mirror of
https://github.com/c64scene-ar/llvm-6502.git
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602b0c8c17
naming scheme used in SelectionDAG, where there are multiple kinds of "target" nodes, but "machine" nodes are nodes which represent a MachineInstr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82790 91177308-0d34-0410-b5e6-96231b3b80d8
1570 lines
58 KiB
C++
1570 lines
58 KiB
C++
//===-- ARMISelDAGToDAG.cpp - A dag to dag inst selector for ARM ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines an instruction selector for the ARM target.
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//
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//===----------------------------------------------------------------------===//
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#include "ARM.h"
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#include "ARMAddressingModes.h"
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#include "ARMConstantPoolValue.h"
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#include "ARMISelLowering.h"
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#include "ARMTargetMachine.h"
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#include "llvm/CallingConv.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Function.h"
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#include "llvm/Intrinsics.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/CodeGen/SelectionDAG.h"
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#include "llvm/CodeGen/SelectionDAGISel.h"
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#include "llvm/Target/TargetLowering.h"
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#include "llvm/Target/TargetOptions.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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//===--------------------------------------------------------------------===//
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/// ARMDAGToDAGISel - ARM specific code to select ARM machine
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/// instructions for SelectionDAG operations.
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///
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namespace {
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class ARMDAGToDAGISel : public SelectionDAGISel {
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ARMBaseTargetMachine &TM;
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/// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
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/// make the right decision when generating code for different targets.
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const ARMSubtarget *Subtarget;
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public:
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explicit ARMDAGToDAGISel(ARMBaseTargetMachine &tm)
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: SelectionDAGISel(tm), TM(tm),
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Subtarget(&TM.getSubtarget<ARMSubtarget>()) {
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}
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virtual const char *getPassName() const {
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return "ARM Instruction Selection";
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}
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/// getI32Imm - Return a target constant with the specified value, of type i32.
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inline SDValue getI32Imm(unsigned Imm) {
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return CurDAG->getTargetConstant(Imm, MVT::i32);
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}
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SDNode *Select(SDValue Op);
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virtual void InstructionSelect();
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bool SelectShifterOperandReg(SDValue Op, SDValue N, SDValue &A,
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SDValue &B, SDValue &C);
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bool SelectAddrMode2(SDValue Op, SDValue N, SDValue &Base,
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SDValue &Offset, SDValue &Opc);
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bool SelectAddrMode2Offset(SDValue Op, SDValue N,
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SDValue &Offset, SDValue &Opc);
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bool SelectAddrMode3(SDValue Op, SDValue N, SDValue &Base,
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SDValue &Offset, SDValue &Opc);
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bool SelectAddrMode3Offset(SDValue Op, SDValue N,
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SDValue &Offset, SDValue &Opc);
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bool SelectAddrMode4(SDValue Op, SDValue N, SDValue &Addr,
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SDValue &Mode);
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bool SelectAddrMode5(SDValue Op, SDValue N, SDValue &Base,
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SDValue &Offset);
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bool SelectAddrMode6(SDValue Op, SDValue N, SDValue &Addr, SDValue &Update,
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SDValue &Opc);
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bool SelectAddrModePC(SDValue Op, SDValue N, SDValue &Offset,
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SDValue &Label);
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bool SelectThumbAddrModeRR(SDValue Op, SDValue N, SDValue &Base,
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SDValue &Offset);
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bool SelectThumbAddrModeRI5(SDValue Op, SDValue N, unsigned Scale,
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SDValue &Base, SDValue &OffImm,
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SDValue &Offset);
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bool SelectThumbAddrModeS1(SDValue Op, SDValue N, SDValue &Base,
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SDValue &OffImm, SDValue &Offset);
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bool SelectThumbAddrModeS2(SDValue Op, SDValue N, SDValue &Base,
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SDValue &OffImm, SDValue &Offset);
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bool SelectThumbAddrModeS4(SDValue Op, SDValue N, SDValue &Base,
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SDValue &OffImm, SDValue &Offset);
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bool SelectThumbAddrModeSP(SDValue Op, SDValue N, SDValue &Base,
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SDValue &OffImm);
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bool SelectT2ShifterOperandReg(SDValue Op, SDValue N,
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SDValue &BaseReg, SDValue &Opc);
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bool SelectT2AddrModeImm12(SDValue Op, SDValue N, SDValue &Base,
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SDValue &OffImm);
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bool SelectT2AddrModeImm8(SDValue Op, SDValue N, SDValue &Base,
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SDValue &OffImm);
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bool SelectT2AddrModeImm8Offset(SDValue Op, SDValue N,
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SDValue &OffImm);
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bool SelectT2AddrModeImm8s4(SDValue Op, SDValue N, SDValue &Base,
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SDValue &OffImm);
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bool SelectT2AddrModeSoReg(SDValue Op, SDValue N, SDValue &Base,
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SDValue &OffReg, SDValue &ShImm);
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// Include the pieces autogenerated from the target description.
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#include "ARMGenDAGISel.inc"
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private:
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/// SelectARMIndexedLoad - Indexed (pre/post inc/dec) load matching code for
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/// ARM.
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SDNode *SelectARMIndexedLoad(SDValue Op);
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SDNode *SelectT2IndexedLoad(SDValue Op);
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/// SelectDYN_ALLOC - Select dynamic alloc for Thumb.
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SDNode *SelectDYN_ALLOC(SDValue Op);
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/// SelectInlineAsmMemoryOperand - Implement addressing mode selection for
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/// inline asm expressions.
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virtual bool SelectInlineAsmMemoryOperand(const SDValue &Op,
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char ConstraintCode,
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std::vector<SDValue> &OutOps);
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};
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}
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void ARMDAGToDAGISel::InstructionSelect() {
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DEBUG(BB->dump());
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SelectRoot(*CurDAG);
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CurDAG->RemoveDeadNodes();
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}
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bool ARMDAGToDAGISel::SelectShifterOperandReg(SDValue Op,
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SDValue N,
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SDValue &BaseReg,
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SDValue &ShReg,
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SDValue &Opc) {
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ARM_AM::ShiftOpc ShOpcVal = ARM_AM::getShiftOpcForNode(N);
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// Don't match base register only case. That is matched to a separate
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// lower complexity pattern with explicit register operand.
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if (ShOpcVal == ARM_AM::no_shift) return false;
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BaseReg = N.getOperand(0);
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unsigned ShImmVal = 0;
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if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
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ShReg = CurDAG->getRegister(0, MVT::i32);
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ShImmVal = RHS->getZExtValue() & 31;
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} else {
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ShReg = N.getOperand(1);
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}
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Opc = CurDAG->getTargetConstant(ARM_AM::getSORegOpc(ShOpcVal, ShImmVal),
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MVT::i32);
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return true;
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}
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bool ARMDAGToDAGISel::SelectAddrMode2(SDValue Op, SDValue N,
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SDValue &Base, SDValue &Offset,
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SDValue &Opc) {
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if (N.getOpcode() == ISD::MUL) {
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if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
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// X * [3,5,9] -> X + X * [2,4,8] etc.
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int RHSC = (int)RHS->getZExtValue();
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if (RHSC & 1) {
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RHSC = RHSC & ~1;
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ARM_AM::AddrOpc AddSub = ARM_AM::add;
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if (RHSC < 0) {
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AddSub = ARM_AM::sub;
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RHSC = - RHSC;
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}
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if (isPowerOf2_32(RHSC)) {
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unsigned ShAmt = Log2_32(RHSC);
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Base = Offset = N.getOperand(0);
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM2Opc(AddSub, ShAmt,
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ARM_AM::lsl),
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MVT::i32);
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return true;
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}
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}
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}
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}
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if (N.getOpcode() != ISD::ADD && N.getOpcode() != ISD::SUB) {
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Base = N;
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if (N.getOpcode() == ISD::FrameIndex) {
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int FI = cast<FrameIndexSDNode>(N)->getIndex();
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Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
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} else if (N.getOpcode() == ARMISD::Wrapper) {
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Base = N.getOperand(0);
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}
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Offset = CurDAG->getRegister(0, MVT::i32);
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM2Opc(ARM_AM::add, 0,
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ARM_AM::no_shift),
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MVT::i32);
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return true;
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}
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// Match simple R +/- imm12 operands.
