buzbee | 67bf885 | 2011-08-17 17:51:35 -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 | |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 17 | namespace art { |
| 18 | |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 19 | /* |
| 20 | * This file contains codegen for the Thumb ISA and is intended to be |
| 21 | * includes by: |
| 22 | * |
| 23 | * Codegen-$(TARGET_ARCH_VARIANT).c |
| 24 | * |
| 25 | */ |
| 26 | |
buzbee | 6825326 | 2011-10-07 14:02:25 -0700 | [diff] [blame] | 27 | static int coreRegs[] = {r0, r1, r2, r3, rSUSPEND, r5, r6, r7, r8, rSELF, r10, |
buzbee | c1f4504 | 2011-09-21 16:03:19 -0700 | [diff] [blame] | 28 | r11, r12, rSP, rLR, rPC}; |
| 29 | static int reservedRegs[] = {rSUSPEND, rSELF, rSP, rLR, rPC}; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 30 | static int fpRegs[] = {fr0, fr1, fr2, fr3, fr4, fr5, fr6, fr7, |
| 31 | fr8, fr9, fr10, fr11, fr12, fr13, fr14, fr15, |
| 32 | fr16, fr17, fr18, fr19, fr20, fr21, fr22, fr23, |
| 33 | fr24, fr25, fr26, fr27, fr28, fr29, fr30, fr31}; |
| 34 | static int coreTemps[] = {r0, r1, r2, r3, r12}; |
| 35 | static int fpTemps[] = {fr0, fr1, fr2, fr3, fr4, fr5, fr6, fr7, |
| 36 | fr8, fr9, fr10, fr11, fr12, fr13, fr14, fr15}; |
| 37 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 38 | STATIC int encodeImmSingle(int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 39 | { |
| 40 | int res; |
| 41 | int bitA = (value & 0x80000000) >> 31; |
| 42 | int notBitB = (value & 0x40000000) >> 30; |
| 43 | int bitB = (value & 0x20000000) >> 29; |
| 44 | int bSmear = (value & 0x3e000000) >> 25; |
| 45 | int slice = (value & 0x01f80000) >> 19; |
| 46 | int zeroes = (value & 0x0007ffff); |
| 47 | if (zeroes != 0) |
| 48 | return -1; |
| 49 | if (bitB) { |
| 50 | if ((notBitB != 0) || (bSmear != 0x1f)) |
| 51 | return -1; |
| 52 | } else { |
| 53 | if ((notBitB != 1) || (bSmear != 0x0)) |
| 54 | return -1; |
| 55 | } |
| 56 | res = (bitA << 7) | (bitB << 6) | slice; |
| 57 | return res; |
| 58 | } |
| 59 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 60 | STATIC ArmLIR* loadFPConstantValue(CompilationUnit* cUnit, int rDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 61 | int value) |
| 62 | { |
| 63 | int encodedImm = encodeImmSingle(value); |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 64 | DCHECK(SINGLEREG(rDest)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 65 | if (encodedImm >= 0) { |
| 66 | return newLIR2(cUnit, kThumb2Vmovs_IMM8, rDest, encodedImm); |
| 67 | } |
| 68 | ArmLIR* dataTarget = scanLiteralPool(cUnit->literalList, value, 0); |
| 69 | if (dataTarget == NULL) { |
| 70 | dataTarget = addWordData(cUnit, &cUnit->literalList, value); |
| 71 | } |
| 72 | ArmLIR* loadPcRel = (ArmLIR* ) oatNew(sizeof(ArmLIR), true); |
| 73 | loadPcRel->generic.dalvikOffset = cUnit->currentDalvikOffset; |
| 74 | loadPcRel->opcode = kThumb2Vldrs; |
| 75 | loadPcRel->generic.target = (LIR* ) dataTarget; |
| 76 | loadPcRel->operands[0] = rDest; |
| 77 | loadPcRel->operands[1] = r15pc; |
| 78 | setupResourceMasks(loadPcRel); |
| 79 | setMemRefType(loadPcRel, true, kLiteral); |
buzbee | bbaf894 | 2011-10-02 13:08:29 -0700 | [diff] [blame] | 80 | loadPcRel->aliasInfo = (intptr_t)dataTarget; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 81 | oatAppendLIR(cUnit, (LIR* ) loadPcRel); |
| 82 | return loadPcRel; |
| 83 | } |
| 84 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 85 | STATIC int leadingZeros(u4 val) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 86 | { |
| 87 | u4 alt; |
| 88 | int n; |
| 89 | int count; |
| 90 | |
| 91 | count = 16; |
| 92 | n = 32; |
| 93 | do { |
| 94 | alt = val >> count; |
| 95 | if (alt != 0) { |
| 96 | n = n - count; |
| 97 | val = alt; |
| 98 | } |
| 99 | count >>= 1; |
| 100 | } while (count); |
| 101 | return n - val; |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * Determine whether value can be encoded as a Thumb2 modified |
| 106 | * immediate. If not, return -1. If so, return i:imm3:a:bcdefgh form. |
| 107 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 108 | STATIC int modifiedImmediate(u4 value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 109 | { |
| 110 | int zLeading; |
| 111 | int zTrailing; |
| 112 | u4 b0 = value & 0xff; |
| 113 | |
| 114 | /* Note: case of value==0 must use 0:000:0:0000000 encoding */ |
| 115 | if (value <= 0xFF) |
| 116 | return b0; // 0:000:a:bcdefgh |
| 117 | if (value == ((b0 << 16) | b0)) |
| 118 | return (0x1 << 8) | b0; /* 0:001:a:bcdefgh */ |
| 119 | if (value == ((b0 << 24) | (b0 << 16) | (b0 << 8) | b0)) |
| 120 | return (0x3 << 8) | b0; /* 0:011:a:bcdefgh */ |
| 121 | b0 = (value >> 8) & 0xff; |
| 122 | if (value == ((b0 << 24) | (b0 << 8))) |
| 123 | return (0x2 << 8) | b0; /* 0:010:a:bcdefgh */ |
| 124 | /* Can we do it with rotation? */ |
| 125 | zLeading = leadingZeros(value); |
| 126 | zTrailing = 32 - leadingZeros(~value & (value - 1)); |
| 127 | /* A run of eight or fewer active bits? */ |
| 128 | if ((zLeading + zTrailing) < 24) |
| 129 | return -1; /* No - bail */ |
| 130 | /* left-justify the constant, discarding msb (known to be 1) */ |
| 131 | value <<= zLeading + 1; |
| 132 | /* Create bcdefgh */ |
| 133 | value >>= 25; |
| 134 | /* Put it all together */ |
| 135 | return value | ((0x8 + zLeading) << 7); /* [01000..11111]:bcdefgh */ |
| 136 | } |
| 137 | |
| 138 | /* |
| 139 | * Load a immediate using a shortcut if possible; otherwise |
| 140 | * grab from the per-translation literal pool. |
| 141 | * |
| 142 | * No additional register clobbering operation performed. Use this version when |
| 143 | * 1) rDest is freshly returned from oatAllocTemp or |
| 144 | * 2) The codegen is under fixed register usage |
| 145 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 146 | STATIC ArmLIR* loadConstantNoClobber(CompilationUnit* cUnit, int rDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 147 | int value) |
| 148 | { |
| 149 | ArmLIR* res; |
| 150 | int modImm; |
| 151 | |
| 152 | if (FPREG(rDest)) { |
| 153 | return loadFPConstantValue(cUnit, rDest, value); |
