Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "arm_lir.h" |
| 18 | #include "codegen_arm.h" |
| 19 | #include "dex/quick/mir_to_lir-inl.h" |
buzbee | b5860fb | 2014-06-21 15:31:01 -0700 | [diff] [blame^] | 20 | #include "dex/reg_storage_eq.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 21 | |
| 22 | namespace art { |
| 23 | |
| 24 | /* This file contains codegen for the Thumb ISA. */ |
| 25 | |
buzbee | 0d82948 | 2013-10-11 15:24:55 -0700 | [diff] [blame] | 26 | static int32_t EncodeImmSingle(int32_t value) { |
| 27 | int32_t res; |
| 28 | int32_t bit_a = (value & 0x80000000) >> 31; |
| 29 | int32_t not_bit_b = (value & 0x40000000) >> 30; |
| 30 | int32_t bit_b = (value & 0x20000000) >> 29; |
| 31 | int32_t b_smear = (value & 0x3e000000) >> 25; |
| 32 | int32_t slice = (value & 0x01f80000) >> 19; |
| 33 | int32_t zeroes = (value & 0x0007ffff); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 34 | if (zeroes != 0) |
| 35 | return -1; |
| 36 | if (bit_b) { |
| 37 | if ((not_bit_b != 0) || (b_smear != 0x1f)) |
| 38 | return -1; |
| 39 | } else { |
| 40 | if ((not_bit_b != 1) || (b_smear != 0x0)) |
| 41 | return -1; |
| 42 | } |
| 43 | res = (bit_a << 7) | (bit_b << 6) | slice; |
| 44 | return res; |
| 45 | } |
| 46 | |
| 47 | /* |
| 48 | * Determine whether value can be encoded as a Thumb2 floating point |
| 49 | * immediate. If not, return -1. If so return encoded 8-bit value. |
| 50 | */ |
buzbee | 0d82948 | 2013-10-11 15:24:55 -0700 | [diff] [blame] | 51 | static int32_t EncodeImmDouble(int64_t value) { |
| 52 | int32_t res; |
Ian Rogers | 0f67847 | 2014-03-10 16:18:37 -0700 | [diff] [blame] | 53 | int32_t bit_a = (value & INT64_C(0x8000000000000000)) >> 63; |
| 54 | int32_t not_bit_b = (value & INT64_C(0x4000000000000000)) >> 62; |
| 55 | int32_t bit_b = (value & INT64_C(0x2000000000000000)) >> 61; |
| 56 | int32_t b_smear = (value & INT64_C(0x3fc0000000000000)) >> 54; |
| 57 | int32_t slice = (value & INT64_C(0x003f000000000000)) >> 48; |
| 58 | uint64_t zeroes = (value & INT64_C(0x0000ffffffffffff)); |
buzbee | 0d82948 | 2013-10-11 15:24:55 -0700 | [diff] [blame] | 59 | if (zeroes != 0ull) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 60 | return -1; |
| 61 | if (bit_b) { |
| 62 | if ((not_bit_b != 0) || (b_smear != 0xff)) |
| 63 | return -1; |
| 64 | } else { |
| 65 | if ((not_bit_b != 1) || (b_smear != 0x0)) |
| 66 | return -1; |
| 67 | } |
| 68 | res = (bit_a << 7) | (bit_b << 6) | slice; |
| 69 | return res; |
| 70 | } |
| 71 | |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 72 | LIR* ArmMir2Lir::LoadFPConstantValue(int r_dest, int value) { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 73 | DCHECK(RegStorage::IsSingle(r_dest)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 74 | if (value == 0) { |
| 75 | // TODO: we need better info about the target CPU. a vector exclusive or |
| 76 | // would probably be better here if we could rely on its existance. |
| 77 | // Load an immediate +2.0 (which encodes to 0) |
| 78 | NewLIR2(kThumb2Vmovs_IMM8, r_dest, 0); |
| 79 | // +0.0 = +2.0 - +2.0 |
| 80 | return NewLIR3(kThumb2Vsubs, r_dest, r_dest, r_dest); |
| 81 | } else { |
| 82 | int encoded_imm = EncodeImmSingle(value); |
| 83 | if (encoded_imm >= 0) { |
| 84 | return NewLIR2(kThumb2Vmovs_IMM8, r_dest, encoded_imm); |
| 85 | } |
| 86 | } |
| 87 | LIR* data_target = ScanLiteralPool(literal_list_, value, 0); |
| 88 | if (data_target == NULL) { |
| 89 | data_target = AddWordData(&literal_list_, value); |
| 90 | } |
Vladimir Marko | 8dea81c | 2014-06-06 14:50:36 +0100 | [diff] [blame] | 91 | ScopedMemRefType mem_ref_type(this, ResourceMask::kLiteral); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 92 | LIR* load_pc_rel = RawLIR(current_dalvik_offset_, kThumb2Vldrs, |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 93 | r_dest, rs_r15pc.GetReg(), 0, 0, 0, data_target); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 94 | AppendLIR(load_pc_rel); |
| 95 | return load_pc_rel; |
| 96 | } |
| 97 | |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 98 | static int LeadingZeros(uint32_t val) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 99 | uint32_t alt; |
buzbee | 0d82948 | 2013-10-11 15:24:55 -0700 | [diff] [blame] | 100 | int32_t n; |
| 101 | int32_t count; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 102 | |
| 103 | count = 16; |
| 104 | n = 32; |
| 105 | do { |
| 106 | alt = val >> count; |
| 107 | if (alt != 0) { |
| 108 | n = n - count; |
| 109 | val = alt; |
| 110 | } |
| 111 | count >>= 1; |
| 112 | } while (count); |
| 113 | return n - val; |
| 114 | } |
| 115 | |
| 116 | /* |
| 117 | * Determine whether value can be encoded as a Thumb2 modified |
| 118 | * immediate. If not, return -1. If so, return i:imm3:a:bcdefgh form. |
| 119 | */ |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 120 | int ArmMir2Lir::ModifiedImmediate(uint32_t value) { |
buzbee | 0d82948 | 2013-10-11 15:24:55 -0700 | [diff] [blame] | 121 | int32_t z_leading; |
| 122 | int32_t z_trailing; |
Brian Carlstrom | 6f485c6 | 2013-07-18 15:35:35 -0700 | [diff] [blame] | 123 | uint32_t b0 = value & 0xff; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 124 | |
Brian Carlstrom | 6f485c6 | 2013-07-18 15:35:35 -0700 | [diff] [blame] | 125 | /* Note: case of value==0 must use 0:000:0:0000000 encoding */ |
| 126 | if (value <= 0xFF) |
| 127 | return b0; // 0:000:a:bcdefgh |
| 128 | if (value == ((b0 << 16) | b0)) |
| 129 | return (0x1 << 8) | b0; /* 0:001:a:bcdefgh */ |
| 130 | if (value == ((b0 << 24) | (b0 << 16) | (b0 << 8) | b0)) |
| 131 | return (0x3 << 8) | b0; /* 0:011:a:bcdefgh */ |
| 132 | b0 = (value >> 8) & 0xff; |
| 133 | if (value == ((b0 << 24) | (b0 << 8))) |
| 134 | return (0x2 << 8) | b0; /* 0:010:a:bcdefgh */ |
| 135 | /* Can we do it with rotation? */ |
| 136 | z_leading = LeadingZeros(value); |
| 137 | z_trailing = 32 - LeadingZeros(~value & (value - 1)); |
| 138 | /* A run of eight or fewer active bits? */ |
| 139 | if ((z_leading + z_trailing) < 24) |
| 140 | return -1; /* No - bail */ |
| 141 | /* left-justify the constant, discarding msb (known to be 1) */ |
| 142 | value <<= z_leading + 1; |
| 143 | /* Create bcdefgh */ |
| 144 | value >>= 25; |
| 145 | /* Put it all together */ |
| 146 | return value | ((0x8 + z_leading) << 7); /* [01000..11111]:bcdefgh */ |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 147 | } |
| 148 | |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 149 | bool ArmMir2Lir::InexpensiveConstantInt(int32_t value) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 150 | return (ModifiedImmediate(value) >= 0) || (ModifiedImmediate(~value) >= 0); |
| 151 | } |
| 152 | |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 153 | bool ArmMir2Lir::InexpensiveConstantFloat(int32_t value) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 154 | return EncodeImmSingle(value) >= 0; |
| 155 | } |
| 156 | |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 157 | bool ArmMir2Lir::InexpensiveConstantLong(int64_t value) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 158 | return InexpensiveConstantInt(High32Bits(value)) && InexpensiveConstantInt(Low32Bits(value)); |
| 159 | } |
| 160 | |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 161 | bool ArmMir2Lir::InexpensiveConstantDouble(int64_t value) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 162 | return EncodeImmDouble(value) >= 0; |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Load a immediate using a shortcut if possible; otherwise |
| 167 | * grab from the per-translation literal pool. |
| 168 | * |
| 169 | * No additional register clobbering operation performed. Use this version when |
| 170 | * 1) r_dest is freshly returned from AllocTemp or |
| 171 | * 2) The codegen is under fixed register usage |
| 172 | */ |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 173 | LIR* ArmMir2Lir::LoadConstantNoClobber(RegStorage r_dest, int value) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 174 | LIR* res; |
| 175 | int mod_imm; |
| 176 | |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 177 | if (r_dest.IsFloat()) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 178 | return LoadFPConstantValue(r_dest.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | /* See if the value can be constructed cheaply */ |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 182 | if (r_dest.Low8() && (value >= 0) && (value <= 255)) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 183 | return NewLIR2(kThumbMovImm, r_dest.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 184 | } |
