lib/Target/CellSPU/SPU64InstrInfo.td

   1 //====--- SPU64InstrInfo.td - Cell SPU 64-bit operations -*- tablegen -*--====//
   2 //
   3 //                     Cell SPU 64-bit operations
   4 //
   5 //===----------------------------------------------------------------------===//
   6
   7 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
   8 // 64-bit comparisons:
   9 //
  10 // 1. The instruction sequences for vector vice scalar differ by a
  11 //    constant. In the scalar case, we're only interested in the
  12 //    top two 32-bit slots, whereas we're interested in an exact
  13 //    all-four-slot match in the vector case.
  14 //
  15 // 2. There are no "immediate" forms, since loading 64-bit constants
  16 //    could be a constant pool load.
  17 //
  18 // 3. i64 setcc results are i32, which are subsequently converted to a FSM
  19 //    mask when used in a select pattern.
  20 //
  21 // 4. v2i64 setcc results are v4i32, which can be converted to a FSM mask (TODO)
  22 //    [Note: this may be moot, since gb produces v4i32 or r32.]
  23 //
  24 // 5. The code sequences for r64 and v2i64 are probably overly conservative,
  25 //    compared to the code that gcc produces.
  26 //
  27 // M00$E B!tes Kan be Pretty N@sTi!!!!! (apologies to Monty!)
  28 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
  29
  30 // selb instruction definition for i64. Note that the selection mask is
  31 // a vector, produced by various forms of FSM:
  32 def SELBr64_cond:
  33   SELBInst<(outs R64C:$rT), (ins R64C:$rA, R64C:$rB, VECREG:$rC),
  34            [/* no pattern */]>;
  35
  36 // The generic i64 select pattern, which assumes that the comparison result
  37 // is in a 32-bit register that contains a select mask pattern (i.e., gather
  38 // bits result):
  39
  40 def : Pat<(select R32C:$rCond, R64C:$rFalse, R64C:$rTrue),
  41           (SELBr64_cond R64C:$rTrue, R64C:$rFalse, (FSMr32 R32C:$rCond))>;
  42
  43 // select the negative condition:
  44 class I64SELECTNegCond<PatFrag cond, CodeFrag compare>:
  45   Pat<(select (i32 (cond R64C:$rA, R64C:$rB)), R64C:$rTrue, R64C:$rFalse),
  46       (SELBr64_cond R64C:$rTrue, R64C:$rFalse, (FSMr32 compare.Fragment))>;
  47
  48 // setcc the negative condition:
  49 class I64SETCCNegCond<PatFrag cond, CodeFrag compare>:
  50   Pat<(cond R64C:$rA, R64C:$rB),
  51       (XORIr32 compare.Fragment, -1)>;
  52
  53 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
  54 // The i64 seteq fragment that does the scalar->vector conversion and
  55 // comparison:
  56 def CEQr64compare:
  57     CodeFrag<(CGTIv4i32 (GBv4i32 (CEQv4i32 (COPY_TO_REGCLASS R64C:$rA, VECREG),
  58                                            (COPY_TO_REGCLASS R64C:$rB, VECREG))), 0xb)>;
  59
  60 // The i64 seteq fragment that does the vector comparison
  61 def CEQv2i64compare:
  62     CodeFrag<(CEQIv4i32 (GBv4i32 (CEQv4i32 VECREG:$rA, VECREG:$rB)), 0xf)>;
  63
  64 // i64 seteq (equality): the setcc result is i32, which is converted to a
  65 // vector FSM mask when used in a select pattern.