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if (N.getOpcode() == ISD::ADD)
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if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
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int RHSC = (int)RHS->getZExtValue();
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if ((RHSC >= 0 && RHSC < 0x1000) ||
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(RHSC < 0 && RHSC > -0x1000)) { // 12 bits.
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Base = N.getOperand(0);
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if (Base.getOpcode() == ISD::FrameIndex) {
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int FI = cast<FrameIndexSDNode>(Base)->getIndex();
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Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
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}
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Offset = CurDAG->getRegister(0, MVT::i32);
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ARM_AM::AddrOpc AddSub = ARM_AM::add;
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if (RHSC < 0) {
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AddSub = ARM_AM::sub;
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RHSC = - RHSC;
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}
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM2Opc(AddSub, RHSC,
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ARM_AM::no_shift),
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MVT::i32);
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return true;
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}
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}
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// Otherwise this is R +/- [possibly shifted] R
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ARM_AM::AddrOpc AddSub = N.getOpcode() == ISD::ADD ? ARM_AM::add:ARM_AM::sub;
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ARM_AM::ShiftOpc ShOpcVal = ARM_AM::getShiftOpcForNode(N.getOperand(1));
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unsigned ShAmt = 0;
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Base = N.getOperand(0);
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Offset = N.getOperand(1);
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if (ShOpcVal != ARM_AM::no_shift) {
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// Check to see if the RHS of the shift is a constant, if not, we can't fold
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// it.
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if (ConstantSDNode *Sh =
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dyn_cast<ConstantSDNode>(N.getOperand(1).getOperand(1))) {
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ShAmt = Sh->getZExtValue();
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Offset = N.getOperand(1).getOperand(0);
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} else {
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ShOpcVal = ARM_AM::no_shift;
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}
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}
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// Try matching (R shl C) + (R).
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if (N.getOpcode() == ISD::ADD && ShOpcVal == ARM_AM::no_shift) {
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ShOpcVal = ARM_AM::getShiftOpcForNode(N.getOperand(0));
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if (ShOpcVal != ARM_AM::no_shift) {
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// Check to see if the RHS of the shift is a constant, if not, we can't
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// fold it.
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if (ConstantSDNode *Sh =
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dyn_cast<ConstantSDNode>(N.getOperand(0).getOperand(1))) {
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ShAmt = Sh->getZExtValue();
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Offset = N.getOperand(0).getOperand(0);
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Base = N.getOperand(1);
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} else {
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ShOpcVal = ARM_AM::no_shift;
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}
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}
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}
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM2Opc(AddSub, ShAmt, ShOpcVal),
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MVT::i32);
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return true;
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}
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bool ARMDAGToDAGISel::SelectAddrMode2Offset(SDValue Op, SDValue N,
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SDValue &Offset, SDValue &Opc) {
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unsigned Opcode = Op.getOpcode();
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ISD::MemIndexedMode AM = (Opcode == ISD::LOAD)
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? cast<LoadSDNode>(Op)->getAddressingMode()
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: cast<StoreSDNode>(Op)->getAddressingMode();
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ARM_AM::AddrOpc AddSub = (AM == ISD::PRE_INC || AM == ISD::POST_INC)
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? ARM_AM::add : ARM_AM::sub;
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if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N)) {
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int Val = (int)C->getZExtValue();
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if (Val >= 0 && Val < 0x1000) { // 12 bits.
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Offset = CurDAG->getRegister(0, MVT::i32);
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM2Opc(AddSub, Val,
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ARM_AM::no_shift),
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MVT::i32);
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return true;
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}
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}
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Offset = N;
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ARM_AM::ShiftOpc ShOpcVal = ARM_AM::getShiftOpcForNode(N);
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unsigned ShAmt = 0;
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if (ShOpcVal != ARM_AM::no_shift) {
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// Check to see if the RHS of the shift is a constant, if not, we can't fold
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// it.
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if (ConstantSDNode *Sh = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
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ShAmt = Sh->getZExtValue();
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Offset = N.getOperand(0);
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} else {
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ShOpcVal = ARM_AM::no_shift;
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}
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}
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM2Opc(AddSub, ShAmt, ShOpcVal),
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MVT::i32);
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return true;
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}
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bool ARMDAGToDAGISel::SelectAddrMode3(SDValue Op, SDValue N,
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SDValue &Base, SDValue &Offset,
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SDValue &Opc) {
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if (N.getOpcode() == ISD::SUB) {
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// X - C is canonicalize to X + -C, no need to handle it here.
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Base = N.getOperand(0);
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Offset = N.getOperand(1);
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM3Opc(ARM_AM::sub, 0),MVT::i32);
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return true;
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}
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if (N.getOpcode() != ISD::ADD) {
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Base = N;
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if (N.getOpcode() == ISD::FrameIndex) {
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int FI = cast<FrameIndexSDNode>(N)->getIndex();
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Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
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}
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Offset = CurDAG->getRegister(0, MVT::i32);
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM3Opc(ARM_AM::add, 0),MVT::i32);
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return true;
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}
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// If the RHS is +/- imm8, fold into addr mode.
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if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
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int RHSC = (int)RHS->getZExtValue();
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if ((RHSC >= 0 && RHSC < 256) ||
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(RHSC < 0 && RHSC > -256)) { // note -256 itself isn't allowed.
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Base = N.getOperand(0);
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if (Base.getOpcode() == ISD::FrameIndex) {
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int FI = cast<FrameIndexSDNode>(Base)->getIndex();
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Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
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}
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Offset = CurDAG->getRegister(0, MVT::i32);
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ARM_AM::AddrOpc AddSub = ARM_AM::add;
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if (RHSC < 0) {
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AddSub = ARM_AM::sub;
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RHSC = - RHSC;
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}
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM3Opc(AddSub, RHSC),MVT::i32);
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return true;
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}
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}
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Base = N.getOperand(0);
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Offset = N.getOperand(1);
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM3Opc(ARM_AM::add, 0), MVT::i32);
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return true;
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}
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bool ARMDAGToDAGISel::SelectAddrMode3Offset(SDValue Op, SDValue N,
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SDValue &Offset, SDValue &Opc) {
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unsigned Opcode = Op.getOpcode();
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ISD::MemIndexedMode AM = (Opcode == ISD::LOAD)
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? cast<LoadSDNode>(Op)->getAddressingMode()
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: cast<StoreSDNode>(Op)->getAddressingMode();
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ARM_AM::AddrOpc AddSub = (AM == ISD::PRE_INC || AM == ISD::POST_INC)
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? ARM_AM::add : ARM_AM::sub;
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if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(N)) {
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int Val = (int)C->getZExtValue();
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if (Val >= 0 && Val < 256) {
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Offset = CurDAG->getRegister(0, MVT::i32);
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM3Opc(AddSub, Val), MVT::i32);
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return true;
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}
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}
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Offset = N;
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Opc = CurDAG->getTargetConstant(ARM_AM::getAM3Opc(AddSub, 0), MVT::i32);
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return true;
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}
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bool ARMDAGToDAGISel::SelectAddrMode4(SDValue Op, SDValue N,
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SDValue &Addr, SDValue &Mode) {
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Addr = N;
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Mode = CurDAG->getTargetConstant(0, MVT::i32);
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return true;
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}
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bool ARMDAGToDAGISel::SelectAddrMode5(SDValue Op, SDValue N,
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SDValue &Base, SDValue &Offset) {
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if (N.getOpcode() != ISD::ADD) {
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Base = N;
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if (N.getOpcode() == ISD::FrameIndex) {
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int FI = cast<FrameIndexSDNode>(N)->getIndex();
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Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
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} else if (N.getOpcode() == ARMISD::Wrapper) {
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Base = N.getOperand(0);
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}
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Offset = CurDAG->getTargetConstant(ARM_AM::getAM5Opc(ARM_AM::add, 0),
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MVT::i32);
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return true;
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}
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// If the RHS is +/- imm8, fold into addr mode.
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if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
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int RHSC = (int)RHS->getZExtValue();
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if ((RHSC & 3) == 0) { // The constant is implicitly multiplied by 4.
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RHSC >>= 2;
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if ((RHSC >= 0 && RHSC < 256) ||
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(RHSC < 0 && RHSC > -256)) { // note -256 itself isn't allowed.