| 154 | } |
| 155 | |
| 156 | /* See if the value can be constructed cheaply */ |
| 157 | if (LOWREG(rDest) && (value >= 0) && (value <= 255)) { |
| 158 | return newLIR2(cUnit, kThumbMovImm, rDest, value); |
| 159 | } |
| 160 | /* Check Modified immediate special cases */ |
| 161 | modImm = modifiedImmediate(value); |
| 162 | if (modImm >= 0) { |
| 163 | res = newLIR2(cUnit, kThumb2MovImmShift, rDest, modImm); |
| 164 | return res; |
| 165 | } |
| 166 | modImm = modifiedImmediate(~value); |
| 167 | if (modImm >= 0) { |
buzbee | 58f9274 | 2011-10-01 11:22:17 -0700 | [diff] [blame] | 168 | res = newLIR2(cUnit, kThumb2MvnImm12, rDest, modImm); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 169 | return res; |
| 170 | } |
| 171 | /* 16-bit immediate? */ |
| 172 | if ((value & 0xffff) == value) { |
| 173 | res = newLIR2(cUnit, kThumb2MovImm16, rDest, value); |
| 174 | return res; |
| 175 | } |
| 176 | /* No shortcut - go ahead and use literal pool */ |
| 177 | ArmLIR* dataTarget = scanLiteralPool(cUnit->literalList, value, 0); |
| 178 | if (dataTarget == NULL) { |
| 179 | dataTarget = addWordData(cUnit, &cUnit->literalList, value); |
| 180 | } |
| 181 | ArmLIR* loadPcRel = (ArmLIR* ) oatNew(sizeof(ArmLIR), true); |
| 182 | loadPcRel->opcode = kThumb2LdrPcRel12; |
| 183 | loadPcRel->generic.target = (LIR* ) dataTarget; |
| 184 | loadPcRel->generic.dalvikOffset = cUnit->currentDalvikOffset; |
| 185 | loadPcRel->operands[0] = rDest; |
| 186 | setupResourceMasks(loadPcRel); |
| 187 | setMemRefType(loadPcRel, true, kLiteral); |
buzbee | bbaf894 | 2011-10-02 13:08:29 -0700 | [diff] [blame] | 188 | loadPcRel->aliasInfo = (intptr_t)dataTarget; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 189 | res = loadPcRel; |
| 190 | oatAppendLIR(cUnit, (LIR* ) loadPcRel); |
| 191 | |
| 192 | /* |
| 193 | * To save space in the constant pool, we use the ADD_RRI8 instruction to |
| 194 | * add up to 255 to an existing constant value. |
| 195 | */ |
| 196 | if (dataTarget->operands[0] != value) { |
| 197 | opRegImm(cUnit, kOpAdd, rDest, value - dataTarget->operands[0]); |
| 198 | } |
| 199 | return res; |
| 200 | } |
| 201 | |
| 202 | /* |
| 203 | * Load an immediate value into a fixed or temp register. Target |
| 204 | * register is clobbered, and marked inUse. |
| 205 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 206 | STATIC ArmLIR* loadConstant(CompilationUnit* cUnit, int rDest, int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 207 | { |
| 208 | if (oatIsTemp(cUnit, rDest)) { |
| 209 | oatClobber(cUnit, rDest); |
| 210 | oatMarkInUse(cUnit, rDest); |
| 211 | } |
| 212 | return loadConstantNoClobber(cUnit, rDest, value); |
| 213 | } |
| 214 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 215 | STATIC ArmLIR* opNone(CompilationUnit* cUnit, OpKind op) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 216 | { |
| 217 | ArmOpcode opcode = kThumbBkpt; |
| 218 | switch (op) { |
| 219 | case kOpUncondBr: |
| 220 | opcode = kThumbBUncond; |
| 221 | break; |
| 222 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 223 | LOG(FATAL) << "Bad opcode " << (int)op; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 224 | } |
| 225 | return newLIR0(cUnit, opcode); |
| 226 | } |
| 227 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 228 | STATIC ArmLIR* opCondBranch(CompilationUnit* cUnit, ArmConditionCode cc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 229 | { |
| 230 | return newLIR2(cUnit, kThumb2BCond, 0 /* offset to be patched */, cc); |
| 231 | } |
| 232 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 233 | STATIC ArmLIR* opReg(CompilationUnit* cUnit, OpKind op, int rDestSrc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 234 | { |
| 235 | ArmOpcode opcode = kThumbBkpt; |
| 236 | switch (op) { |
| 237 | case kOpBlx: |
| 238 | opcode = kThumbBlxR; |
| 239 | break; |
| 240 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 241 | LOG(FATAL) << "Bad opcode " << (int)op; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 242 | } |
| 243 | return newLIR1(cUnit, opcode, rDestSrc); |
| 244 | } |
| 245 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 246 | STATIC ArmLIR* opRegRegShift(CompilationUnit* cUnit, OpKind op, int rDestSrc1, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 247 | int rSrc2, int shift) |
| 248 | { |
| 249 | bool thumbForm = ((shift == 0) && LOWREG(rDestSrc1) && LOWREG(rSrc2)); |
| 250 | ArmOpcode opcode = kThumbBkpt; |
| 251 | switch (op) { |
| 252 | case kOpAdc: |
| 253 | opcode = (thumbForm) ? kThumbAdcRR : kThumb2AdcRRR; |
| 254 | break; |
| 255 | case kOpAnd: |
| 256 | opcode = (thumbForm) ? kThumbAndRR : kThumb2AndRRR; |
| 257 | break; |
| 258 | case kOpBic: |
| 259 | opcode = (thumbForm) ? kThumbBicRR : kThumb2BicRRR; |
| 260 | break; |
| 261 | case kOpCmn: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 262 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 263 | opcode = (thumbForm) ? kThumbCmnRR : kThumb2CmnRR; |
| 264 | break; |
| 265 | case kOpCmp: |
| 266 | if (thumbForm) |
| 267 | opcode = kThumbCmpRR; |
| 268 | else if ((shift == 0) && !LOWREG(rDestSrc1) && !LOWREG(rSrc2)) |
| 269 | opcode = kThumbCmpHH; |
| 270 | else if ((shift == 0) && LOWREG(rDestSrc1)) |
| 271 | opcode = kThumbCmpLH; |
| 272 | else if (shift == 0) |
| 273 | opcode = kThumbCmpHL; |
| 274 | else |
| 275 | opcode = kThumb2CmpRR; |
| 276 | break; |
| 277 | case kOpXor: |
| 278 | opcode = (thumbForm) ? kThumbEorRR : kThumb2EorRRR; |
| 279 | break; |
| 280 | case kOpMov: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 281 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 282 | if (LOWREG(rDestSrc1) && LOWREG(rSrc2)) |
| 283 | opcode = kThumbMovRR; |
| 284 | else if (!LOWREG(rDestSrc1) && !LOWREG(rSrc2)) |
| 285 | opcode = kThumbMovRR_H2H; |
| 286 | else if (LOWREG(rDestSrc1)) |
| 287 | opcode = kThumbMovRR_H2L; |
| 288 | else |
| 289 | opcode = kThumbMovRR_L2H; |
| 290 | break; |
| 291 | case kOpMul: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 292 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 293 | opcode = (thumbForm) ? kThumbMul : kThumb2MulRRR; |
