[PM] Add support to the analysis managers to query explicitly for cached

results.

This is the last piece of infrastructure needed to effectively support
querying *up* the analysis layers. The next step will be to introduce
a proxy which provides access to those layers with appropriate use of
const to direct queries to the safe interface.

llvm-svn: 195525

1 files changed, 13 insertions, 0 deletions

diff --git a/llvm/lib/IR/PassManager.cpp b/llvm/lib/IR/PassManager.cpp
index 76210a31ed7..bbfc304e6dd 100644
--- a/llvm/lib/IR/PassManager.cpp
+++ b/llvm/lib/IR/PassManager.cpp
@@ -53,6 +53,12 @@ ModuleAnalysisManager::getResultImpl(void *PassID, Module *M) {
   return *RI->second;
 }
 
+const detail::AnalysisResultConcept<Module *> *
+ModuleAnalysisManager::getCachedResultImpl(void *PassID, Module *M) const {
+  ModuleAnalysisResultMapT::const_iterator RI = ModuleAnalysisResults.find(PassID);
+  return RI == ModuleAnalysisResults.end() ? 0 : &*RI->second;
+}
+
 void ModuleAnalysisManager::invalidateImpl(void *PassID, Module *M) {
   ModuleAnalysisResults.erase(PassID);
 }
@@ -122,6 +128,13 @@ FunctionAnalysisManager::getResultImpl(void *PassID, Function *F) {
   return *RI->second->second;
 }
 
+const detail::AnalysisResultConcept<Function *> *
+FunctionAnalysisManager::getCachedResultImpl(void *PassID, Function *F) const {
+  FunctionAnalysisResultMapT::const_iterator RI =
+      FunctionAnalysisResults.find(std::make_pair(PassID, F));
+  return RI == FunctionAnalysisResults.end() ? 0 : &*RI->second->second;
+}
+
 void FunctionAnalysisManager::invalidateImpl(void *PassID, Function *F) {
   FunctionAnalysisResultMapT::iterator RI =
       FunctionAnalysisResults.find(std::make_pair(PassID, F));