| 185 | /* Check Modified immediate special cases */ |
| 186 | mod_imm = ModifiedImmediate(value); |
| 187 | if (mod_imm >= 0) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 188 | res = NewLIR2(kThumb2MovI8M, r_dest.GetReg(), mod_imm); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 189 | return res; |
| 190 | } |
| 191 | mod_imm = ModifiedImmediate(~value); |
| 192 | if (mod_imm >= 0) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 193 | res = NewLIR2(kThumb2MvnI8M, r_dest.GetReg(), mod_imm); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 194 | return res; |
| 195 | } |
| 196 | /* 16-bit immediate? */ |
| 197 | if ((value & 0xffff) == value) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 198 | res = NewLIR2(kThumb2MovImm16, r_dest.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 199 | return res; |
| 200 | } |
| 201 | /* Do a low/high pair */ |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 202 | res = NewLIR2(kThumb2MovImm16, r_dest.GetReg(), Low16Bits(value)); |
| 203 | NewLIR2(kThumb2MovImm16H, r_dest.GetReg(), High16Bits(value)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 204 | return res; |
| 205 | } |
| 206 | |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 207 | LIR* ArmMir2Lir::OpUnconditionalBranch(LIR* target) { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 208 | LIR* res = NewLIR1(kThumbBUncond, 0 /* offset to be patched during assembly */); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 209 | res->target = target; |
| 210 | return res; |
| 211 | } |
| 212 | |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 213 | LIR* ArmMir2Lir::OpCondBranch(ConditionCode cc, LIR* target) { |
Vladimir Marko | 58af1f9 | 2013-12-19 13:31:15 +0000 | [diff] [blame] | 214 | // This is kThumb2BCond instead of kThumbBCond for performance reasons. The assembly |
| 215 | // time required for a new pass after kThumbBCond is fixed up to kThumb2BCond is |
| 216 | // substantial. |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 217 | LIR* branch = NewLIR2(kThumb2BCond, 0 /* offset to be patched */, |
| 218 | ArmConditionEncoding(cc)); |
| 219 | branch->target = target; |
| 220 | return branch; |
| 221 | } |
| 222 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 223 | LIR* ArmMir2Lir::OpReg(OpKind op, RegStorage r_dest_src) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 224 | ArmOpcode opcode = kThumbBkpt; |
| 225 | switch (op) { |
| 226 | case kOpBlx: |
| 227 | opcode = kThumbBlxR; |
| 228 | break; |
Brian Carlstrom | 60d7a65 | 2014-03-13 18:10:08 -0700 | [diff] [blame] | 229 | case kOpBx: |
| 230 | opcode = kThumbBx; |
| 231 | break; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 232 | default: |
| 233 | LOG(FATAL) << "Bad opcode " << op; |
| 234 | } |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 235 | return NewLIR1(opcode, r_dest_src.GetReg()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 236 | } |
| 237 | |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 238 | LIR* ArmMir2Lir::OpRegRegShift(OpKind op, RegStorage r_dest_src1, RegStorage r_src2, |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 239 | int shift) { |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 240 | bool thumb_form = |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 241 | ((shift == 0) && r_dest_src1.Low8() && r_src2.Low8()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 242 | ArmOpcode opcode = kThumbBkpt; |
| 243 | switch (op) { |
| 244 | case kOpAdc: |
| 245 | opcode = (thumb_form) ? kThumbAdcRR : kThumb2AdcRRR; |
| 246 | break; |
| 247 | case kOpAnd: |
| 248 | opcode = (thumb_form) ? kThumbAndRR : kThumb2AndRRR; |
| 249 | break; |
| 250 | case kOpBic: |
| 251 | opcode = (thumb_form) ? kThumbBicRR : kThumb2BicRRR; |
| 252 | break; |
| 253 | case kOpCmn: |
| 254 | DCHECK_EQ(shift, 0); |
| 255 | opcode = (thumb_form) ? kThumbCmnRR : kThumb2CmnRR; |
| 256 | break; |
| 257 | case kOpCmp: |
| 258 | if (thumb_form) |
| 259 | opcode = kThumbCmpRR; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 260 | else if ((shift == 0) && !r_dest_src1.Low8() && !r_src2.Low8()) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 261 | opcode = kThumbCmpHH; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 262 | else if ((shift == 0) && r_dest_src1.Low8()) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 263 | opcode = kThumbCmpLH; |
| 264 | else if (shift == 0) |
| 265 | opcode = kThumbCmpHL; |
| 266 | else |
| 267 | opcode = kThumb2CmpRR; |
| 268 | break; |
| 269 | case kOpXor: |
| 270 | opcode = (thumb_form) ? kThumbEorRR : kThumb2EorRRR; |
| 271 | break; |
| 272 | case kOpMov: |
| 273 | DCHECK_EQ(shift, 0); |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 274 | if (r_dest_src1.Low8() && r_src2.Low8()) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 275 | opcode = kThumbMovRR; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 276 | else if (!r_dest_src1.Low8() && !r_src2.Low8()) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 277 | opcode = kThumbMovRR_H2H; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 278 | else if (r_dest_src1.Low8()) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 279 | opcode = kThumbMovRR_H2L; |
| 280 | else |
| 281 | opcode = kThumbMovRR_L2H; |
| 282 | break; |
| 283 | case kOpMul: |
| 284 | DCHECK_EQ(shift, 0); |
| 285 | opcode = (thumb_form) ? kThumbMul : kThumb2MulRRR; |
| 286 | break; |
| 287 | case kOpMvn: |
| 288 | opcode = (thumb_form) ? kThumbMvn : kThumb2MnvRR; |
| 289 | break; |
| 290 | case kOpNeg: |
| 291 | DCHECK_EQ(shift, 0); |
| 292 | opcode = (thumb_form) ? kThumbNeg : kThumb2NegRR; |
| 293 | break; |
| 294 | case kOpOr: |
| 295 | opcode = (thumb_form) ? kThumbOrr : kThumb2OrrRRR; |
| 296 | break; |
| 297 | case kOpSbc: |
| 298 | opcode = (thumb_form) ? kThumbSbc : kThumb2SbcRRR; |
| 299 | break; |
| 300 | case kOpTst: |
| 301 | opcode = (thumb_form) ? kThumbTst : kThumb2TstRR; |
| 302 | break; |
| 303 | case kOpLsl: |
| 304 | DCHECK_EQ(shift, 0); |
| 305 | opcode = (thumb_form) ? kThumbLslRR : kThumb2LslRRR; |
| 306 | break; |
| 307 | case kOpLsr: |
| 308 | DCHECK_EQ(shift, 0); |
| 309 | opcode = (thumb_form) ? kThumbLsrRR : kThumb2LsrRRR; |
| 310 | break; |
| 311 | case kOpAsr: |
| 312 | DCHECK_EQ(shift, 0); |
| 313 | opcode = (thumb_form) ? kThumbAsrRR : kThumb2AsrRRR; |
| 314 | break; |
| 315 | case kOpRor: |
| 316 | DCHECK_EQ(shift, 0); |
| 317 | opcode = (thumb_form) ? kThumbRorRR : kThumb2RorRRR; |
| 318 | break; |
| 319 | case kOpAdd: |
| 320 | opcode = (thumb_form) ? kThumbAddRRR : kThumb2AddRRR; |
| 321 | break; |
| 322 | case kOpSub: |
| 323 | opcode = (thumb_form) ? kThumbSubRRR : kThumb2SubRRR; |
| 324 | break; |
Vladimir Marko | a8b4caf | 2013-10-24 15:08:57 +0100 | [diff] [blame] | 325 | case kOpRev: |
| 326 | DCHECK_EQ(shift, 0); |
| 327 | if (!thumb_form) { |
| 328 | // Binary, but rm is encoded twice. |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 329 | return NewLIR3(kThumb2RevRR, r_dest_src1.GetReg(), r_src2.GetReg(), r_src2.GetReg()); |
Vladimir Marko | a8b4caf | 2013-10-24 15:08:57 +0100 | [diff] [blame] | 330 | } |
| 331 | opcode = kThumbRev; |
| 332 | break; |
| 333 | case kOpRevsh: |
| 334 | DCHECK_EQ(shift, 0); |
| 335 | if (!thumb_form) { |
| 336 | // Binary, but rm is encoded twice. |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 337 | return NewLIR3(kThumb2RevshRR, r_dest_src1.GetReg(), r_src2.GetReg(), r_src2.GetReg()); |
Vladimir Marko | a8b4caf | 2013-10-24 15:08:57 +0100 | [diff] [blame] | 338 | } |
| 339 | opcode = kThumbRevsh; |
| 340 | break; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 341 | case kOp2Byte: |
| 342 | DCHECK_EQ(shift, 0); |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 343 | return NewLIR4(kThumb2Sbfx, r_dest_src1.GetReg(), r_src2.GetReg(), 0, 8); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 344 | case kOp2Short: |
| 345 | DCHECK_EQ(shift, 0); |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 346 | return NewLIR4(kThumb2Sbfx, r_dest_src1.GetReg(), r_src2.GetReg(), 0, 16); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 347 | case kOp2Char: |