| 294 | break; |
| 295 | case kOpMvn: |
| 296 | opcode = (thumbForm) ? kThumbMvn : kThumb2MnvRR; |
| 297 | break; |
| 298 | case kOpNeg: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 299 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 300 | opcode = (thumbForm) ? kThumbNeg : kThumb2NegRR; |
| 301 | break; |
| 302 | case kOpOr: |
| 303 | opcode = (thumbForm) ? kThumbOrr : kThumb2OrrRRR; |
| 304 | break; |
| 305 | case kOpSbc: |
| 306 | opcode = (thumbForm) ? kThumbSbc : kThumb2SbcRRR; |
| 307 | break; |
| 308 | case kOpTst: |
| 309 | opcode = (thumbForm) ? kThumbTst : kThumb2TstRR; |
| 310 | break; |
| 311 | case kOpLsl: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 312 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 313 | opcode = (thumbForm) ? kThumbLslRR : kThumb2LslRRR; |
| 314 | break; |
| 315 | case kOpLsr: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 316 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 317 | opcode = (thumbForm) ? kThumbLsrRR : kThumb2LsrRRR; |
| 318 | break; |
| 319 | case kOpAsr: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 320 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 321 | opcode = (thumbForm) ? kThumbAsrRR : kThumb2AsrRRR; |
| 322 | break; |
| 323 | case kOpRor: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 324 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 325 | opcode = (thumbForm) ? kThumbRorRR : kThumb2RorRRR; |
| 326 | break; |
| 327 | case kOpAdd: |
| 328 | opcode = (thumbForm) ? kThumbAddRRR : kThumb2AddRRR; |
| 329 | break; |
| 330 | case kOpSub: |
| 331 | opcode = (thumbForm) ? kThumbSubRRR : kThumb2SubRRR; |
| 332 | break; |
| 333 | case kOp2Byte: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 334 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 335 | return newLIR4(cUnit, kThumb2Sbfx, rDestSrc1, rSrc2, 0, 8); |
| 336 | case kOp2Short: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 337 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 338 | return newLIR4(cUnit, kThumb2Sbfx, rDestSrc1, rSrc2, 0, 16); |
| 339 | case kOp2Char: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 340 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 341 | return newLIR4(cUnit, kThumb2Ubfx, rDestSrc1, rSrc2, 0, 16); |
| 342 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 343 | LOG(FATAL) << "Bad opcode: " << (int)op; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 344 | break; |
| 345 | } |
Elliott Hughes | f5a7a47 | 2011-10-07 14:31:02 -0700 | [diff] [blame] | 346 | DCHECK_GE(static_cast<int>(opcode), 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 347 | if (EncodingMap[opcode].flags & IS_BINARY_OP) |
| 348 | return newLIR2(cUnit, opcode, rDestSrc1, rSrc2); |
| 349 | else if (EncodingMap[opcode].flags & IS_TERTIARY_OP) { |
| 350 | if (EncodingMap[opcode].fieldLoc[2].kind == kFmtShift) |
| 351 | return newLIR3(cUnit, opcode, rDestSrc1, rSrc2, shift); |
| 352 | else |
| 353 | return newLIR3(cUnit, opcode, rDestSrc1, rDestSrc1, rSrc2); |
| 354 | } else if (EncodingMap[opcode].flags & IS_QUAD_OP) |
| 355 | return newLIR4(cUnit, opcode, rDestSrc1, rDestSrc1, rSrc2, shift); |
| 356 | else { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 357 | LOG(FATAL) << "Unexpected encoding operand count"; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 358 | return NULL; |
| 359 | } |
| 360 | } |
| 361 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 362 | STATIC ArmLIR* opRegReg(CompilationUnit* cUnit, OpKind op, int rDestSrc1, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 363 | int rSrc2) |
| 364 | { |
| 365 | return opRegRegShift(cUnit, op, rDestSrc1, rSrc2, 0); |
| 366 | } |
| 367 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 368 | STATIC ArmLIR* opRegRegRegShift(CompilationUnit* cUnit, OpKind op, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 369 | int rDest, int rSrc1, int rSrc2, int shift) |
| 370 | { |
| 371 | ArmOpcode opcode = kThumbBkpt; |
| 372 | bool thumbForm = (shift == 0) && LOWREG(rDest) && LOWREG(rSrc1) && |
| 373 | LOWREG(rSrc2); |
| 374 | switch (op) { |
| 375 | case kOpAdd: |
| 376 | opcode = (thumbForm) ? kThumbAddRRR : kThumb2AddRRR; |
| 377 | break; |
| 378 | case kOpSub: |
| 379 | opcode = (thumbForm) ? kThumbSubRRR : kThumb2SubRRR; |
| 380 | break; |
| 381 | case kOpAdc: |
| 382 | opcode = kThumb2AdcRRR; |
| 383 | break; |
| 384 | case kOpAnd: |
| 385 | opcode = kThumb2AndRRR; |
| 386 | break; |
| 387 | case kOpBic: |
| 388 | opcode = kThumb2BicRRR; |
| 389 | break; |
| 390 | case kOpXor: |
| 391 | opcode = kThumb2EorRRR; |
| 392 | break; |
| 393 | case kOpMul: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 394 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 395 | opcode = kThumb2MulRRR; |
| 396 | break; |
| 397 | case kOpOr: |
| 398 | opcode = kThumb2OrrRRR; |
| 399 | break; |
| 400 | case kOpSbc: |
| 401 | opcode = kThumb2SbcRRR; |
| 402 | break; |
| 403 | case kOpLsl: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 404 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 405 | opcode = kThumb2LslRRR; |
| 406 | break; |
| 407 | case kOpLsr: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 408 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 409 | opcode = kThumb2LsrRRR; |
| 410 | break; |
| 411 | case kOpAsr: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 412 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 413 | opcode = kThumb2AsrRRR; |
| 414 | break; |
| 415 | case kOpRor: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 416 | DCHECK_EQ(shift, 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 417 | opcode = kThumb2RorRRR; |
| 418 | break; |
| 419 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 420 | LOG(FATAL) << "Bad opcode: " << (int)op; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 421 | break; |
| 422 | } |
Elliott Hughes | f5a7a47 | 2011-10-07 14:31:02 -0700 | [diff] [blame] | 423 | DCHECK_GE(static_cast<int>(opcode), 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 424 | if (EncodingMap[opcode].flags & IS_QUAD_OP) |
