mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-30 02:32:08 +00:00
120d053e3b
the inliner pass. Patch by Robert Zeh. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45903 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
//===- InlinerPass.h - Code common to all inliners --------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines a simple policy-based bottom-up inliner. This file
|
|
// implements all of the boring mechanics of the bottom-up inlining, while the
|
|
// subclass determines WHAT to inline, which is the much more interesting
|
|
// component.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef INLINER_H
|
|
#define INLINER_H
|
|
|
|
#include "llvm/CallGraphSCCPass.h"
|
|
|
|
namespace llvm {
|
|
class CallSite;
|
|
|
|
/// Inliner - This class contains all of the helper code which is used to
|
|
/// perform the inlining operations that does not depend on the policy.
|
|
///
|
|
struct Inliner : public CallGraphSCCPass {
|
|
explicit Inliner(const void *ID);
|
|
explicit Inliner(const void *ID, int Threshold);
|
|
|
|
/// 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;
|
|
|
|
// Main run interface method, this implements the interface required by the
|
|
// Pass class.
|
|
virtual bool runOnSCC(const std::vector<CallGraphNode *> &SCC);
|
|
|
|
// 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; }
|
|
|
|
/// 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;
|
|
|
|
private:
|
|
// InlineThreshold - Cache the value here for easy access.
|
|
unsigned InlineThreshold;
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|