| 348 | DCHECK_EQ(shift, 0); |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 349 | return NewLIR4(kThumb2Ubfx, r_dest_src1.GetReg(), r_src2.GetReg(), 0, 16); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 350 | default: |
| 351 | LOG(FATAL) << "Bad opcode: " << op; |
| 352 | break; |
| 353 | } |
buzbee | 409fe94 | 2013-10-11 10:49:56 -0700 | [diff] [blame] | 354 | DCHECK(!IsPseudoLirOp(opcode)); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 355 | if (EncodingMap[opcode].flags & IS_BINARY_OP) { |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 356 | return NewLIR2(opcode, r_dest_src1.GetReg(), r_src2.GetReg()); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 357 | } else if (EncodingMap[opcode].flags & IS_TERTIARY_OP) { |
| 358 | if (EncodingMap[opcode].field_loc[2].kind == kFmtShift) { |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 359 | return NewLIR3(opcode, r_dest_src1.GetReg(), r_src2.GetReg(), shift); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 360 | } else { |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 361 | return NewLIR3(opcode, r_dest_src1.GetReg(), r_dest_src1.GetReg(), r_src2.GetReg()); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 362 | } |
| 363 | } else if (EncodingMap[opcode].flags & IS_QUAD_OP) { |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 364 | return NewLIR4(opcode, r_dest_src1.GetReg(), r_dest_src1.GetReg(), r_src2.GetReg(), shift); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 365 | } else { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 366 | LOG(FATAL) << "Unexpected encoding operand count"; |
| 367 | return NULL; |
| 368 | } |
| 369 | } |
| 370 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 371 | LIR* ArmMir2Lir::OpRegReg(OpKind op, RegStorage r_dest_src1, RegStorage r_src2) { |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 372 | return OpRegRegShift(op, r_dest_src1, r_src2, 0); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 373 | } |
| 374 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 375 | LIR* ArmMir2Lir::OpMovRegMem(RegStorage r_dest, RegStorage r_base, int offset, MoveType move_type) { |
Razvan A Lupusoru | 2c498d1 | 2014-01-29 16:02:57 -0800 | [diff] [blame] | 376 | UNIMPLEMENTED(FATAL); |
| 377 | return nullptr; |
| 378 | } |
| 379 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 380 | LIR* ArmMir2Lir::OpMovMemReg(RegStorage r_base, int offset, RegStorage r_src, MoveType move_type) { |
Razvan A Lupusoru | 2c498d1 | 2014-01-29 16:02:57 -0800 | [diff] [blame] | 381 | UNIMPLEMENTED(FATAL); |
| 382 | return nullptr; |
| 383 | } |
| 384 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 385 | LIR* ArmMir2Lir::OpCondRegReg(OpKind op, ConditionCode cc, RegStorage r_dest, RegStorage r_src) { |
Razvan A Lupusoru | bd288c2 | 2013-12-20 17:27:23 -0800 | [diff] [blame] | 386 | LOG(FATAL) << "Unexpected use of OpCondRegReg for Arm"; |
| 387 | return NULL; |
| 388 | } |
| 389 | |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 390 | LIR* ArmMir2Lir::OpRegRegRegShift(OpKind op, RegStorage r_dest, RegStorage r_src1, |
| 391 | RegStorage r_src2, int shift) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 392 | ArmOpcode opcode = kThumbBkpt; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 393 | bool thumb_form = (shift == 0) && r_dest.Low8() && r_src1.Low8() && r_src2.Low8(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 394 | switch (op) { |
| 395 | case kOpAdd: |
| 396 | opcode = (thumb_form) ? kThumbAddRRR : kThumb2AddRRR; |
| 397 | break; |
| 398 | case kOpSub: |
| 399 | opcode = (thumb_form) ? kThumbSubRRR : kThumb2SubRRR; |
| 400 | break; |
| 401 | case kOpRsub: |
| 402 | opcode = kThumb2RsubRRR; |
| 403 | break; |
| 404 | case kOpAdc: |
| 405 | opcode = kThumb2AdcRRR; |
| 406 | break; |
| 407 | case kOpAnd: |
| 408 | opcode = kThumb2AndRRR; |
| 409 | break; |
| 410 | case kOpBic: |
| 411 | opcode = kThumb2BicRRR; |
| 412 | break; |
| 413 | case kOpXor: |
| 414 | opcode = kThumb2EorRRR; |
| 415 | break; |
| 416 | case kOpMul: |
| 417 | DCHECK_EQ(shift, 0); |
| 418 | opcode = kThumb2MulRRR; |
| 419 | break; |
Dave Allison | 7020278 | 2013-10-22 17:52:19 -0700 | [diff] [blame] | 420 | case kOpDiv: |
| 421 | DCHECK_EQ(shift, 0); |
| 422 | opcode = kThumb2SdivRRR; |
| 423 | break; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 424 | case kOpOr: |
| 425 | opcode = kThumb2OrrRRR; |
| 426 | break; |
| 427 | case kOpSbc: |
| 428 | opcode = kThumb2SbcRRR; |
| 429 | break; |
| 430 | case kOpLsl: |
| 431 | DCHECK_EQ(shift, 0); |
| 432 | opcode = kThumb2LslRRR; |
| 433 | break; |
| 434 | case kOpLsr: |
| 435 | DCHECK_EQ(shift, 0); |
| 436 | opcode = kThumb2LsrRRR; |
| 437 | break; |
| 438 | case kOpAsr: |
| 439 | DCHECK_EQ(shift, 0); |
| 440 | opcode = kThumb2AsrRRR; |
| 441 | break; |
| 442 | case kOpRor: |
| 443 | DCHECK_EQ(shift, 0); |
| 444 | opcode = kThumb2RorRRR; |
| 445 | break; |
| 446 | default: |
| 447 | LOG(FATAL) << "Bad opcode: " << op; |
| 448 | break; |
| 449 | } |
buzbee | 409fe94 | 2013-10-11 10:49:56 -0700 | [diff] [blame] | 450 | DCHECK(!IsPseudoLirOp(opcode)); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 451 | if (EncodingMap[opcode].flags & IS_QUAD_OP) { |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 452 | return NewLIR4(opcode, r_dest.GetReg(), r_src1.GetReg(), r_src2.GetReg(), shift); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 453 | } else { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 454 | DCHECK(EncodingMap[opcode].flags & IS_TERTIARY_OP); |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 455 | return NewLIR3(opcode, r_dest.GetReg(), r_src1.GetReg(), r_src2.GetReg()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 456 | } |
| 457 | } |
| 458 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 459 | LIR* ArmMir2Lir::OpRegRegReg(OpKind op, RegStorage r_dest, RegStorage r_src1, RegStorage r_src2) { |
Ian Rogers | e2143c0 | 2014-03-28 08:47:16 -0700 | [diff] [blame] | 460 | return OpRegRegRegShift(op, r_dest, r_src1, r_src2, 0); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 461 | } |
| 462 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 463 | LIR* ArmMir2Lir::OpRegRegImm(OpKind op, RegStorage r_dest, RegStorage r_src1, int value) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 464 | LIR* res; |
| 465 | bool neg = (value < 0); |
buzbee | 0d82948 | 2013-10-11 15:24:55 -0700 | [diff] [blame] | 466 | int32_t abs_value = (neg) ? -value : value; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 467 | ArmOpcode opcode = kThumbBkpt; |
| 468 | ArmOpcode alt_opcode = kThumbBkpt; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 469 | bool all_low_regs = r_dest.Low8() && r_src1.Low8(); |
buzbee | 0d82948 | 2013-10-11 15:24:55 -0700 | [diff] [blame] | 470 | int32_t mod_imm = ModifiedImmediate(value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 471 | |
| 472 | switch (op) { |
| 473 | case kOpLsl: |
| 474 | if (all_low_regs) |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 475 | return NewLIR3(kThumbLslRRI5, r_dest.GetReg(), r_src1.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 476 | else |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 477 | return NewLIR3(kThumb2LslRRI5, r_dest.GetReg(), r_src1.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 478 | case kOpLsr: |
| 479 | if (all_low_regs) |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 480 | return NewLIR3(kThumbLsrRRI5, r_dest.GetReg(), r_src1.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 481 | else |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 482 | return NewLIR3(kThumb2LsrRRI5, r_dest.GetReg(), r_src1.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 483 | case kOpAsr: |
| 484 | if (all_low_regs) |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 485 | return NewLIR3(kThumbAsrRRI5, r_dest.GetReg(), r_src1.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 486 | else |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 487 | return NewLIR3(kThumb2AsrRRI5, r_dest.GetReg(), r_src1.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 488 | case kOpRor: |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 489 | return NewLIR3(kThumb2RorRRI5, r_dest.GetReg(), r_src1.GetReg(), value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 490 | case kOpAdd: |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 491 | if (r_dest.Low8() && (r_src1 == rs_r13sp) && (value <= 1020) && ((value & 0x3) == 0)) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 492 | return NewLIR3(kThumbAddSpRel, r_dest.GetReg(), r_src1.GetReg(), value >> 2); |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 493 | } else if (r_dest.Low8() && (r_src1 == rs_r15pc) && |