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Base = N.getOperand(0);
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if (Base.getOpcode() == ISD::FrameIndex) {
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int FI = cast<FrameIndexSDNode>(Base)->getIndex();
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Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
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}
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ARM_AM::AddrOpc AddSub = ARM_AM::add;
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if (RHSC < 0) {
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AddSub = ARM_AM::sub;
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RHSC = - RHSC;
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}
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Offset = CurDAG->getTargetConstant(ARM_AM::getAM5Opc(AddSub, RHSC),
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MVT::i32);
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return true;
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}
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}
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}
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Base = N;
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Offset = CurDAG->getTargetConstant(ARM_AM::getAM5Opc(ARM_AM::add, 0),
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MVT::i32);
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return true;
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}
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bool ARMDAGToDAGISel::SelectAddrMode6(SDValue Op, SDValue N,
|
|
SDValue &Addr, SDValue &Update,
|
|
SDValue &Opc) {
|
|
Addr = N;
|
|
// The optional writeback is handled in ARMLoadStoreOpt.
|
|
Update = CurDAG->getRegister(0, MVT::i32);
|
|
Opc = CurDAG->getTargetConstant(ARM_AM::getAM6Opc(false), MVT::i32);
|
|
return true;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectAddrModePC(SDValue Op, SDValue N,
|
|
SDValue &Offset, SDValue &Label) {
|
|
if (N.getOpcode() == ARMISD::PIC_ADD && N.hasOneUse()) {
|
|
Offset = N.getOperand(0);
|
|
SDValue N1 = N.getOperand(1);
|
|
Label = CurDAG->getTargetConstant(cast<ConstantSDNode>(N1)->getZExtValue(),
|
|
MVT::i32);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectThumbAddrModeRR(SDValue Op, SDValue N,
|
|
SDValue &Base, SDValue &Offset){
|
|
// FIXME dl should come from the parent load or store, not the address
|
|
DebugLoc dl = Op.getDebugLoc();
|
|
if (N.getOpcode() != ISD::ADD) {
|
|
ConstantSDNode *NC = dyn_cast<ConstantSDNode>(N);
|
|
if (!NC || NC->getZExtValue() != 0)
|
|
return false;
|
|
|
|
Base = Offset = N;
|
|
return true;
|
|
}
|
|
|
|
Base = N.getOperand(0);
|
|
Offset = N.getOperand(1);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ARMDAGToDAGISel::SelectThumbAddrModeRI5(SDValue Op, SDValue N,
|
|
unsigned Scale, SDValue &Base,
|
|
SDValue &OffImm, SDValue &Offset) {
|
|
if (Scale == 4) {
|
|
SDValue TmpBase, TmpOffImm;
|
|
if (SelectThumbAddrModeSP(Op, N, TmpBase, TmpOffImm))
|
|
return false; // We want to select tLDRspi / tSTRspi instead.
|
|
if (N.getOpcode() == ARMISD::Wrapper &&
|
|
N.getOperand(0).getOpcode() == ISD::TargetConstantPool)
|
|
return false; // We want to select tLDRpci instead.
|
|
}
|
|
|
|
if (N.getOpcode() != ISD::ADD) {
|
|
Base = (N.getOpcode() == ARMISD::Wrapper) ? N.getOperand(0) : N;
|
|
Offset = CurDAG->getRegister(0, MVT::i32);
|
|
OffImm = CurDAG->getTargetConstant(0, MVT::i32);
|
|
return true;
|
|
}
|
|
|
|
// Thumb does not have [sp, r] address mode.
|
|
RegisterSDNode *LHSR = dyn_cast<RegisterSDNode>(N.getOperand(0));
|
|
RegisterSDNode *RHSR = dyn_cast<RegisterSDNode>(N.getOperand(1));
|
|
if ((LHSR && LHSR->getReg() == ARM::SP) ||
|
|
(RHSR && RHSR->getReg() == ARM::SP)) {
|
|
Base = N;
|
|
Offset = CurDAG->getRegister(0, MVT::i32);
|
|
OffImm = CurDAG->getTargetConstant(0, MVT::i32);
|
|
return true;
|
|
}
|
|
|
|
// If the RHS is + imm5 * scale, fold into addr mode.
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
|
|
int RHSC = (int)RHS->getZExtValue();
|
|
if ((RHSC & (Scale-1)) == 0) { // The constant is implicitly multiplied.
|
|
RHSC /= Scale;
|
|
if (RHSC >= 0 && RHSC < 32) {
|
|
Base = N.getOperand(0);
|
|
Offset = CurDAG->getRegister(0, MVT::i32);
|
|
OffImm = CurDAG->getTargetConstant(RHSC, MVT::i32);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
Base = N.getOperand(0);
|
|
Offset = N.getOperand(1);
|
|
OffImm = CurDAG->getTargetConstant(0, MVT::i32);
|
|
return true;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectThumbAddrModeS1(SDValue Op, SDValue N,
|
|
SDValue &Base, SDValue &OffImm,
|
|
SDValue &Offset) {
|
|
return SelectThumbAddrModeRI5(Op, N, 1, Base, OffImm, Offset);
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectThumbAddrModeS2(SDValue Op, SDValue N,
|
|
SDValue &Base, SDValue &OffImm,
|
|
SDValue &Offset) {
|
|
return SelectThumbAddrModeRI5(Op, N, 2, Base, OffImm, Offset);
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectThumbAddrModeS4(SDValue Op, SDValue N,
|
|
SDValue &Base, SDValue &OffImm,
|
|
SDValue &Offset) {
|
|
return SelectThumbAddrModeRI5(Op, N, 4, Base, OffImm, Offset);
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectThumbAddrModeSP(SDValue Op, SDValue N,
|
|
SDValue &Base, SDValue &OffImm) {
|
|
if (N.getOpcode() == ISD::FrameIndex) {
|
|
int FI = cast<FrameIndexSDNode>(N)->getIndex();
|
|
Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
|
|
OffImm = CurDAG->getTargetConstant(0, MVT::i32);
|
|
return true;
|
|
}
|
|
|
|
if (N.getOpcode() != ISD::ADD)
|
|
return false;
|
|
|
|
RegisterSDNode *LHSR = dyn_cast<RegisterSDNode>(N.getOperand(0));
|
|
if (N.getOperand(0).getOpcode() == ISD::FrameIndex ||
|
|
(LHSR && LHSR->getReg() == ARM::SP)) {
|
|
// If the RHS is + imm8 * scale, fold into addr mode.
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
|
|
int RHSC = (int)RHS->getZExtValue();
|
|
if ((RHSC & 3) == 0) { // The constant is implicitly multiplied.
|
|
RHSC >>= 2;
|
|
if (RHSC >= 0 && RHSC < 256) {
|
|
Base = N.getOperand(0);
|
|
if (Base.getOpcode() == ISD::FrameIndex) {
|
|
int FI = cast<FrameIndexSDNode>(Base)->getIndex();
|
|
Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
|
|
}
|
|
OffImm = CurDAG->getTargetConstant(RHSC, MVT::i32);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectT2ShifterOperandReg(SDValue Op, SDValue N,
|
|
SDValue &BaseReg,
|
|
SDValue &Opc) {
|
|
ARM_AM::ShiftOpc ShOpcVal = ARM_AM::getShiftOpcForNode(N);
|
|
|
|
// Don't match base register only case. That is matched to a separate
|
|
// lower complexity pattern with explicit register operand.
|
|
if (ShOpcVal == ARM_AM::no_shift) return false;
|
|
|
|
BaseReg = N.getOperand(0);
|
|
unsigned ShImmVal = 0;
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
|
|
ShImmVal = RHS->getZExtValue() & 31;
|
|
Opc = getI32Imm(ARM_AM::getSORegOpc(ShOpcVal, ShImmVal));
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectT2AddrModeImm12(SDValue Op, SDValue N,
|
|
SDValue &Base, SDValue &OffImm) {
|
|
// Match simple R + imm12 operands.
|
|
|
|
// Base only.
|
|
if (N.getOpcode() != ISD::ADD && N.getOpcode() != ISD::SUB) {
|
|
if (N.getOpcode() == ISD::FrameIndex) {
|
|
// Match frame index...
|
|
int FI = cast<FrameIndexSDNode>(N)->getIndex();
|
|
Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
|
|
OffImm = CurDAG->getTargetConstant(0, MVT::i32);
|
|
return true;
|
|
} else if (N.getOpcode() == ARMISD::Wrapper) {
|
|
Base = N.getOperand(0);
|
|
if (Base.getOpcode() == ISD::TargetConstantPool)
|
|
return false; // We want to select t2LDRpci instead.
