[NFC] Consolidate six getPointerOperand() utility functions into one place

There are six separate instances of getPointerOperand() utility.
LoopVectorize.cpp has one of them,
and I don't want to create a 7th one while I'm trying to move
LoopVectorizationLegality into a separate file
(eventual objective is to move it to Analysis tree).

See http://lists.llvm.org/pipermail/llvm-dev/2018-February/120999.html
for llvm-dev discussions

Closes D43323.

Patch by Hideki Saito <hideki.saito@intel.com>.

llvm-svn: 327173

1 files changed, 1 insertions, 11 deletions

diff --git a/llvm/lib/Analysis/Delinearization.cpp b/llvm/lib/Analysis/Delinearization.cpp
index dd5af9d43ef..4cafb7da16d 100644
--- a/llvm/lib/Analysis/Delinearization.cpp
+++ b/llvm/lib/Analysis/Delinearization.cpp
@@ -69,16 +69,6 @@ bool Delinearization::runOnFunction(Function &F) {
   return false;
 }
 
-static Value *getPointerOperand(Instruction &Inst) {
-  if (LoadInst *Load = dyn_cast<LoadInst>(&Inst))
-    return Load->getPointerOperand();
-  else if (StoreInst *Store = dyn_cast<StoreInst>(&Inst))
-    return Store->getPointerOperand();
-  else if (GetElementPtrInst *Gep = dyn_cast<GetElementPtrInst>(&Inst))
-    return Gep->getPointerOperand();
-  return nullptr;
-}
-
 void Delinearization::print(raw_ostream &O, const Module *) const {
   O << "Delinearization on function " << F->getName() << ":\n";
   for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
@@ -93,7 +83,7 @@ void Delinearization::print(raw_ostream &O, const Module *) const {
     // Delinearize the memory access as analyzed in all the surrounding loops.
     // Do not analyze memory accesses outside loops.
     for (Loop *L = LI->getLoopFor(BB); L != nullptr; L = L->getParentLoop()) {
-      const SCEV *AccessFn = SE->getSCEVAtScope(getPointerOperand(*Inst), L);
+      const SCEV *AccessFn = SE->getSCEVAtScope(getPointerOperand(Inst), L);
 
       const SCEVUnknown *BasePointer =
           dyn_cast<SCEVUnknown>(SE->getPointerBase(AccessFn));