  66 //
  67 // v2i64 seteq (equality): the setcc result is v4i32
  68 multiclass CompareEqual64 {
  69   // Plain old comparison, converts back to i32 scalar
  70   def r64: CodeFrag<(i32 (COPY_TO_REGCLASS CEQr64compare.Fragment, R32C))>;
  71   def v2i64: CodeFrag<(i32 (COPY_TO_REGCLASS CEQv2i64compare.Fragment, R32C))>;
  72
  73   // SELB mask from FSM:
  74   def r64mask: CodeFrag<(i32 (COPY_TO_REGCLASS
  75                                (FSMv4i32 CEQr64compare.Fragment), R32C))>;
  76   def v2i64mask: CodeFrag<(i32 (COPY_TO_REGCLASS
  77                                (FSMv4i32 CEQv2i64compare.Fragment), R32C))>;
  78 }
  79
  80 defm I64EQ: CompareEqual64;
  81
  82 def : Pat<(seteq R64C:$rA, R64C:$rB), I64EQr64.Fragment>;
  83 def : Pat<(seteq (v2i64 VECREG:$rA), (v2i64 VECREG:$rB)), I64EQv2i64.Fragment>;
  84
  85 // i64 setne:
  86 def : I64SETCCNegCond<setne, I64EQr64>;
  87 def : I64SELECTNegCond<setne, I64EQr64>;
  88
  89 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
  90 // i64 setugt/setule:
  91 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
  92
  93 def CLGTr64ugt:
  94     CodeFrag<(CLGTv4i32 (COPY_TO_REGCLASS R64C:$rA, VECREG),
  95                         (COPY_TO_REGCLASS R64C:$rB, VECREG))>;
  96
  97 def CLGTr64eq:
  98     CodeFrag<(CEQv4i32 (COPY_TO_REGCLASS R64C:$rA, VECREG),
  99                        (COPY_TO_REGCLASS R64C:$rB, VECREG))>;
 100
 101 def CLGTr64compare:
 102     CodeFrag<(SELBv2i64 CLGTr64ugt.Fragment,
 103                         (XSWDv2i64 CLGTr64ugt.Fragment),
 104                         CLGTr64eq.Fragment)>;
 105
 106 def CLGTv2i64ugt:
 107     CodeFrag<(CLGTv4i32 VECREG:$rA, VECREG:$rB)>;
 108
 109 def CLGTv2i64eq:
 110     CodeFrag<(CEQv4i32 VECREG:$rA, VECREG:$rB)>;
 111
 112 def CLGTv2i64compare:
 113     CodeFrag<(SELBv2i64 CLGTv2i64ugt.Fragment,
 114                         (XSWDv2i64 CLGTr64ugt.Fragment),
 115                         CLGTv2i64eq.Fragment)>;
 116
 117 multiclass CompareLogicalGreaterThan64 {
 118   // Plain old comparison, converts back to i32 scalar
 119   def r64: CodeFrag<(i32 (COPY_TO_REGCLASS CLGTr64compare.Fragment, R32C))>;
 120   def v2i64: CodeFrag<CLGTv2i64compare.Fragment>;
 121
 122   // SELB mask from FSM:
 123   def r64mask: CodeFrag<(i32 (COPY_TO_REGCLASS
 124                                (FSMv4i32 CLGTr64compare.Fragment), R32C))>;
 125   def v2i64mask: CodeFrag<(i32 (COPY_TO_REGCLASS
 126                                (FSMv4i32 CLGTv2i64compare.Fragment), R32C))>;
 127 }
 128
 129 defm I64LGT: CompareLogicalGreaterThan64;
 130
 131 def : Pat<(setugt R64C:$rA, R64C:$rB), I64LGTr64.Fragment>;
 132 //def : Pat<(setugt (v2i64 VECREG:$rA), (v2i64 VECREG:$rB)),
 133 //          I64LGTv2i64.Fragment>;
 134
 135 // i64 setult:
 136 def : I64SETCCNegCond<setule, I64LGTr64>;
 137 def : I64SELECTNegCond<setule, I64LGTr64>;
 138
 139 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 140 // i64 setuge/setult:
