Refactor inline costs analysis by removing the InlineCostAnalysis class

[oota-llvm.git] / include / llvm / Transforms / IPO / InlinerPass.h

diff --git a/include/llvm/Transforms/IPO/InlinerPass.h b/include/llvm/Transforms/IPO/InlinerPass.h
index 3aed6494b7cc6fca9fccf2cbdc8afa7ff29b8762..58ef0cbbfb5d0b1c74cc80a0cad83959da92c84e 100644 (file)
--- a/include/llvm/Transforms/IPO/InlinerPass.h
+++ b/include/llvm/Transforms/IPO/InlinerPass.h
@@ -14,41 +14,51 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef INLINER_H
-#define INLINER_H
+#ifndef LLVM_TRANSFORMS_IPO_INLINERPASS_H
+#define LLVM_TRANSFORMS_IPO_INLINERPASS_H
 
-#include "llvm/CallGraphSCCPass.h"
-#include "llvm/Transforms/Utils/InlineCost.h"
+#include "llvm/Analysis/CallGraphSCCPass.h"
 
 namespace llvm {
-  class CallSite;
+class AssumptionCacheTracker;
+class CallSite;
+class DataLayout;
+class InlineCost;
+template <class PtrType, unsigned SmallSize> class SmallPtrSet;
 
 /// Inliner - This class contains all of the helper code which is used to
 /// perform the inlining operations that do not depend on the policy.
 ///
 struct Inliner : public CallGraphSCCPass {
-  explicit Inliner(void *ID);
-  explicit Inliner(void *ID, int Threshold);
+  explicit Inliner(char &ID);
+  explicit Inliner(char &ID, int Threshold, bool InsertLifetime);
 
   /// getAnalysisUsage - For this class, we declare that we require and preserve
   /// the call graph.  If the derived class implements this method, it should
   /// always explicitly call the implementation here.
-  virtual void getAnalysisUsage(AnalysisUsage &Info) const;
+  void getAnalysisUsage(AnalysisUsage &Info) const override;
 
   // Main run interface method, this implements the interface required by the
   // Pass class.
-  virtual bool runOnSCC(const std::vector<CallGraphNode *> &SCC);
+  bool runOnSCC(CallGraphSCC &SCC) override;
 
+  using llvm::Pass::doFinalization;
   // doFinalization - Remove now-dead linkonce functions at the end of
   // processing to avoid breaking the SCC traversal.
-  virtual bool doFinalization(CallGraph &CG);
-
+  bool doFinalization(CallGraph &CG) override;
 
   /// This method returns the value specified by the -inline-threshold value,
   /// specified on the command line.  This is typically not directly needed.
   ///
   unsigned getInlineThreshold() const { return InlineThreshold; }
 
+  /// Calculate the inline threshold for given Caller. This threshold is lower
+  /// if the caller is marked with OptimizeForSize and -inline-threshold is not
+  /// given on the comand line. It is higher if the callee is marked with the
+  /// inlinehint attribute.
+  ///
+  unsigned getInlineThreshold(CallSite CS) const;
+
   /// getInlineCost - This method must be implemented by the subclass to
   /// determine the cost of inlining the specified call site.  If the cost
   /// returned is greater than the current inline threshold, the call site is
@@ -56,27 +66,27 @@ struct Inliner : public CallGraphSCCPass {
   ///
   virtual InlineCost getInlineCost(CallSite CS) = 0;
 
-  // getInlineFudgeFactor - Return a > 1.0 factor if the inliner should use a
-  // higher threshold to determine if the function call should be inlined.
+  /// removeDeadFunctions - Remove dead functions.
   ///
-  virtual float getInlineFudgeFactor(CallSite CS) = 0;
+  /// This also includes a hack in the form of the 'AlwaysInlineOnly' flag
+  /// which restricts it to deleting functions with an 'AlwaysInline'
+  /// attribute. This is useful for the InlineAlways pass that only wants to
+  /// deal with that subset of the functions.
+  bool removeDeadFunctions(CallGraph &CG, bool AlwaysInlineOnly = false);
 
-  /// resetCachedCostInfo - erase any cached cost data from the derived class.
-  /// If the derived class has no such data this can be empty.
-  /// 
-  virtual void resetCachedCostInfo(Function* Caller) = 0;
-
-  /// removeDeadFunctions - Remove dead functions that are not included in
-  /// DNR (Do Not Remove) list.
-  bool removeDeadFunctions(CallGraph &CG, 
-                           SmallPtrSet<const Function *, 16> *DNR = NULL);
 private:
   // InlineThreshold - Cache the value here for easy access.
   unsigned InlineThreshold;
 
+  // InsertLifetime - Insert @llvm.lifetime intrinsics.
+  bool InsertLifetime;
+
   /// shouldInline - Return true if the inliner should attempt to
   /// inline at the given CallSite.
   bool shouldInline(CallSite CS);
+
+protected:
+  AssumptionCacheTracker *ACT;
 };
 
 } // End llvm namespace