PPCISelDAGToDAG.cpp revision c15ed447f494c77a76c24661893e22192ebb2103
1a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner//===-- PPC32ISelDAGToDAG.cpp - PPC32 pattern matching inst selector ------===// 2a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 3a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// The LLVM Compiler Infrastructure 4a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 5a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// This file was developed by Chris Lattner and is distributed under 6a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// the University of Illinois Open Source License. See LICENSE.TXT for details. 7a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 8a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner//===----------------------------------------------------------------------===// 9a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 10a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// This file defines a pattern matching instruction selector for 32 bit PowerPC, 11a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// converting from a legalized dag to a PPC dag. 12a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// 13a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner//===----------------------------------------------------------------------===// 14a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 15a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "PowerPC.h" 16a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "PPC32TargetMachine.h" 17a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "PPC32ISelLowering.h" 18a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/CodeGen/SelectionDAG.h" 19a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/CodeGen/SelectionDAGISel.h" 20a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/Target/TargetOptions.h" 21a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/ADT/Statistic.h" 22a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/Support/Debug.h" 23a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner#include "llvm/Support/MathExtras.h" 24a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerusing namespace llvm; 25a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 26a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnernamespace { 27a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Statistic<> Recorded("ppc-codegen", "Number of recording ops emitted"); 28a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Statistic<> FusedFP ("ppc-codegen", "Number of fused fp operations"); 29a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Statistic<> FrameOff("ppc-codegen", "Number of frame idx offsets collapsed"); 30a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 31a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner //===--------------------------------------------------------------------===// 32a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// PPC32DAGToDAGISel - PPC32 specific code to select PPC32 machine 33a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// instructions for SelectionDAG operations. 34a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// 35a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner class PPC32DAGToDAGISel : public SelectionDAGISel { 36a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner PPC32TargetLowering PPC32Lowering; 37a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 38a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner public: 39a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner PPC32DAGToDAGISel(TargetMachine &TM) 40a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner : SelectionDAGISel(PPC32Lowering), PPC32Lowering(TM) {} 41a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 42a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// getI32Imm - Return a target constant with the specified value, of type 43a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// i32. 44a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner inline SDOperand getI32Imm(unsigned Imm) { 45a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return CurDAG->getTargetConstant(Imm, MVT::i32); 46a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 47a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 48a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Select - Convert the specified operand from a target-independent to a 49a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // target-specific node if it hasn't already been changed. 50a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Select(SDOperand Op); 51a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 52a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDNode *SelectIntImmediateExpr(SDOperand LHS, SDOperand RHS, 53a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned OCHi, unsigned OCLo, 54a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner bool IsArithmetic = false, 55a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner bool Negate = false); 56a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 57a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// InstructionSelectBasicBlock - This callback is invoked by 58a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner /// SelectionDAGISel when it has created a SelectionDAG for us to codegen. 59a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner virtual void InstructionSelectBasicBlock(SelectionDAG &DAG) { 60a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner DEBUG(BB->dump()); 61d607c12e8e8533028a66c9f533007c6c32a64cefChris Lattner // Select target instructions for the DAG. 62a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(DAG.getRoot()); 63a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner DAG.RemoveDeadNodes(); 64d607c12e8e8533028a66c9f533007c6c32a64cefChris Lattner 65d607c12e8e8533028a66c9f533007c6c32a64cefChris Lattner // Emit machine code to BB. 66d607c12e8e8533028a66c9f533007c6c32a64cefChris Lattner ScheduleAndEmitDAG(DAG); 67a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 68a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 69a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner virtual const char *getPassName() const { 70a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return "PowerPC DAG->DAG Pattern Instruction Selection"; 71a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 72a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner }; 73a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 74a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 750f3257a3302b60c128a667db6736e81335316c1eNate Begeman// isIntImmediate - This method tests to see if a constant operand. 760f3257a3302b60c128a667db6736e81335316c1eNate Begeman// If so Imm will receive the 32 bit value. 