1//===-- X86CallingConv.td - Calling Conventions X86 32/64 --*- tablegen -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This describes the calling conventions for the X86-32 and X86-64 11// architectures. 12// 13//===----------------------------------------------------------------------===// 14 15/// CCIfSubtarget - Match if the current subtarget has a feature F. 16class CCIfSubtarget<string F, CCAction A> 17 : CCIf<!strconcat("static_cast<const X86Subtarget&>" 18 "(State.getMachineFunction().getSubtarget()).", F), 19 A>; 20 21//===----------------------------------------------------------------------===// 22// Return Value Calling Conventions 23//===----------------------------------------------------------------------===// 24 25// Return-value conventions common to all X86 CC's. 26def RetCC_X86Common : CallingConv<[ 27 // Scalar values are returned in AX first, then DX. For i8, the ABI 28 // requires the values to be in AL and AH, however this code uses AL and DL 29 // instead. This is because using AH for the second register conflicts with 30 // the way LLVM does multiple return values -- a return of {i16,i8} would end 31 // up in AX and AH, which overlap. Front-ends wishing to conform to the ABI 32 // for functions that return two i8 values are currently expected to pack the 33 // values into an i16 (which uses AX, and thus AL:AH). 34 // 35 // For code that doesn't care about the ABI, we allow returning more than two 36 // integer values in registers. 37 CCIfType<[i1], CCPromoteToType<i8>>, 38 CCIfType<[i8] , CCAssignToReg<[AL, DL, CL]>>, 39 CCIfType<[i16], CCAssignToReg<[AX, DX, CX]>>, 40 CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX]>>, 41 CCIfType<[i64], CCAssignToReg<[RAX, RDX, RCX]>>, 42 43 // Boolean vectors of AVX-512 are returned in SIMD registers. 44 // The call from AVX to AVX-512 function should work, 45 // since the boolean types in AVX/AVX2 are promoted by default. 46 CCIfType<[v2i1], CCPromoteToType<v2i64>>, 47 CCIfType<[v4i1], CCPromoteToType<v4i32>>, 48 CCIfType<[v8i1], CCPromoteToType<v8i16>>, 49 CCIfType<[v16i1], CCPromoteToType<v16i8>>, 50 CCIfType<[v32i1], CCPromoteToType<v32i8>>, 51 CCIfType<[v64i1], CCPromoteToType<v64i8>>, 52 53 // Vector types are returned in XMM0 and XMM1, when they fit. XMM2 and XMM3 54 // can only be used by ABI non-compliant code. If the target doesn't have XMM 55 // registers, it won't have vector types. 56 CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 57 CCAssignToReg<[XMM0,XMM1,XMM2,XMM3]>>, 58 59 // 256-bit vectors are returned in YMM0 and XMM1, when they fit. YMM2 and YMM3 60 // can only be used by ABI non-compliant code. This vector type is only 61 // supported while using the AVX target feature. 62 CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 63 CCAssignToReg<[YMM0,YMM1,YMM2,YMM3]>>, 64 65 // 512-bit vectors are returned in ZMM0 and ZMM1, when they fit. ZMM2 and ZMM3 66 // can only be used by ABI non-compliant code. This vector type is only 67 // supported while using the AVX-512 target feature. 68 CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 69 CCAssignToReg<[ZMM0,ZMM1,ZMM2,ZMM3]>>, 70 71 // MMX vector types are always returned in MM0. If the target doesn't have 72 // MM0, it doesn't support these vector types. 73 CCIfType<[x86mmx], CCAssignToReg<[MM0]>>, 74 75 // Long double types are always returned in FP0 (even with SSE). 76 CCIfType<[f80], CCAssignToReg<[FP0, FP1]>> 77]>; 78 79// X86-32 C return-value convention. 80def RetCC_X86_32_C : CallingConv<[ 81 // The X86-32 calling convention returns FP values in FP0, unless marked 82 // with "inreg" (used here to distinguish one kind of reg from another, 83 // weirdly; this is really the sse-regparm calling convention) in which 84 // case they use XMM0, otherwise it is the same as the common X86 calling 85 // conv. 86 CCIfInReg<CCIfSubtarget<"hasSSE2()", 87 CCIfType<[f32, f64], CCAssignToReg<[XMM0,XMM1,XMM2]>>>>, 88 CCIfType<[f32,f64], CCAssignToReg<[FP0, FP1]>>, 89 CCDelegateTo<RetCC_X86Common> 90]>; 91 92// X86-32 FastCC return-value convention. 