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Use MachineFrameInfo as base class of UltraSparcFrameInfo, and made

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a major overhaul of this class and how stack frames are managed.

llvm-svn: 1191
This commit is contained in:
Vikram S. Adve 2001-11-08 04:55:13 +00:00
parent d985dbcdd8
commit 1cc04e4908
2 changed files with 144 additions and 59 deletions
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77
lib/Target/Sparc/Sparc.cpp
View File

@ -65,14 +65,6 @@ void AllocateRegisters(Method *M, TargetMachine &target)
}
// Initialize the required area of the stack frame.
static void
InitializeFrameLayout(Method *method, TargetMachine &target)
{
int minFrameSize = ((UltraSparc&) target).getFrameInfo().MinStackFrameSize;
method->getMachineCode().incrementStackSize(minFrameSize);
}
//---------------------------------------------------------------------------
// Function InsertPrologCode
// Function InsertEpilogCode
@ -141,7 +133,7 @@ InsertEpilogCode(Method* method, TargetMachine& target)
static void
InsertPrologEpilog(Method *method, TargetMachine &target)
{
MachineCodeForMethod& mcodeInfo = method->getMachineCode();
MachineCodeForMethod& mcodeInfo = MachineCodeForMethod::get(method);
if (mcodeInfo.isCompiledAsLeafMethod())
return; // nothing to do
@ -160,9 +152,9 @@ InsertPrologEpilog(Method *method, TargetMachine &target)
//---------------------------------------------------------------------------
/*ctor*/
UltraSparcSchedInfo::UltraSparcSchedInfo(const MachineInstrInfo* mii)
: MachineSchedInfo((unsigned int) SPARC_NUM_SCHED_CLASSES,
mii,
UltraSparcSchedInfo::UltraSparcSchedInfo(const TargetMachine& tgt)
: MachineSchedInfo(tgt,
(unsigned int) SPARC_NUM_SCHED_CLASSES,
SparcRUsageDesc,
SparcInstrUsageDeltas,
SparcInstrIssueDeltas,
@ -205,28 +197,42 @@ UltraSparcSchedInfo::initializeResources()
//---------------------------------------------------------------------------
int
UltraSparcFrameInfo::getFirstAutomaticVarOffsetFromFP (const Method* method)
UltraSparcFrameInfo::getFirstAutomaticVarOffset(MachineCodeForMethod& ,
bool& pos) const
{
return StaticStackAreaOffsetFromFP;
pos = false; // static stack area grows downwards
return StaticAreaOffsetFromFP;
}
int
UltraSparcFrameInfo::getRegSpillAreaOffsetFromFP(const Method* method)
UltraSparcFrameInfo::getRegSpillAreaOffset(MachineCodeForMethod& mcInfo,
bool& pos) const
{
unsigned int autoVarsSize = method->getMachineCode().getAutomaticVarsSize();
return StaticStackAreaOffsetFromFP + autoVarsSize;
pos = false; // static stack area grows downwards
unsigned int autoVarsSize = mcInfo.getAutomaticVarsSize();
return StaticAreaOffsetFromFP - autoVarsSize;
}
int
UltraSparcFrameInfo::getFrameSizeBelowDynamicArea(const Method* method)
UltraSparcFrameInfo::getTmpAreaOffset(MachineCodeForMethod& mcInfo,
bool& pos) const
{
unsigned int optArgsSize =
method->getMachineCode().getOptionalOutgoingArgsSize();
pos = false; // static stack area grows downwards
unsigned int autoVarsSize = mcInfo.getAutomaticVarsSize();
unsigned int spillAreaSize = mcInfo.getRegSpillsSize();
return StaticAreaOffsetFromFP - (autoVarsSize + spillAreaSize);
}
int
UltraSparcFrameInfo::getDynamicAreaOffset(MachineCodeForMethod& mcInfo,
bool& pos) const
{
// dynamic stack area grows downwards starting at top of opt-args area
unsigned int optArgsSize = mcInfo.getMaxOptionalArgsSize();
return optArgsSize + FirstOptionalOutgoingArgOffsetFromSP;
}
//---------------------------------------------------------------------------
// class UltraSparcMachine
//
@ -240,10 +246,10 @@ UltraSparcFrameInfo::getFrameSizeBelowDynamicArea(const Method* method)
UltraSparc::UltraSparc()
: TargetMachine("UltraSparc-Native"),
instrInfo(),
schedInfo(&instrInfo),
regInfo( this ),
frameInfo()
instrInfo(*this),
schedInfo(*this),
regInfo(*this),
frameInfo(*this)
{
optSizeForSubWordData = 4;
minMemOpWordSize = 8;
@ -265,29 +271,30 @@ ApplyPeepholeOptimizations(Method *method, TargetMachine &target)
bool
UltraSparc::compileMethod(Method *M)
UltraSparc::compileMethod(Method *method)
{
InitializeFrameLayout(M, *this); // initialize the required area of
// the stack frame
if (SelectInstructionsForMethod(M, *this))
// Construct and initialize the MachineCodeForMethod object for this method.
(void) MachineCodeForMethod::construct(method, *this);
if (SelectInstructionsForMethod(method, *this))
{
cerr << "Instruction selection failed for method " << M->getName()
cerr << "Instruction selection failed for method " << method->getName()
<< "\n\n";
return true;
}
if (ScheduleInstructionsWithSSA(M, *this))
if (ScheduleInstructionsWithSSA(method, *this))
{
cerr << "Instruction scheduling before allocation failed for method "
<< M->getName() << "\n\n";
<< method->getName() << "\n\n";
return true;
}
AllocateRegisters(M, *this); // allocate registers
AllocateRegisters(method, *this); // allocate registers
ApplyPeepholeOptimizations(M, *this); // machine-dependent peephole opts
ApplyPeepholeOptimizations(method, *this); // machine-dependent peephole opts
InsertPrologEpilog(M, *this);
InsertPrologEpilog(method, *this);
return false;
}