| 425 | return newLIR4(cUnit, opcode, rDest, rSrc1, rSrc2, shift); |
| 426 | else { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 427 | DCHECK(EncodingMap[opcode].flags & IS_TERTIARY_OP); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 428 | return newLIR3(cUnit, opcode, rDest, rSrc1, rSrc2); |
| 429 | } |
| 430 | } |
| 431 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 432 | STATIC ArmLIR* opRegRegReg(CompilationUnit* cUnit, OpKind op, int rDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 433 | int rSrc1, int rSrc2) |
| 434 | { |
| 435 | return opRegRegRegShift(cUnit, op, rDest, rSrc1, rSrc2, 0); |
| 436 | } |
| 437 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 438 | STATIC ArmLIR* opRegRegImm(CompilationUnit* cUnit, OpKind op, int rDest, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 439 | int rSrc1, int value) |
| 440 | { |
| 441 | ArmLIR* res; |
| 442 | bool neg = (value < 0); |
| 443 | int absValue = (neg) ? -value : value; |
| 444 | ArmOpcode opcode = kThumbBkpt; |
| 445 | ArmOpcode altOpcode = kThumbBkpt; |
| 446 | bool allLowRegs = (LOWREG(rDest) && LOWREG(rSrc1)); |
| 447 | int modImm = modifiedImmediate(value); |
| 448 | int modImmNeg = modifiedImmediate(-value); |
| 449 | |
| 450 | switch(op) { |
| 451 | case kOpLsl: |
| 452 | if (allLowRegs) |
| 453 | return newLIR3(cUnit, kThumbLslRRI5, rDest, rSrc1, value); |
| 454 | else |
| 455 | return newLIR3(cUnit, kThumb2LslRRI5, rDest, rSrc1, value); |
| 456 | case kOpLsr: |
| 457 | if (allLowRegs) |
| 458 | return newLIR3(cUnit, kThumbLsrRRI5, rDest, rSrc1, value); |
| 459 | else |
| 460 | return newLIR3(cUnit, kThumb2LsrRRI5, rDest, rSrc1, value); |
| 461 | case kOpAsr: |
| 462 | if (allLowRegs) |
| 463 | return newLIR3(cUnit, kThumbAsrRRI5, rDest, rSrc1, value); |
| 464 | else |
| 465 | return newLIR3(cUnit, kThumb2AsrRRI5, rDest, rSrc1, value); |
| 466 | case kOpRor: |
| 467 | return newLIR3(cUnit, kThumb2RorRRI5, rDest, rSrc1, value); |
| 468 | case kOpAdd: |
| 469 | if (LOWREG(rDest) && (rSrc1 == r13sp) && |
| 470 | (value <= 1020) && ((value & 0x3)==0)) { |
| 471 | return newLIR3(cUnit, kThumbAddSpRel, rDest, rSrc1, |
| 472 | value >> 2); |
| 473 | } else if (LOWREG(rDest) && (rSrc1 == r15pc) && |
| 474 | (value <= 1020) && ((value & 0x3)==0)) { |
| 475 | return newLIR3(cUnit, kThumbAddPcRel, rDest, rSrc1, |
| 476 | value >> 2); |
| 477 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 478 | // Note: intentional fallthrough |
| 479 | case kOpSub: |
| 480 | if (allLowRegs && ((absValue & 0x7) == absValue)) { |
| 481 | if (op == kOpAdd) |
| 482 | opcode = (neg) ? kThumbSubRRI3 : kThumbAddRRI3; |
| 483 | else |
| 484 | opcode = (neg) ? kThumbAddRRI3 : kThumbSubRRI3; |
| 485 | return newLIR3(cUnit, opcode, rDest, rSrc1, absValue); |
| 486 | } else if ((absValue & 0xff) == absValue) { |
| 487 | if (op == kOpAdd) |
| 488 | opcode = (neg) ? kThumb2SubRRI12 : kThumb2AddRRI12; |
| 489 | else |
| 490 | opcode = (neg) ? kThumb2AddRRI12 : kThumb2SubRRI12; |
| 491 | return newLIR3(cUnit, opcode, rDest, rSrc1, absValue); |
| 492 | } |
| 493 | if (modImmNeg >= 0) { |
| 494 | op = (op == kOpAdd) ? kOpSub : kOpAdd; |
| 495 | modImm = modImmNeg; |
| 496 | } |
| 497 | if (op == kOpSub) { |
| 498 | opcode = kThumb2SubRRI8; |
| 499 | altOpcode = kThumb2SubRRR; |
buzbee | 3b5d379 | 2011-09-20 11:01:40 -0700 | [diff] [blame] | 500 | } else { |
| 501 | opcode = kThumb2AddRRI8; |
| 502 | altOpcode = kThumb2AddRRR; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 503 | } |
| 504 | break; |
| 505 | case kOpAdc: |
| 506 | opcode = kThumb2AdcRRI8; |
| 507 | altOpcode = kThumb2AdcRRR; |
| 508 | break; |
| 509 | case kOpSbc: |
| 510 | opcode = kThumb2SbcRRI8; |
| 511 | altOpcode = kThumb2SbcRRR; |
| 512 | break; |
| 513 | case kOpOr: |
| 514 | opcode = kThumb2OrrRRI8; |
| 515 | altOpcode = kThumb2OrrRRR; |
| 516 | break; |
| 517 | case kOpAnd: |
| 518 | opcode = kThumb2AndRRI8; |
| 519 | altOpcode = kThumb2AndRRR; |
| 520 | break; |
| 521 | case kOpXor: |
| 522 | opcode = kThumb2EorRRI8; |
| 523 | altOpcode = kThumb2EorRRR; |
| 524 | break; |
| 525 | case kOpMul: |
| 526 | //TUNING: power of 2, shift & add |
| 527 | modImm = -1; |
| 528 | altOpcode = kThumb2MulRRR; |
| 529 | break; |
| 530 | case kOpCmp: { |
| 531 | int modImm = modifiedImmediate(value); |
| 532 | ArmLIR* res; |
| 533 | if (modImm >= 0) { |
| 534 | res = newLIR2(cUnit, kThumb2CmpRI8, rSrc1, modImm); |
| 535 | } else { |
| 536 | int rTmp = oatAllocTemp(cUnit); |
| 537 | res = loadConstant(cUnit, rTmp, value); |
| 538 | opRegReg(cUnit, kOpCmp, rSrc1, rTmp); |
| 539 | oatFreeTemp(cUnit, rTmp); |
| 540 | } |
| 541 | return res; |
| 542 | } |
| 543 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 544 | LOG(FATAL) << "Bad opcode: " << (int)op; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | if (modImm >= 0) { |
| 548 | return newLIR3(cUnit, opcode, rDest, rSrc1, modImm); |
| 549 | } else { |
| 550 | int rScratch = oatAllocTemp(cUnit); |
| 551 | loadConstant(cUnit, rScratch, value); |
| 552 | if (EncodingMap[altOpcode].flags & IS_QUAD_OP) |
| 553 | res = newLIR4(cUnit, altOpcode, rDest, rSrc1, rScratch, 0); |
| 554 | else |
| 555 | res = newLIR3(cUnit, altOpcode, rDest, rSrc1, rScratch); |
| 556 | oatFreeTemp(cUnit, rScratch); |
| 557 | return res; |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | /* Handle Thumb-only variants here - otherwise punt to opRegRegImm */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 562 | STATIC ArmLIR* opRegImm(CompilationUnit* cUnit, OpKind op, int rDestSrc1, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 563 | int value) |
| 564 | { |
| 565 | bool neg = (value < 0); |
| 566 | int absValue = (neg) ? -value : value; |
| 567 | bool shortForm = (((absValue & 0xff) == absValue) && LOWREG(rDestSrc1)); |
| 568 | ArmOpcode opcode = kThumbBkpt; |
| 569 | switch (op) { |
| 570 | case kOpAdd: |
| 571 | if ( !neg && (rDestSrc1 == r13sp) && (value <= 508)) { /* sp */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 572 | DCHECK_EQ((value & 0x3), 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 573 | return newLIR1(cUnit, kThumbAddSpI7, value >> 2); |