770f3257a3302b60c128a667db6736e81335316c1eNate Begemanstatic bool isIntImmediate(SDNode *N, unsigned& Imm) { 780f3257a3302b60c128a667db6736e81335316c1eNate Begeman if (N->getOpcode() == ISD::Constant) { 790f3257a3302b60c128a667db6736e81335316c1eNate Begeman Imm = cast<ConstantSDNode>(N)->getValue(); 800f3257a3302b60c128a667db6736e81335316c1eNate Begeman return true; 810f3257a3302b60c128a667db6736e81335316c1eNate Begeman } 820f3257a3302b60c128a667db6736e81335316c1eNate Begeman return false; 830f3257a3302b60c128a667db6736e81335316c1eNate Begeman} 840f3257a3302b60c128a667db6736e81335316c1eNate Begeman 85cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// isOprShiftImm - Returns true if the specified operand is a shift opcode with 86cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// a immediate shift count less than 32. 87cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begemanstatic bool isOprShiftImm(SDNode *N, unsigned& Opc, unsigned& SH) { 88cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Opc = N->getOpcode(); 89cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return (Opc == ISD::SHL || Opc == ISD::SRL || Opc == ISD::SRA) && 90cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman isIntImmediate(N->getOperand(1).Val, SH) && SH < 32; 91cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman} 92cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 93cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// isRunOfOnes - Returns true iff Val consists of one contiguous run of 1s with 94cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// any number of 0s on either side. The 1s are allowed to wrap from LSB to 95cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// MSB, so 0x000FFF0, 0x0000FFFF, and 0xFF0000FF are all runs. 0x0F0F0000 is 96cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// not, since all 1s are not contiguous. 97cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begemanstatic bool isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME) { 98cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (isShiftedMask_32(Val)) { 99cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // look for the first non-zero bit 100cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman MB = CountLeadingZeros_32(Val); 101cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // look for the first zero bit after the run of ones 102cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman ME = CountLeadingZeros_32((Val - 1) ^ Val); 103cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return true; 104cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } else if (isShiftedMask_32(Val = ~Val)) { // invert mask 105cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // effectively look for the first zero bit 106cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman ME = CountLeadingZeros_32(Val) - 1; 107cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // effectively look for the first one bit after the run of zeros 108cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman MB = CountLeadingZeros_32((Val - 1) ^ Val) + 1; 109cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return true; 110cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 111cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // no run present 112cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return false; 113cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman} 114cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 115cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// isRotateAndMask - Returns true if Mask and Shift can be folded in to a rotate 116cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman// and mask opcode and mask operation. 117cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begemanstatic bool isRotateAndMask(SDNode *N, unsigned Mask, bool IsShiftMask, 118cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman unsigned &SH, unsigned &MB, unsigned &ME) { 119cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman unsigned Shift = 32; 120cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman unsigned Indeterminant = ~0; // bit mask marking indeterminant results 121cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman unsigned Opcode = N->getOpcode(); 122cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (!isIntImmediate(N->getOperand(1).Val, Shift) || (Shift > 31)) 123cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return false; 124cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 125cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (Opcode == ISD::SHL) { 126cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // apply shift left to mask if it comes first 127cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (IsShiftMask) Mask = Mask << Shift; 128cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // determine which bits are made indeterminant by shift 129cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Indeterminant = ~(0xFFFFFFFFu << Shift); 130cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } else if (Opcode == ISD::SRA || Opcode == ISD::SRL) { 131cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // apply shift right to mask if it comes first 132cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (IsShiftMask) Mask = Mask >> Shift; 133cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // determine which bits are made indeterminant by shift 134cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Indeterminant = ~(0xFFFFFFFFu >> Shift); 135cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // adjust for the left rotate 136cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Shift = 32 - Shift; 137cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } else { 138cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return false; 139cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 140cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 141cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // if the mask doesn't intersect any Indeterminant bits 142cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (Mask && !(Mask & Indeterminant)) { 143cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman SH = Shift; 144cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // make sure the mask is still a mask (wrap arounds may not be) 145cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return isRunOfOnes(Mask, MB, ME); 146cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 147cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman return false; 148cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman} 149cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman 1500f3257a3302b60c128a667db6736e81335316c1eNate Begeman// isOpcWithIntImmediate - This method tests to see if the node is a specific 1510f3257a3302b60c128a667db6736e81335316c1eNate Begeman// opcode and that it has a immediate integer right operand. 