126
lib/Target/Sparc/SparcInternals.h
View File

@ -1,9 +1,13 @@
//===-- SparcInternals.h - Header file for Sparc backend ---------*- C++ -*--=//
//
// This file defines stuff that is to be private to the Sparc backend, but is
// shared among different portions of the backend.
//
//===----------------------------------------------------------------------===//
// $Id$ -*- C++ -*--
//***************************************************************************
// File:
// SparcInternals.h
//
// Purpose:
// This file defines stuff that is to be private to the Sparc
// backend, but is shared among different portions of the backend.
//**************************************************************************/
#ifndef SPARC_INTERNALS_H
#define SPARC_INTERNALS_H
@ -12,7 +16,7 @@
#include "SparcRegClassInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/MachineInstrInfo.h"
#include "llvm/Target/MachineFrameInfo.h"
#include "llvm/Target/MachineSchedInfo.h"
#include "llvm/CodeGen/RegClass.h"
#include "llvm/Type.h"
@ -83,7 +87,7 @@ extern const MachineInstrDescriptor SparcMachineInstrDesc[];
class UltraSparcInstrInfo : public MachineInstrInfo {
public:
/*ctor*/ UltraSparcInstrInfo();
/*ctor*/ UltraSparcInstrInfo(const TargetMachine& tgt);
virtual bool hasResultInterlock (MachineOpCode opCode) const
{
@ -109,12 +113,23 @@ public:
Instruction* dest,
vector<MachineInstr*>& minstrVec,
vector<TmpInstruction*>& tempVec) const;
// Create an instruction sequence to copy an integer value `val' from an
// integer to a floating point register `dest'. val must be an integral
// type. dest must be a Float or Double.
// The generated instructions are returned in `minstrVec'.
// Any temp. registers (TmpInstruction) created are returned in `tempVec'.
//
virtual void CreateCodeToCopyIntToFloat(Method* method,
Value* val,
Instruction* dest,
vector<MachineInstr*>& minstrVec,
vector<TmpInstruction*>& tempVec,
TargetMachine& target) const;
};
//----------------------------------------------------------------------------
// class UltraSparcRegInfo
//
@ -260,7 +275,8 @@ class UltraSparcRegInfo : public MachineRegInfo
public:
UltraSparcRegInfo(const UltraSparc *const USI ) : UltraSparcInfo(USI),
UltraSparcRegInfo(const TargetMachine& tgt ) : MachineRegInfo(tgt),
UltraSparcInfo(& (const UltraSparc&) tgt),
NumOfIntArgRegs(6),
NumOfFloatArgRegs(32),
InvalidRegNum(1000),
@ -1131,7 +1147,7 @@ const InstrRUsageDelta SparcInstrUsageDeltas[] = {
class UltraSparcSchedInfo: public MachineSchedInfo {
public:
/*ctor*/ UltraSparcSchedInfo (const MachineInstrInfo* mii);
/*ctor*/ UltraSparcSchedInfo (const TargetMachine& tgt);
/*dtor*/ virtual ~UltraSparcSchedInfo () {}
protected:
virtual void initializeResources ();
@ -1143,21 +1159,84 @@ protected:
//
// Purpose:
// Interface to stack frame layout info for the UltraSPARC.
// Note that there is no machine-independent interface to this information
//---------------------------------------------------------------------------
class UltraSparcFrameInfo: public NonCopyable {
class UltraSparcFrameInfo: public MachineFrameInfo {
public:
/*ctor*/ UltraSparcFrameInfo(const TargetMachine& tgt) : MachineFrameInfo(tgt) {}
public:
int getStackFrameSizeAlignment () const { return StackFrameSizeAlignment;}