| 574 | } else if (shortForm) { |
| 575 | opcode = (neg) ? kThumbSubRI8 : kThumbAddRI8; |
| 576 | } |
| 577 | break; |
| 578 | case kOpSub: |
| 579 | if (!neg && (rDestSrc1 == r13sp) && (value <= 508)) { /* sp */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 580 | DCHECK_EQ((value & 0x3), 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 581 | return newLIR1(cUnit, kThumbSubSpI7, value >> 2); |
| 582 | } else if (shortForm) { |
| 583 | opcode = (neg) ? kThumbAddRI8 : kThumbSubRI8; |
| 584 | } |
| 585 | break; |
| 586 | case kOpCmp: |
| 587 | if (LOWREG(rDestSrc1) && shortForm) |
| 588 | opcode = (shortForm) ? kThumbCmpRI8 : kThumbCmpRR; |
| 589 | else if (LOWREG(rDestSrc1)) |
| 590 | opcode = kThumbCmpRR; |
| 591 | else { |
| 592 | shortForm = false; |
| 593 | opcode = kThumbCmpHL; |
| 594 | } |
| 595 | break; |
| 596 | default: |
| 597 | /* Punt to opRegRegImm - if bad case catch it there */ |
| 598 | shortForm = false; |
| 599 | break; |
| 600 | } |
| 601 | if (shortForm) |
| 602 | return newLIR2(cUnit, opcode, rDestSrc1, absValue); |
| 603 | else { |
| 604 | return opRegRegImm(cUnit, op, rDestSrc1, rDestSrc1, value); |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | /* |
| 609 | * Determine whether value can be encoded as a Thumb2 floating point |
| 610 | * immediate. If not, return -1. If so return encoded 8-bit value. |
| 611 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 612 | STATIC int encodeImmDoubleHigh(int value) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 613 | { |
| 614 | int res; |
| 615 | int bitA = (value & 0x80000000) >> 31; |
| 616 | int notBitB = (value & 0x40000000) >> 30; |
| 617 | int bitB = (value & 0x20000000) >> 29; |
| 618 | int bSmear = (value & 0x3fc00000) >> 22; |
| 619 | int slice = (value & 0x003f0000) >> 16; |
| 620 | int zeroes = (value & 0x0000ffff); |
| 621 | if (zeroes != 0) |
| 622 | return -1; |
| 623 | if (bitB) { |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 624 | if ((notBitB != 0) || (bSmear != 0xff)) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 625 | return -1; |
| 626 | } else { |
| 627 | if ((notBitB != 1) || (bSmear != 0x0)) |
| 628 | return -1; |
| 629 | } |
| 630 | res = (bitA << 7) | (bitB << 6) | slice; |
| 631 | return res; |
| 632 | } |
| 633 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 634 | STATIC int encodeImmDouble(int valLo, int valHi) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 635 | { |
| 636 | int res = -1; |
| 637 | if (valLo == 0) |
| 638 | res = encodeImmDoubleHigh(valHi); |
| 639 | return res; |
| 640 | } |
| 641 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 642 | STATIC ArmLIR* loadConstantValueWide(CompilationUnit* cUnit, int rDestLo, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 643 | int rDestHi, int valLo, int valHi) |
| 644 | { |
| 645 | int encodedImm = encodeImmDouble(valLo, valHi); |
| 646 | ArmLIR* res; |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 647 | if (FPREG(rDestLo)) { |
| 648 | if (encodedImm >= 0) { |
| 649 | res = newLIR2(cUnit, kThumb2Vmovd_IMM8, S2D(rDestLo, rDestHi), |
| 650 | encodedImm); |
| 651 | } else { |
| 652 | ArmLIR* dataTarget = scanLiteralPoolWide(cUnit->literalList, valLo, |
| 653 | valHi); |
| 654 | if (dataTarget == NULL) { |
| 655 | dataTarget = addWideData(cUnit, &cUnit->literalList, valLo, |
| 656 | valHi); |
| 657 | } |
| 658 | ArmLIR* loadPcRel = (ArmLIR* ) oatNew(sizeof(ArmLIR), true); |
| 659 | loadPcRel->generic.dalvikOffset = cUnit->currentDalvikOffset; |
| 660 | loadPcRel->opcode = kThumb2Vldrd; |
| 661 | loadPcRel->generic.target = (LIR* ) dataTarget; |
| 662 | loadPcRel->operands[0] = S2D(rDestLo, rDestHi); |
| 663 | loadPcRel->operands[1] = r15pc; |
| 664 | setupResourceMasks(loadPcRel); |
| 665 | setMemRefType(loadPcRel, true, kLiteral); |
buzbee | bbaf894 | 2011-10-02 13:08:29 -0700 | [diff] [blame] | 666 | loadPcRel->aliasInfo = (intptr_t)dataTarget; |
buzbee | 03fa263 | 2011-09-20 17:10:57 -0700 | [diff] [blame] | 667 | oatAppendLIR(cUnit, (LIR* ) loadPcRel); |
| 668 | res = loadPcRel; |
| 669 | } |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 670 | } else { |
| 671 | res = loadConstantNoClobber(cUnit, rDestLo, valLo); |
| 672 | loadConstantNoClobber(cUnit, rDestHi, valHi); |
| 673 | } |
| 674 | return res; |
| 675 | } |
| 676 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 677 | STATIC int encodeShift(int code, int amount) { |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 678 | return ((amount & 0x1f) << 2) | code; |
| 679 | } |
| 680 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 681 | STATIC ArmLIR* loadBaseIndexed(CompilationUnit* cUnit, int rBase, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 682 | int rIndex, int rDest, int scale, OpSize size) |
| 683 | { |
| 684 | bool allLowRegs = LOWREG(rBase) && LOWREG(rIndex) && LOWREG(rDest); |
| 685 | ArmLIR* load; |
| 686 | ArmOpcode opcode = kThumbBkpt; |
| 687 | bool thumbForm = (allLowRegs && (scale == 0)); |
| 688 | int regPtr; |
| 689 | |
| 690 | if (FPREG(rDest)) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 691 | DCHECK(SINGLEREG(rDest)); |
| 692 | DCHECK((size == kWord) || (size == kSingle)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 693 | opcode = kThumb2Vldrs; |
| 694 | size = kSingle; |
| 695 | } else { |
| 696 | if (size == kSingle) |
| 697 | size = kWord; |
| 698 | } |
| 699 | |
| 700 | switch (size) { |
| 701 | case kSingle: |
| 702 | regPtr = oatAllocTemp(cUnit); |
| 703 | if (scale) { |
| 704 | newLIR4(cUnit, kThumb2AddRRR, regPtr, rBase, rIndex, |
| 705 | encodeShift(kArmLsl, scale)); |
| 706 | } else { |
| 707 | opRegRegReg(cUnit, kOpAdd, regPtr, rBase, rIndex); |
| 708 | } |
| 709 | load = newLIR3(cUnit, opcode, rDest, regPtr, 0); |
| 710 | return load; |
| 711 | case kWord: |
| 712 | opcode = (thumbForm) ? kThumbLdrRRR : kThumb2LdrRRR; |
| 713 | break; |
| 714 | case kUnsignedHalf: |
| 715 | opcode = (thumbForm) ? kThumbLdrhRRR : kThumb2LdrhRRR; |
| 716 | break; |