93def RetCC_X86_32_Fast : CallingConv<[ 94 // The X86-32 fastcc returns 1, 2, or 3 FP values in XMM0-2 if the target has 95 // SSE2. 96 // This can happen when a float, 2 x float, or 3 x float vector is split by 97 // target lowering, and is returned in 1-3 sse regs. 98 CCIfType<[f32], CCIfSubtarget<"hasSSE2()", CCAssignToReg<[XMM0,XMM1,XMM2]>>>, 99 CCIfType<[f64], CCIfSubtarget<"hasSSE2()", CCAssignToReg<[XMM0,XMM1,XMM2]>>>, 100 101 // For integers, ECX can be used as an extra return register 102 CCIfType<[i8], CCAssignToReg<[AL, DL, CL]>>, 103 CCIfType<[i16], CCAssignToReg<[AX, DX, CX]>>, 104 CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX]>>, 105 106 // Otherwise, it is the same as the common X86 calling convention. 107 CCDelegateTo<RetCC_X86Common> 108]>; 109 110// Intel_OCL_BI return-value convention. 111def RetCC_Intel_OCL_BI : CallingConv<[ 112 // Vector types are returned in XMM0,XMM1,XMMM2 and XMM3. 113 CCIfType<[f32, f64, v4i32, v2i64, v4f32, v2f64], 114 CCAssignToReg<[XMM0,XMM1,XMM2,XMM3]>>, 115 116 // 256-bit FP vectors 117 // No more than 4 registers 118 CCIfType<[v8f32, v4f64, v8i32, v4i64], 119 CCAssignToReg<[YMM0,YMM1,YMM2,YMM3]>>, 120 121 // 512-bit FP vectors 122 CCIfType<[v16f32, v8f64, v16i32, v8i64], 123 CCAssignToReg<[ZMM0,ZMM1,ZMM2,ZMM3]>>, 124 125 // i32, i64 in the standard way 126 CCDelegateTo<RetCC_X86Common> 127]>; 128 129// X86-32 HiPE return-value convention. 130def RetCC_X86_32_HiPE : CallingConv<[ 131 // Promote all types to i32 132 CCIfType<[i8, i16], CCPromoteToType<i32>>, 133 134 // Return: HP, P, VAL1, VAL2 135 CCIfType<[i32], CCAssignToReg<[ESI, EBP, EAX, EDX]>> 136]>; 137 138// X86-32 HiPE return-value convention. 139def RetCC_X86_32_VectorCall : CallingConv<[ 140 // Vector types are returned in XMM0,XMM1,XMMM2 and XMM3. 141 CCIfType<[f32, f64, v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 142 CCAssignToReg<[XMM0,XMM1,XMM2,XMM3]>>, 143 144 // 256-bit FP vectors 145 CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 146 CCAssignToReg<[YMM0,YMM1,YMM2,YMM3]>>, 147 148 // 512-bit FP vectors 149 CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 150 CCAssignToReg<[ZMM0,ZMM1,ZMM2,ZMM3]>>, 151 152 // Return integers in the standard way. 153 CCDelegateTo<RetCC_X86Common> 154]>; 155 156// X86-64 C return-value convention. 157def RetCC_X86_64_C : CallingConv<[ 158 // The X86-64 calling convention always returns FP values in XMM0. 159 CCIfType<[f32], CCAssignToReg<[XMM0, XMM1]>>, 160 CCIfType<[f64], CCAssignToReg<[XMM0, XMM1]>>, 161 CCIfType<[f128], CCAssignToReg<[XMM0, XMM1]>>, 162 163 // MMX vector types are always returned in XMM0. 164 CCIfType<[x86mmx], CCAssignToReg<[XMM0, XMM1]>>, 165 166 CCIfSwiftError<CCIfType<[i64], CCAssignToReg<[R12]>>>, 167 168 CCDelegateTo<RetCC_X86Common> 169]>; 170 171// X86-Win64 C return-value convention. 172def RetCC_X86_Win64_C : CallingConv<[ 173 // The X86-Win64 calling convention always returns __m64 values in RAX. 174 CCIfType<[x86mmx], CCBitConvertToType<i64>>, 175 176 // Otherwise, everything is the same as 'normal' X86-64 C CC. 177 CCDelegateTo<RetCC_X86_64_C> 178]>; 179 180// X86-64 HiPE return-value convention. 181def RetCC_X86_64_HiPE : CallingConv<[ 182 // Promote all types to i64 183 CCIfType<[i8, i16, i32], CCPromoteToType<i64>>, 184 185 // Return: HP, P, VAL1, VAL2 186 CCIfType<[i64], CCAssignToReg<[R15, RBP, RAX, RDX]>> 187]>; 188 189// X86-64 WebKit_JS return-value convention. 190def RetCC_X86_64_WebKit_JS : CallingConv<[ 191 // Promote all types to i64 192 CCIfType<[i8, i16, i32], CCPromoteToType<i64>>, 193 194 // Return: RAX 195 CCIfType<[i64], CCAssignToReg<[RAX]>> 196]>; 197 198def RetCC_X86_64_Swift : CallingConv<[ 199 // For integers, ECX, R8D can be used as extra return registers. 200 CCIfType<[i1], CCPromoteToType<i8>>, 201 CCIfType<[i8] , CCAssignToReg<[AL, DL, CL, R8B]>>, 202 CCIfType<[i16], CCAssignToReg<[AX, DX, CX, R8W]>>, 203 CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX, R8D]>>, 204 CCIfType<[i64], CCAssignToReg<[RAX, RDX, RCX, R8]>>, 205 206 // XMM0, XMM1, XMM2 and XMM3 can be used to return FP values. 