1520f3257a3302b60c128a667db6736e81335316c1eNate Begeman// If so Imm will receive the 32 bit value. 1530f3257a3302b60c128a667db6736e81335316c1eNate Begemanstatic bool isOpcWithIntImmediate(SDNode *N, unsigned Opc, unsigned& Imm) { 1540f3257a3302b60c128a667db6736e81335316c1eNate Begeman return N->getOpcode() == Opc && isIntImmediate(N->getOperand(1).Val, Imm); 1550f3257a3302b60c128a667db6736e81335316c1eNate Begeman} 1560f3257a3302b60c128a667db6736e81335316c1eNate Begeman 1570f3257a3302b60c128a667db6736e81335316c1eNate Begeman// isOprNot - Returns true if the specified operand is an xor with immediate -1. 1580f3257a3302b60c128a667db6736e81335316c1eNate Begemanstatic bool isOprNot(SDNode *N) { 1590f3257a3302b60c128a667db6736e81335316c1eNate Begeman unsigned Imm; 1600f3257a3302b60c128a667db6736e81335316c1eNate Begeman return isOpcWithIntImmediate(N, ISD::XOR, Imm) && (signed)Imm == -1; 1610f3257a3302b60c128a667db6736e81335316c1eNate Begeman} 1620f3257a3302b60c128a667db6736e81335316c1eNate Begeman 163a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// Immediate constant composers. 164a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// Lo16 - grabs the lo 16 bits from a 32 bit constant. 165a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// Hi16 - grabs the hi 16 bits from a 32 bit constant. 166a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// HA16 - computes the hi bits required if the lo bits are add/subtracted in 167a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// arithmethically. 168a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerstatic unsigned Lo16(unsigned x) { return x & 0x0000FFFF; } 169a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerstatic unsigned Hi16(unsigned x) { return Lo16(x >> 16); } 170a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerstatic unsigned HA16(unsigned x) { return Hi16((signed)x - (signed short)x); } 171a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 172a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// isIntImmediate - This method tests to see if a constant operand. 173a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// If so Imm will receive the 32 bit value. 174a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattnerstatic bool isIntImmediate(SDOperand N, unsigned& Imm) { 175a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(N)) { 176a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Imm = (unsigned)CN->getSignExtended(); 177a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return true; 178a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 179a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return false; 180a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 181a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 182a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// SelectIntImmediateExpr - Choose code for integer operations with an immediate 183a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// operand. 184a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris LattnerSDNode *PPC32DAGToDAGISel::SelectIntImmediateExpr(SDOperand LHS, SDOperand RHS, 185a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned OCHi, unsigned OCLo, 186a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner bool IsArithmetic, 187a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner bool Negate) { 188a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Check to make sure this is a constant. 189a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ConstantSDNode *CN = dyn_cast<ConstantSDNode>(RHS); 190a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Exit if not a constant. 191a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (!CN) return 0; 192a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Extract immediate. 193a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned C = (unsigned)CN->getValue(); 194a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Negate if required (ISD::SUB). 195a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Negate) C = -C; 196a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Get the hi and lo portions of constant. 197a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned Hi = IsArithmetic ? HA16(C) : Hi16(C); 198a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned Lo = Lo16(C); 199a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 200a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // If two instructions are needed and usage indicates it would be better to 201a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // load immediate into a register, bail out. 202a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Hi && Lo && CN->use_size() > 2) return false; 203a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 204a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Select the first operand. 205a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Opr0 = Select(LHS); 206a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 207a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Lo) // Add in the lo-part. 208a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Opr0 = CurDAG->getTargetNode(OCLo, MVT::i32, Opr0, getI32Imm(Lo)); 209a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Hi) // Add in the hi-part. 210a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Opr0 = CurDAG->getTargetNode(OCHi, MVT::i32, Opr0, getI32Imm(Hi)); 211a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return Opr0.Val; 212a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 213a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 214a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 215a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// Select - Convert the specified operand from a target-independent to a 216a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner// target-specific node if it hasn't already been changed. 217a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris LattnerSDOperand PPC32DAGToDAGISel::Select(SDOperand Op) { 218a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDNode *N = Op.Val; 219a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (N->getOpcode() >= ISD::BUILTIN_OP_END) 220a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return Op; // Already selected. 