|
|
} else
|
|
Base = N;
|
|
OffImm = CurDAG->getTargetConstant(0, MVT::i32);
|
|
return true;
|
|
}
|
|
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
|
|
if (SelectT2AddrModeImm8(Op, N, Base, OffImm))
|
|
// Let t2LDRi8 handle (R - imm8).
|
|
return false;
|
|
|
|
int RHSC = (int)RHS->getZExtValue();
|
|
if (N.getOpcode() == ISD::SUB)
|
|
RHSC = -RHSC;
|
|
|
|
if (RHSC >= 0 && RHSC < 0x1000) { // 12 bits (unsigned)
|
|
Base = N.getOperand(0);
|
|
if (Base.getOpcode() == ISD::FrameIndex) {
|
|
int FI = cast<FrameIndexSDNode>(Base)->getIndex();
|
|
Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
|
|
}
|
|
OffImm = CurDAG->getTargetConstant(RHSC, MVT::i32);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Base only.
|
|
Base = N;
|
|
OffImm = CurDAG->getTargetConstant(0, MVT::i32);
|
|
return true;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectT2AddrModeImm8(SDValue Op, SDValue N,
|
|
SDValue &Base, SDValue &OffImm) {
|
|
// Match simple R - imm8 operands.
|
|
if (N.getOpcode() == ISD::ADD || N.getOpcode() == ISD::SUB) {
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
|
|
int RHSC = (int)RHS->getSExtValue();
|
|
if (N.getOpcode() == ISD::SUB)
|
|
RHSC = -RHSC;
|
|
|
|
if ((RHSC >= -255) && (RHSC < 0)) { // 8 bits (always negative)
|
|
Base = N.getOperand(0);
|
|
if (Base.getOpcode() == ISD::FrameIndex) {
|
|
int FI = cast<FrameIndexSDNode>(Base)->getIndex();
|
|
Base = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
|
|
}
|
|
OffImm = CurDAG->getTargetConstant(RHSC, MVT::i32);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectT2AddrModeImm8Offset(SDValue Op, SDValue N,
|
|
SDValue &OffImm){
|
|
unsigned Opcode = Op.getOpcode();
|
|
ISD::MemIndexedMode AM = (Opcode == ISD::LOAD)
|
|
? cast<LoadSDNode>(Op)->getAddressingMode()
|
|
: cast<StoreSDNode>(Op)->getAddressingMode();
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N)) {
|
|
int RHSC = (int)RHS->getZExtValue();
|
|
if (RHSC >= 0 && RHSC < 0x100) { // 8 bits.
|
|
OffImm = ((AM == ISD::PRE_INC) || (AM == ISD::POST_INC))
|
|
? CurDAG->getTargetConstant(RHSC, MVT::i32)
|
|
: CurDAG->getTargetConstant(-RHSC, MVT::i32);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectT2AddrModeImm8s4(SDValue Op, SDValue N,
|
|
SDValue &Base, SDValue &OffImm) {
|
|
if (N.getOpcode() == ISD::ADD) {
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
|
|
int RHSC = (int)RHS->getZExtValue();
|
|
if (((RHSC & 0x3) == 0) &&
|
|
((RHSC >= 0 && RHSC < 0x400) || (RHSC < 0 && RHSC > -0x400))) { // 8 bits.
|
|
Base = N.getOperand(0);
|
|
OffImm = CurDAG->getTargetConstant(RHSC, MVT::i32);
|
|
return true;
|
|
}
|
|
}
|
|
} else if (N.getOpcode() == ISD::SUB) {
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
|
|
int RHSC = (int)RHS->getZExtValue();
|
|
if (((RHSC & 0x3) == 0) && (RHSC >= 0 && RHSC < 0x400)) { // 8 bits.
|
|
Base = N.getOperand(0);
|
|
OffImm = CurDAG->getTargetConstant(-RHSC, MVT::i32);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::SelectT2AddrModeSoReg(SDValue Op, SDValue N,
|
|
SDValue &Base,
|
|
SDValue &OffReg, SDValue &ShImm) {
|
|
// (R - imm8) should be handled by t2LDRi8. The rest are handled by t2LDRi12.
|
|
if (N.getOpcode() != ISD::ADD)
|
|
return false;
|
|
|
|
// Leave (R + imm12) for t2LDRi12, (R - imm8) for t2LDRi8.
|
|
if (ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N.getOperand(1))) {
|
|
int RHSC = (int)RHS->getZExtValue();
|
|
if (RHSC >= 0 && RHSC < 0x1000) // 12 bits (unsigned)
|
|
return false;
|
|
else if (RHSC < 0 && RHSC >= -255) // 8 bits
|
|
return false;
|
|
}
|
|
|
|
// Look for (R + R) or (R + (R << [1,2,3])).
|
|
unsigned ShAmt = 0;
|
|
Base = N.getOperand(0);
|
|
OffReg = N.getOperand(1);
|
|
|
|
// Swap if it is ((R << c) + R).
|
|
ARM_AM::ShiftOpc ShOpcVal = ARM_AM::getShiftOpcForNode(OffReg);
|
|
if (ShOpcVal != ARM_AM::lsl) {
|
|
ShOpcVal = ARM_AM::getShiftOpcForNode(Base);
|
|
if (ShOpcVal == ARM_AM::lsl)
|
|
std::swap(Base, OffReg);
|
|
}
|
|
|
|
if (ShOpcVal == ARM_AM::lsl) {
|
|
// Check to see if the RHS of the shift is a constant, if not, we can't fold
|
|
// it.
|
|
if (ConstantSDNode *Sh = dyn_cast<ConstantSDNode>(OffReg.getOperand(1))) {
|
|
ShAmt = Sh->getZExtValue();
|
|
if (ShAmt >= 4) {
|
|
ShAmt = 0;
|
|
ShOpcVal = ARM_AM::no_shift;
|
|
} else
|
|
OffReg = OffReg.getOperand(0);
|
|
} else {
|
|
ShOpcVal = ARM_AM::no_shift;
|
|
}
|
|
}
|
|
|
|
ShImm = CurDAG->getTargetConstant(ShAmt, MVT::i32);
|
|
|
|
return true;
|
|
}
|
|
|
|
//===--------------------------------------------------------------------===//
|
|
|
|
/// getAL - Returns a ARMCC::AL immediate node.