int getMinStackFrameSize () const { return MinStackFrameSize; }
int getNumFixedOutgoingArgs () const { return NumFixedOutgoingArgs; }
int getSizeOfEachArgOnStack () const { return SizeOfEachArgOnStack; }
bool argsOnStackHaveFixedSize () const { return true; }
//
// These methods compute offsets using the frame contents for a
// particular method. The frame contents are obtained from the
// MachineCodeInfoForMethod object for the given method.
//
int getFirstIncomingArgOffset (MachineCodeForMethod& mcInfo,
bool& pos) const
{
pos = true; // arguments area grows upwards
return FirstIncomingArgOffsetFromFP;
}
int getFirstOutgoingArgOffset (MachineCodeForMethod& mcInfo,
bool& pos) const
{
pos = true; // arguments area grows upwards
return FirstOutgoingArgOffsetFromSP;
}
int getFirstOptionalOutgoingArgOffset(MachineCodeForMethod& mcInfo,
bool& pos)const
{
pos = true; // arguments area grows upwards
return FirstOptionalOutgoingArgOffsetFromSP;
}
int getFirstAutomaticVarOffset (MachineCodeForMethod& mcInfo,
bool& pos) const;
int getRegSpillAreaOffset (MachineCodeForMethod& mcInfo,
bool& pos) const;
int getTmpAreaOffset (MachineCodeForMethod& mcInfo,
bool& pos) const;
int getDynamicAreaOffset (MachineCodeForMethod& mcInfo,
bool& pos) const;
//
// These methods specify the base register used for each stack area
// (generally FP or SP)
//
virtual int getIncomingArgBaseRegNum() const {
return (int) target.getRegInfo().getFramePointer();
}
virtual int getOutgoingArgBaseRegNum() const {
return (int) target.getRegInfo().getStackPointer();
}
virtual int getOptionalOutgoingArgBaseRegNum() const {
return (int) target.getRegInfo().getStackPointer();
}
virtual int getAutomaticVarBaseRegNum() const {
return (int) target.getRegInfo().getFramePointer();
}
virtual int getRegSpillAreaBaseRegNum() const {
return (int) target.getRegInfo().getFramePointer();
}
virtual int getDynamicAreaBaseRegNum() const {
return (int) target.getRegInfo().getStackPointer();
}
private:
static const int StackFrameSizeAlignment = 16;
static const int MinStackFrameSize = 176;
static const int NumFixedOutgoingArgs = 6;
static const int SizeOfEachArgOnStack = 8;
static const int StaticAreaOffsetFromFP = -1;
static const int FirstIncomingArgOffsetFromFP = 126;
static const int FirstOutgoingArgOffsetFromSP = 128;
static const int FirstOptionalOutgoingArgOffsetFromSP = 176;
static const int StaticStackAreaOffsetFromFP = -1;
static const int FirstIncomingArgOffsetFromFP = 126;
static int getFirstAutomaticVarOffsetFromFP (const Method* method);
static int getRegSpillAreaOffsetFromFP (const Method* method);
static int getFrameSizeBelowDynamicArea (const Method* method);
};
@ -1185,8 +1264,7 @@ public:
virtual const MachineInstrInfo &getInstrInfo() const { return instrInfo; }
virtual const MachineSchedInfo &getSchedInfo() const { return schedInfo; }
virtual const MachineRegInfo &getRegInfo() const { return regInfo; }
const UltraSparcFrameInfo &getFrameInfo() const { return frameInfo; }
virtual const MachineFrameInfo &getFrameInfo() const { return frameInfo; }
// compileMethod - For the sparc, we do instruction selection, followed by
// delay slot scheduling, then register allocation.