[upstream-update] update AA interface usage

SVN r262490 reformulated the Alias Analysis interfaces.  The TLI is no longer
needed to construct the AA Result.  Because the TLI was used specifically for
the base constructor, we now no longer need that option.  Simplify it according
to the new API.  NFC.

(cherry picked from commit 12dc8a8)
(cherry picked from commit 270a4c2)

Author: compnerd

include/swift/LLVMPasses/Passes.h

@@ -22,8 +22,7 @@ namespace swift {
   struct SwiftAAResult : llvm::AAResultBase<SwiftAAResult> {
     friend llvm::AAResultBase<SwiftAAResult>;
 
-    explicit SwiftAAResult(const llvm::TargetLibraryInfo &TLI)
-        : AAResultBase(TLI) {}
+    explicit SwiftAAResult() : AAResultBase() {}
     SwiftAAResult(SwiftAAResult &&Arg)
         : AAResultBase(std::move(Arg)) {}
 

lib/LLVMPasses/LLVMSwiftAA.cpp

@@ -72,8 +72,7 @@ SwiftAAWrapperPass::SwiftAAWrapperPass() : ImmutablePass(ID) {
 }
 
 bool SwiftAAWrapperPass::doInitialization(Module &M) {
-  Result.reset(new SwiftAAResult(
-      getAnalysis<TargetLibraryInfoWrapperPass>().getTLI()));
+  Result.reset(new SwiftAAResult());
   return false;
 }