|
|
static inline SDValue getAL(SelectionDAG *CurDAG) {
|
|
return CurDAG->getTargetConstant((uint64_t)ARMCC::AL, MVT::i32);
|
|
}
|
|
|
|
SDNode *ARMDAGToDAGISel::SelectARMIndexedLoad(SDValue Op) {
|
|
LoadSDNode *LD = cast<LoadSDNode>(Op);
|
|
ISD::MemIndexedMode AM = LD->getAddressingMode();
|
|
if (AM == ISD::UNINDEXED)
|
|
return NULL;
|
|
|
|
EVT LoadedVT = LD->getMemoryVT();
|
|
SDValue Offset, AMOpc;
|
|
bool isPre = (AM == ISD::PRE_INC) || (AM == ISD::PRE_DEC);
|
|
unsigned Opcode = 0;
|
|
bool Match = false;
|
|
if (LoadedVT == MVT::i32 &&
|
|
SelectAddrMode2Offset(Op, LD->getOffset(), Offset, AMOpc)) {
|
|
Opcode = isPre ? ARM::LDR_PRE : ARM::LDR_POST;
|
|
Match = true;
|
|
} else if (LoadedVT == MVT::i16 &&
|
|
SelectAddrMode3Offset(Op, LD->getOffset(), Offset, AMOpc)) {
|
|
Match = true;
|
|
Opcode = (LD->getExtensionType() == ISD::SEXTLOAD)
|
|
? (isPre ? ARM::LDRSH_PRE : ARM::LDRSH_POST)
|
|
: (isPre ? ARM::LDRH_PRE : ARM::LDRH_POST);
|
|
} else if (LoadedVT == MVT::i8 || LoadedVT == MVT::i1) {
|
|
if (LD->getExtensionType() == ISD::SEXTLOAD) {
|
|
if (SelectAddrMode3Offset(Op, LD->getOffset(), Offset, AMOpc)) {
|
|
Match = true;
|
|
Opcode = isPre ? ARM::LDRSB_PRE : ARM::LDRSB_POST;
|
|
}
|
|
} else {
|
|
if (SelectAddrMode2Offset(Op, LD->getOffset(), Offset, AMOpc)) {
|
|
Match = true;
|
|
Opcode = isPre ? ARM::LDRB_PRE : ARM::LDRB_POST;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Match) {
|
|
SDValue Chain = LD->getChain();
|
|
SDValue Base = LD->getBasePtr();
|
|
SDValue Ops[]= { Base, Offset, AMOpc, getAL(CurDAG),
|
|
CurDAG->getRegister(0, MVT::i32), Chain };
|
|
return CurDAG->getMachineNode(Opcode, Op.getDebugLoc(), MVT::i32, MVT::i32,
|
|
MVT::Other, Ops, 6);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
SDNode *ARMDAGToDAGISel::SelectT2IndexedLoad(SDValue Op) {
|
|
LoadSDNode *LD = cast<LoadSDNode>(Op);
|
|
ISD::MemIndexedMode AM = LD->getAddressingMode();
|
|
if (AM == ISD::UNINDEXED)
|
|
return NULL;
|
|
|
|
EVT LoadedVT = LD->getMemoryVT();
|
|
bool isSExtLd = LD->getExtensionType() == ISD::SEXTLOAD;
|
|
SDValue Offset;
|
|
bool isPre = (AM == ISD::PRE_INC) || (AM == ISD::PRE_DEC);
|
|
unsigned Opcode = 0;
|
|
bool Match = false;
|
|
if (SelectT2AddrModeImm8Offset(Op, LD->getOffset(), Offset)) {
|
|
switch (LoadedVT.getSimpleVT().SimpleTy) {
|
|
case MVT::i32:
|
|
Opcode = isPre ? ARM::t2LDR_PRE : ARM::t2LDR_POST;
|
|
break;
|
|
case MVT::i16:
|
|
if (isSExtLd)
|
|
Opcode = isPre ? ARM::t2LDRSH_PRE : ARM::t2LDRSH_POST;
|
|
else
|
|
Opcode = isPre ? ARM::t2LDRH_PRE : ARM::t2LDRH_POST;
|
|
break;
|
|
case MVT::i8:
|
|
case MVT::i1:
|
|
if (isSExtLd)
|
|
Opcode = isPre ? ARM::t2LDRSB_PRE : ARM::t2LDRSB_POST;
|
|
else
|
|
Opcode = isPre ? ARM::t2LDRB_PRE : ARM::t2LDRB_POST;
|
|
break;
|
|
default:
|
|
return NULL;
|
|
}
|
|
Match = true;
|
|
}
|
|
|
|
if (Match) {
|
|
SDValue Chain = LD->getChain();
|
|
SDValue Base = LD->getBasePtr();
|
|
SDValue Ops[]= { Base, Offset, getAL(CurDAG),
|
|
CurDAG->getRegister(0, MVT::i32), Chain };
|
|
return CurDAG->getMachineNode(Opcode, Op.getDebugLoc(), MVT::i32, MVT::i32,
|
|
MVT::Other, Ops, 5);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
SDNode *ARMDAGToDAGISel::SelectDYN_ALLOC(SDValue Op) {
|
|
SDNode *N = Op.getNode();
|
|
DebugLoc dl = N->getDebugLoc();
|
|
EVT VT = Op.getValueType();
|
|
SDValue Chain = Op.getOperand(0);
|
|
SDValue Size = Op.getOperand(1);
|
|
SDValue Align = Op.getOperand(2);
|
|
SDValue SP = CurDAG->getRegister(ARM::SP, MVT::i32);
|
|
int32_t AlignVal = cast<ConstantSDNode>(Align)->getSExtValue();
|
|
if (AlignVal < 0)
|
|
// We need to align the stack. Use Thumb1 tAND which is the only thumb
|
|
// instruction that can read and write SP. This matches to a pseudo
|
|
// instruction that has a chain to ensure the result is written back to
|
|
// the stack pointer.
|
|
SP = SDValue(CurDAG->getMachineNode(ARM::tANDsp, dl, VT, SP, Align), 0);
|
|
|
|
bool isC = isa<ConstantSDNode>(Size);
|
|
uint32_t C = isC ? cast<ConstantSDNode>(Size)->getZExtValue() : ~0UL;
|
|
// Handle the most common case for both Thumb1 and Thumb2:
|
|
// tSUBspi - immediate is between 0 ... 508 inclusive.
|
|
if (C <= 508 && ((C & 3) == 0))
|
|
// FIXME: tSUBspi encode scale 4 implicitly.
|
|
return CurDAG->SelectNodeTo(N, ARM::tSUBspi_, VT, MVT::Other, SP,
|
|
CurDAG->getTargetConstant(C/4, MVT::i32),
|
|
Chain);
|
|
|
|
if (Subtarget->isThumb1Only()) {
|
|
// Use tADDspr since Thumb1 does not have a sub r, sp, r. ARMISelLowering
|
|
// should have negated the size operand already. FIXME: We can't insert
|
|
// new target independent node at this stage so we are forced to negate
|
|
// it earlier. Is there a better solution?
|
|
return CurDAG->SelectNodeTo(N, ARM::tADDspr_, VT, MVT::Other, SP, Size,
|
|
Chain);
|
|
} else if (Subtarget->isThumb2()) {
|
|
if (isC && Predicate_t2_so_imm(Size.getNode())) {
|
|
// t2SUBrSPi
|
|
SDValue Ops[] = { SP, CurDAG->getTargetConstant(C, MVT::i32), Chain };
|
|
return CurDAG->SelectNodeTo(N, ARM::t2SUBrSPi_, VT, MVT::Other, Ops, 3);
|
|
} else if (isC && Predicate_imm0_4095(Size.getNode())) {
|
|
// t2SUBrSPi12
|
|
SDValue Ops[] = { SP, CurDAG->getTargetConstant(C, MVT::i32), Chain };
|
|
return CurDAG->SelectNodeTo(N, ARM::t2SUBrSPi12_, VT, MVT::Other, Ops, 3);
|
|
} else {
|
|
// t2SUBrSPs
|
|
SDValue Ops[] = { SP, Size,
|
|
getI32Imm(ARM_AM::getSORegOpc(ARM_AM::lsl,0)), Chain };
|
|
return CurDAG->SelectNodeTo(N, ARM::t2SUBrSPs_, VT, MVT::Other, Ops, 4);
|
|
}
|
|
}
|
|
|
|
// FIXME: Add ADD / SUB sp instructions for ARM.
|
|
return 0;
|
|
}
|
|
|
|
SDNode *ARMDAGToDAGISel::Select(SDValue Op) {
|
|
SDNode *N = Op.getNode();
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
if (N->isMachineOpcode())
|
|
return NULL; // Already selected.
|
|
|
|
switch (N->getOpcode()) {
|
|
default: break;
|
|
case ISD::Constant: {
|
|
unsigned Val = cast<ConstantSDNode>(N)->getZExtValue();
|
|
bool UseCP = true;
|
|
if (Subtarget->isThumb()) {
|
|
if (Subtarget->hasThumb2())
|
|
// Thumb2 has the MOVT instruction, so all immediates can
|
|
// be done with MOV + MOVT, at worst.
|
|
UseCP = 0;
|
|
else
|
|
UseCP = (Val > 255 && // MOV
|
|
~Val > 255 && // MOV + MVN
|
|
!ARM_AM::isThumbImmShiftedVal(Val)); // MOV + LSL
|
|
} else
|
|
UseCP = (ARM_AM::getSOImmVal(Val) == -1 && // MOV
|
|
ARM_AM::getSOImmVal(~Val) == -1 && // MVN
|
|
!ARM_AM::isSOImmTwoPartVal(Val)); // two instrs.