 141 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 142
 143 def CLGEr64compare:
 144     CodeFrag<(CGTIv4i32 (GBv4i32 (ORv4i32 CLGTr64ugt.Fragment,
 145                                           CLGTr64eq.Fragment)), 0xb)>;
 146
 147 def CLGEv2i64compare:
 148     CodeFrag<(CEQIv4i32 (GBv4i32 (ORv4i32 CLGTv2i64ugt.Fragment,
 149                                           CLGTv2i64eq.Fragment)), 0xf)>;
 150
 151 multiclass CompareLogicalGreaterEqual64 {
 152   // Plain old comparison, converts back to i32 scalar
 153   def r64: CodeFrag<(i32 (COPY_TO_REGCLASS CLGEr64compare.Fragment, R32C))>;
 154   def v2i64: CodeFrag<CLGEv2i64compare.Fragment>;
 155
 156   // SELB mask from FSM:
 157   def r64mask: CodeFrag<(i32 (COPY_TO_REGCLASS
 158                            (FSMv4i32 CLGEr64compare.Fragment), R32C))>;
 159   def v2i64mask: CodeFrag<(i32 (COPY_TO_REGCLASS
 160                            (FSMv4i32 CLGEv2i64compare.Fragment),R32C))>;
 161 }
 162
 163 defm I64LGE: CompareLogicalGreaterEqual64;
 164
 165 def : Pat<(setuge R64C:$rA, R64C:$rB), I64LGEr64.Fragment>;
 166 def : Pat<(v2i64 (setuge (v2i64 VECREG:$rA), (v2i64 VECREG:$rB))),
 167           I64LGEv2i64.Fragment>;
 168
 169
 170 // i64 setult:
 171 def : I64SETCCNegCond<setult, I64LGEr64>;
 172 def : I64SELECTNegCond<setult, I64LGEr64>;
 173
 174 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 175 // i64 setgt/setle:
 176 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 177
 178 def CGTr64sgt:
 179     CodeFrag<(CGTv4i32 (COPY_TO_REGCLASS R64C:$rA, VECREG),
 180                        (COPY_TO_REGCLASS R64C:$rB, VECREG))>;
 181
 182 def CGTr64eq:
 183     CodeFrag<(CEQv4i32 (COPY_TO_REGCLASS R64C:$rA, VECREG),
 184                        (COPY_TO_REGCLASS R64C:$rB, VECREG))>;
 185
 186 def CGTr64compare:
 187     CodeFrag<(SELBv2i64 CGTr64sgt.Fragment,
 188                         (XSWDv2i64 CGTr64sgt.Fragment),
 189                         CGTr64eq.Fragment)>;
 190
 191 def CGTv2i64sgt:
 192     CodeFrag<(CGTv4i32 VECREG:$rA, VECREG:$rB)>;
 193
 194 def CGTv2i64eq:
 195     CodeFrag<(CEQv4i32 VECREG:$rA, VECREG:$rB)>;
 196
 197 def CGTv2i64compare:
 198     CodeFrag<(SELBv2i64 CGTv2i64sgt.Fragment,
 199                         (XSWDv2i64 CGTr64sgt.Fragment),
 200                         CGTv2i64eq.Fragment)>;
 201
 202 multiclass CompareGreaterThan64 {
 203   // Plain old comparison, converts back to i32 scalar
 204   def r64: CodeFrag<(i32 (COPY_TO_REGCLASS CGTr64compare.Fragment, R32C))>;
 205   def v2i64: CodeFrag<CGTv2i64compare.Fragment>;
 206
 207   // SELB mask from FSM:
 208   def r64mask: CodeFrag<(i32 (COPY_TO_REGCLASS
 209                              (FSMv4i32 CGTr64compare.Fragment), R32C))>;
 210   def v2i64mask: CodeFrag<(i32 (COPY_TO_REGCLASS
 211                                (FSMv4i32 CGTv2i64compare.Fragment), R32C))>;
 212 }
 213