| 717 | case kSignedHalf: |
| 718 | opcode = (thumbForm) ? kThumbLdrshRRR : kThumb2LdrshRRR; |
| 719 | break; |
| 720 | case kUnsignedByte: |
| 721 | opcode = (thumbForm) ? kThumbLdrbRRR : kThumb2LdrbRRR; |
| 722 | break; |
| 723 | case kSignedByte: |
| 724 | opcode = (thumbForm) ? kThumbLdrsbRRR : kThumb2LdrsbRRR; |
| 725 | break; |
| 726 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 727 | LOG(FATAL) << "Bad size: " << (int)size; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 728 | } |
| 729 | if (thumbForm) |
| 730 | load = newLIR3(cUnit, opcode, rDest, rBase, rIndex); |
| 731 | else |
| 732 | load = newLIR4(cUnit, opcode, rDest, rBase, rIndex, scale); |
| 733 | |
| 734 | return load; |
| 735 | } |
| 736 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 737 | STATIC ArmLIR* storeBaseIndexed(CompilationUnit* cUnit, int rBase, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 738 | int rIndex, int rSrc, int scale, OpSize size) |
| 739 | { |
| 740 | bool allLowRegs = LOWREG(rBase) && LOWREG(rIndex) && LOWREG(rSrc); |
| 741 | ArmLIR* store; |
| 742 | ArmOpcode opcode = kThumbBkpt; |
| 743 | bool thumbForm = (allLowRegs && (scale == 0)); |
| 744 | int regPtr; |
| 745 | |
| 746 | if (FPREG(rSrc)) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 747 | DCHECK(SINGLEREG(rSrc)); |
| 748 | DCHECK((size == kWord) || (size == kSingle)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 749 | opcode = kThumb2Vstrs; |
| 750 | size = kSingle; |
| 751 | } else { |
| 752 | if (size == kSingle) |
| 753 | size = kWord; |
| 754 | } |
| 755 | |
| 756 | switch (size) { |
| 757 | case kSingle: |
| 758 | regPtr = oatAllocTemp(cUnit); |
| 759 | if (scale) { |
| 760 | newLIR4(cUnit, kThumb2AddRRR, regPtr, rBase, rIndex, |
| 761 | encodeShift(kArmLsl, scale)); |
| 762 | } else { |
| 763 | opRegRegReg(cUnit, kOpAdd, regPtr, rBase, rIndex); |
| 764 | } |
| 765 | store = newLIR3(cUnit, opcode, rSrc, regPtr, 0); |
| 766 | return store; |
| 767 | case kWord: |
| 768 | opcode = (thumbForm) ? kThumbStrRRR : kThumb2StrRRR; |
| 769 | break; |
| 770 | case kUnsignedHalf: |
| 771 | case kSignedHalf: |
| 772 | opcode = (thumbForm) ? kThumbStrhRRR : kThumb2StrhRRR; |
| 773 | break; |
| 774 | case kUnsignedByte: |
| 775 | case kSignedByte: |
| 776 | opcode = (thumbForm) ? kThumbStrbRRR : kThumb2StrbRRR; |
| 777 | break; |
| 778 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 779 | LOG(FATAL) << "Bad size: " << (int)size; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 780 | } |
| 781 | if (thumbForm) |
| 782 | store = newLIR3(cUnit, opcode, rSrc, rBase, rIndex); |
| 783 | else |
| 784 | store = newLIR4(cUnit, opcode, rSrc, rBase, rIndex, scale); |
| 785 | |
| 786 | return store; |
| 787 | } |
| 788 | |
| 789 | /* |
| 790 | * Load value from base + displacement. Optionally perform null check |
| 791 | * on base (which must have an associated sReg and MIR). If not |
| 792 | * performing null check, incoming MIR can be null. |
| 793 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 794 | STATIC ArmLIR* loadBaseDispBody(CompilationUnit* cUnit, MIR* mir, int rBase, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 795 | int displacement, int rDest, int rDestHi, |
| 796 | OpSize size, int sReg) |
| 797 | { |
| 798 | ArmLIR* res; |
| 799 | ArmLIR* load; |
| 800 | ArmOpcode opcode = kThumbBkpt; |
| 801 | bool shortForm = false; |
| 802 | bool thumb2Form = (displacement < 4092 && displacement >= 0); |
| 803 | bool allLowRegs = (LOWREG(rBase) && LOWREG(rDest)); |
| 804 | int encodedDisp = displacement; |
| 805 | |
| 806 | switch (size) { |
| 807 | case kDouble: |
| 808 | case kLong: |
| 809 | if (FPREG(rDest)) { |
| 810 | if (SINGLEREG(rDest)) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 811 | DCHECK(FPREG(rDestHi)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 812 | rDest = S2D(rDest, rDestHi); |
| 813 | } |
| 814 | opcode = kThumb2Vldrd; |
| 815 | if (displacement <= 1020) { |
| 816 | shortForm = true; |
| 817 | encodedDisp >>= 2; |
| 818 | } |
| 819 | break; |
| 820 | } else { |
| 821 | res = loadBaseDispBody(cUnit, mir, rBase, displacement, rDest, |
| 822 | -1, kWord, sReg); |
| 823 | loadBaseDispBody(cUnit, NULL, rBase, displacement + 4, rDestHi, |
| 824 | -1, kWord, INVALID_SREG); |
| 825 | return res; |
| 826 | } |
| 827 | case kSingle: |
| 828 | case kWord: |
| 829 | if (FPREG(rDest)) { |
| 830 | opcode = kThumb2Vldrs; |
| 831 | if (displacement <= 1020) { |
| 832 | shortForm = true; |
| 833 | encodedDisp >>= 2; |
| 834 | } |
| 835 | break; |
| 836 | } |
| 837 | if (LOWREG(rDest) && (rBase == r15pc) && |
| 838 | (displacement <= 1020) && (displacement >= 0)) { |
| 839 | shortForm = true; |
| 840 | encodedDisp >>= 2; |
| 841 | opcode = kThumbLdrPcRel; |
| 842 | } else if (LOWREG(rDest) && (rBase == r13sp) && |
| 843 | (displacement <= 1020) && (displacement >= 0)) { |
| 844 | shortForm = true; |
| 845 | encodedDisp >>= 2; |
| 846 | opcode = kThumbLdrSpRel; |
| 847 | } else if (allLowRegs && displacement < 128 && displacement >= 0) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 848 | DCHECK_EQ((displacement & 0x3), 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 849 | shortForm = true; |
| 850 | encodedDisp >>= 2; |
| 851 | opcode = kThumbLdrRRI5; |
| 852 | } else if (thumb2Form) { |
| 853 | shortForm = true; |
| 854 | opcode = kThumb2LdrRRI12; |
| 855 | } |
| 856 | break; |
| 857 | case kUnsignedHalf: |
| 858 | if (allLowRegs && displacement < 64 && displacement >= 0) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 859 | DCHECK_EQ((displacement & 0x1), 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 860 | shortForm = true; |
| 861 | encodedDisp >>= 1; |
| 862 | opcode = kThumbLdrhRRI5; |
| 863 | } else if (displacement < 4092 && displacement >= 0) { |
| 864 | shortForm = true; |
| 865 | opcode = kThumb2LdrhRRI12; |
| 866 | } |
| 867 | break; |
| 868 | case kSignedHalf: |
| 869 | if (thumb2Form) { |
| 870 | shortForm = true; |
| 871 | opcode = kThumb2LdrshRRI12; |
| 872 | } |
| 873 | break; |
| 874 | case kUnsignedByte: |
