//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
-#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 {
- 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
/// 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
/// 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