 214 defm I64GT: CompareLogicalGreaterThan64;
 215
 216 def : Pat<(setgt R64C:$rA, R64C:$rB), I64GTr64.Fragment>;
 217 //def : Pat<(setgt (v2i64 VECREG:$rA), (v2i64 VECREG:$rB)),
 218 //                  I64GTv2i64.Fragment>;
 219
 220 // i64 setult:
 221 def : I64SETCCNegCond<setle, I64GTr64>;
 222 def : I64SELECTNegCond<setle, I64GTr64>;
 223
 224 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 225 // i64 setge/setlt:
 226 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 227
 228 def CGEr64compare:
 229     CodeFrag<(CGTIv4i32 (GBv4i32 (ORv4i32 CGTr64sgt.Fragment,
 230                                           CGTr64eq.Fragment)), 0xb)>;
 231
 232 def CGEv2i64compare:
 233     CodeFrag<(CEQIv4i32 (GBv4i32 (ORv4i32 CGTv2i64sgt.Fragment,
 234                                           CGTv2i64eq.Fragment)), 0xf)>;
 235
 236 multiclass CompareGreaterEqual64 {
 237   // Plain old comparison, converts back to i32 scalar
 238   def r64: CodeFrag<(i32 (COPY_TO_REGCLASS CGEr64compare.Fragment, R32C))>;
 239   def v2i64: CodeFrag<CGEv2i64compare.Fragment>;
 240
 241   // SELB mask from FSM:
 242   def r64mask: CodeFrag<(i32 (COPY_TO_REGCLASS (FSMv4i32 CGEr64compare.Fragment),R32C))>;
 243   def v2i64mask: CodeFrag<(i32 (COPY_TO_REGCLASS (FSMv4i32 CGEv2i64compare.Fragment),R32C))>;
 244 }
 245
 246 defm I64GE: CompareGreaterEqual64;
 247
 248 def : Pat<(setge R64C:$rA, R64C:$rB), I64GEr64.Fragment>;
 249 def : Pat<(v2i64 (setge (v2i64 VECREG:$rA), (v2i64 VECREG:$rB))),
 250           I64GEv2i64.Fragment>;
 251
 252 // i64 setult:
 253 def : I64SETCCNegCond<setlt, I64GEr64>;
 254 def : I64SELECTNegCond<setlt, I64GEr64>;
 255
 256 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 257 // v2i64, i64 add
 258 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 259
 260 class v2i64_add_cg<dag lhs, dag rhs>:
 261     CodeFrag<(CGv4i32 lhs, rhs)>;
 262
 263 class v2i64_add_1<dag lhs, dag rhs, dag cg, dag cg_mask>:
 264     CodeFrag<(ADDXv4i32 lhs, rhs, (SHUFBv4i32 cg, cg, cg_mask))>;
 265
 266 class v2i64_add<dag lhs, dag rhs, dag cg_mask>:
 267     v2i64_add_1<lhs, rhs, v2i64_add_cg<lhs, rhs>.Fragment, cg_mask>;
 268
 269 def : Pat<(SPUadd64 R64C:$rA, R64C:$rB, (v4i32 VECREG:$rCGmask)),
 270            (COPY_TO_REGCLASS v2i64_add<(COPY_TO_REGCLASS R64C:$rA, VECREG),
 271                                   (COPY_TO_REGCLASS R64C:$rB, VECREG),
 272                                   (v4i32 VECREG:$rCGmask)>.Fragment, R64C)>;
 273
 274 def : Pat<(SPUadd64 (v2i64 VECREG:$rA), (v2i64 VECREG:$rB),
 275                     (v4i32 VECREG:$rCGmask)),
 276            v2i64_add<(v2i64 VECREG:$rA),
 277                      (v2i64 VECREG:$rB),
 278                      (v4i32 VECREG:$rCGmask)>.Fragment>;
 279
 280 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 281 // v2i64, i64 subtraction
 282 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 283
 284 class v2i64_sub_bg<dag lhs, dag rhs>: CodeFrag<(BGv4i32 lhs, rhs)>;