207 CCIfType<[f32], CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>, 208 CCIfType<[f64], CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>, 209 CCIfType<[f128], CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>, 210 211 // MMX vector types are returned in XMM0, XMM1, XMM2 and XMM3. 212 CCIfType<[x86mmx], CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>, 213 CCDelegateTo<RetCC_X86Common> 214]>; 215 216// X86-64 AnyReg return-value convention. No explicit register is specified for 217// the return-value. The register allocator is allowed and expected to choose 218// any free register. 219// 220// This calling convention is currently only supported by the stackmap and 221// patchpoint intrinsics. All other uses will result in an assert on Debug 222// builds. On Release builds we fallback to the X86 C calling convention. 223def RetCC_X86_64_AnyReg : CallingConv<[ 224 CCCustom<"CC_X86_AnyReg_Error"> 225]>; 226 227// X86-64 HHVM return-value convention. 228def RetCC_X86_64_HHVM: CallingConv<[ 229 // Promote all types to i64 230 CCIfType<[i8, i16, i32], CCPromoteToType<i64>>, 231 232 // Return: could return in any GP register save RSP and R12. 233 CCIfType<[i64], CCAssignToReg<[RBX, RBP, RDI, RSI, RDX, RCX, R8, R9, 234 RAX, R10, R11, R13, R14, R15]>> 235]>; 236 237// This is the root return-value convention for the X86-32 backend. 238def RetCC_X86_32 : CallingConv<[ 239 // If FastCC, use RetCC_X86_32_Fast. 240 CCIfCC<"CallingConv::Fast", CCDelegateTo<RetCC_X86_32_Fast>>, 241 // If HiPE, use RetCC_X86_32_HiPE. 242 CCIfCC<"CallingConv::HiPE", CCDelegateTo<RetCC_X86_32_HiPE>>, 243 CCIfCC<"CallingConv::X86_VectorCall", CCDelegateTo<RetCC_X86_32_VectorCall>>, 244 245 // Otherwise, use RetCC_X86_32_C. 246 CCDelegateTo<RetCC_X86_32_C> 247]>; 248 249// This is the root return-value convention for the X86-64 backend. 250def RetCC_X86_64 : CallingConv<[ 251 // HiPE uses RetCC_X86_64_HiPE 252 CCIfCC<"CallingConv::HiPE", CCDelegateTo<RetCC_X86_64_HiPE>>, 253 254 // Handle JavaScript calls. 255 CCIfCC<"CallingConv::WebKit_JS", CCDelegateTo<RetCC_X86_64_WebKit_JS>>, 256 CCIfCC<"CallingConv::AnyReg", CCDelegateTo<RetCC_X86_64_AnyReg>>, 257 258 // Handle Swift calls. 259 CCIfCC<"CallingConv::Swift", CCDelegateTo<RetCC_X86_64_Swift>>, 260 261 // Handle explicit CC selection 262 CCIfCC<"CallingConv::X86_64_Win64", CCDelegateTo<RetCC_X86_Win64_C>>, 263 CCIfCC<"CallingConv::X86_64_SysV", CCDelegateTo<RetCC_X86_64_C>>, 264 265 // Handle HHVM calls. 266 CCIfCC<"CallingConv::HHVM", CCDelegateTo<RetCC_X86_64_HHVM>>, 267 268 // Mingw64 and native Win64 use Win64 CC 269 CCIfSubtarget<"isTargetWin64()", CCDelegateTo<RetCC_X86_Win64_C>>, 270 271 // Otherwise, drop to normal X86-64 CC 272 CCDelegateTo<RetCC_X86_64_C> 273]>; 274 275// This is the return-value convention used for the entire X86 backend. 276def RetCC_X86 : CallingConv<[ 277 278 // Check if this is the Intel OpenCL built-ins calling convention 279 CCIfCC<"CallingConv::Intel_OCL_BI", CCDelegateTo<RetCC_Intel_OCL_BI>>, 280 281 CCIfSubtarget<"is64Bit()", CCDelegateTo<RetCC_X86_64>>, 282 CCDelegateTo<RetCC_X86_32> 283]>; 284 285//===----------------------------------------------------------------------===// 286// X86-64 Argument Calling Conventions 287//===----------------------------------------------------------------------===// 288 289def CC_X86_64_C : CallingConv<[ 290 // Handles byval parameters. 291 CCIfByVal<CCPassByVal<8, 8>>, 292 293 // Promote i1/i8/i16 arguments to i32. 294 CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, 295 296 // The 'nest' parameter, if any, is passed in R10. 297 CCIfNest<CCIfSubtarget<"isTarget64BitILP32()", CCAssignToReg<[R10D]>>>, 298 CCIfNest<CCAssignToReg<[R10]>>, 299 300 // Pass SwiftSelf in a callee saved register. 301 CCIfSwiftSelf<CCIfType<[i64], CCAssignToReg<[R13]>>>, 302 303 // A SwiftError is passed in R12. 304 CCIfSwiftError<CCIfType<[i64], CCAssignToReg<[R12]>>>, 305 306 // For Swift Calling Convention, pass sret in %RAX. 307 CCIfCC<"CallingConv::Swift", 308 CCIfSRet<CCIfType<[i64], CCAssignToReg<[RAX]>>>>, 309 310 // The first 6 integer arguments are passed in integer registers. 