mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
a937f220e1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91273 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
1.0 KiB
C++
40 lines
1.0 KiB
C++
//===---------------- lib/CodeGen/CalcSpillWeights.h ------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
#ifndef LLVM_CODEGEN_CALCSPILLWEIGHTS_H
|
|
#define LLVM_CODEGEN_CALCSPILLWEIGHTS_H
|
|
|
|
#include "llvm/CodeGen/MachineFunctionPass.h"
|
|
|
|
namespace llvm {
|
|
|
|
class LiveInterval;
|
|
|
|
/// CalculateSpillWeights - Compute spill weights for all virtual register
|
|
/// live intervals.
|
|
class CalculateSpillWeights : public MachineFunctionPass {
|
|
public:
|
|
static char ID;
|
|
|
|
CalculateSpillWeights() : MachineFunctionPass(&ID) {}
|
|
|
|
virtual void getAnalysisUsage(AnalysisUsage &au) const;
|
|
|
|
virtual bool runOnMachineFunction(MachineFunction &fn);
|
|
|
|
private:
|
|
/// Returns true if the given live interval is zero length.
|
|
bool isZeroLengthInterval(LiveInterval *li) const;
|
|
};
|
|
|
|
}
|
|
|
|
#endif // LLVM_CODEGEN_CALCSPILLWEIGHTS_H
|