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Internalize PEI. NFC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232722 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2015-03-19 14:09:20 +00:00
parent d30081aaa7
commit 2f90075825
2 changed files with 48 additions and 79 deletions
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49
lib/CodeGen/PrologEpilogInserter.cpp
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@ -16,7 +16,6 @@
//
//===----------------------------------------------------------------------===//
#include "PrologEpilogInserter.h"
#include "llvm/ADT/IndexedMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SetVector.h"
@ -28,6 +27,7 @@
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/RegisterScavenging.h"
#include "llvm/CodeGen/StackProtector.h"
#include "llvm/IR/DiagnosticInfo.h"
@ -48,6 +48,53 @@ using namespace llvm;
#define DEBUG_TYPE "pei"
namespace {
class PEI : public MachineFunctionPass {
public:
static char ID;
PEI() : MachineFunctionPass(ID) {
initializePEIPass(*PassRegistry::getPassRegistry());
}
void getAnalysisUsage(AnalysisUsage &AU) const override;
/// runOnMachineFunction - Insert prolog/epilog code and replace abstract
/// frame indexes with appropriate references.
///
bool runOnMachineFunction(MachineFunction &Fn) override;
private:
RegScavenger *RS;
// MinCSFrameIndex, MaxCSFrameIndex - Keeps the range of callee saved
// stack frame indexes.
unsigned MinCSFrameIndex, MaxCSFrameIndex;
// Entry and return blocks of the current function.
MachineBasicBlock *EntryBlock;
SmallVector<MachineBasicBlock *, 4> ReturnBlocks;
// Flag to control whether to use the register scavenger to resolve
// frame index materialization registers. Set according to
// TRI->requiresFrameIndexScavenging() for the current function.
bool FrameIndexVirtualScavenging;
void calculateSets(MachineFunction &Fn);
void calculateCallsInformation(MachineFunction &Fn);
void calculateCalleeSavedRegisters(MachineFunction &Fn);
void insertCSRSpillsAndRestores(MachineFunction &Fn);
void calculateFrameObjectOffsets(MachineFunction &Fn);
void replaceFrameIndices(MachineFunction &Fn);
void replaceFrameIndices(MachineBasicBlock *BB, MachineFunction &Fn,
int &SPAdj);
void scavengeFrameVirtualRegs(MachineFunction &Fn);
void insertPrologEpilogCode(MachineFunction &Fn);
// Convenience for recognizing return blocks.
bool isReturnBlock(MachineBasicBlock *MBB);
};
} // namespace
char PEI::ID = 0;
char &llvm::PrologEpilogCodeInserterID = PEI::ID;

78
lib/CodeGen/PrologEpilogInserter.h
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@ -1,78 +0,0 @@
//===-- PrologEpilogInserter.h - Prolog/Epilog code insertion -*- C++ -*---===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This pass is responsible for finalizing the functions frame layout, saving
// callee saved registers, and for emitting prolog & epilog code for the
// function.
//
// This pass must be run after register allocation. After this pass is
// executed, it is illegal to construct MO_FrameIndex operands.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_CODEGEN_PROLOGEPILOGINSERTER_H
#define LLVM_LIB_CODEGEN_PROLOGEPILOGINSERTER_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SparseBitVector.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetRegisterInfo.h"
namespace llvm {
class RegScavenger;
class MachineBasicBlock;
class PEI : public MachineFunctionPass {
public:
static char ID;
PEI() : MachineFunctionPass(ID) {
initializePEIPass(*PassRegistry::getPassRegistry());
}
void getAnalysisUsage(AnalysisUsage &AU) const override;
/// runOnMachineFunction - Insert prolog/epilog code and replace abstract
/// frame indexes with appropriate references.
///
bool runOnMachineFunction(MachineFunction &Fn) override;
private:
RegScavenger *RS;
// MinCSFrameIndex, MaxCSFrameIndex - Keeps the range of callee saved
// stack frame indexes.
unsigned MinCSFrameIndex, MaxCSFrameIndex;
// Entry and return blocks of the current function.
MachineBasicBlock* EntryBlock;
SmallVector<MachineBasicBlock*, 4> ReturnBlocks;
// Flag to control whether to use the register scavenger to resolve
// frame index materialization registers. Set according to
// TRI->requiresFrameIndexScavenging() for the curren function.
bool FrameIndexVirtualScavenging;
void calculateSets(MachineFunction &Fn);
void calculateCallsInformation(MachineFunction &Fn);
void calculateCalleeSavedRegisters(MachineFunction &Fn);
void insertCSRSpillsAndRestores(MachineFunction &Fn);
void calculateFrameObjectOffsets(MachineFunction &Fn);
void replaceFrameIndices(MachineFunction &Fn);
void replaceFrameIndices(MachineBasicBlock *BB, MachineFunction &Fn,
int &SPAdj);
void scavengeFrameVirtualRegs(MachineFunction &Fn);
void insertPrologEpilogCode(MachineFunction &Fn);
// Convenience for recognizing return blocks.
bool isReturnBlock(MachineBasicBlock* MBB);
};
} // End llvm namespace
#endif