1*81ad6265SDimitry Andric //===- LoongArchMatInt.cpp - Immediate materialisation ---------*- C++ -*--===// 2*81ad6265SDimitry Andric // 3*81ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*81ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*81ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*81ad6265SDimitry Andric // 7*81ad6265SDimitry Andric //===----------------------------------------------------------------------===// 8*81ad6265SDimitry Andric 9*81ad6265SDimitry Andric #include "LoongArchMatInt.h" 10*81ad6265SDimitry Andric #include "MCTargetDesc/LoongArchMCTargetDesc.h" 11*81ad6265SDimitry Andric #include "llvm/Support/MathExtras.h" 12*81ad6265SDimitry Andric 13*81ad6265SDimitry Andric using namespace llvm; 14*81ad6265SDimitry Andric generateInstSeq(int64_t Val)15*81ad6265SDimitry AndricLoongArchMatInt::InstSeq LoongArchMatInt::generateInstSeq(int64_t Val) { 16*81ad6265SDimitry Andric // Val: 17*81ad6265SDimitry Andric // | hi32 | lo32 | 18*81ad6265SDimitry Andric // +-----------+------------------+------------------+-----------+ 19*81ad6265SDimitry Andric // | Highest12 | Higher20 | Hi20 | Lo12 | 20*81ad6265SDimitry Andric // +-----------+------------------+------------------+-----------+ 21*81ad6265SDimitry Andric // 63 52 51 32 31 12 11 0 22*81ad6265SDimitry Andric // 23*81ad6265SDimitry Andric const int64_t Highest12 = Val >> 52 & 0xFFF; 24*81ad6265SDimitry Andric const int64_t Higher20 = Val >> 32 & 0xFFFFF; 25*81ad6265SDimitry Andric const int64_t Hi20 = Val >> 12 & 0xFFFFF; 26*81ad6265SDimitry Andric const int64_t Lo12 = Val & 0xFFF; 27*81ad6265SDimitry Andric InstSeq Insts; 28*81ad6265SDimitry Andric 29*81ad6265SDimitry Andric if (Highest12 != 0 && SignExtend64<52>(Val) == 0) { 30*81ad6265SDimitry Andric Insts.push_back(Inst(LoongArch::LU52I_D, SignExtend64<12>(Highest12))); 31*81ad6265SDimitry Andric return Insts; 32*81ad6265SDimitry Andric } 33*81ad6265SDimitry Andric 34*81ad6265SDimitry Andric if (Hi20 == 0) 35*81ad6265SDimitry Andric Insts.push_back(Inst(LoongArch::ORI, Lo12)); 36*81ad6265SDimitry Andric else if (SignExtend32<1>(Lo12 >> 11) == SignExtend32<20>(Hi20)) 37*81ad6265SDimitry Andric Insts.push_back(Inst(LoongArch::ADDI_W, SignExtend64<12>(Lo12))); 38*81ad6265SDimitry Andric else { 39*81ad6265SDimitry Andric Insts.push_back(Inst(LoongArch::LU12I_W, SignExtend64<20>(Hi20))); 40*81ad6265SDimitry Andric if (Lo12 != 0) 41*81ad6265SDimitry Andric Insts.push_back(Inst(LoongArch::ORI, Lo12)); 42*81ad6265SDimitry Andric } 43*81ad6265SDimitry Andric 44*81ad6265SDimitry Andric if (SignExtend32<1>(Hi20 >> 19) != SignExtend32<20>(Higher20)) 45*81ad6265SDimitry Andric Insts.push_back(Inst(LoongArch::LU32I_D, SignExtend64<20>(Higher20))); 46*81ad6265SDimitry Andric 47*81ad6265SDimitry Andric if (SignExtend32<1>(Higher20 >> 19) != SignExtend32<12>(Highest12)) 48*81ad6265SDimitry Andric Insts.push_back(Inst(LoongArch::LU52I_D, SignExtend64<12>(Highest12))); 49*81ad6265SDimitry Andric 50*81ad6265SDimitry Andric return Insts; 51*81ad6265SDimitry Andric } 52