DepType Type);
 
@@ -679,6 +685,17 @@ private:
   DominatorTree *DT;
   LoopInfo *LI;
 };
+
+inline Instruction *MemoryDepChecker::Dependence::getSource(
+    const LoopAccessInfo &LAI) const {
+  return LAI.getDepChecker().getMemoryInstructions()[Source];
+}
+
+inline Instruction *MemoryDepChecker::Dependence::getDestination(
+    const LoopAccessInfo &LAI) const {
+  return LAI.getDepChecker().getMemoryInstructions()[Destination];
+}
+
 } // End llvm namespace
 
 #endif