| 875 | if (allLowRegs && displacement < 32 && displacement >= 0) { |
| 876 | shortForm = true; |
| 877 | opcode = kThumbLdrbRRI5; |
| 878 | } else if (thumb2Form) { |
| 879 | shortForm = true; |
| 880 | opcode = kThumb2LdrbRRI12; |
| 881 | } |
| 882 | break; |
| 883 | case kSignedByte: |
| 884 | if (thumb2Form) { |
| 885 | shortForm = true; |
| 886 | opcode = kThumb2LdrsbRRI12; |
| 887 | } |
| 888 | break; |
| 889 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 890 | LOG(FATAL) << "Bad size: " << (int)size; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 891 | } |
| 892 | |
| 893 | if (shortForm) { |
| 894 | load = res = newLIR3(cUnit, opcode, rDest, rBase, encodedDisp); |
| 895 | } else { |
| 896 | int regOffset = oatAllocTemp(cUnit); |
| 897 | res = loadConstant(cUnit, regOffset, encodedDisp); |
| 898 | load = loadBaseIndexed(cUnit, rBase, regOffset, rDest, 0, size); |
| 899 | oatFreeTemp(cUnit, regOffset); |
| 900 | } |
| 901 | |
| 902 | // TODO: in future may need to differentiate Dalvik accesses w/ spills |
| 903 | if (rBase == rSP) { |
| 904 | annotateDalvikRegAccess(load, displacement >> 2, true /* isLoad */); |
| 905 | } |
| 906 | return load; |
| 907 | } |
| 908 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 909 | STATIC ArmLIR* loadBaseDisp(CompilationUnit* cUnit, MIR* mir, int rBase, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 910 | int displacement, int rDest, OpSize size, |
| 911 | int sReg) |
| 912 | { |
| 913 | return loadBaseDispBody(cUnit, mir, rBase, displacement, rDest, -1, |
| 914 | size, sReg); |
| 915 | } |
| 916 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 917 | STATIC ArmLIR* loadBaseDispWide(CompilationUnit* cUnit, MIR* mir, int rBase, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 918 | int displacement, int rDestLo, int rDestHi, |
| 919 | int sReg) |
| 920 | { |
| 921 | return loadBaseDispBody(cUnit, mir, rBase, displacement, rDestLo, rDestHi, |
| 922 | kLong, sReg); |
| 923 | } |
| 924 | |
| 925 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 926 | STATIC ArmLIR* storeBaseDispBody(CompilationUnit* cUnit, int rBase, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 927 | int displacement, int rSrc, int rSrcHi, |
| 928 | OpSize size) |
| 929 | { |
| 930 | ArmLIR* res, *store; |
| 931 | ArmOpcode opcode = kThumbBkpt; |
| 932 | bool shortForm = false; |
| 933 | bool thumb2Form = (displacement < 4092 && displacement >= 0); |
| 934 | bool allLowRegs = (LOWREG(rBase) && LOWREG(rSrc)); |
| 935 | int encodedDisp = displacement; |
| 936 | |
| 937 | switch (size) { |
| 938 | case kLong: |
| 939 | case kDouble: |
| 940 | if (!FPREG(rSrc)) { |
| 941 | res = storeBaseDispBody(cUnit, rBase, displacement, rSrc, |
| 942 | -1, kWord); |
| 943 | storeBaseDispBody(cUnit, rBase, displacement + 4, rSrcHi, |
| 944 | -1, kWord); |
| 945 | return res; |
| 946 | } |
| 947 | if (SINGLEREG(rSrc)) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 948 | DCHECK(FPREG(rSrcHi)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 949 | rSrc = S2D(rSrc, rSrcHi); |
| 950 | } |
| 951 | opcode = kThumb2Vstrd; |
| 952 | if (displacement <= 1020) { |
| 953 | shortForm = true; |
| 954 | encodedDisp >>= 2; |
| 955 | } |
| 956 | break; |
| 957 | case kSingle: |
| 958 | case kWord: |
| 959 | if (FPREG(rSrc)) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 960 | DCHECK(SINGLEREG(rSrc)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 961 | opcode = kThumb2Vstrs; |
| 962 | if (displacement <= 1020) { |
| 963 | shortForm = true; |
| 964 | encodedDisp >>= 2; |
| 965 | } |
| 966 | break; |
| 967 | } |
| 968 | if (allLowRegs && displacement < 128 && displacement >= 0) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 969 | DCHECK_EQ((displacement & 0x3), 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 970 | shortForm = true; |
| 971 | encodedDisp >>= 2; |
| 972 | opcode = kThumbStrRRI5; |
| 973 | } else if (thumb2Form) { |
| 974 | shortForm = true; |
| 975 | opcode = kThumb2StrRRI12; |
| 976 | } |
| 977 | break; |
| 978 | case kUnsignedHalf: |
| 979 | case kSignedHalf: |
| 980 | if (allLowRegs && displacement < 64 && displacement >= 0) { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 981 | DCHECK_EQ((displacement & 0x1), 0); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 982 | shortForm = true; |
| 983 | encodedDisp >>= 1; |
| 984 | opcode = kThumbStrhRRI5; |
| 985 | } else if (thumb2Form) { |
| 986 | shortForm = true; |
| 987 | opcode = kThumb2StrhRRI12; |
| 988 | } |
| 989 | break; |
| 990 | case kUnsignedByte: |
| 991 | case kSignedByte: |
| 992 | if (allLowRegs && displacement < 32 && displacement >= 0) { |
| 993 | shortForm = true; |
| 994 | opcode = kThumbStrbRRI5; |
| 995 | } else if (thumb2Form) { |
| 996 | shortForm = true; |
| 997 | opcode = kThumb2StrbRRI12; |
| 998 | } |
| 999 | break; |
| 1000 | default: |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1001 | LOG(FATAL) << "Bad size: " << (int)size; |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1002 | } |
| 1003 | if (shortForm) { |
| 1004 | store = res = newLIR3(cUnit, opcode, rSrc, rBase, encodedDisp); |
| 1005 | } else { |
| 1006 | int rScratch = oatAllocTemp(cUnit); |
| 1007 | res = loadConstant(cUnit, rScratch, encodedDisp); |
| 1008 | store = storeBaseIndexed(cUnit, rBase, rScratch, rSrc, 0, size); |
| 1009 | oatFreeTemp(cUnit, rScratch); |
| 1010 | } |
| 1011 | |
| 1012 | // TODO: In future, may need to differentiate Dalvik & spill accesses |
| 1013 | if (rBase == rSP) { |
| 1014 | annotateDalvikRegAccess(store, displacement >> 2, false /* isLoad */); |
| 1015 | } |
| 1016 | return res; |
| 1017 | } |
| 1018 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1019 | STATIC ArmLIR* storeBaseDisp(CompilationUnit* cUnit, int rBase, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1020 | int displacement, int rSrc, OpSize size) |
| 1021 | { |
| 1022 | return storeBaseDispBody(cUnit, rBase, displacement, rSrc, -1, size); |
| 1023 | } |