Brian Carlstrom | 38f85e4 | 2013-07-18 14:45:22 -0700 | [diff] [blame] | 494 | (value <= 1020) && ((value & 0x3) == 0)) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 495 | return NewLIR3(kThumbAddPcRel, r_dest.GetReg(), r_src1.GetReg(), value >> 2); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 496 | } |
| 497 | // Note: intentional fallthrough |
| 498 | case kOpSub: |
| 499 | if (all_low_regs && ((abs_value & 0x7) == abs_value)) { |
| 500 | if (op == kOpAdd) |
| 501 | opcode = (neg) ? kThumbSubRRI3 : kThumbAddRRI3; |
| 502 | else |
| 503 | opcode = (neg) ? kThumbAddRRI3 : kThumbSubRRI3; |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 504 | return NewLIR3(opcode, r_dest.GetReg(), r_src1.GetReg(), abs_value); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 505 | } |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 506 | if (mod_imm < 0) { |
| 507 | mod_imm = ModifiedImmediate(-value); |
| 508 | if (mod_imm >= 0) { |
| 509 | op = (op == kOpAdd) ? kOpSub : kOpAdd; |
| 510 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 511 | } |
Vladimir Marko | dbb8c49 | 2014-02-28 17:36:39 +0000 | [diff] [blame] | 512 | if (mod_imm < 0 && (abs_value & 0x3ff) == abs_value) { |
| 513 | // This is deliberately used only if modified immediate encoding is inadequate since |
| 514 | // we sometimes actually use the flags for small values but not necessarily low regs. |
| 515 | if (op == kOpAdd) |
| 516 | opcode = (neg) ? kThumb2SubRRI12 : kThumb2AddRRI12; |
| 517 | else |
| 518 | opcode = (neg) ? kThumb2AddRRI12 : kThumb2SubRRI12; |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 519 | return NewLIR3(opcode, r_dest.GetReg(), r_src1.GetReg(), abs_value); |
Vladimir Marko | dbb8c49 | 2014-02-28 17:36:39 +0000 | [diff] [blame] | 520 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 521 | if (op == kOpSub) { |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 522 | opcode = kThumb2SubRRI8M; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 523 | alt_opcode = kThumb2SubRRR; |
| 524 | } else { |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 525 | opcode = kThumb2AddRRI8M; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 526 | alt_opcode = kThumb2AddRRR; |
| 527 | } |
| 528 | break; |
| 529 | case kOpRsub: |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 530 | opcode = kThumb2RsubRRI8M; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 531 | alt_opcode = kThumb2RsubRRR; |
| 532 | break; |
| 533 | case kOpAdc: |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 534 | opcode = kThumb2AdcRRI8M; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 535 | alt_opcode = kThumb2AdcRRR; |
| 536 | break; |
| 537 | case kOpSbc: |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 538 | opcode = kThumb2SbcRRI8M; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 539 | alt_opcode = kThumb2SbcRRR; |
| 540 | break; |
| 541 | case kOpOr: |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 542 | opcode = kThumb2OrrRRI8M; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 543 | alt_opcode = kThumb2OrrRRR; |
| 544 | break; |
| 545 | case kOpAnd: |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 546 | if (mod_imm < 0) { |
| 547 | mod_imm = ModifiedImmediate(~value); |
| 548 | if (mod_imm >= 0) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 549 | return NewLIR3(kThumb2BicRRI8M, r_dest.GetReg(), r_src1.GetReg(), mod_imm); |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 550 | } |
| 551 | } |
| 552 | opcode = kThumb2AndRRI8M; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 553 | alt_opcode = kThumb2AndRRR; |
| 554 | break; |
| 555 | case kOpXor: |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 556 | opcode = kThumb2EorRRI8M; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 557 | alt_opcode = kThumb2EorRRR; |
| 558 | break; |
| 559 | case kOpMul: |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 560 | // TUNING: power of 2, shift & add |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 561 | mod_imm = -1; |
| 562 | alt_opcode = kThumb2MulRRR; |
| 563 | break; |
| 564 | case kOpCmp: { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 565 | LIR* res; |
| 566 | if (mod_imm >= 0) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 567 | res = NewLIR2(kThumb2CmpRI8M, r_src1.GetReg(), mod_imm); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 568 | } else { |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 569 | mod_imm = ModifiedImmediate(-value); |
| 570 | if (mod_imm >= 0) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 571 | res = NewLIR2(kThumb2CmnRI8M, r_src1.GetReg(), mod_imm); |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 572 | } else { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 573 | RegStorage r_tmp = AllocTemp(); |
Vladimir Marko | 332b7aa | 2013-11-18 12:01:54 +0000 | [diff] [blame] | 574 | res = LoadConstant(r_tmp, value); |
| 575 | OpRegReg(kOpCmp, r_src1, r_tmp); |
| 576 | FreeTemp(r_tmp); |
| 577 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 578 | } |
| 579 | return res; |
| 580 | } |
| 581 | default: |
| 582 | LOG(FATAL) << "Bad opcode: " << op; |
| 583 | } |
| 584 | |
| 585 | if (mod_imm >= 0) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 586 | return NewLIR3(opcode, r_dest.GetReg(), r_src1.GetReg(), mod_imm); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 587 | } else { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 588 | RegStorage r_scratch = AllocTemp(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 589 | LoadConstant(r_scratch, value); |
| 590 | if (EncodingMap[alt_opcode].flags & IS_QUAD_OP) |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 591 | res = NewLIR4(alt_opcode, r_dest.GetReg(), r_src1.GetReg(), r_scratch.GetReg(), 0); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 592 | else |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 593 | res = NewLIR3(alt_opcode, r_dest.GetReg(), r_src1.GetReg(), r_scratch.GetReg()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 594 | FreeTemp(r_scratch); |
| 595 | return res; |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | /* Handle Thumb-only variants here - otherwise punt to OpRegRegImm */ |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 600 | LIR* ArmMir2Lir::OpRegImm(OpKind op, RegStorage r_dest_src1, int value) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 601 | bool neg = (value < 0); |
buzbee | 0d82948 | 2013-10-11 15:24:55 -0700 | [diff] [blame] | 602 | int32_t abs_value = (neg) ? -value : value; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 603 | bool short_form = (((abs_value & 0xff) == abs_value) && r_dest_src1.Low8()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 604 | ArmOpcode opcode = kThumbBkpt; |
| 605 | switch (op) { |
| 606 | case kOpAdd: |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 607 | if (!neg && (r_dest_src1 == rs_r13sp) && (value <= 508)) { /* sp */ |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 608 | DCHECK_EQ((value & 0x3), 0); |
| 609 | return NewLIR1(kThumbAddSpI7, value >> 2); |
| 610 | } else if (short_form) { |
| 611 | opcode = (neg) ? kThumbSubRI8 : kThumbAddRI8; |
| 612 | } |
| 613 | break; |
| 614 | case kOpSub: |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 615 | if (!neg && (r_dest_src1 == rs_r13sp) && (value <= 508)) { /* sp */ |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 616 | DCHECK_EQ((value & 0x3), 0); |
| 617 | return NewLIR1(kThumbSubSpI7, value >> 2); |
| 618 | } else if (short_form) { |
| 619 | opcode = (neg) ? kThumbAddRI8 : kThumbSubRI8; |
| 620 | } |
| 621 | break; |
| 622 | case kOpCmp: |
Vladimir Marko | 2247984 | 2013-11-19 17:04:50 +0000 | [diff] [blame] | 623 | if (!neg && short_form) { |
| 624 | opcode = kThumbCmpRI8; |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 625 | } else { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 626 | short_form = false; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 627 | } |
| 628 | break; |
| 629 | default: |
| 630 | /* Punt to OpRegRegImm - if bad case catch it there */ |
| 631 | short_form = false; |
| 632 | break; |
