Consistently use FunctionAnalysisManager

Besides a general consistently benefit, the extra layer of indirection
allows the mechanical part of https://reviews.llvm.org/D23256 that
requires touching every transformation and analysis to be factored out
cleanly.

Thanks to David for the suggestion.

llvm-svn: 278077

llvm/lib/Transforms/Utils/LCSSA.cpp

@@ -360,7 +360,7 @@ bool LCSSAWrapperPass::runOnFunction(Function &F) {
   return formLCSSAOnAllLoops(LI, *DT, SE);
 }
 
-PreservedAnalyses LCSSAPass::run(Function &F, AnalysisManager<Function> &AM) {
+PreservedAnalyses LCSSAPass::run(Function &F, FunctionAnalysisManager &AM) {
   auto &LI = AM.getResult<LoopAnalysis>(F);
   auto &DT = AM.getResult<DominatorTreeAnalysis>(F);
   auto *SE = AM.getCachedResult<ScalarEvolutionAnalysis>(F);