Move CallGraphSCCPass.h into the Analysis tree; that's where the

[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 b2b772cf0a7cb91a50f9130f6513771a9df4abe3..43a0ac8cc1f7399797ade35874309feaa1e62fda 100644 (file)
--- a/include/llvm/Transforms/IPO/InlinerPass.h
+++ b/include/llvm/Transforms/IPO/InlinerPass.h
@@ -14,19 +14,24 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef INLINER_H
-#define INLINER_H
+#ifndef LLVM_TRANSFORMS_IPO_INLINERPASS_H
+#define LLVM_TRANSFORMS_IPO_INLINERPASS_H
 
-#include "llvm/CallGraphSCCPass.h"
+#include "llvm/Analysis/CallGraphSCCPass.h"
 
 namespace llvm {
   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 does not depend on the policy.
+/// perform the inlining operations that do not depend on the policy.
 ///
 struct Inliner : public CallGraphSCCPass {
-  explicit Inliner(const void *ID);
+  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
@@ -35,28 +40,50 @@ struct Inliner : public CallGraphSCCPass {
 
   // Main run interface method, this implements the interface required by the
   // Pass class.
-  virtual bool runOnSCC(const std::vector<CallGraphNode *> &SCC);
+  virtual bool runOnSCC(CallGraphSCC &SCC);
 
+  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);
 
-
   /// 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
   /// not inlined.
   ///
-  virtual int getInlineCost(CallSite CS) = 0;
+  virtual InlineCost getInlineCost(CallSite CS) = 0;
+
+  /// removeDeadFunctions - Remove dead functions.
+  ///
+  /// 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);
 
 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);
 };
 
 } // End llvm namespace