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 5d00f4215a832198d7eb276e981e3374334228bf..43a0ac8cc1f7399797ade35874309feaa1e62fda 100644 (file)
--- a/include/llvm/Transforms/IPO/InlinerPass.h
+++ b/include/llvm/Transforms/IPO/InlinerPass.h
@@ -17,11 +17,11 @@
 #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 TargetData;
+  class DataLayout;
   class InlineCost;
   template<class PtrType, unsigned SmallSize>
   class SmallPtrSet;
@@ -30,8 +30,8 @@ namespace llvm {
 /// 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
@@ -40,8 +40,9 @@ struct Inliner : public CallGraphSCCPass {
 
   // Main run interface method, this implements the interface required by the
   // Pass class.
-  virtual bool runOnSCC(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);
@@ -51,6 +52,13 @@ struct Inliner : public CallGraphSCCPass {
   ///
   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
@@ -58,24 +66,21 @@ 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);