| 633 | } |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 634 | if (short_form) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 635 | return NewLIR2(opcode, r_dest_src1.GetReg(), abs_value); |
Brian Carlstrom | 9b7085a | 2013-07-18 15:15:21 -0700 | [diff] [blame] | 636 | } else { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 637 | return OpRegRegImm(op, r_dest_src1, r_dest_src1, value); |
| 638 | } |
| 639 | } |
| 640 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 641 | LIR* ArmMir2Lir::LoadConstantWide(RegStorage r_dest, int64_t value) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 642 | LIR* res = NULL; |
| 643 | int32_t val_lo = Low32Bits(value); |
| 644 | int32_t val_hi = High32Bits(value); |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 645 | if (r_dest.IsFloat()) { |
| 646 | DCHECK(!r_dest.IsPair()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 647 | if ((val_lo == 0) && (val_hi == 0)) { |
| 648 | // TODO: we need better info about the target CPU. a vector exclusive or |
| 649 | // would probably be better here if we could rely on its existance. |
| 650 | // Load an immediate +2.0 (which encodes to 0) |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 651 | NewLIR2(kThumb2Vmovd_IMM8, r_dest.GetReg(), 0); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 652 | // +0.0 = +2.0 - +2.0 |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 653 | res = NewLIR3(kThumb2Vsubd, r_dest.GetReg(), r_dest.GetReg(), r_dest.GetReg()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 654 | } else { |
| 655 | int encoded_imm = EncodeImmDouble(value); |
| 656 | if (encoded_imm >= 0) { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 657 | res = NewLIR2(kThumb2Vmovd_IMM8, r_dest.GetReg(), encoded_imm); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 658 | } |
| 659 | } |
| 660 | } else { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 661 | // NOTE: Arm32 assumption here. |
| 662 | DCHECK(r_dest.IsPair()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 663 | if ((InexpensiveConstantInt(val_lo) && (InexpensiveConstantInt(val_hi)))) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 664 | res = LoadConstantNoClobber(r_dest.GetLow(), val_lo); |
| 665 | LoadConstantNoClobber(r_dest.GetHigh(), val_hi); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 666 | } |
| 667 | } |
| 668 | if (res == NULL) { |
| 669 | // No short form - load from the literal pool. |
| 670 | LIR* data_target = ScanLiteralPoolWide(literal_list_, val_lo, val_hi); |
| 671 | if (data_target == NULL) { |
| 672 | data_target = AddWideData(&literal_list_, val_lo, val_hi); |
| 673 | } |
Vladimir Marko | 8dea81c | 2014-06-06 14:50:36 +0100 | [diff] [blame] | 674 | ScopedMemRefType mem_ref_type(this, ResourceMask::kLiteral); |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 675 | if (r_dest.IsFloat()) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 676 | res = RawLIR(current_dalvik_offset_, kThumb2Vldrd, |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 677 | r_dest.GetReg(), rs_r15pc.GetReg(), 0, 0, 0, data_target); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 678 | } else { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 679 | DCHECK(r_dest.IsPair()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 680 | res = RawLIR(current_dalvik_offset_, kThumb2LdrdPcRel8, |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 681 | r_dest.GetLowReg(), r_dest.GetHighReg(), rs_r15pc.GetReg(), 0, 0, data_target); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 682 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 683 | AppendLIR(res); |
| 684 | } |
| 685 | return res; |
| 686 | } |
| 687 | |
| 688 | int ArmMir2Lir::EncodeShift(int code, int amount) { |
| 689 | return ((amount & 0x1f) << 2) | code; |
| 690 | } |
| 691 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 692 | LIR* ArmMir2Lir::LoadBaseIndexed(RegStorage r_base, RegStorage r_index, RegStorage r_dest, |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 693 | int scale, OpSize size) { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 694 | bool all_low_regs = r_base.Low8() && r_index.Low8() && r_dest.Low8(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 695 | LIR* load; |
| 696 | ArmOpcode opcode = kThumbBkpt; |
| 697 | bool thumb_form = (all_low_regs && (scale == 0)); |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 698 | RegStorage reg_ptr; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 699 | |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 700 | if (r_dest.IsFloat()) { |
| 701 | if (r_dest.IsSingle()) { |
buzbee | fd698e6 | 2014-04-27 19:33:22 -0700 | [diff] [blame] | 702 | DCHECK((size == k32) || (size == kSingle) || (size == kReference)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 703 | opcode = kThumb2Vldrs; |
| 704 | size = kSingle; |
| 705 | } else { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 706 | DCHECK(r_dest.IsDouble()); |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 707 | DCHECK((size == k64) || (size == kDouble)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 708 | opcode = kThumb2Vldrd; |
| 709 | size = kDouble; |
| 710 | } |
| 711 | } else { |
| 712 | if (size == kSingle) |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 713 | size = k32; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | switch (size) { |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 717 | case kDouble: // fall-through |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 718 | // Intentional fall-though. |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 719 | case kSingle: |
| 720 | reg_ptr = AllocTemp(); |
| 721 | if (scale) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 722 | NewLIR4(kThumb2AddRRR, reg_ptr.GetReg(), r_base.GetReg(), r_index.GetReg(), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 723 | EncodeShift(kArmLsl, scale)); |
| 724 | } else { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 725 | OpRegRegReg(kOpAdd, reg_ptr, r_base, r_index); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 726 | } |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 727 | load = NewLIR3(opcode, r_dest.GetReg(), reg_ptr.GetReg(), 0); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 728 | FreeTemp(reg_ptr); |
| 729 | return load; |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 730 | case k32: |
| 731 | // Intentional fall-though. |
| 732 | case kReference: |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 733 | opcode = (thumb_form) ? kThumbLdrRRR : kThumb2LdrRRR; |
| 734 | break; |
| 735 | case kUnsignedHalf: |
| 736 | opcode = (thumb_form) ? kThumbLdrhRRR : kThumb2LdrhRRR; |
| 737 | break; |
| 738 | case kSignedHalf: |
| 739 | opcode = (thumb_form) ? kThumbLdrshRRR : kThumb2LdrshRRR; |
| 740 | break; |
| 741 | case kUnsignedByte: |
| 742 | opcode = (thumb_form) ? kThumbLdrbRRR : kThumb2LdrbRRR; |
| 743 | break; |
| 744 | case kSignedByte: |
| 745 | opcode = (thumb_form) ? kThumbLdrsbRRR : kThumb2LdrsbRRR; |
| 746 | break; |
| 747 | default: |
| 748 | LOG(FATAL) << "Bad size: " << size; |
| 749 | } |
| 750 | if (thumb_form) |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 751 | load = NewLIR3(opcode, r_dest.GetReg(), r_base.GetReg(), r_index.GetReg()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 752 | else |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 753 | load = NewLIR4(opcode, r_dest.GetReg(), r_base.GetReg(), r_index.GetReg(), scale); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 754 | |
| 755 | return load; |
| 756 | } |
| 757 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 758 | LIR* ArmMir2Lir::StoreBaseIndexed(RegStorage r_base, RegStorage r_index, RegStorage r_src, |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 759 | int scale, OpSize size) { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 760 | bool all_low_regs = r_base.Low8() && r_index.Low8() && r_src.Low8(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 761 | LIR* store = NULL; |
| 762 | ArmOpcode opcode = kThumbBkpt; |
| 763 | bool thumb_form = (all_low_regs && (scale == 0)); |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 764 | RegStorage reg_ptr; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 765 | |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 766 | if (r_src.IsFloat()) { |
| 767 | if (r_src.IsSingle()) { |