| 1024 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1025 | STATIC ArmLIR* storeBaseDispWide(CompilationUnit* cUnit, int rBase, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1026 | int displacement, int rSrcLo, int rSrcHi) |
| 1027 | { |
| 1028 | return storeBaseDispBody(cUnit, rBase, displacement, rSrcLo, rSrcHi, kLong); |
| 1029 | } |
| 1030 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1031 | STATIC void storePair(CompilationUnit* cUnit, int base, int lowReg, int highReg) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1032 | { |
| 1033 | storeBaseDispWide(cUnit, base, 0, lowReg, highReg); |
| 1034 | } |
| 1035 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1036 | STATIC void loadPair(CompilationUnit* cUnit, int base, int lowReg, int highReg) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1037 | { |
| 1038 | loadBaseDispWide(cUnit, NULL, base, 0, lowReg, highReg, INVALID_SREG); |
| 1039 | } |
| 1040 | |
| 1041 | /* |
| 1042 | * Generate a register comparison to an immediate and branch. Caller |
| 1043 | * is responsible for setting branch target field. |
| 1044 | */ |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1045 | STATIC ArmLIR* genCmpImmBranch(CompilationUnit* cUnit, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1046 | ArmConditionCode cond, int reg, |
| 1047 | int checkValue) |
| 1048 | { |
| 1049 | ArmLIR* branch; |
| 1050 | int modImm; |
| 1051 | if ((LOWREG(reg)) && (checkValue == 0) && |
| 1052 | ((cond == kArmCondEq) || (cond == kArmCondNe))) { |
| 1053 | branch = newLIR2(cUnit, |
| 1054 | (cond == kArmCondEq) ? kThumb2Cbz : kThumb2Cbnz, |
| 1055 | reg, 0); |
| 1056 | } else { |
| 1057 | modImm = modifiedImmediate(checkValue); |
| 1058 | if (LOWREG(reg) && ((checkValue & 0xff) == checkValue)) { |
| 1059 | newLIR2(cUnit, kThumbCmpRI8, reg, checkValue); |
| 1060 | } else if (modImm >= 0) { |
| 1061 | newLIR2(cUnit, kThumb2CmpRI8, reg, modImm); |
| 1062 | } else { |
| 1063 | int tReg = oatAllocTemp(cUnit); |
| 1064 | loadConstant(cUnit, tReg, checkValue); |
| 1065 | opRegReg(cUnit, kOpCmp, reg, tReg); |
| 1066 | } |
| 1067 | branch = newLIR2(cUnit, kThumbBCond, 0, cond); |
| 1068 | } |
| 1069 | return branch; |
| 1070 | } |
| 1071 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1072 | STATIC ArmLIR* fpRegCopy(CompilationUnit* cUnit, int rDest, int rSrc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1073 | { |
| 1074 | ArmLIR* res = (ArmLIR* ) oatNew(sizeof(ArmLIR), true); |
| 1075 | res->generic.dalvikOffset = cUnit->currentDalvikOffset; |
| 1076 | res->operands[0] = rDest; |
| 1077 | res->operands[1] = rSrc; |
| 1078 | if (rDest == rSrc) { |
| 1079 | res->flags.isNop = true; |
| 1080 | } else { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1081 | DCHECK_EQ(DOUBLEREG(rDest), DOUBLEREG(rSrc)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1082 | if (DOUBLEREG(rDest)) { |
| 1083 | res->opcode = kThumb2Vmovd; |
| 1084 | } else { |
| 1085 | if (SINGLEREG(rDest)) { |
| 1086 | res->opcode = SINGLEREG(rSrc) ? kThumb2Vmovs : kThumb2Fmsr; |
| 1087 | } else { |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1088 | DCHECK(SINGLEREG(rSrc)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1089 | res->opcode = kThumb2Fmrs; |
| 1090 | } |
| 1091 | } |
| 1092 | res->operands[0] = rDest; |
| 1093 | res->operands[1] = rSrc; |
| 1094 | } |
| 1095 | setupResourceMasks(res); |
| 1096 | return res; |
| 1097 | } |
| 1098 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1099 | STATIC ArmLIR* genRegCopyNoInsert(CompilationUnit* cUnit, int rDest, int rSrc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1100 | { |
| 1101 | ArmLIR* res; |
| 1102 | ArmOpcode opcode; |
| 1103 | if (FPREG(rDest) || FPREG(rSrc)) |
| 1104 | return fpRegCopy(cUnit, rDest, rSrc); |
| 1105 | res = (ArmLIR* ) oatNew(sizeof(ArmLIR), true); |
| 1106 | res->generic.dalvikOffset = cUnit->currentDalvikOffset; |
| 1107 | if (LOWREG(rDest) && LOWREG(rSrc)) |
| 1108 | opcode = kThumbMovRR; |
| 1109 | else if (!LOWREG(rDest) && !LOWREG(rSrc)) |
| 1110 | opcode = kThumbMovRR_H2H; |
| 1111 | else if (LOWREG(rDest)) |
| 1112 | opcode = kThumbMovRR_H2L; |
| 1113 | else |
| 1114 | opcode = kThumbMovRR_L2H; |
| 1115 | |
| 1116 | res->operands[0] = rDest; |
| 1117 | res->operands[1] = rSrc; |
| 1118 | res->opcode = opcode; |
| 1119 | setupResourceMasks(res); |
| 1120 | if (rDest == rSrc) { |
| 1121 | res->flags.isNop = true; |
| 1122 | } |
| 1123 | return res; |
| 1124 | } |
| 1125 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1126 | STATIC ArmLIR* genRegCopy(CompilationUnit* cUnit, int rDest, int rSrc) |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1127 | { |
| 1128 | ArmLIR* res = genRegCopyNoInsert(cUnit, rDest, rSrc); |
| 1129 | oatAppendLIR(cUnit, (LIR*)res); |
| 1130 | return res; |
| 1131 | } |
| 1132 | |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1133 | STATIC void genRegCopyWide(CompilationUnit* cUnit, int destLo, int destHi, |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1134 | int srcLo, int srcHi) |
| 1135 | { |
| 1136 | bool destFP = FPREG(destLo) && FPREG(destHi); |
| 1137 | bool srcFP = FPREG(srcLo) && FPREG(srcHi); |
buzbee | ed3e930 | 2011-09-23 17:34:19 -0700 | [diff] [blame] | 1138 | DCHECK_EQ(FPREG(srcLo), FPREG(srcHi)); |
| 1139 | DCHECK_EQ(FPREG(destLo), FPREG(destHi)); |
buzbee | 67bf885 | 2011-08-17 17:51:35 -0700 | [diff] [blame] | 1140 | if (destFP) { |
| 1141 | if (srcFP) { |
| 1142 | genRegCopy(cUnit, S2D(destLo, destHi), S2D(srcLo, srcHi)); |
| 1143 | } else { |
| 1144 | newLIR3(cUnit, kThumb2Fmdrr, S2D(destLo, destHi), srcLo, srcHi); |
| 1145 | } |
| 1146 | } else { |
| 1147 | if (srcFP) { |
| 1148 | newLIR3(cUnit, kThumb2Fmrrd, destLo, destHi, S2D(srcLo, srcHi)); |
| 1149 | } else { |
| 1150 | // Handle overlap |
| 1151 | if (srcHi == destLo) { |
| 1152 | genRegCopy(cUnit, destHi, srcHi); |
| 1153 | genRegCopy(cUnit, destLo, srcLo); |
| 1154 | } else { |
| 1155 | genRegCopy(cUnit, destLo, srcLo); |
| 1156 | genRegCopy(cUnit, destHi, srcHi); |
| 1157 | } |
| 1158 | } |
| 1159 | } |
| 1160 | } |
Elliott Hughes | 11d1b0c | 2012-01-23 16:57:47 -0800 | [diff] [blame^] | 1161 | |
| 1162 | } // namespace art |