|
|
if (UseCP) {
|
|
SDValue CPIdx =
|
|
CurDAG->getTargetConstantPool(ConstantInt::get(
|
|
Type::getInt32Ty(*CurDAG->getContext()), Val),
|
|
TLI.getPointerTy());
|
|
|
|
SDNode *ResNode;
|
|
if (Subtarget->isThumb1Only()) {
|
|
SDValue Pred = CurDAG->getTargetConstant(0xEULL, MVT::i32);
|
|
SDValue PredReg = CurDAG->getRegister(0, MVT::i32);
|
|
SDValue Ops[] = { CPIdx, Pred, PredReg, CurDAG->getEntryNode() };
|
|
ResNode = CurDAG->getMachineNode(ARM::tLDRcp, dl, MVT::i32, MVT::Other,
|
|
Ops, 4);
|
|
} else {
|
|
SDValue Ops[] = {
|
|
CPIdx,
|
|
CurDAG->getRegister(0, MVT::i32),
|
|
CurDAG->getTargetConstant(0, MVT::i32),
|
|
getAL(CurDAG),
|
|
CurDAG->getRegister(0, MVT::i32),
|
|
CurDAG->getEntryNode()
|
|
};
|
|
ResNode=CurDAG->getMachineNode(ARM::LDRcp, dl, MVT::i32, MVT::Other,
|
|
Ops, 6);
|
|
}
|
|
ReplaceUses(Op, SDValue(ResNode, 0));
|
|
return NULL;
|
|
}
|
|
|
|
// Other cases are autogenerated.
|
|
break;
|
|
}
|
|
case ISD::FrameIndex: {
|
|
// Selects to ADDri FI, 0 which in turn will become ADDri SP, imm.
|
|
int FI = cast<FrameIndexSDNode>(N)->getIndex();
|
|
SDValue TFI = CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());
|
|
if (Subtarget->isThumb1Only()) {
|
|
return CurDAG->SelectNodeTo(N, ARM::tADDrSPi, MVT::i32, TFI,
|
|
CurDAG->getTargetConstant(0, MVT::i32));
|
|
} else {
|
|
unsigned Opc = ((Subtarget->isThumb() && Subtarget->hasThumb2()) ?
|
|
ARM::t2ADDri : ARM::ADDri);
|
|
SDValue Ops[] = { TFI, CurDAG->getTargetConstant(0, MVT::i32),
|
|
getAL(CurDAG), CurDAG->getRegister(0, MVT::i32),
|
|
CurDAG->getRegister(0, MVT::i32) };
|
|
return CurDAG->SelectNodeTo(N, Opc, MVT::i32, Ops, 5);
|
|
}
|
|
}
|
|
case ARMISD::DYN_ALLOC:
|
|
return SelectDYN_ALLOC(Op);
|
|
case ISD::MUL:
|
|
if (Subtarget->isThumb1Only())
|
|
break;
|
|
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
|
|
unsigned RHSV = C->getZExtValue();
|
|
if (!RHSV) break;
|
|
if (isPowerOf2_32(RHSV-1)) { // 2^n+1?
|
|
unsigned ShImm = Log2_32(RHSV-1);
|
|
if (ShImm >= 32)
|
|
break;
|
|
SDValue V = Op.getOperand(0);
|
|
ShImm = ARM_AM::getSORegOpc(ARM_AM::lsl, ShImm);
|
|
SDValue ShImmOp = CurDAG->getTargetConstant(ShImm, MVT::i32);
|
|
SDValue Reg0 = CurDAG->getRegister(0, MVT::i32);
|
|
if (Subtarget->isThumb()) {
|
|
SDValue Ops[] = { V, V, ShImmOp, getAL(CurDAG), Reg0, Reg0 };
|
|
return CurDAG->SelectNodeTo(N, ARM::t2ADDrs, MVT::i32, Ops, 6);
|
|
} else {
|
|
SDValue Ops[] = { V, V, Reg0, ShImmOp, getAL(CurDAG), Reg0, Reg0 };
|
|
return CurDAG->SelectNodeTo(N, ARM::ADDrs, MVT::i32, Ops, 7);
|
|
}
|
|
}
|
|
if (isPowerOf2_32(RHSV+1)) { // 2^n-1?
|
|
unsigned ShImm = Log2_32(RHSV+1);
|
|
if (ShImm >= 32)
|
|
break;
|
|
SDValue V = Op.getOperand(0);
|
|
ShImm = ARM_AM::getSORegOpc(ARM_AM::lsl, ShImm);
|
|
SDValue ShImmOp = CurDAG->getTargetConstant(ShImm, MVT::i32);
|
|
SDValue Reg0 = CurDAG->getRegister(0, MVT::i32);
|
|
if (Subtarget->isThumb()) {
|
|
SDValue Ops[] = { V, V, ShImmOp, getAL(CurDAG), Reg0 };
|
|
return CurDAG->SelectNodeTo(N, ARM::t2RSBrs, MVT::i32, Ops, 5);
|
|
} else {
|
|
SDValue Ops[] = { V, V, Reg0, ShImmOp, getAL(CurDAG), Reg0, Reg0 };
|
|
return CurDAG->SelectNodeTo(N, ARM::RSBrs, MVT::i32, Ops, 7);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case ARMISD::FMRRD:
|
|
return CurDAG->getMachineNode(ARM::FMRRD, dl, MVT::i32, MVT::i32,
|
|
Op.getOperand(0), getAL(CurDAG),
|
|
CurDAG->getRegister(0, MVT::i32));
|
|
case ISD::UMUL_LOHI: {
|
|
if (Subtarget->isThumb1Only())
|
|
break;
|
|
if (Subtarget->isThumb()) {
|
|
SDValue Ops[] = { Op.getOperand(0), Op.getOperand(1),
|
|
getAL(CurDAG), CurDAG->getRegister(0, MVT::i32),
|
|
CurDAG->getRegister(0, MVT::i32) };
|
|
return CurDAG->getMachineNode(ARM::t2UMULL, dl, MVT::i32, MVT::i32, Ops,4);
|
|
} else {
|
|
SDValue Ops[] = { Op.getOperand(0), Op.getOperand(1),
|
|
getAL(CurDAG), CurDAG->getRegister(0, MVT::i32),
|
|
CurDAG->getRegister(0, MVT::i32) };
|
|
return CurDAG->getMachineNode(ARM::UMULL, dl, MVT::i32, MVT::i32, Ops, 5);
|
|
}
|
|
}
|
|
case ISD::SMUL_LOHI: {
|
|
if (Subtarget->isThumb1Only())
|
|
break;
|
|
if (Subtarget->isThumb()) {
|
|
SDValue Ops[] = { Op.getOperand(0), Op.getOperand(1),
|
|
getAL(CurDAG), CurDAG->getRegister(0, MVT::i32) };
|
|
return CurDAG->getMachineNode(ARM::t2SMULL, dl, MVT::i32, MVT::i32, Ops,4);
|
|
} else {
|
|
SDValue Ops[] = { Op.getOperand(0), Op.getOperand(1),
|
|
getAL(CurDAG), CurDAG->getRegister(0, MVT::i32),
|
|
CurDAG->getRegister(0, MVT::i32) };
|
|
return CurDAG->getMachineNode(ARM::SMULL, dl, MVT::i32, MVT::i32, Ops, 5);
|
|
}
|
|
}
|
|
case ISD::LOAD: {
|
|
SDNode *ResNode = 0;
|
|
if (Subtarget->isThumb() && Subtarget->hasThumb2())
|
|
ResNode = SelectT2IndexedLoad(Op);
|
|
else
|
|
ResNode = SelectARMIndexedLoad(Op);
|
|
if (ResNode)
|
|
return ResNode;
|
|
// Other cases are autogenerated.
|
|
break;
|
|
}
|
|
case ARMISD::BRCOND: {
|
|
// Pattern: (ARMbrcond:void (bb:Other):$dst, (imm:i32):$cc)
|
|
// Emits: (Bcc:void (bb:Other):$dst, (imm:i32):$cc)
|
|
// Pattern complexity = 6 cost = 1 size = 0
|
|
|
|
// Pattern: (ARMbrcond:void (bb:Other):$dst, (imm:i32):$cc)
|
|
// Emits: (tBcc:void (bb:Other):$dst, (imm:i32):$cc)
|
|
// Pattern complexity = 6 cost = 1 size = 0
|
|
|
|
// Pattern: (ARMbrcond:void (bb:Other):$dst, (imm:i32):$cc)
|
|
// Emits: (t2Bcc:void (bb:Other):$dst, (imm:i32):$cc)
|
|
// Pattern complexity = 6 cost = 1 size = 0
|
|
|
|
unsigned Opc = Subtarget->isThumb() ?