311 CCIfType<[i32], CCAssignToReg<[EDI, ESI, EDX, ECX, R8D, R9D]>>, 312 CCIfType<[i64], CCAssignToReg<[RDI, RSI, RDX, RCX, R8 , R9 ]>>, 313 314 // The first 8 MMX vector arguments are passed in XMM registers on Darwin. 315 CCIfType<[x86mmx], 316 CCIfSubtarget<"isTargetDarwin()", 317 CCIfSubtarget<"hasSSE2()", 318 CCPromoteToType<v2i64>>>>, 319 320 // Boolean vectors of AVX-512 are passed in SIMD registers. 321 // The call from AVX to AVX-512 function should work, 322 // since the boolean types in AVX/AVX2 are promoted by default. 323 CCIfType<[v2i1], CCPromoteToType<v2i64>>, 324 CCIfType<[v4i1], CCPromoteToType<v4i32>>, 325 CCIfType<[v8i1], CCPromoteToType<v8i16>>, 326 CCIfType<[v16i1], CCPromoteToType<v16i8>>, 327 CCIfType<[v32i1], CCPromoteToType<v32i8>>, 328 CCIfType<[v64i1], CCPromoteToType<v64i8>>, 329 330 // The first 8 FP/Vector arguments are passed in XMM registers. 331 CCIfType<[f32, f64, f128, v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 332 CCIfSubtarget<"hasSSE1()", 333 CCAssignToReg<[XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7]>>>, 334 335 // The first 8 256-bit vector arguments are passed in YMM registers, unless 336 // this is a vararg function. 337 // FIXME: This isn't precisely correct; the x86-64 ABI document says that 338 // fixed arguments to vararg functions are supposed to be passed in 339 // registers. Actually modeling that would be a lot of work, though. 340 CCIfNotVarArg<CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 341 CCIfSubtarget<"hasFp256()", 342 CCAssignToReg<[YMM0, YMM1, YMM2, YMM3, 343 YMM4, YMM5, YMM6, YMM7]>>>>, 344 345 // The first 8 512-bit vector arguments are passed in ZMM registers. 346 CCIfNotVarArg<CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 347 CCIfSubtarget<"hasAVX512()", 348 CCAssignToReg<[ZMM0, ZMM1, ZMM2, ZMM3, ZMM4, ZMM5, ZMM6, ZMM7]>>>>, 349 350 // Integer/FP values get stored in stack slots that are 8 bytes in size and 351 // 8-byte aligned if there are no more registers to hold them. 352 CCIfType<[i32, i64, f32, f64], CCAssignToStack<8, 8>>, 353 354 // Long doubles get stack slots whose size and alignment depends on the 355 // subtarget. 356 CCIfType<[f80, f128], CCAssignToStack<0, 0>>, 357 358 // Vectors get 16-byte stack slots that are 16-byte aligned. 359 CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>, 360 361 // 256-bit vectors get 32-byte stack slots that are 32-byte aligned. 362 CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 363 CCAssignToStack<32, 32>>, 364 365 // 512-bit vectors get 64-byte stack slots that are 64-byte aligned. 366 CCIfType<[v16i32, v8i64, v16f32, v8f64], 367 CCAssignToStack<64, 64>> 368]>; 369 370// Calling convention for X86-64 HHVM. 371def CC_X86_64_HHVM : CallingConv<[ 372 // Use all/any GP registers for args, except RSP. 373 CCIfType<[i64], CCAssignToReg<[RBX, R12, RBP, R15, 374 RDI, RSI, RDX, RCX, R8, R9, 375 RAX, R10, R11, R13, R14]>> 376]>; 377 378// Calling convention for helper functions in HHVM. 379def CC_X86_64_HHVM_C : CallingConv<[ 380 // Pass the first argument in RBP. 381 CCIfType<[i64], CCAssignToReg<[RBP]>>, 382 383 // Otherwise it's the same as the regular C calling convention. 384 CCDelegateTo<CC_X86_64_C> 385]>; 386 387// Calling convention used on Win64 388def CC_X86_Win64_C : CallingConv<[ 389 // FIXME: Handle byval stuff. 390 // FIXME: Handle varargs. 391 392 // Promote i1/i8/i16 arguments to i32. 393 CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, 394 395 // The 'nest' parameter, if any, is passed in R10. 396 CCIfNest<CCAssignToReg<[R10]>>, 397 398 // 128 bit vectors are passed by pointer 399 CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCPassIndirect<i64>>, 400 401 402 // 256 bit vectors are passed by pointer 403 CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], CCPassIndirect<i64>>, 404 405 // 512 bit vectors are passed by pointer 406 CCIfType<[v16i32, v16f32, v8f64, v8i64], CCPassIndirect<i64>>, 407 408 // The first 4 MMX vector arguments are passed in GPRs. 409 CCIfType<[x86mmx], CCBitConvertToType<i64>>, 410 411 // The first 4 integer arguments are passed in integer registers. 