[AliasSetTracker] Minor style tweak to avoid a variable w/two distinct live ranges...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353267 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp
index 6b4240c108d78978ecea7e6d19cb0ae0ac4c70a1..b0d38e8518874a01d2c6010b5b4123727af66c5c 100644 (file)
--- a/lib/Analysis/AliasSetTracker.cpp
+++ b/lib/Analysis/AliasSetTracker.cpp
@@ -428,14 +428,12 @@ void AliasSetTracker::addUnknown(Instruction *Inst) {
   if (!Inst->mayReadOrWriteMemory())
     return; // doesn't alias anything
 
-  AliasSet *AS = findAliasSetForUnknownInst(Inst);
-  if (AS) {
+  if (AliasSet *AS = findAliasSetForUnknownInst(Inst)) {
     AS->addUnknownInst(Inst, AA);
     return;
   }
   AliasSets.push_back(new AliasSet());
-  AS = &AliasSets.back();
-  AS->addUnknownInst(Inst, AA);
+  AliasSets.back().addUnknownInst(Inst, AA);
 }
 
 void AliasSetTracker::add(Instruction *I) {