|
|
((Subtarget->hasThumb2()) ? ARM::t2Bcc : ARM::tBcc) : ARM::Bcc;
|
|
SDValue Chain = Op.getOperand(0);
|
|
SDValue N1 = Op.getOperand(1);
|
|
SDValue N2 = Op.getOperand(2);
|
|
SDValue N3 = Op.getOperand(3);
|
|
SDValue InFlag = Op.getOperand(4);
|
|
assert(N1.getOpcode() == ISD::BasicBlock);
|
|
assert(N2.getOpcode() == ISD::Constant);
|
|
assert(N3.getOpcode() == ISD::Register);
|
|
|
|
SDValue Tmp2 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N2)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Ops[] = { N1, Tmp2, N3, Chain, InFlag };
|
|
SDNode *ResNode = CurDAG->getMachineNode(Opc, dl, MVT::Other,
|
|
MVT::Flag, Ops, 5);
|
|
Chain = SDValue(ResNode, 0);
|
|
if (Op.getNode()->getNumValues() == 2) {
|
|
InFlag = SDValue(ResNode, 1);
|
|
ReplaceUses(SDValue(Op.getNode(), 1), InFlag);
|
|
}
|
|
ReplaceUses(SDValue(Op.getNode(), 0), SDValue(Chain.getNode(), Chain.getResNo()));
|
|
return NULL;
|
|
}
|
|
case ARMISD::CMOV: {
|
|
EVT VT = Op.getValueType();
|
|
SDValue N0 = Op.getOperand(0);
|
|
SDValue N1 = Op.getOperand(1);
|
|
SDValue N2 = Op.getOperand(2);
|
|
SDValue N3 = Op.getOperand(3);
|
|
SDValue InFlag = Op.getOperand(4);
|
|
assert(N2.getOpcode() == ISD::Constant);
|
|
assert(N3.getOpcode() == ISD::Register);
|
|
|
|
if (!Subtarget->isThumb1Only() && VT == MVT::i32) {
|
|
// Pattern: (ARMcmov:i32 GPR:i32:$false, so_reg:i32:$true, (imm:i32):$cc)
|
|
// Emits: (MOVCCs:i32 GPR:i32:$false, so_reg:i32:$true, (imm:i32):$cc)
|
|
// Pattern complexity = 18 cost = 1 size = 0
|
|
SDValue CPTmp0;
|
|
SDValue CPTmp1;
|
|
SDValue CPTmp2;
|
|
if (Subtarget->isThumb()) {
|
|
if (SelectT2ShifterOperandReg(Op, N1, CPTmp0, CPTmp1)) {
|
|
unsigned SOVal = cast<ConstantSDNode>(CPTmp1)->getZExtValue();
|
|
unsigned SOShOp = ARM_AM::getSORegShOp(SOVal);
|
|
unsigned Opc = 0;
|
|
switch (SOShOp) {
|
|
case ARM_AM::lsl: Opc = ARM::t2MOVCClsl; break;
|
|
case ARM_AM::lsr: Opc = ARM::t2MOVCClsr; break;
|
|
case ARM_AM::asr: Opc = ARM::t2MOVCCasr; break;
|
|
case ARM_AM::ror: Opc = ARM::t2MOVCCror; break;
|
|
default:
|
|
llvm_unreachable("Unknown so_reg opcode!");
|
|
break;
|
|
}
|
|
SDValue SOShImm =
|
|
CurDAG->getTargetConstant(ARM_AM::getSORegOffset(SOVal), MVT::i32);
|
|
SDValue Tmp2 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N2)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Ops[] = { N0, CPTmp0, SOShImm, Tmp2, N3, InFlag };
|
|
return CurDAG->SelectNodeTo(Op.getNode(), Opc, MVT::i32,Ops, 6);
|
|
}
|
|
} else {
|
|
if (SelectShifterOperandReg(Op, N1, CPTmp0, CPTmp1, CPTmp2)) {
|
|
SDValue Tmp2 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N2)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Ops[] = { N0, CPTmp0, CPTmp1, CPTmp2, Tmp2, N3, InFlag };
|
|
return CurDAG->SelectNodeTo(Op.getNode(),
|
|
ARM::MOVCCs, MVT::i32, Ops, 7);
|
|
}
|
|
}
|
|
|
|
// Pattern: (ARMcmov:i32 GPR:i32:$false,
|
|
// (imm:i32)<<P:Predicate_so_imm>>:$true,
|
|
// (imm:i32):$cc)
|
|
// Emits: (MOVCCi:i32 GPR:i32:$false,
|
|
// (so_imm:i32 (imm:i32):$true), (imm:i32):$cc)
|
|
// Pattern complexity = 10 cost = 1 size = 0
|
|
if (N3.getOpcode() == ISD::Constant) {
|
|
if (Subtarget->isThumb()) {
|
|
if (Predicate_t2_so_imm(N3.getNode())) {
|
|
SDValue Tmp1 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N1)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Tmp2 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N2)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Ops[] = { N0, Tmp1, Tmp2, N3, InFlag };
|
|
return CurDAG->SelectNodeTo(Op.getNode(),
|
|
ARM::t2MOVCCi, MVT::i32, Ops, 5);
|
|
}
|
|
} else {
|
|
if (Predicate_so_imm(N3.getNode())) {
|
|
SDValue Tmp1 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N1)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Tmp2 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N2)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Ops[] = { N0, Tmp1, Tmp2, N3, InFlag };
|
|
return CurDAG->SelectNodeTo(Op.getNode(),
|
|
ARM::MOVCCi, MVT::i32, Ops, 5);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Pattern: (ARMcmov:i32 GPR:i32:$false, GPR:i32:$true, (imm:i32):$cc)
|
|
// Emits: (MOVCCr:i32 GPR:i32:$false, GPR:i32:$true, (imm:i32):$cc)
|
|
// Pattern complexity = 6 cost = 1 size = 0
|
|
//
|
|
// Pattern: (ARMcmov:i32 GPR:i32:$false, GPR:i32:$true, (imm:i32):$cc)
|
|
// Emits: (tMOVCCr:i32 GPR:i32:$false, GPR:i32:$true, (imm:i32):$cc)
|
|
// Pattern complexity = 6 cost = 11 size = 0
|
|
//
|
|
// Also FCPYScc and FCPYDcc.