412 CCIfType<[i32], CCAssignToRegWithShadow<[ECX , EDX , R8D , R9D ], 413 [XMM0, XMM1, XMM2, XMM3]>>, 414 415 // Do not pass the sret argument in RCX, the Win64 thiscall calling 416 // convention requires "this" to be passed in RCX. 417 CCIfCC<"CallingConv::X86_ThisCall", 418 CCIfSRet<CCIfType<[i64], CCAssignToRegWithShadow<[RDX , R8 , R9 ], 419 [XMM1, XMM2, XMM3]>>>>, 420 421 CCIfType<[i64], CCAssignToRegWithShadow<[RCX , RDX , R8 , R9 ], 422 [XMM0, XMM1, XMM2, XMM3]>>, 423 424 // The first 4 FP/Vector arguments are passed in XMM registers. 425 CCIfType<[f32, f64, v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 426 CCAssignToRegWithShadow<[XMM0, XMM1, XMM2, XMM3], 427 [RCX , RDX , R8 , R9 ]>>, 428 429 // Integer/FP values get stored in stack slots that are 8 bytes in size and 430 // 8-byte aligned if there are no more registers to hold them. 431 CCIfType<[i32, i64, f32, f64], CCAssignToStack<8, 8>>, 432 433 // Long doubles get stack slots whose size and alignment depends on the 434 // subtarget. 435 CCIfType<[f80], CCAssignToStack<0, 0>> 436]>; 437 438def CC_X86_Win64_VectorCall : CallingConv<[ 439 // The first 6 floating point and vector types of 128 bits or less use 440 // XMM0-XMM5. 441 CCIfType<[f32, f64, v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 442 CCAssignToReg<[XMM0, XMM1, XMM2, XMM3, XMM4, XMM5]>>, 443 444 // 256-bit vectors use YMM registers. 445 CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 446 CCAssignToReg<[YMM0, YMM1, YMM2, YMM3, YMM4, YMM5]>>, 447 448 // 512-bit vectors use ZMM registers. 449 CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 450 CCAssignToReg<[ZMM0, ZMM1, ZMM2, ZMM3, ZMM4, ZMM5]>>, 451 452 // Delegate to fastcall to handle integer types. 453 CCDelegateTo<CC_X86_Win64_C> 454]>; 455 456 457def CC_X86_64_GHC : CallingConv<[ 458 // Promote i8/i16/i32 arguments to i64. 459 CCIfType<[i8, i16, i32], CCPromoteToType<i64>>, 460 461 // Pass in STG registers: Base, Sp, Hp, R1, R2, R3, R4, R5, R6, SpLim 462 CCIfType<[i64], 463 CCAssignToReg<[R13, RBP, R12, RBX, R14, RSI, RDI, R8, R9, R15]>>, 464 465 // Pass in STG registers: F1, F2, F3, F4, D1, D2 466 CCIfType<[f32, f64, v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 467 CCIfSubtarget<"hasSSE1()", 468 CCAssignToReg<[XMM1, XMM2, XMM3, XMM4, XMM5, XMM6]>>> 469]>; 470 471def CC_X86_64_HiPE : CallingConv<[ 472 // Promote i8/i16/i32 arguments to i64. 473 CCIfType<[i8, i16, i32], CCPromoteToType<i64>>, 474 475 // Pass in VM's registers: HP, P, ARG0, ARG1, ARG2, ARG3 476 CCIfType<[i64], CCAssignToReg<[R15, RBP, RSI, RDX, RCX, R8]>>, 477 478 // Integer/FP values get stored in stack slots that are 8 bytes in size and 479 // 8-byte aligned if there are no more registers to hold them. 480 CCIfType<[i32, i64, f32, f64], CCAssignToStack<8, 8>> 481]>; 482 483def CC_X86_64_WebKit_JS : CallingConv<[ 484 // Promote i8/i16 arguments to i32. 485 CCIfType<[i8, i16], CCPromoteToType<i32>>, 486 487 // Only the first integer argument is passed in register. 488 CCIfType<[i32], CCAssignToReg<[EAX]>>, 489 CCIfType<[i64], CCAssignToReg<[RAX]>>, 490 491 // The remaining integer arguments are passed on the stack. 32bit integer and 492 // floating-point arguments are aligned to 4 byte and stored in 4 byte slots. 493 // 64bit integer and floating-point arguments are aligned to 8 byte and stored 494 // in 8 byte stack slots. 495 CCIfType<[i32, f32], CCAssignToStack<4, 4>>, 496 CCIfType<[i64, f64], CCAssignToStack<8, 8>> 497]>; 498 499// No explicit register is specified for the AnyReg calling convention. The 500// register allocator may assign the arguments to any free register. 501// 502// This calling convention is currently only supported by the stackmap and 503// patchpoint intrinsics. All other uses will result in an assert on Debug 504// builds. On Release builds we fallback to the X86 C calling convention. 