221a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 222a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner switch (N->getOpcode()) { 223a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner default: 224a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner std::cerr << "Cannot yet select: "; 225a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->dump(); 226a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner std::cerr << "\n"; 227a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner abort(); 228a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::EntryToken: // These leaves remain the same. 229a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::UNDEF: 230a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return Op; 231a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::TokenFactor: { 232a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand New; 233a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (N->getNumOperands() == 2) { 234a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Op0 = Select(N->getOperand(0)); 235a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Op1 = Select(N->getOperand(1)); 236a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner New = CurDAG->getNode(ISD::TokenFactor, MVT::Other, Op0, Op1); 237a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } else { 238a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner std::vector<SDOperand> Ops; 239a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 240a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Ops.push_back(Select(N->getOperand(0))); 241a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner New = CurDAG->getNode(ISD::TokenFactor, MVT::Other, Ops); 242a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 243a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 244a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (New.Val != N) { 245a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->ReplaceAllUsesWith(N, New.Val); 246a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N = New.Val; 247a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 248a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 249a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 250a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::CopyFromReg: { 251a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Chain = Select(N->getOperand(0)); 252a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Chain == N->getOperand(0)) return Op; // No change 253a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand New = CurDAG->getCopyFromReg(Chain, 254a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner cast<RegisterSDNode>(N->getOperand(1))->getReg(), N->getValueType(0)); 255a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return New.getValue(Op.ResNo); 256a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 257a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::CopyToReg: { 258a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Chain = Select(N->getOperand(0)); 259a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Reg = N->getOperand(1); 260a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Val = Select(N->getOperand(2)); 261a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Chain != N->getOperand(0) || Val != N->getOperand(2)) { 262a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand New = CurDAG->getNode(ISD::CopyToReg, MVT::Other, 263a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Chain, Reg, Val); 264a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->ReplaceAllUsesWith(N, New.Val); 265a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N = New.Val; 266a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 267a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 268a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 269a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::Constant: { 270a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner assert(N->getValueType(0) == MVT::i32); 271a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned v = (unsigned)cast<ConstantSDNode>(N)->getValue(); 272a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman unsigned Hi = HA16(v); 273a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman unsigned Lo = Lo16(v); 274a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman if (Hi && Lo) { 275a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman SDOperand Top = CurDAG->getTargetNode(PPC::LIS, MVT::i32, 276a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman getI32Imm(v >> 16)); 277a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::ORI, Top, getI32Imm(v & 0xFFFF)); 278a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman } else if (Lo) { 279a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, MVT::i32, PPC::LI, getI32Imm(v)); 280a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } else { 281a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::LIS, getI32Imm(v >> 16)); 282a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 283a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman break; 284a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 285305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::SIGN_EXTEND_INREG: 286305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman switch(cast<VTSDNode>(N->getOperand(1))->getVT()) { 287305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman default: assert(0 && "Illegal type in SIGN_EXTEND_INREG"); break; 288305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case MVT::i16: 289305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::EXTSH, Select(N->getOperand(0))); 290305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman break; 291305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case MVT::i8: 292305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::EXTSB, Select(N->getOperand(0))); 293305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman break; 294305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman } 295305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman break; 296305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::CTLZ: 297305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman assert(N->getValueType(0) == MVT::i32); 298305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::CNTLZW, Select(N->getOperand(0))); 299305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman break; 300a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::ADD: { 301a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner MVT::ValueType Ty = N->getValueType(0); 302a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Ty == MVT::i32) { 303a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (SDNode *I = SelectIntImmediateExpr(N->getOperand(0), N->getOperand(1), 304a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner PPC::ADDIS, PPC::ADDI, true)) { 305a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->ReplaceAllUsesWith(N, I); 306a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N = I; 307a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } else { 308a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, PPC::ADD, Select(N->getOperand(0)), 309a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1))); 310a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 311a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 312a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 313a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 314a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (!NoExcessFPPrecision) { // Match FMA ops 315a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (N->getOperand(0).getOpcode() == ISD::MUL && 316a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(0).Val->hasOneUse()) { 317a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ++FusedFP; // Statistic 318a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, Ty == MVT::f64 ? PPC::FMADD : PPC::FMADDS, 319a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0).getOperand(0)), 320a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0).getOperand(1)), 321a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1))); 322a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 323a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } else if (N->getOperand(1).getOpcode() == ISD::MUL && 324a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(1).hasOneUse()) { 325a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ++FusedFP; // Statistic 326a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, Ty == MVT::f64 ? PPC::FMADD : PPC::FMADDS, 327a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1).getOperand(0)), 328a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1).getOperand(1)), 329a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0))); 330a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 331a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 332a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 333a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 334a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, Ty == MVT::f64 ? PPC::FADD : PPC::FADDS, 335a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0)), Select(N->getOperand(1))); 336a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 337a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 338a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::SUB: { 339a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner MVT::ValueType Ty = N->getValueType(0); 340a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (Ty == MVT::i32) { 341a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner unsigned Imm; 342a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (isIntImmediate(N->getOperand(0), Imm) && isInt16(Imm)) { 343a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, PPC::SUBFIC, Select(N->getOperand(1)), 344a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner getI32Imm(Lo16(Imm))); 345a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 346a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 347a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (SDNode *I = SelectIntImmediateExpr(N->getOperand(0), N->getOperand(1), 348a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner PPC::ADDIS, PPC::ADDI, true, true)) { 349a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->ReplaceAllUsesWith(N, I); 350a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N = I; 351a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } else { 352a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, PPC::SUBF, Select(N->getOperand(1)), 353a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0))); 354a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 355a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 356a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 357a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 358a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (!NoExcessFPPrecision) { // Match FMA ops 359a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (N->getOperand(0).getOpcode() == ISD::MUL && 360a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(0).Val->hasOneUse()) { 361a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ++FusedFP; // Statistic 362a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, Ty == MVT::f64 ? PPC::FMSUB : PPC::FMSUBS, 363a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0).getOperand(0)), 364a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0).getOperand(1)), 365a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1))); 366a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 367a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } else if (N->getOperand(1).getOpcode() == ISD::MUL && 368a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(1).Val->hasOneUse()) { 369a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner ++FusedFP; // Statistic 370a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, Ty == MVT::f64 ? PPC::FNMSUB : PPC::FNMSUBS, 371a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1).getOperand(0)), 372a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1).getOperand(1)), 373a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0))); 374a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 375a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 376a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 377a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, Ty, Ty == MVT::f64 ? PPC::FSUB : PPC::FSUBS, 378a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(0)), 379a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Select(N->getOperand(1))); 380a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 38126653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 382b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman case ISD::MUL: { 383b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman unsigned Imm, Opc; 384b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman if (isIntImmediate(N->getOperand(1), Imm) && isInt16(Imm)) { 385b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman CurDAG->SelectNodeTo(N, N->getValueType(0), PPC::MULLI, 386b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman Select(N->getOperand(0)), getI32Imm(Lo16(Imm))); 387b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman break; 388b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman } 389b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman switch (N->getValueType(0)) { 390b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman default: assert(0 && "Unhandled multiply type!"); 391b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman case MVT::i32: Opc = PPC::MULLW; break; 392b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman case MVT::f32: Opc = PPC::FMULS; break; 393b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman case MVT::f64: Opc = PPC::FMUL; break; 394b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman } 395b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman CurDAG->SelectNodeTo(N, N->getValueType(0), Opc, Select(N->getOperand(0)), 396b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman Select(N->getOperand(1))); 397b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman break; 398b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman } 399305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::MULHS: 400b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman assert(N->getValueType(0) == MVT::i32); 401305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::MULHW, Select(N->getOperand(0)), 402305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman Select(N->getOperand(1))); 403b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman break; 404305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::MULHU: 405b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman assert(N->getValueType(0) == MVT::i32); 406305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::MULHWU, Select(N->getOperand(0)), 407305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman Select(N->getOperand(1))); 408b5a0668d43582297e19d03df34e0a0c09a1f6c45Nate Begeman break; 409cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman case ISD::AND: { 410a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman unsigned Imm; 411cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // If this is an and of a value rotated between 0 and 31 bits and then and'd 412cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // with a mask, emit rlwinm 413cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (isIntImmediate(N->getOperand(1), Imm) && (isShiftedMask_32(Imm) || 414cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman isShiftedMask_32(~Imm))) { 415cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman SDOperand Val; 416a69404781344c4aee05935ee921bbf2844911bc0Nate Begeman unsigned SH, MB, ME; 417cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (isRotateAndMask(N->getOperand(0).Val, Imm, false, SH, MB, ME)) { 418cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Val = Select(N->getOperand(0).getOperand(0)); 419cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } else { 420cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Val = Select(N->getOperand(0)); 421cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman isRunOfOnes(Imm, MB, ME); 422cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman SH = 0; 423cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 424cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::RLWINM, Val, getI32Imm(SH), 425cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman getI32Imm(MB), getI32Imm(ME)); 426cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman break; 427cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 428cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // If this is an and with an immediate that isn't a mask, then codegen it as 429cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // high and low 16 bit immediate ands. 430cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (SDNode *I = SelectIntImmediateExpr(N->getOperand(0), 431cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman N->getOperand(1), 432cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman PPC::ANDISo, PPC::ANDIo)) { 433cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman CurDAG->ReplaceAllUsesWith(N, I); 434cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman N = I; 435cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman break; 436cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 437cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // Finally, check for the case where we are being asked to select 438cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman // and (not(a), b) or and (a, not(b)) which can be selected as andc. 439cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman if (isOprNot(N->getOperand(0).Val)) 440cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::ANDC, Select(N->getOperand(1)), 441cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Select(N->getOperand(0).getOperand(0))); 442cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman else if (isOprNot(N->getOperand(1).Val)) 443cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::ANDC, Select(N->getOperand(0)), 444cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Select(N->getOperand(1).getOperand(0))); 445cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman else 446cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::AND, Select(N->getOperand(0)), 447cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman Select(N->getOperand(1))); 448cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman break; 449cffc32b6e2e1edc2ddd62a00159f7008ee765d3eNate Begeman } 4500f3257a3302b60c128a667db6736e81335316c1eNate Begeman case ISD::XOR: 4510f3257a3302b60c128a667db6736e81335316c1eNate Begeman // Check whether or not this node is a logical 'not'. This is represented 4520f3257a3302b60c128a667db6736e81335316c1eNate Begeman // by llvm as a xor with the constant value -1 (all bits set). If this is a 4530f3257a3302b60c128a667db6736e81335316c1eNate Begeman // 'not', then fold 'or' into 'nor', and so forth for the supported ops. 4540f3257a3302b60c128a667db6736e81335316c1eNate Begeman if (isOprNot(N)) { 4550f3257a3302b60c128a667db6736e81335316c1eNate Begeman unsigned Opc; 456131a8805205c383f67b3b6a11777401e27b90371Nate Begeman SDOperand Val = Select(N->getOperand(0)); 457131a8805205c383f67b3b6a11777401e27b90371Nate Begeman switch (Val.getTargetOpcode()) { 4580f3257a3302b60c128a667db6736e81335316c1eNate Begeman default: Opc = 0; break; 459131a8805205c383f67b3b6a11777401e27b90371Nate Begeman case PPC::OR: Opc = PPC::NOR; break; 460131a8805205c383f67b3b6a11777401e27b90371Nate Begeman case PPC::AND: Opc = PPC::NAND; break; 461131a8805205c383f67b3b6a11777401e27b90371Nate Begeman case PPC::XOR: Opc = PPC::EQV; break; 4620f3257a3302b60c128a667db6736e81335316c1eNate Begeman } 4630f3257a3302b60c128a667db6736e81335316c1eNate Begeman if (Opc) 464131a8805205c383f67b3b6a11777401e27b90371Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, Opc, Val.getOperand(0), 465131a8805205c383f67b3b6a11777401e27b90371Nate Begeman Val.getOperand(1)); 4660f3257a3302b60c128a667db6736e81335316c1eNate Begeman else 467131a8805205c383f67b3b6a11777401e27b90371Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::NOR, Val, Val); 4680f3257a3302b60c128a667db6736e81335316c1eNate Begeman break; 4690f3257a3302b60c128a667db6736e81335316c1eNate