X86FloatingPoint.cpp File Reference

#include "X86.h"
#include "X86InstrInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Compiler.h"
#include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/STLExtras.h"
#include <algorithm>

Include dependency graph for X86FloatingPoint.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "x86-codegen"
#define	ASSERT_SORTED(TABLE)
Functions
	STATISTIC (NumFXCH,"Number of fxch instructions inserted")
	STATISTIC (NumFP,"Number of floating point instructions")
FunctionPass *	llvm::createX86FloatingPointStackifierPass ()
static unsigned	getFPReg (const MachineOperand &MO)
static bool	TableIsSorted (const TableEntry *Table, unsigned NumEntries)
static int	Lookup (const TableEntry *Table, unsigned N, unsigned Opcode)
static unsigned	getConcreteOpcode (unsigned Opcode)
Variables
static const TableEntry	OpcodeTable []
static const TableEntry	PopTable []
static const TableEntry	ForwardST0Table []
static const TableEntry	ReverseST0Table []
static const TableEntry	ForwardSTiTable []
static const TableEntry	ReverseSTiTable []

---

Define Documentation

#define ASSERT_SORTED

(

TABLE

)

Value:

{ static bool TABLE##Checked = false;                                   \
    if (!TABLE##Checked) {                                                \
       assert(TableIsSorted(TABLE, array_lengthof(TABLE)) &&              \
              "All lookup tables must be sorted for efficient access!");  \
       TABLE##Checked = true;                                             \
    }                                                                     \
  }

Definition at line 327 of file X86FloatingPoint.cpp.

Referenced by getConcreteOpcode().

#define DEBUG_TYPE   "x86-codegen"

Definition at line 31 of file X86FloatingPoint.cpp.

---

Function Documentation

static unsigned getConcreteOpcode

(

unsigned

Opcode

)

[static]

Definition at line 507 of file X86FloatingPoint.cpp.

References llvm::array_lengthof(), ASSERT_SORTED, and Lookup().

static unsigned getFPReg

(

const MachineOperand &

MO

)

[static]

getFPReg - Return the X86::FPx register number for the specified operand. For example, this returns 3 for X86::FP3.

Definition at line 170 of file X86FloatingPoint.cpp.

References llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), and Reg.

static int Lookup	(	const TableEntry *	Table,
		unsigned	N,
		unsigned	Opcode
	)			[static]

Definition at line 317 of file X86FloatingPoint.cpp.

Referenced by getConcreteOpcode(), llvm::ValueMap< ValType, TypeClass, ConstantClass, HasLargeKey >::getOrCreate(), llvm::ConstantStruct::replaceUsesOfWithOnConstant(), and llvm::ConstantArray::replaceUsesOfWithOnConstant().

STATISTIC	(	NumFP	,
		"Number of floating point instructions"
	)

STATISTIC	(	NumFXCH	,
		"Number of fxch instructions inserted"
	)

static bool TableIsSorted	(	const TableEntry *	Table,
		unsigned	NumEntries
	)			[static]

Definition at line 310 of file X86FloatingPoint.cpp.

---

Variable Documentation

const TableEntry ForwardST0Table[] [static]

Initial value:

 {
  { X86::ADD_Fp32  , X86::ADD_FST0r },
  { X86::ADD_Fp64  , X86::ADD_FST0r },
  { X86::ADD_Fp80  , X86::ADD_FST0r },
  { X86::DIV_Fp32  , X86::DIV_FST0r },
  { X86::DIV_Fp64  , X86::DIV_FST0r },
  { X86::DIV_Fp80  , X86::DIV_FST0r },
  { X86::MUL_Fp32  , X86::MUL_FST0r },
  { X86::MUL_Fp64  , X86::MUL_FST0r },
  { X86::MUL_Fp80  , X86::MUL_FST0r },
  { X86::SUB_Fp32  , X86::SUB_FST0r },
  { X86::SUB_Fp64  , X86::SUB_FST0r },
  { X86::SUB_Fp80  , X86::SUB_FST0r },
}

Definition at line 707 of file X86FloatingPoint.cpp.

const TableEntry ForwardSTiTable[] [static]

Initial value:

 {
  { X86::ADD_Fp32  , X86::ADD_FrST0  },   
  { X86::ADD_Fp64  , X86::ADD_FrST0  },   
  { X86::ADD_Fp80  , X86::ADD_FrST0  },   
  { X86::DIV_Fp32  , X86::DIVR_FrST0 },
  { X86::DIV_Fp64  , X86::DIVR_FrST0 },
  { X86::DIV_Fp80  , X86::DIVR_FrST0 },
  { X86::MUL_Fp32  , X86::MUL_FrST0  },   
  { X86::MUL_Fp64  , X86::MUL_FrST0  },   
  { X86::MUL_Fp80  , X86::MUL_FrST0  },   
  { X86::SUB_Fp32  , X86::SUBR_FrST0 },
  { X86::SUB_Fp64  , X86::SUBR_FrST0 },
  { X86::SUB_Fp80  , X86::SUBR_FrST0 },
}

Definition at line 739 of file X86FloatingPoint.cpp.

unsigned from

Definition at line 297 of file X86FloatingPoint.cpp.

char ID [static]

Definition at line 55 of file X86FloatingPoint.cpp.