buzbee | fd698e6 | 2014-04-27 19:33:22 -0700 | [diff] [blame] | 768 | DCHECK((size == k32) || (size == kSingle) || (size == kReference)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 769 | opcode = kThumb2Vstrs; |
| 770 | size = kSingle; |
| 771 | } else { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 772 | DCHECK(r_src.IsDouble()); |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 773 | DCHECK((size == k64) || (size == kDouble)); |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 774 | DCHECK_EQ((r_src.GetReg() & 0x1), 0); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 775 | opcode = kThumb2Vstrd; |
| 776 | size = kDouble; |
| 777 | } |
| 778 | } else { |
| 779 | if (size == kSingle) |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 780 | size = k32; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 781 | } |
| 782 | |
| 783 | switch (size) { |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 784 | case kDouble: // fall-through |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 785 | // Intentional fall-though. |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 786 | case kSingle: |
| 787 | reg_ptr = AllocTemp(); |
| 788 | if (scale) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 789 | NewLIR4(kThumb2AddRRR, reg_ptr.GetReg(), r_base.GetReg(), r_index.GetReg(), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 790 | EncodeShift(kArmLsl, scale)); |
| 791 | } else { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 792 | OpRegRegReg(kOpAdd, reg_ptr, r_base, r_index); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 793 | } |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 794 | store = NewLIR3(opcode, r_src.GetReg(), reg_ptr.GetReg(), 0); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 795 | FreeTemp(reg_ptr); |
| 796 | return store; |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 797 | case k32: |
| 798 | // Intentional fall-though. |
| 799 | case kReference: |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 800 | opcode = (thumb_form) ? kThumbStrRRR : kThumb2StrRRR; |
| 801 | break; |
| 802 | case kUnsignedHalf: |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 803 | // Intentional fall-though. |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 804 | case kSignedHalf: |
| 805 | opcode = (thumb_form) ? kThumbStrhRRR : kThumb2StrhRRR; |
| 806 | break; |
| 807 | case kUnsignedByte: |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 808 | // Intentional fall-though. |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 809 | case kSignedByte: |
| 810 | opcode = (thumb_form) ? kThumbStrbRRR : kThumb2StrbRRR; |
| 811 | break; |
| 812 | default: |
| 813 | LOG(FATAL) << "Bad size: " << size; |
| 814 | } |
| 815 | if (thumb_form) |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 816 | store = NewLIR3(opcode, r_src.GetReg(), r_base.GetReg(), r_index.GetReg()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 817 | else |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 818 | store = NewLIR4(opcode, r_src.GetReg(), r_base.GetReg(), r_index.GetReg(), scale); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 819 | |
| 820 | return store; |
| 821 | } |
| 822 | |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 823 | // Helper function for LoadBaseDispBody()/StoreBaseDispBody(). |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 824 | LIR* ArmMir2Lir::LoadStoreUsingInsnWithOffsetImm8Shl2(ArmOpcode opcode, RegStorage r_base, |
| 825 | int displacement, RegStorage r_src_dest, |
| 826 | RegStorage r_work) { |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 827 | DCHECK_EQ(displacement & 3, 0); |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 828 | constexpr int kOffsetMask = 0xff << 2; |
| 829 | int encoded_disp = (displacement & kOffsetMask) >> 2; // Within range of the instruction. |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 830 | RegStorage r_ptr = r_base; |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 831 | if ((displacement & ~kOffsetMask) != 0) { |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 832 | r_ptr = r_work.Valid() ? r_work : AllocTemp(); |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 833 | // Add displacement & ~kOffsetMask to base, it's a single instruction for up to +-256KiB. |
| 834 | OpRegRegImm(kOpAdd, r_ptr, r_base, displacement & ~kOffsetMask); |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 835 | } |
| 836 | LIR* lir = nullptr; |
| 837 | if (!r_src_dest.IsPair()) { |
| 838 | lir = NewLIR3(opcode, r_src_dest.GetReg(), r_ptr.GetReg(), encoded_disp); |
| 839 | } else { |
| 840 | lir = NewLIR4(opcode, r_src_dest.GetLowReg(), r_src_dest.GetHighReg(), r_ptr.GetReg(), |
| 841 | encoded_disp); |
| 842 | } |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 843 | if ((displacement & ~kOffsetMask) != 0 && !r_work.Valid()) { |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 844 | FreeTemp(r_ptr); |
| 845 | } |
| 846 | return lir; |
| 847 | } |
| 848 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 849 | /* |
| 850 | * Load value from base + displacement. Optionally perform null check |
| 851 | * on base (which must have an associated s_reg and MIR). If not |
| 852 | * performing null check, incoming MIR can be null. |
| 853 | */ |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 854 | LIR* ArmMir2Lir::LoadBaseDispBody(RegStorage r_base, int displacement, RegStorage r_dest, |
Vladimir Marko | 3bf7c60 | 2014-05-07 14:55:43 +0100 | [diff] [blame] | 855 | OpSize size) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 856 | LIR* load = NULL; |
| 857 | ArmOpcode opcode = kThumbBkpt; |
| 858 | bool short_form = false; |
| 859 | bool thumb2Form = (displacement < 4092 && displacement >= 0); |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 860 | bool all_low = r_dest.Is32Bit() && r_base.Low8() && r_dest.Low8(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 861 | int encoded_disp = displacement; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 862 | bool already_generated = false; |
| 863 | switch (size) { |
| 864 | case kDouble: |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 865 | // Intentional fall-though. |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 866 | case k64: |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 867 | if (r_dest.IsFloat()) { |
| 868 | DCHECK(!r_dest.IsPair()); |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 869 | load = LoadStoreUsingInsnWithOffsetImm8Shl2(kThumb2Vldrd, r_base, displacement, r_dest); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 870 | } else { |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 871 | DCHECK(r_dest.IsPair()); |
| 872 | // Use the r_dest.GetLow() for the temporary pointer if needed. |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 873 | load = LoadStoreUsingInsnWithOffsetImm8Shl2(kThumb2LdrdI8, r_base, displacement, r_dest, |
| 874 | r_dest.GetLow()); |
Vladimir Marko | 3bf7c60 | 2014-05-07 14:55:43 +0100 | [diff] [blame] | 875 | } |
| 876 | already_generated = true; |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 877 | break; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 878 | case kSingle: |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 879 | // Intentional fall-though. |
| 880 | case k32: |
| 881 | // Intentional fall-though. |
| 882 | case kReference: |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 883 | if (r_dest.IsFloat()) { |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 884 | DCHECK(r_dest.IsSingle()); |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 885 | load = LoadStoreUsingInsnWithOffsetImm8Shl2(kThumb2Vldrs, r_base, displacement, r_dest); |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 886 | already_generated = true; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 887 | break; |
| 888 | } |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 889 | if (r_dest.Low8() && (r_base == rs_rARM_PC) && (displacement <= 1020) && |
| 890 | (displacement >= 0)) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 891 | short_form = true; |
| 892 | encoded_disp >>= 2; |
| 893 | opcode = kThumbLdrPcRel; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 894 | } else if (r_dest.Low8() && (r_base == rs_rARM_SP) && (displacement <= 1020) && |
| 895 | (displacement >= 0)) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 896 | short_form = true; |
| 897 | encoded_disp >>= 2; |