505def CC_X86_64_AnyReg : CallingConv<[ 506 CCCustom<"CC_X86_AnyReg_Error"> 507]>; 508 509//===----------------------------------------------------------------------===// 510// X86 C Calling Convention 511//===----------------------------------------------------------------------===// 512 513/// CC_X86_32_Vector_Common - In all X86-32 calling conventions, extra vector 514/// values are spilled on the stack. 515def CC_X86_32_Vector_Common : CallingConv<[ 516 // Other SSE vectors get 16-byte stack slots that are 16-byte aligned. 517 CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>, 518 519 // 256-bit AVX vectors get 32-byte stack slots that are 32-byte aligned. 520 CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 521 CCAssignToStack<32, 32>>, 522 523 // 512-bit AVX 512-bit vectors get 64-byte stack slots that are 64-byte aligned. 524 CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 525 CCAssignToStack<64, 64>> 526]>; 527 528// CC_X86_32_Vector_Standard - The first 3 vector arguments are passed in 529// vector registers 530def CC_X86_32_Vector_Standard : CallingConv<[ 531 // SSE vector arguments are passed in XMM registers. 532 CCIfNotVarArg<CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 533 CCAssignToReg<[XMM0, XMM1, XMM2]>>>, 534 535 // AVX 256-bit vector arguments are passed in YMM registers. 536 CCIfNotVarArg<CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 537 CCIfSubtarget<"hasFp256()", 538 CCAssignToReg<[YMM0, YMM1, YMM2]>>>>, 539 540 // AVX 512-bit vector arguments are passed in ZMM registers. 541 CCIfNotVarArg<CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 542 CCAssignToReg<[ZMM0, ZMM1, ZMM2]>>>, 543 544 CCDelegateTo<CC_X86_32_Vector_Common> 545]>; 546 547// CC_X86_32_Vector_Darwin - The first 4 vector arguments are passed in 548// vector registers. 549def CC_X86_32_Vector_Darwin : CallingConv<[ 550 // SSE vector arguments are passed in XMM registers. 551 CCIfNotVarArg<CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 552 CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>>, 553 554 // AVX 256-bit vector arguments are passed in YMM registers. 555 CCIfNotVarArg<CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 556 CCIfSubtarget<"hasFp256()", 557 CCAssignToReg<[YMM0, YMM1, YMM2, YMM3]>>>>, 558 559 // AVX 512-bit vector arguments are passed in ZMM registers. 560 CCIfNotVarArg<CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 561 CCAssignToReg<[ZMM0, ZMM1, ZMM2, ZMM3]>>>, 562 563 CCDelegateTo<CC_X86_32_Vector_Common> 564]>; 565 566/// CC_X86_32_Common - In all X86-32 calling conventions, extra integers and FP 567/// values are spilled on the stack. 568def CC_X86_32_Common : CallingConv<[ 569 // Handles byval parameters. 570 CCIfByVal<CCPassByVal<4, 4>>, 571 572 // The first 3 float or double arguments, if marked 'inreg' and if the call 573 // is not a vararg call and if SSE2 is available, are passed in SSE registers. 574 CCIfNotVarArg<CCIfInReg<CCIfType<[f32,f64], 575 CCIfSubtarget<"hasSSE2()", 576 CCAssignToReg<[XMM0,XMM1,XMM2]>>>>>, 577 578 // The first 3 __m64 vector arguments are passed in mmx registers if the 579 // call is not a vararg call. 580 CCIfNotVarArg<CCIfType<[x86mmx], 581 CCAssignToReg<[MM0, MM1, MM2]>>>, 582 583 // Integer/Float values get stored in stack slots that are 4 bytes in 584 // size and 4-byte aligned. 585 CCIfType<[i32, f32], CCAssignToStack<4, 4>>, 586 587 // Doubles get 8-byte slots that are 4-byte aligned. 588 CCIfType<[f64], CCAssignToStack<8, 4>>, 589 590 // Long doubles get slots whose size depends on the subtarget. 591 CCIfType<[f80], CCAssignToStack<0, 4>>, 592 593 // Boolean vectors of AVX-512 are passed in SIMD registers. 594 // The call from AVX to AVX-512 function should work, 595 // since the boolean types in AVX/AVX2 are promoted by default. 596 CCIfType<[v2i1], CCPromoteToType<v2i64>>, 597 CCIfType<[v4i1], CCPromoteToType<v4i32>>, 598 CCIfType<[v8i1], CCPromoteToType<v8i16>>, 599 CCIfType<[v16i1], CCPromoteToType<v16i8>>, 600 CCIfType<[v32i1], CCPromoteToType<v32i8>>, 601 CCIfType<[v64i1], CCPromoteToType<v64i8>>, 602 603 // __m64 vectors get 8-byte stack slots that are 4-byte aligned. They are 604 // passed in the parameter area. 605 CCIfType<[x86mmx], CCAssignToStack<8, 4>>, 606 607 // Darwin passes vectors in a form that differs from the i386 psABI 608 CCIfSubtarget<"isTargetDarwin()", CCDelegateTo<CC_X86_32_Vector_Darwin>>, 609 610 // Otherwise, drop to 'normal' X86-32 CC 611 CCDelegateTo<CC_X86_32_Vector_Standard> 612]>; 613 614def CC_X86_32_C : CallingConv<[ 615 // Promote i1/i8/i16 arguments to i32. 