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//===-- AMDILISelLowering.h - AMDIL DAG Lowering Interface ------*- 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 the interfaces that AMDIL uses to lower LLVM code into a
// selection DAG.
//
//===----------------------------------------------------------------------===//
#ifndef AMDIL_ISELLOWERING_H_
#define AMDIL_ISELLOWERING_H_
#include "AMDIL.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Target/TargetLowering.h"
namespace llvm
{
namespace AMDILISD
{
enum
{
FIRST_NUMBER = ISD::BUILTIN_OP_END,
CMOVLOG, // 32bit FP Conditional move logical instruction
MAD, // 32bit Fused Multiply Add instruction
VBUILD, // scalar to vector mov instruction
CALL, // Function call based on a single integer
SELECT_CC, // Select the correct conditional instruction
UMUL, // 32bit unsigned multiplication
DIV_INF, // Divide with infinity returned on zero divisor
CMP,
IL_CC_I_GT,
IL_CC_I_LT,
IL_CC_I_GE,
IL_CC_I_LE,
IL_CC_I_EQ,
IL_CC_I_NE,
RET_FLAG,
BRANCH_COND,
LAST_ISD_NUMBER
};
} // AMDILISD
class MachineBasicBlock;
class MachineInstr;
class DebugLoc;
class TargetInstrInfo;
class AMDILTargetLowering : public TargetLowering
{
public:
AMDILTargetLowering(TargetMachine &TM);
virtual SDValue
LowerOperation(SDValue Op, SelectionDAG &DAG) const;
/// computeMaskedBitsForTargetNode - Determine which of
/// the bits specified
/// in Mask are known to be either zero or one and return them in
/// the
/// KnownZero/KnownOne bitsets.
virtual void
computeMaskedBitsForTargetNode(
const SDValue Op,
APInt &KnownZero,
APInt &KnownOne,
const SelectionDAG &DAG,
unsigned Depth = 0
) const;
virtual bool
getTgtMemIntrinsic(IntrinsicInfo &Info,
const CallInst &I, unsigned Intrinsic) const;
virtual const char*
getTargetNodeName(
unsigned Opcode
) const;
// We want to mark f32/f64 floating point values as
// legal
bool
isFPImmLegal(const APFloat &Imm, EVT VT) const;
// We don't want to shrink f64/f32 constants because
// they both take up the same amount of space and
// we don't want to use a f2d instruction.
bool ShouldShrinkFPConstant(EVT VT) const;
/// getFunctionAlignment - Return the Log2 alignment of this
/// function.
virtual unsigned int
getFunctionAlignment(const Function *F) const;
private:
CCAssignFn*
CCAssignFnForNode(unsigned int CC) const;
SDValue LowerCallResult(SDValue Chain,
SDValue InFlag,
CallingConv::ID CallConv,
bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl,
SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
SDValue LowerMemArgument(SDValue Chain,
CallingConv::ID CallConv,
const SmallVectorImpl<ISD::InputArg> &ArgInfo,
DebugLoc dl, SelectionDAG &DAG,
const CCValAssign &VA, MachineFrameInfo *MFI,
unsigned i) const;
SDValue LowerMemOpCallTo(SDValue Chain, SDValue StackPtr,
SDValue Arg,
DebugLoc dl, SelectionDAG &DAG,
const CCValAssign &VA,
ISD::ArgFlagsTy Flags) const;
virtual SDValue
LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
virtual SDValue
LowerCall(SDValue Chain, SDValue Callee,
CallingConv::ID CallConv, bool isVarArg, bool doesNotRet,
bool &isTailCall,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
virtual SDValue
LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
DebugLoc dl, SelectionDAG &DAG) const;
SDValue
LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerJumpTable(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerExternalSymbol(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSREM(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSREM8(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSREM16(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSREM32(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSREM64(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSDIV(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSDIV24(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSDIV32(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSDIV64(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSETCC(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerSIGN_EXTEND_INREG(SDValue Op, SelectionDAG &DAG) const;
EVT
genIntType(uint32_t size = 32, uint32_t numEle = 1) const;
SDValue
LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerBRCOND(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
SDValue
LowerFP_ROUND(SDValue Op, SelectionDAG &DAG) const;
}; // AMDILTargetLowering
} // end namespace llvm
#endif // AMDIL_ISELLOWERING_H_
|