| 898 | opcode = kThumbLdrSpRel; |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 899 | } else if (all_low && displacement < 128 && displacement >= 0) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 900 | DCHECK_EQ((displacement & 0x3), 0); |
| 901 | short_form = true; |
| 902 | encoded_disp >>= 2; |
| 903 | opcode = kThumbLdrRRI5; |
| 904 | } else if (thumb2Form) { |
| 905 | short_form = true; |
| 906 | opcode = kThumb2LdrRRI12; |
| 907 | } |
| 908 | break; |
| 909 | case kUnsignedHalf: |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 910 | if (all_low && displacement < 64 && displacement >= 0) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 911 | DCHECK_EQ((displacement & 0x1), 0); |
| 912 | short_form = true; |
| 913 | encoded_disp >>= 1; |
| 914 | opcode = kThumbLdrhRRI5; |
| 915 | } else if (displacement < 4092 && displacement >= 0) { |
| 916 | short_form = true; |
| 917 | opcode = kThumb2LdrhRRI12; |
| 918 | } |
| 919 | break; |
| 920 | case kSignedHalf: |
| 921 | if (thumb2Form) { |
| 922 | short_form = true; |
| 923 | opcode = kThumb2LdrshRRI12; |
| 924 | } |
| 925 | break; |
| 926 | case kUnsignedByte: |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 927 | if (all_low && displacement < 32 && displacement >= 0) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 928 | short_form = true; |
| 929 | opcode = kThumbLdrbRRI5; |
| 930 | } else if (thumb2Form) { |
| 931 | short_form = true; |
| 932 | opcode = kThumb2LdrbRRI12; |
| 933 | } |
| 934 | break; |
| 935 | case kSignedByte: |
| 936 | if (thumb2Form) { |
| 937 | short_form = true; |
| 938 | opcode = kThumb2LdrsbRRI12; |
| 939 | } |
| 940 | break; |
| 941 | default: |
| 942 | LOG(FATAL) << "Bad size: " << size; |
| 943 | } |
| 944 | |
| 945 | if (!already_generated) { |
| 946 | if (short_form) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 947 | load = NewLIR3(opcode, r_dest.GetReg(), r_base.GetReg(), encoded_disp); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 948 | } else { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 949 | RegStorage reg_offset = AllocTemp(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 950 | LoadConstant(reg_offset, encoded_disp); |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 951 | DCHECK(!r_dest.IsFloat()); |
| 952 | load = LoadBaseIndexed(r_base, reg_offset, r_dest, 0, size); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 953 | FreeTemp(reg_offset); |
| 954 | } |
| 955 | } |
| 956 | |
| 957 | // TODO: in future may need to differentiate Dalvik accesses w/ spills |
Vladimir Marko | 8dea81c | 2014-06-06 14:50:36 +0100 | [diff] [blame] | 958 | if (mem_ref_type_ == ResourceMask::kDalvikReg) { |
| 959 | DCHECK(r_base == rs_rARM_SP); |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 960 | AnnotateDalvikRegAccess(load, displacement >> 2, true /* is_load */, r_dest.Is64Bit()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 961 | } |
| 962 | return load; |
| 963 | } |
| 964 | |
Vladimir Marko | 674744e | 2014-04-24 15:18:26 +0100 | [diff] [blame] | 965 | LIR* ArmMir2Lir::LoadBaseDisp(RegStorage r_base, int displacement, RegStorage r_dest, |
Andreas Gampe | 3c12c51 | 2014-06-24 18:46:29 +0000 | [diff] [blame] | 966 | OpSize size, VolatileKind is_volatile) { |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 967 | // TODO: base this on target. |
| 968 | if (size == kWord) { |
| 969 | size = k32; |
| 970 | } |
Andreas Gampe | 3c12c51 | 2014-06-24 18:46:29 +0000 | [diff] [blame] | 971 | LIR* load; |
| 972 | if (UNLIKELY(is_volatile == kVolatile && |
| 973 | (size == k64 || size == kDouble) && |
| 974 | !cu_->compiler_driver->GetInstructionSetFeatures().HasLpae())) { |
| 975 | // Only 64-bit load needs special handling. |
| 976 | // If the cpu supports LPAE, aligned LDRD is atomic - fall through to LoadBaseDisp(). |
| 977 | DCHECK(!r_dest.IsFloat()); // See RegClassForFieldLoadSave(). |
| 978 | // Use LDREXD for the atomic load. (Expect displacement > 0, don't optimize for == 0.) |
| 979 | RegStorage r_ptr = AllocTemp(); |
| 980 | OpRegRegImm(kOpAdd, r_ptr, r_base, displacement); |
| 981 | LIR* lir = NewLIR3(kThumb2Ldrexd, r_dest.GetLowReg(), r_dest.GetHighReg(), r_ptr.GetReg()); |
| 982 | FreeTemp(r_ptr); |
| 983 | return lir; |
| 984 | } else { |
| 985 | load = LoadBaseDispBody(r_base, displacement, r_dest, size); |
| 986 | } |
| 987 | |
| 988 | if (UNLIKELY(is_volatile == kVolatile)) { |
| 989 | // Without context sensitive analysis, we must issue the most conservative barriers. |
| 990 | // In this case, either a load or store may follow so we issue both barriers. |
| 991 | GenMemBarrier(kLoadLoad); |
| 992 | GenMemBarrier(kLoadStore); |
| 993 | } |
| 994 | |
| 995 | return load; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 996 | } |
| 997 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 998 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 999 | LIR* ArmMir2Lir::StoreBaseDispBody(RegStorage r_base, int displacement, RegStorage r_src, |
| 1000 | OpSize size) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1001 | LIR* store = NULL; |
| 1002 | ArmOpcode opcode = kThumbBkpt; |
| 1003 | bool short_form = false; |
| 1004 | bool thumb2Form = (displacement < 4092 && displacement >= 0); |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 1005 | bool all_low = r_src.Is32Bit() && r_base.Low8() && r_src.Low8(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1006 | int encoded_disp = displacement; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1007 | bool already_generated = false; |
| 1008 | switch (size) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1009 | case kDouble: |
Vladimir Marko | 3bf7c60 | 2014-05-07 14:55:43 +0100 | [diff] [blame] | 1010 | // Intentional fall-though. |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 1011 | case k64: |
Vladimir Marko | 3bf7c60 | 2014-05-07 14:55:43 +0100 | [diff] [blame] | 1012 | if (r_src.IsFloat()) { |
| 1013 | DCHECK(!r_src.IsPair()); |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 1014 | store = LoadStoreUsingInsnWithOffsetImm8Shl2(kThumb2Vstrd, r_base, displacement, r_src); |
Vladimir Marko | 3bf7c60 | 2014-05-07 14:55:43 +0100 | [diff] [blame] | 1015 | } else { |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 1016 | DCHECK(r_src.IsPair()); |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 1017 | store = LoadStoreUsingInsnWithOffsetImm8Shl2(kThumb2StrdI8, r_base, displacement, r_src); |
Vladimir Marko | 3bf7c60 | 2014-05-07 14:55:43 +0100 | [diff] [blame] | 1018 | } |
| 1019 | already_generated = true; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1020 | break; |
| 1021 | case kSingle: |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 1022 | // Intentional fall-through. |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 1023 | case k32: |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 1024 | // Intentional fall-through. |
buzbee | 695d13a | 2014-04-19 13:32:20 -0700 | [diff] [blame] | 1025 | case kReference: |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 1026 | if (r_src.IsFloat()) { |
| 1027 | DCHECK(r_src.IsSingle()); |
Vladimir Marko | 3757397 | 2014-06-16 10:32:25 +0100 | [diff] [blame] | 1028 | store = LoadStoreUsingInsnWithOffsetImm8Shl2(kThumb2Vstrs, r_base, displacement, r_src); |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 1029 | already_generated = true; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1030 | break; |
| 1031 | } |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 1032 | if (r_src.Low8() && (r_base == rs_r13sp) && (displacement <= 1020) && (displacement >= 0)) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1033 | short_form = true; |
| 1034 | encoded_disp >>= 2; |
| 1035 | opcode = kThumbStrSpRel; |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1036 | } else if (all_low && displacement < 128 && displacement >= 0) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1037 | DCHECK_EQ((displacement & 0x3), 0); |
| 1038 | short_form = true; |
| 1039 | encoded_disp >>= 2; |
| 1040 | opcode = kThumbStrRRI5; |
| 1041 | } else if (thumb2Form) { |
| 1042 | short_form = true; |
| 1043 | opcode = kThumb2StrRRI12; |
| 1044 | } |
| 1045 | break; |
| 1046 | case kUnsignedHalf: |
| 1047 | case kSignedHalf: |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1048 | if (all_low && displacement < 64 && displacement >= 0) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1049 | DCHECK_EQ((displacement & 0x1), 0); |
