[analyzer] Do not inline functions which previously reached max block

count.

This is an optimization for "retry without inlining" option. Here, if we
failed to inline a function due to reaching the basic block max count,
we are going to store this information and not try to inline it
again in the translation unit. This can be viewed as a function summary.

On sqlite, with this optimization, we are 30% faster then before and
cover 10% more basic blocks (partially because the number of times we
reach timeout is decreased by 20%).

llvm-svn: 153730

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
index b1d2f31df0e..3b9deda2bac 100644
--- a/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
+++ b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
@@ -104,6 +104,10 @@ public:
   /// Time the analyzes time of each translation unit.
   static llvm::Timer* TUTotalTimer;
 
+  /// The information about analyzed functions shared throughout the
+  /// translation unit.
+  FunctionSummariesTy FunctionSummaries;
+
   AnalysisConsumer(const Preprocessor& pp,
                    const std::string& outdir,
                    const AnalyzerOptions& opts,
@@ -449,7 +453,7 @@ void AnalysisConsumer::ActionExprEngine(Decl *D, bool ObjCGCEnabled,
   if (!Mgr->getCFG(D))
     return;
 
-  ExprEngine Eng(*Mgr, ObjCGCEnabled, VisitedCallees);
+  ExprEngine Eng(*Mgr, ObjCGCEnabled, VisitedCallees, &FunctionSummaries);
 
   // Set the graph auditor.
   OwningPtr<ExplodedNode::Auditor> Auditor;