616 CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, 617 618 // The 'nest' parameter, if any, is passed in ECX. 619 CCIfNest<CCAssignToReg<[ECX]>>, 620 621 // The first 3 integer arguments, if marked 'inreg' and if the call is not 622 // a vararg call, are passed in integer registers. 623 CCIfNotVarArg<CCIfInReg<CCIfType<[i32], CCAssignToReg<[EAX, EDX, ECX]>>>>, 624 625 // Otherwise, same as everything else. 626 CCDelegateTo<CC_X86_32_Common> 627]>; 628 629def CC_X86_32_MCU : CallingConv<[ 630 // Handles byval parameters. Note that, like FastCC, we can't rely on 631 // the delegation to CC_X86_32_Common because that happens after code that 632 // puts arguments in registers. 633 CCIfByVal<CCPassByVal<4, 4>>, 634 635 // Promote i1/i8/i16 arguments to i32. 636 CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, 637 638 // If the call is not a vararg call, some arguments may be passed 639 // in integer registers. 640 CCIfNotVarArg<CCIfType<[i32], CCCustom<"CC_X86_32_MCUInReg">>>, 641 642 // Otherwise, same as everything else. 643 CCDelegateTo<CC_X86_32_Common> 644]>; 645 646def CC_X86_32_FastCall : CallingConv<[ 647 // Promote i1/i8/i16 arguments to i32. 648 CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, 649 650 // The 'nest' parameter, if any, is passed in EAX. 651 CCIfNest<CCAssignToReg<[EAX]>>, 652 653 // The first 2 integer arguments are passed in ECX/EDX 654 CCIfInReg<CCIfType<[i32], CCAssignToReg<[ECX, EDX]>>>, 655 656 // Otherwise, same as everything else. 657 CCDelegateTo<CC_X86_32_Common> 658]>; 659 660def CC_X86_32_VectorCall : CallingConv<[ 661 // The first 6 floating point and vector types of 128 bits or less use 662 // XMM0-XMM5. 663 CCIfType<[f32, f64, v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], 664 CCAssignToReg<[XMM0, XMM1, XMM2, XMM3, XMM4, XMM5]>>, 665 666 // 256-bit vectors use YMM registers. 667 CCIfType<[v32i8, v16i16, v8i32, v4i64, v8f32, v4f64], 668 CCAssignToReg<[YMM0, YMM1, YMM2, YMM3, YMM4, YMM5]>>, 669 670 // 512-bit vectors use ZMM registers. 671 CCIfType<[v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 672 CCAssignToReg<[ZMM0, ZMM1, ZMM2, ZMM3, ZMM4, ZMM5]>>, 673 674 // Otherwise, pass it indirectly. 675 CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64, 676 v32i8, v16i16, v8i32, v4i64, v8f32, v4f64, 677 v64i8, v32i16, v16i32, v8i64, v16f32, v8f64], 678 CCCustom<"CC_X86_32_VectorCallIndirect">>, 679 680 // Delegate to fastcall to handle integer types. 681 CCDelegateTo<CC_X86_32_FastCall> 682]>; 683 684def CC_X86_32_ThisCall_Common : CallingConv<[ 685 // The first integer argument is passed in ECX 686 CCIfType<[i32], CCAssignToReg<[ECX]>>, 687 688 // Otherwise, same as everything else. 689 CCDelegateTo<CC_X86_32_Common> 690]>; 691 692def CC_X86_32_ThisCall_Mingw : CallingConv<[ 693 // Promote i1/i8/i16 arguments to i32. 694 CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, 695 696 CCDelegateTo<CC_X86_32_ThisCall_Common> 697]>; 698 699def CC_X86_32_ThisCall_Win : CallingConv<[ 700 // Promote i1/i8/i16 arguments to i32. 701 CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, 702 703 // Pass sret arguments indirectly through stack. 704 CCIfSRet<CCAssignToStack<4, 4>>, 705 706 CCDelegateTo<CC_X86_32_ThisCall_Common> 707]>; 708 709def CC_X86_32_ThisCall : CallingConv<[ 710 CCIfSubtarget<"isTargetCygMing()", CCDelegateTo<CC_X86_32_ThisCall_Mingw>>, 711 CCDelegateTo<CC_X86_32_ThisCall_Win> 712]>; 713 714def CC_X86_32_FastCC : CallingConv<[ 715 // Handles byval parameters. Note that we can't rely on the delegation 716 // to CC_X86_32_Common for this because that happens after code that 717 // puts arguments in registers. 718 CCIfByVal<CCPassByVal<4, 4>>, 719 720 // Promote i1/i8/i16 arguments to i32. 