LLVM: lib/Target/LoongArch/MCTargetDesc/LoongArchMatInt.cpp Source File (original) (raw)
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23 const int64_t Highest12 = Val >> 52 & 0xFFF;
24 const int64_t Higher20 = Val >> 32 & 0xFFFFF;
25 const int64_t Hi20 = Val >> 12 & 0xFFFFF;
26 const int64_t Lo12 = Val & 0xFFF;
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32 return Insts;
33 }
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36 if (Hi20 == 0)
40 else {
42 if (Lo12 != 0)
44 }
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56 if (N < 3)
57 return Insts;
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76 switch (Insts[0].Opc) {
77 default:
79 break;
80 case LoongArch::LU12I_W:
81 if (Insts[1].Opc == LoongArch::ORI) {
82 TmpVal1 = Insts[1].Imm;
83 if (N == 3)
84 break;
85 TmpVal2 = static_cast<uint64_t>(Insts[3].Imm) << 52 | TmpVal1;
86 }
87 TmpVal1 |= static_cast<uint64_t>(Insts[0].Imm) << 12;
88 break;
89 case LoongArch::ORI:
90 case LoongArch::ADDI_W:
91 TmpVal1 = Insts[0].Imm;
92 break;
93 }
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96 uint64_t HighMask = ~((1ULL << (Msb + 1)) - 1);
97 for (; Msb < 64; ++Msb, HighMask = HighMask << 1) {
98 for (uint64_t Lsb = Msb; Lsb > 0; --Lsb) {
99 uint64_t LowMask = (1ULL << Lsb) - 1;
100 uint64_t Mask = HighMask | LowMask;
101 uint64_t LsbToZero = TmpVal1 & ((1ULL << (Msb - Lsb + 1)) - 1);
102 uint64_t MsbToLsb = LsbToZero << Lsb;
103 if ((MsbToLsb | (TmpVal1 & Mask)) == (uint64_t)Val) {
104 if (Insts[1].Opc == LoongArch::ORI && N == 3)
105 Insts[0] = Insts[1];
107 Insts.push_back(Inst(LoongArch::BSTRINS_D, Msb << 32 | Lsb));
108 return Insts;
109 }
110 if (TmpVal2 != 0) {
111 LsbToZero = TmpVal2 & ((1ULL << (Msb - Lsb + 1)) - 1);
112 MsbToLsb = LsbToZero << Lsb;
113 if ((MsbToLsb | (TmpVal2 & Mask)) == (uint64_t)Val) {
114 Insts[0] = Insts[1];
115 Insts[1] = Insts[3];
117 Insts.push_back(Inst(LoongArch::BSTRINS_D, Msb << 32 | Lsb));
118 return Insts;
119 }
120 }
121 }
122 }
123
124 return Insts;
125}