|
|
SDValue Tmp2 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N2)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Ops[] = { N0, N1, Tmp2, N3, InFlag };
|
|
unsigned Opc = 0;
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: assert(false && "Illegal conditional move type!");
|
|
break;
|
|
case MVT::i32:
|
|
Opc = Subtarget->isThumb()
|
|
? (Subtarget->hasThumb2() ? ARM::t2MOVCCr : ARM::tMOVCCr_pseudo)
|
|
: ARM::MOVCCr;
|
|
break;
|
|
case MVT::f32:
|
|
Opc = ARM::FCPYScc;
|
|
break;
|
|
case MVT::f64:
|
|
Opc = ARM::FCPYDcc;
|
|
break;
|
|
}
|
|
return CurDAG->SelectNodeTo(Op.getNode(), Opc, VT, Ops, 5);
|
|
}
|
|
case ARMISD::CNEG: {
|
|
EVT VT = Op.getValueType();
|
|
SDValue N0 = Op.getOperand(0);
|
|
SDValue N1 = Op.getOperand(1);
|
|
SDValue N2 = Op.getOperand(2);
|
|
SDValue N3 = Op.getOperand(3);
|
|
SDValue InFlag = Op.getOperand(4);
|
|
assert(N2.getOpcode() == ISD::Constant);
|
|
assert(N3.getOpcode() == ISD::Register);
|
|
|
|
SDValue Tmp2 = CurDAG->getTargetConstant(((unsigned)
|
|
cast<ConstantSDNode>(N2)->getZExtValue()),
|
|
MVT::i32);
|
|
SDValue Ops[] = { N0, N1, Tmp2, N3, InFlag };
|
|
unsigned Opc = 0;
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: assert(false && "Illegal conditional move type!");
|
|
break;
|
|
case MVT::f32:
|
|
Opc = ARM::FNEGScc;
|
|
break;
|
|
case MVT::f64:
|
|
Opc = ARM::FNEGDcc;
|
|
break;
|
|
}
|
|
return CurDAG->SelectNodeTo(Op.getNode(), Opc, VT, Ops, 5);
|
|
}
|
|
|
|
case ARMISD::VZIP: {
|
|
unsigned Opc = 0;
|
|
EVT VT = N->getValueType(0);
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: return NULL;
|
|
case MVT::v8i8: Opc = ARM::VZIPd8; break;
|
|
case MVT::v4i16: Opc = ARM::VZIPd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VZIPd32; break;
|
|
case MVT::v16i8: Opc = ARM::VZIPq8; break;
|
|
case MVT::v8i16: Opc = ARM::VZIPq16; break;
|
|
case MVT::v4f32:
|
|
case MVT::v4i32: Opc = ARM::VZIPq32; break;
|
|
}
|
|
return CurDAG->getMachineNode(Opc, dl, VT, VT,
|
|
N->getOperand(0), N->getOperand(1));
|
|
}
|
|
case ARMISD::VUZP: {
|
|
unsigned Opc = 0;
|
|
EVT VT = N->getValueType(0);
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: return NULL;
|
|
case MVT::v8i8: Opc = ARM::VUZPd8; break;
|
|
case MVT::v4i16: Opc = ARM::VUZPd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VUZPd32; break;
|
|
case MVT::v16i8: Opc = ARM::VUZPq8; break;
|
|
case MVT::v8i16: Opc = ARM::VUZPq16; break;
|
|
case MVT::v4f32:
|
|
case MVT::v4i32: Opc = ARM::VUZPq32; break;
|
|
}
|
|
return CurDAG->getMachineNode(Opc, dl, VT, VT,
|
|
N->getOperand(0), N->getOperand(1));
|
|
}
|
|
case ARMISD::VTRN: {
|
|
unsigned Opc = 0;
|
|
EVT VT = N->getValueType(0);
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: return NULL;
|
|
case MVT::v8i8: Opc = ARM::VTRNd8; break;
|
|
case MVT::v4i16: Opc = ARM::VTRNd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VTRNd32; break;
|
|
case MVT::v16i8: Opc = ARM::VTRNq8; break;
|
|
case MVT::v8i16: Opc = ARM::VTRNq16; break;
|
|
case MVT::v4f32:
|
|
case MVT::v4i32: Opc = ARM::VTRNq32; break;
|
|
}
|
|
return CurDAG->getMachineNode(Opc, dl, VT, VT,
|
|
N->getOperand(0), N->getOperand(1));
|
|
}
|
|
|
|
case ISD::INTRINSIC_VOID:
|
|
case ISD::INTRINSIC_W_CHAIN: {
|
|
unsigned IntNo = cast<ConstantSDNode>(N->getOperand(1))->getZExtValue();
|
|
EVT VT = N->getValueType(0);
|
|
unsigned Opc = 0;
|
|
|
|
switch (IntNo) {
|
|
default:
|
|
break;
|
|
|
|
case Intrinsic::arm_neon_vld2: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vld2 type");
|
|
case MVT::v8i8: Opc = ARM::VLD2d8; break;
|
|
case MVT::v4i16: Opc = ARM::VLD2d16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VLD2d32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc, Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, VT, VT, MVT::Other, Ops, 4);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vld3: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vld3 type");
|
|
case MVT::v8i8: Opc = ARM::VLD3d8; break;
|
|
case MVT::v4i16: Opc = ARM::VLD3d16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VLD3d32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc, Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, VT, VT, VT, MVT::Other, Ops, 4);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vld4: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vld4 type");
|
|
case MVT::v8i8: Opc = ARM::VLD4d8; break;
|
|
case MVT::v4i16: Opc = ARM::VLD4d16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VLD4d32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc, Chain };
|
|
std::vector<EVT> ResTys(4, VT);
|
|
ResTys.push_back(MVT::Other);
|
|
return CurDAG->getMachineNode(Opc, dl, ResTys, Ops, 4);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vld2lane: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vld2lane type");
|
|
case MVT::v8i8: Opc = ARM::VLD2LNd8; break;
|
|
case MVT::v4i16: Opc = ARM::VLD2LNd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VLD2LNd32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4),
|
|
N->getOperand(5), Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, VT, VT, MVT::Other, Ops, 7);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vld3lane: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vld3lane type");
|
|
case MVT::v8i8: Opc = ARM::VLD3LNd8; break;
|
|
case MVT::v4i16: Opc = ARM::VLD3LNd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VLD3LNd32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4),
|
|
N->getOperand(5), N->getOperand(6), Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, VT, VT, VT, MVT::Other, Ops, 8);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vld4lane: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (VT.getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vld4lane type");
|
|
case MVT::v8i8: Opc = ARM::VLD4LNd8; break;
|
|
case MVT::v4i16: Opc = ARM::VLD4LNd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VLD4LNd32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4),
|
|
N->getOperand(5), N->getOperand(6),
|
|
N->getOperand(7), Chain };
|
|
std::vector<EVT> ResTys(4, VT);
|
|
ResTys.push_back(MVT::Other);
|
|
return CurDAG->getMachineNode(Opc, dl, ResTys, Ops, 9);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vst2: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (N->getOperand(3).getValueType().getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vst2 type");
|
|
case MVT::v8i8: Opc = ARM::VST2d8; break;
|
|
case MVT::v4i16: Opc = ARM::VST2d16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VST2d32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4), Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, MVT::Other, Ops, 6);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vst3: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (N->getOperand(3).getValueType().getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vst3 type");
|
|
case MVT::v8i8: Opc = ARM::VST3d8; break;
|
|
case MVT::v4i16: Opc = ARM::VST3d16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VST3d32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4),
|
|
N->getOperand(5), Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, MVT::Other, Ops, 7);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vst4: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (N->getOperand(3).getValueType().getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vst4 type");
|
|
case MVT::v8i8: Opc = ARM::VST4d8; break;
|
|
case MVT::v4i16: Opc = ARM::VST4d16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VST4d32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4),
|
|
N->getOperand(5), N->getOperand(6), Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, MVT::Other, Ops, 8);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vst2lane: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (N->getOperand(3).getValueType().getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vst2lane type");
|
|
case MVT::v8i8: Opc = ARM::VST2LNd8; break;
|
|
case MVT::v4i16: Opc = ARM::VST2LNd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VST2LNd32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4),
|
|
N->getOperand(5), Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, MVT::Other, Ops, 7);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vst3lane: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (N->getOperand(3).getValueType().getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vst3lane type");
|
|
case MVT::v8i8: Opc = ARM::VST3LNd8; break;
|
|
case MVT::v4i16: Opc = ARM::VST3LNd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VST3LNd32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4),
|
|
N->getOperand(5), N->getOperand(6), Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, MVT::Other, Ops, 8);
|
|
}
|
|
|
|
case Intrinsic::arm_neon_vst4lane: {
|
|
SDValue MemAddr, MemUpdate, MemOpc;
|
|
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
|
|
return NULL;
|
|
switch (N->getOperand(3).getValueType().getSimpleVT().SimpleTy) {
|
|
default: llvm_unreachable("unhandled vst4lane type");
|
|
case MVT::v8i8: Opc = ARM::VST4LNd8; break;
|
|
case MVT::v4i16: Opc = ARM::VST4LNd16; break;
|
|
case MVT::v2f32:
|
|
case MVT::v2i32: Opc = ARM::VST4LNd32; break;
|
|
}
|
|
SDValue Chain = N->getOperand(0);
|
|
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc,
|
|
N->getOperand(3), N->getOperand(4),
|
|
N->getOperand(5), N->getOperand(6),
|
|
N->getOperand(7), Chain };
|
|
return CurDAG->getMachineNode(Opc, dl, MVT::Other, Ops, 9);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return SelectCode(Op);
|
|
}
|
|
|
|
bool ARMDAGToDAGISel::
|
|
SelectInlineAsmMemoryOperand(const SDValue &Op, char ConstraintCode,
|
|
std::vector<SDValue> &OutOps) {
|
|
assert(ConstraintCode == 'm' && "unexpected asm memory constraint");
|
|
|
|
SDValue Base, Offset, Opc;
|
|
if (!SelectAddrMode2(Op, Op, Base, Offset, Opc))
|
|
return true;
|
|
|
|
OutOps.push_back(Base);
|
|
OutOps.push_back(Offset);
|
|
OutOps.push_back(Opc);
|
|
return false;
|
|
}
|
|
|
|
/// createARMISelDag - This pass converts a legalized DAG into a
|
|
/// ARM-specific DAG, ready for instruction scheduling.
|
|
///
|
|
FunctionPass *llvm::createARMISelDag(ARMBaseTargetMachine &TM) {
|
|
return new ARMDAGToDAGISel(TM);
|
|
}
|