Begeman } 4700f3257a3302b60c128a667db6736e81335316c1eNate Begeman // If this is a xor with an immediate other than -1, then codegen it as high 4710f3257a3302b60c128a667db6736e81335316c1eNate Begeman // and low 16 bit immediate xors. 4720f3257a3302b60c128a667db6736e81335316c1eNate Begeman if (SDNode *I = SelectIntImmediateExpr(N->getOperand(0), 4730f3257a3302b60c128a667db6736e81335316c1eNate Begeman N->getOperand(1), 4740f3257a3302b60c128a667db6736e81335316c1eNate Begeman PPC::XORIS, PPC::XORI)) { 4750f3257a3302b60c128a667db6736e81335316c1eNate Begeman CurDAG->ReplaceAllUsesWith(N, I); 4760f3257a3302b60c128a667db6736e81335316c1eNate Begeman N = I; 4770f3257a3302b60c128a667db6736e81335316c1eNate Begeman break; 4780f3257a3302b60c128a667db6736e81335316c1eNate Begeman } 4790f3257a3302b60c128a667db6736e81335316c1eNate Begeman // Finally, check for the case where we are being asked to select 4800f3257a3302b60c128a667db6736e81335316c1eNate Begeman // xor (not(a), b) which is equivalent to not(xor a, b), which is eqv 4810f3257a3302b60c128a667db6736e81335316c1eNate Begeman if (isOprNot(N->getOperand(0).Val)) 4820f3257a3302b60c128a667db6736e81335316c1eNate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::EQV, 4830f3257a3302b60c128a667db6736e81335316c1eNate Begeman Select(N->getOperand(0).getOperand(0)), 4840f3257a3302b60c128a667db6736e81335316c1eNate Begeman Select(N->getOperand(1))); 4850f3257a3302b60c128a667db6736e81335316c1eNate Begeman else 4860f3257a3302b60c128a667db6736e81335316c1eNate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::XOR, Select(N->getOperand(0)), 4870f3257a3302b60c128a667db6736e81335316c1eNate Begeman Select(N->getOperand(1))); 4880f3257a3302b60c128a667db6736e81335316c1eNate Begeman break; 489c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman case ISD::SHL: { 490c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman unsigned Imm, SH, MB, ME; 491c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman if (isOpcWithIntImmediate(N->getOperand(0).Val, ISD::AND, Imm) && 492c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman isRotateAndMask(N, Imm, true, SH, MB, ME)) 493c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::RLWINM, 494c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(0).getOperand(0)), 495c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(SH), getI32Imm(MB), getI32Imm(ME)); 496c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else if (isIntImmediate(N->getOperand(1), Imm)) 497c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::RLWINM, Select(N->getOperand(0)), 498c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(Imm), getI32Imm(0), getI32Imm(31-Imm)); 499c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else 500c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::SLW, Select(N->getOperand(0)), 501c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(1))); 502c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman break; 503c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman } 504c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman case ISD::SRL: { 505c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman unsigned Imm, SH, MB, ME; 506c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman if (isOpcWithIntImmediate(N->getOperand(0).Val, ISD::AND, Imm) && 507c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman isRotateAndMask(N, Imm, true, SH, MB, ME)) 508c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::RLWINM, 509c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(0).getOperand(0)), 510c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(SH), getI32Imm(MB), getI32Imm(ME)); 511c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else if (isIntImmediate(N->getOperand(1), Imm)) 512c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::RLWINM, Select(N->getOperand(0)), 513c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(32-Imm), getI32Imm(Imm), getI32Imm(31)); 514c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else 515c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::SRW, Select(N->getOperand(0)), 516c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(1))); 517c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman break; 518c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman } 519c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman case ISD::SRA: { 520c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman unsigned Imm, SH, MB, ME; 521c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman if (isOpcWithIntImmediate(N->getOperand(0).Val, ISD::AND, Imm) && 522c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman isRotateAndMask(N, Imm, true, SH, MB, ME)) 523c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::RLWINM, 524c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(0).getOperand(0)), 525c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(SH), getI32Imm(MB), getI32Imm(ME)); 526c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else if (isIntImmediate(N->getOperand(1), Imm)) 527c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::SRAWI, Select(N->getOperand(0)), 528c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman getI32Imm(Imm)); 529c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman else 530c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman CurDAG->SelectNodeTo(N, MVT::i32, PPC::SRAW, Select(N->getOperand(0)), 531c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman Select(N->getOperand(1))); 532c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman break; 533c15ed447f494c77a76c24661893e22192ebb2103Nate Begeman } 534305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::FABS: 5356a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman CurDAG->SelectNodeTo(N, N->getValueType(0), PPC::FABS, 5366a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman Select(N->getOperand(0))); 5376a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman break; 538305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::FP_EXTEND: 539305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman assert(MVT::f64 == N->getValueType(0) && 540305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman MVT::f32 == N->getOperand(0).getValueType() && "Illegal FP_EXTEND"); 541305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman CurDAG->SelectNodeTo(N, MVT::f64, PPC::FMR, Select(N->getOperand(0))); 542305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman break; 543305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman case ISD::FP_ROUND: 544305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman assert(MVT::f32 == N->getValueType(0) && 545305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman MVT::f64 == N->getOperand(0).getValueType() && "Illegal