| 1050 | short_form = true; |
| 1051 | encoded_disp >>= 1; |
| 1052 | opcode = kThumbStrhRRI5; |
| 1053 | } else if (thumb2Form) { |
| 1054 | short_form = true; |
| 1055 | opcode = kThumb2StrhRRI12; |
| 1056 | } |
| 1057 | break; |
| 1058 | case kUnsignedByte: |
| 1059 | case kSignedByte: |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1060 | if (all_low && displacement < 32 && displacement >= 0) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1061 | short_form = true; |
| 1062 | opcode = kThumbStrbRRI5; |
| 1063 | } else if (thumb2Form) { |
| 1064 | short_form = true; |
| 1065 | opcode = kThumb2StrbRRI12; |
| 1066 | } |
| 1067 | break; |
| 1068 | default: |
| 1069 | LOG(FATAL) << "Bad size: " << size; |
| 1070 | } |
| 1071 | if (!already_generated) { |
| 1072 | if (short_form) { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1073 | store = NewLIR3(opcode, r_src.GetReg(), r_base.GetReg(), encoded_disp); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1074 | } else { |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1075 | RegStorage r_scratch = AllocTemp(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1076 | LoadConstant(r_scratch, encoded_disp); |
Vladimir Marko | db9d523 | 2014-06-10 18:15:57 +0100 | [diff] [blame] | 1077 | DCHECK(!r_src.IsFloat()); |
| 1078 | store = StoreBaseIndexed(r_base, r_scratch, r_src, 0, size); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1079 | FreeTemp(r_scratch); |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | // TODO: In future, may need to differentiate Dalvik & spill accesses |
Vladimir Marko | 8dea81c | 2014-06-06 14:50:36 +0100 | [diff] [blame] | 1084 | if (mem_ref_type_ == ResourceMask::kDalvikReg) { |
| 1085 | DCHECK(r_base == rs_rARM_SP); |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1086 | AnnotateDalvikRegAccess(store, displacement >> 2, false /* is_load */, r_src.Is64Bit()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1087 | } |
| 1088 | return store; |
| 1089 | } |
| 1090 | |
Andreas Gampe | de68676 | 2014-06-24 18:42:06 +0000 | [diff] [blame] | 1091 | LIR* ArmMir2Lir::StoreBaseDisp(RegStorage r_base, int displacement, RegStorage r_src, |
Andreas Gampe | 3c12c51 | 2014-06-24 18:46:29 +0000 | [diff] [blame] | 1092 | OpSize size, VolatileKind is_volatile) { |
| 1093 | if (UNLIKELY(is_volatile == kVolatile)) { |
| 1094 | // There might have been a store before this volatile one so insert StoreStore barrier. |
| 1095 | GenMemBarrier(kStoreStore); |
Andreas Gampe | 2689fba | 2014-06-23 13:23:04 -0700 | [diff] [blame] | 1096 | } |
Andreas Gampe | 3c12c51 | 2014-06-24 18:46:29 +0000 | [diff] [blame] | 1097 | |
| 1098 | LIR* store; |
| 1099 | if (UNLIKELY(is_volatile == kVolatile && |
| 1100 | (size == k64 || size == kDouble) && |
| 1101 | !cu_->compiler_driver->GetInstructionSetFeatures().HasLpae())) { |
| 1102 | // Only 64-bit store needs special handling. |
| 1103 | // If the cpu supports LPAE, aligned STRD is atomic - fall through to StoreBaseDisp(). |
| 1104 | // Use STREXD for the atomic store. (Expect displacement > 0, don't optimize for == 0.) |
| 1105 | DCHECK(!r_src.IsFloat()); // See RegClassForFieldLoadSave(). |
| 1106 | RegStorage r_ptr = AllocTemp(); |
| 1107 | OpRegRegImm(kOpAdd, r_ptr, r_base, displacement); |
| 1108 | LIR* fail_target = NewLIR0(kPseudoTargetLabel); |
| 1109 | // We have only 5 temporary registers available and if r_base, r_src and r_ptr already |
| 1110 | // take 4, we can't directly allocate 2 more for LDREXD temps. In that case clobber r_ptr |
| 1111 | // in LDREXD and recalculate it from r_base. |
| 1112 | RegStorage r_temp = AllocTemp(); |
| 1113 | RegStorage r_temp_high = AllocFreeTemp(); // We may not have another temp. |
| 1114 | if (r_temp_high.Valid()) { |
| 1115 | NewLIR3(kThumb2Ldrexd, r_temp.GetReg(), r_temp_high.GetReg(), r_ptr.GetReg()); |
| 1116 | FreeTemp(r_temp_high); |
| 1117 | FreeTemp(r_temp); |
| 1118 | } else { |
| 1119 | // If we don't have another temp, clobber r_ptr in LDREXD and reload it. |
| 1120 | NewLIR3(kThumb2Ldrexd, r_temp.GetReg(), r_ptr.GetReg(), r_ptr.GetReg()); |
| 1121 | FreeTemp(r_temp); // May need the temp for kOpAdd. |
| 1122 | OpRegRegImm(kOpAdd, r_ptr, r_base, displacement); |
| 1123 | } |
| 1124 | store = NewLIR4(kThumb2Strexd, r_temp.GetReg(), r_src.GetLowReg(), r_src.GetHighReg(), |
| 1125 | r_ptr.GetReg()); |
| 1126 | OpCmpImmBranch(kCondNe, r_temp, 0, fail_target); |
| 1127 | FreeTemp(r_ptr); |
| 1128 | } else { |
| 1129 | // TODO: base this on target. |
| 1130 | if (size == kWord) { |
| 1131 | size = k32; |
| 1132 | } |
| 1133 | |
| 1134 | store = StoreBaseDispBody(r_base, displacement, r_src, size); |
| 1135 | } |
| 1136 | |
| 1137 | if (UNLIKELY(is_volatile == kVolatile)) { |
| 1138 | // A load might follow the volatile store so insert a StoreLoad barrier. |
| 1139 | GenMemBarrier(kStoreLoad); |
| 1140 | } |
| 1141 | |
| 1142 | return store; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1143 | } |
| 1144 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1145 | LIR* ArmMir2Lir::OpFpRegCopy(RegStorage r_dest, RegStorage r_src) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1146 | int opcode; |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 1147 | DCHECK_EQ(r_dest.IsDouble(), r_src.IsDouble()); |
| 1148 | if (r_dest.IsDouble()) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1149 | opcode = kThumb2Vmovd; |
| 1150 | } else { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 1151 | if (r_dest.IsSingle()) { |
| 1152 | opcode = r_src.IsSingle() ? kThumb2Vmovs : kThumb2Fmsr; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1153 | } else { |
buzbee | 091cc40 | 2014-03-31 10:14:40 -0700 | [diff] [blame] | 1154 | DCHECK(r_src.IsSingle()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1155 | opcode = kThumb2Fmrs; |
| 1156 | } |
| 1157 | } |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1158 | LIR* res = RawLIR(current_dalvik_offset_, opcode, r_dest.GetReg(), r_src.GetReg()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1159 | if (!(cu_->disable_opt & (1 << kSafeOptimizations)) && r_dest == r_src) { |
| 1160 | res->flags.is_nop = true; |
| 1161 | } |
| 1162 | return res; |
| 1163 | } |
| 1164 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1165 | LIR* ArmMir2Lir::OpThreadMem(OpKind op, ThreadOffset<4> thread_offset) { |
Dave Allison | d6ed642 | 2014-04-09 23:36:15 +0000 | [diff] [blame] | 1166 | LOG(FATAL) << "Unexpected use of OpThreadMem for Arm"; |
| 1167 | return NULL; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1168 | } |
| 1169 | |
Andreas Gampe | 2f244e9 | 2014-05-08 03:35:25 -0700 | [diff] [blame] | 1170 | LIR* ArmMir2Lir::OpThreadMem(OpKind op, ThreadOffset<8> thread_offset) { |
| 1171 | UNIMPLEMENTED(FATAL) << "Should not be called."; |
| 1172 | return nullptr; |
| 1173 | } |
| 1174 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1175 | LIR* ArmMir2Lir::OpMem(OpKind op, RegStorage r_base, int disp) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1176 | LOG(FATAL) << "Unexpected use of OpMem for Arm"; |
| 1177 | return NULL; |
| 1178 | } |
| 1179 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1180 | LIR* ArmMir2Lir::StoreBaseIndexedDisp(RegStorage r_base, RegStorage r_index, int scale, |
Vladimir Marko | 3bf7c60 | 2014-05-07 14:55:43 +0100 | [diff] [blame] | 1181 | int displacement, RegStorage r_src, OpSize size) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1182 | LOG(FATAL) << "Unexpected use of StoreBaseIndexedDisp for Arm"; |
| 1183 | return NULL; |
| 1184 | } |
| 1185 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1186 | LIR* ArmMir2Lir::OpRegMem(OpKind op, RegStorage r_dest, RegStorage r_base, int offset) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1187 | LOG(FATAL) << "Unexpected use of OpRegMem for Arm"; |
| 1188 | return NULL; |
| 1189 | } |
| 1190 | |
buzbee | 2700f7e | 2014-03-07 09:46:20 -0800 | [diff] [blame] | 1191 | LIR* ArmMir2Lir::LoadBaseIndexedDisp(RegStorage r_base, RegStorage r_index, int scale, |
Vladimir Marko | 3bf7c60 | 2014-05-07 14:55:43 +0100 | [diff] [blame] | 1192 | int displacement, RegStorage r_dest, OpSize size) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1193 | LOG(FATAL) << "Unexpected use of LoadBaseIndexedDisp for Arm"; |
| 1194 | return NULL; |
| 1195 | } |
| 1196 | |
| 1197 | } // namespace art |