 285
 286 class v2i64_sub<dag lhs, dag rhs, dag bg, dag bg_mask>:
 287     CodeFrag<(SFXv4i32 lhs, rhs, (SHUFBv4i32 bg, bg, bg_mask))>;
 288
 289 def : Pat<(SPUsub64 R64C:$rA, R64C:$rB, (v4i32 VECREG:$rCGmask)),
 290            (COPY_TO_REGCLASS
 291                v2i64_sub<(COPY_TO_REGCLASS R64C:$rA, VECREG),
 292                          (COPY_TO_REGCLASS R64C:$rB, VECREG),
 293                          v2i64_sub_bg<(COPY_TO_REGCLASS R64C:$rA, VECREG),
 294                                       (COPY_TO_REGCLASS R64C:$rB, VECREG)>.Fragment,
 295                                   (v4i32 VECREG:$rCGmask)>.Fragment, R64C)>;
 296
 297 def : Pat<(SPUsub64 (v2i64 VECREG:$rA), (v2i64 VECREG:$rB),
 298                     (v4i32 VECREG:$rCGmask)),
 299            v2i64_sub<(v2i64 VECREG:$rA),
 300                      (v2i64 VECREG:$rB),
 301                      v2i64_sub_bg<(v2i64 VECREG:$rA),
 302                                   (v2i64 VECREG:$rB)>.Fragment,
 303                      (v4i32 VECREG:$rCGmask)>.Fragment>;
 304
 305 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 306 // v2i64, i64 multiply
 307 //
 308 // Note: i64 multiply is simply the vector->scalar conversion of the
 309 // full-on v2i64 multiply, since the entire vector has to be manipulated
 310 // anyway.
 311 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 312
 313 class v2i64_mul_ahi64<dag rA> :
 314     CodeFrag<(SELBv4i32 rA, (ILv4i32 0), (FSMBIv4i32 0x0f0f))>;
 315
 316 class v2i64_mul_bhi64<dag rB> :
 317     CodeFrag<(SELBv4i32 rB, (ILv4i32 0), (FSMBIv4i32 0x0f0f))>;
 318
 319 class v2i64_mul_alo64<dag rB> :
 320     CodeFrag<(SELBv4i32 rB, (ILv4i32 0), (FSMBIv4i32 0xf0f0))>;
 321
 322 class v2i64_mul_blo64<dag rB> :
 323     CodeFrag<(SELBv4i32 rB, (ILv4i32 0), (FSMBIv4i32 0xf0f0))>;
 324
 325 class v2i64_mul_ashlq2<dag rA>:
 326     CodeFrag<(SHLQBYIv4i32 rA, 0x2)>;
 327
 328 class v2i64_mul_ashlq4<dag rA>:
 329     CodeFrag<(SHLQBYIv4i32 rA, 0x4)>;
 330
 331 class v2i64_mul_bshlq2<dag rB> :
 332     CodeFrag<(SHLQBYIv4i32 rB, 0x2)>;
 333
 334 class v2i64_mul_bshlq4<dag rB> :
 335     CodeFrag<(SHLQBYIv4i32 rB, 0x4)>;
 336
 337 class v2i64_highprod<dag rA, dag rB>:
 338     CodeFrag<(Av4i32
 339                 (Av4i32
 340                   (MPYUv4i32 v2i64_mul_bshlq4<rB>.Fragment,     // a1 x b3
 341                              v2i64_mul_ahi64<rA>.Fragment),
 342                   (MPYHv4i32 v2i64_mul_ahi64<rA>.Fragment,      // a0 x b3
 343                              v2i64_mul_bshlq4<rB>.Fragment)),
 344                 (Av4i32
 345                   (MPYHv4i32 v2i64_mul_bhi64<rB>.Fragment,
 346                              v2i64_mul_ashlq4<rA>.Fragment),
 347                   (Av4i32
 348                       (MPYHv4i32 v2i64_mul_ashlq4<rA>.Fragment,
 349                                  v2i64_mul_bhi64<rB>.Fragment),
 350                     (Av4i32