FP_ROUND"); 546305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman CurDAG->SelectNodeTo(N, MVT::f32, PPC::FRSP, Select(N->getOperand(0))); 547305a1c75cfcc1b2e97c2bccebd42a70d99e7d127Nate Begeman break; 54826653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case ISD::FNEG: { 54926653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman SDOperand Val = Select(N->getOperand(0)); 55026653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman MVT::ValueType Ty = N->getValueType(0); 55126653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman if (Val.Val->hasOneUse()) { 55226653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman unsigned Opc; 55326653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman switch (Val.getTargetOpcode()) { 55426653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman default: Opc = 0; break; 55526653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FABS: Opc = PPC::FNABS; break; 55626653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FMADD: Opc = PPC::FNMADD; break; 55726653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FMADDS: Opc = PPC::FNMADDS; break; 55826653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FMSUB: Opc = PPC::FNMSUB; break; 55926653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman case PPC::FMSUBS: Opc = PPC::FNMSUBS; break; 56026653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 56126653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman // If we inverted the opcode, then emit the new instruction with the 56226653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman // inverted opcode and the original instruction's operands. Otherwise, 56326653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman // fall through and generate a fneg instruction. 56426653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman if (Opc) { 56526653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman if (PPC::FNABS == Opc) 56626653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman CurDAG->SelectNodeTo(N, Ty, Opc, Val.getOperand(0)); 56726653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman else 56826653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman CurDAG->SelectNodeTo(N, Ty, Opc, Val.getOperand(0), 56926653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman Val.getOperand(1), Val.getOperand(2)); 57026653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman break; 57126653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 57226653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 57326653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman CurDAG->SelectNodeTo(N, Ty, PPC::FNEG, Val); 57426653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman break; 57526653500bbbc21cd1c2d12ecc433fa439536b657Nate Begeman } 5766a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman case ISD::FSQRT: { 5776a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman MVT::ValueType Ty = N->getValueType(0); 5786a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman CurDAG->SelectNodeTo(N, Ty, Ty == MVT::f64 ? PPC::FSQRT : PPC::FSQRTS, 5796a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman Select(N->getOperand(0))); 5806a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman break; 5816a7d61179c77c23dc22cd64e5e922bc40ed234e9Nate Begeman } 582a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case ISD::RET: { 583a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Chain = Select(N->getOperand(0)); // Token chain. 584a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 585a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (N->getNumOperands() > 1) { 586a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner SDOperand Val = Select(N->getOperand(1)); 587a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner switch (N->getOperand(1).getValueType()) { 588a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner default: assert(0 && "Unknown return type!"); 589a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case MVT::f64: 590a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case MVT::f32: 591a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Chain = CurDAG->getCopyToReg(Chain, PPC::F1, Val); 592a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 593a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner case MVT::i32: 594a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Chain = CurDAG->getCopyToReg(Chain, PPC::R3, Val); 595a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 596a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 597a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 598a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner if (N->getNumOperands() > 2) { 599a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner assert(N->getOperand(1).getValueType() == MVT::i32 && 600a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getOperand(2).getValueType() == MVT::i32 && 601a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner N->getNumOperands() == 2 && "Unknown two-register ret value!"); 602a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Val = Select(N->getOperand(2)); 603a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner Chain = CurDAG->getCopyToReg(Chain, PPC::R4, Val); 604a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 605a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 606a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 607a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner // Finally, select this to a blr (return) instruction. 608a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner CurDAG->SelectNodeTo(N, MVT::Other, PPC::BLR, Chain); 609a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner break; 610a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 611a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner } 612a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return SDOperand(N, 0); 613a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 614a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 615a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 616a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner/// createPPC32ISelDag - This pass converts a legalized DAG into a 617a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner/// PowerPC-specific DAG, ready for instruction scheduling. 618a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner/// 619a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris LattnerFunctionPass *llvm::createPPC32ISelDag(TargetMachine &TM) { 620a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner return new PPC32DAGToDAGISel(TM); 621a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner} 622a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00eChris Lattner 623