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
diff --git a/llvm/lib/Analysis/AssumptionCache.cpp b/llvm/lib/Analysis/AssumptionCache.cpp
index ca71644..42a3d41 100644
--- a/llvm/lib/Analysis/AssumptionCache.cpp
+++ b/llvm/lib/Analysis/AssumptionCache.cpp
@@ -77,7 +77,7 @@
 char AssumptionAnalysis::PassID;
 
 PreservedAnalyses AssumptionPrinterPass::run(Function &F,
-                                             AnalysisManager<Function> &AM) {
+                                             FunctionAnalysisManager &AM) {
   AssumptionCache &AC = AM.getResult<AssumptionAnalysis>(F);
 
   OS << "Cached assumptions for function: " << F.getName() << "\n";