MachineBasicBlock* MBB

Definition at line 70 of file X86FloatingPoint.cpp.

Referenced by llvm::LiveIntervals::computeNumbering(), llvm::XCoreRegisterInfo::eliminateFrameIndex(), llvm::SPURegisterInfo::eliminateFrameIndex(), llvm::PPCRegisterInfo::eliminateFrameIndex(), llvm::IA64RegisterInfo::eliminateFrameIndex(), llvm::ARMRegisterInfo::eliminateFrameIndex(), llvm::AlphaRegisterInfo::eliminateFrameIndex(), llvm::X86RegisterInfo::emitPrologue(), llvm::SPURegisterInfo::emitPrologue(), llvm::SparcRegisterInfo::emitPrologue(), llvm::PPCRegisterInfo::emitPrologue(), llvm::MipsRegisterInfo::emitPrologue(), llvm::IA64RegisterInfo::emitPrologue(), llvm::ARMRegisterInfo::emitPrologue(), llvm::AlphaRegisterInfo::emitPrologue(), llvm::BasicBlockSDNode::getBasicBlock(), llvm::TargetInstrInfoImpl::GetFunctionSizeInBytes(), llvm::ARMInstrInfo::GetInstSizeInBytes(), llvm::PPCRegisterInfo::lowerCRSpilling(), llvm::PPCRegisterInfo::lowerDynamicAlloc(), llvm::FunctionLoweringInfo::set(), and llvm::SelectionDAGLowering::visitBitTestHeader().

const TableEntry OpcodeTable[] [static]

Definition at line 345 of file X86FloatingPoint.cpp.

const TableEntry PopTable[] [static]

Initial value:

 {
  { X86::ADD_FrST0 , X86::ADD_FPrST0  },

  { X86::DIVR_FrST0, X86::DIVR_FPrST0 },
  { X86::DIV_FrST0 , X86::DIV_FPrST0  },

  { X86::IST_F16m  , X86::IST_FP16m   },
  { X86::IST_F32m  , X86::IST_FP32m   },

  { X86::MUL_FrST0 , X86::MUL_FPrST0  },

  { X86::ST_F32m   , X86::ST_FP32m    },
  { X86::ST_F64m   , X86::ST_FP64m    },
  { X86::ST_Frr    , X86::ST_FPrr     },

  { X86::SUBR_FrST0, X86::SUBR_FPrST0 },
  { X86::SUB_FrST0 , X86::SUB_FPrST0  },

  { X86::UCOM_FIr  , X86::UCOM_FIPr   },

  { X86::UCOM_FPr  , X86::UCOM_FPPr   },
  { X86::UCOM_Fr   , X86::UCOM_FPr    },
}

Definition at line 521 of file X86FloatingPoint.cpp.

unsigned RegMap[8]

Definition at line 72 of file X86FloatingPoint.cpp.

const TableEntry ReverseST0Table[] [static]

Initial value:

 {
  { X86::ADD_Fp32  , X86::ADD_FST0r  },   
  { X86::ADD_Fp64  , X86::ADD_FST0r  },   
  { X86::ADD_Fp80  , X86::ADD_FST0r  },   
  { X86::DIV_Fp32  , X86::DIVR_FST0r },
  { X86::DIV_Fp64  , X86::DIVR_FST0r },
  { X86::DIV_Fp80  , X86::DIVR_FST0r },
  { X86::MUL_Fp32  , X86::MUL_FST0r  },   
  { X86::MUL_Fp64  , X86::MUL_FST0r  },   
  { X86::MUL_Fp80  , X86::MUL_FST0r  },   
  { X86::SUB_Fp32  , X86::SUBR_FST0r },
  { X86::SUB_Fp64  , X86::SUBR_FST0r },
  { X86::SUB_Fp80  , X86::SUBR_FST0r },
}

Definition at line 723 of file X86FloatingPoint.cpp.

const TableEntry ReverseSTiTable[] [static]

Initial value:

 {
  { X86::ADD_Fp32  , X86::ADD_FrST0 },
  { X86::ADD_Fp64  , X86::ADD_FrST0 },
  { X86::ADD_Fp80  , X86::ADD_FrST0 },
  { X86::DIV_Fp32  , X86::DIV_FrST0 },
  { X86::DIV_Fp64  , X86::DIV_FrST0 },
  { X86::DIV_Fp80  , X86::DIV_FrST0 },
  { X86::MUL_Fp32  , X86::MUL_FrST0 },
  { X86::MUL_Fp64  , X86::MUL_FrST0 },
  { X86::MUL_Fp80  , X86::MUL_FrST0 },
  { X86::SUB_Fp32  , X86::SUB_FrST0 },
  { X86::SUB_Fp64  , X86::SUB_FrST0 },
  { X86::SUB_Fp80  , X86::SUB_FrST0 },
}

Definition at line 755 of file X86FloatingPoint.cpp.

unsigned Stack[8]

Definition at line 71 of file X86FloatingPoint.cpp.

unsigned StackTop

Definition at line 73 of file X86FloatingPoint.cpp.

const TargetInstrInfo* TII

Definition at line 69 of file X86FloatingPoint.cpp.

unsigned to

Definition at line 298 of file X86FloatingPoint.cpp.