 351                       (MPYUv4i32 v2i64_mul_ashlq4<rA>.Fragment,
 352                                  v2i64_mul_bhi64<rB>.Fragment),
 353                       (Av4i32
 354                         (MPYHv4i32 v2i64_mul_ashlq2<rA>.Fragment,
 355                                    v2i64_mul_bshlq2<rB>.Fragment),
 356                         (MPYUv4i32 v2i64_mul_ashlq2<rA>.Fragment,
 357                                    v2i64_mul_bshlq2<rB>.Fragment))))))>;
 358
 359 class v2i64_mul_a3_b3<dag rA, dag rB>:
 360     CodeFrag<(MPYUv4i32 v2i64_mul_alo64<rA>.Fragment,
 361                         v2i64_mul_blo64<rB>.Fragment)>;
 362
 363 class v2i64_mul_a2_b3<dag rA, dag rB>:
 364     CodeFrag<(SELBv4i32 (SHLQBYIv4i32
 365                           (MPYHHUv4i32 v2i64_mul_alo64<rA>.Fragment,
 366                                        v2i64_mul_bshlq2<rB>.Fragment), 0x2),
 367                         (ILv4i32 0),
 368                         (FSMBIv4i32 0xc3c3))>;
 369
 370 class v2i64_mul_a3_b2<dag rA, dag rB>:
 371     CodeFrag<(SELBv4i32 (SHLQBYIv4i32
 372                           (MPYHHUv4i32 v2i64_mul_blo64<rB>.Fragment,
 373                                        v2i64_mul_ashlq2<rA>.Fragment), 0x2),
 374                         (ILv4i32 0),
 375                         (FSMBIv4i32 0xc3c3))>;
 376
 377 class v2i64_lowsum<dag rA, dag rB, dag rCGmask>:
 378     v2i64_add<v2i64_add<v2i64_mul_a3_b3<rA, rB>.Fragment,
 379                         v2i64_mul_a2_b3<rA, rB>.Fragment, rCGmask>.Fragment,
 380               v2i64_mul_a3_b2<rA, rB>.Fragment, rCGmask>;
 381
 382 class v2i64_mul<dag rA, dag rB, dag rCGmask>:
 383     v2i64_add<v2i64_lowsum<rA, rB, rCGmask>.Fragment,
 384               (SELBv4i32 v2i64_highprod<rA, rB>.Fragment,
 385                          (ILv4i32 0),
 386                          (FSMBIv4i32 0x0f0f)),
 387               rCGmask>;
 388
 389 def : Pat<(SPUmul64 R64C:$rA, R64C:$rB, (v4i32 VECREG:$rCGmask)),
 390           (COPY_TO_REGCLASS v2i64_mul<(COPY_TO_REGCLASS R64C:$rA, VECREG),
 391                                  (COPY_TO_REGCLASS R64C:$rB, VECREG),
 392                                  (v4i32 VECREG:$rCGmask)>.Fragment, R64C)>;
 393
 394 def : Pat<(SPUmul64 (v2i64 VECREG:$rA), (v2i64 VECREG:$rB),
 395                     (v4i32 VECREG:$rCGmask)),
 396           v2i64_mul<(v2i64 VECREG:$rA), (v2i64 VECREG:$rB),
 397                     (v4i32 VECREG:$rCGmask)>.Fragment>;
 398
 399 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 400 // f64 comparisons
 401 //-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~
 402
 403 // selb instruction definition for i64. Note that the selection mask is
 404 // a vector, produced by various forms of FSM:
 405 def SELBf64_cond:
 406    SELBInst<(outs R64FP:$rT), (ins R64FP:$rA, R64FP:$rB, R32C:$rC),
 407             [(set R64FP:$rT,
 408                   (select R32C:$rC, R64FP:$rB, R64FP:$rA))]>;