721 CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, 722 723 // The 'nest' parameter, if any, is passed in EAX. 724 CCIfNest<CCAssignToReg<[EAX]>>, 725 726 // The first 2 integer arguments are passed in ECX/EDX 727 CCIfType<[i32], CCAssignToReg<[ECX, EDX]>>, 728 729 // The first 3 float or double arguments, if the call is not a vararg 730 // call and if SSE2 is available, are passed in SSE registers. 731 CCIfNotVarArg<CCIfType<[f32,f64], 732 CCIfSubtarget<"hasSSE2()", 733 CCAssignToReg<[XMM0,XMM1,XMM2]>>>>, 734 735 // Doubles get 8-byte slots that are 8-byte aligned. 736 CCIfType<[f64], CCAssignToStack<8, 8>>, 737 738 // Otherwise, same as everything else. 739 CCDelegateTo<CC_X86_32_Common> 740]>; 741 742def CC_X86_32_GHC : CallingConv<[ 743 // Promote i8/i16 arguments to i32. 744 CCIfType<[i8, i16], CCPromoteToType<i32>>, 745 746 // Pass in STG registers: Base, Sp, Hp, R1 747 CCIfType<[i32], CCAssignToReg<[EBX, EBP, EDI, ESI]>> 748]>; 749 750def CC_X86_32_HiPE : CallingConv<[ 751 // Promote i8/i16 arguments to i32. 752 CCIfType<[i8, i16], CCPromoteToType<i32>>, 753 754 // Pass in VM's registers: HP, P, ARG0, ARG1, ARG2 755 CCIfType<[i32], CCAssignToReg<[ESI, EBP, EAX, EDX, ECX]>>, 756 757 // Integer/Float values get stored in stack slots that are 4 bytes in 758 // size and 4-byte aligned. 759 CCIfType<[i32, f32], CCAssignToStack<4, 4>> 760]>; 761 762// X86-64 Intel OpenCL built-ins calling convention. 763def CC_Intel_OCL_BI : CallingConv<[ 764 765 CCIfType<[i32], CCIfSubtarget<"isTargetWin64()", CCAssignToReg<[ECX, EDX, R8D, R9D]>>>, 766 CCIfType<[i64], CCIfSubtarget<"isTargetWin64()", CCAssignToReg<[RCX, RDX, R8, R9 ]>>>, 767 768 CCIfType<[i32], CCIfSubtarget<"is64Bit()", CCAssignToReg<[EDI, ESI, EDX, ECX]>>>, 769 CCIfType<[i64], CCIfSubtarget<"is64Bit()", CCAssignToReg<[RDI, RSI, RDX, RCX]>>>, 770 771 CCIfType<[i32], CCAssignToStack<4, 4>>, 772 773 // The SSE vector arguments are passed in XMM registers. 774 CCIfType<[f32, f64, v4i32, v2i64, v4f32, v2f64], 775 CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>, 776 777 // The 256-bit vector arguments are passed in YMM registers. 778 CCIfType<[v8f32, v4f64, v8i32, v4i64], 779 CCAssignToReg<[YMM0, YMM1, YMM2, YMM3]>>, 780 781 // The 512-bit vector arguments are passed in ZMM registers. 782 CCIfType<[v16f32, v8f64, v16i32, v8i64], 783 CCAssignToReg<[ZMM0, ZMM1, ZMM2, ZMM3]>>, 784 785 // Pass masks in mask registers 786 CCIfType<[v16i1, v8i1], CCAssignToReg<[K1]>>, 787 788 CCIfSubtarget<"isTargetWin64()", CCDelegateTo<CC_X86_Win64_C>>, 789 CCIfSubtarget<"is64Bit()", CCDelegateTo<CC_X86_64_C>>, 790 CCDelegateTo<CC_X86_32_C> 791]>; 792 793def CC_X86_32_Intr : CallingConv<[ 794 CCAssignToStack<4, 4> 795]>; 796 797def CC_X86_64_Intr : CallingConv<[ 798 CCAssignToStack<8, 8> 799]>; 800 801//===----------------------------------------------------------------------===// 802// X86 Root Argument Calling Conventions 803//===----------------------------------------------------------------------===// 804 805// This is the root argument convention for the X86-32 backend. 806def CC_X86_32 : CallingConv<[ 807 // X86_INTR calling convention is valid in MCU target and should override the 808 // MCU calling convention. Thus, this should be checked before isTargetMCU(). 809 CCIfCC<"CallingConv::X86_INTR", CCDelegateTo<CC_X86_32_Intr>>, 810 CCIfSubtarget<"isTargetMCU()", CCDelegateTo<CC_X86_32_MCU>>, 811 CCIfCC<"CallingConv::X86_FastCall", CCDelegateTo<CC_X86_32_FastCall>>, 812 CCIfCC<"CallingConv::X86_VectorCall", CCDelegateTo<CC_X86_32_VectorCall>>, 813 CCIfCC<"CallingConv::X86_ThisCall", CCDelegateTo<CC_X86_32_ThisCall>>, 814 CCIfCC<"CallingConv::Fast", CCDelegateTo<CC_X86_32_FastCC>>, 815 CCIfCC<"CallingConv::GHC", CCDelegateTo<CC_X86_32_GHC>>, 816 CCIfCC<"CallingConv::HiPE", CCDelegateTo<CC_X86_32_HiPE>>, 817 818 // Otherwise, drop to normal X86-32 CC 819 CCDelegateTo<CC_X86_32_C> 820]>; 821 822// This is the root argument convention for the X86-64 backend. 823def CC_X86_64 : CallingConv<[ 824 CCIfCC<"CallingConv::GHC", CCDelegateTo<CC_X86_64_GHC>>, 825 CCIfCC<"CallingConv::HiPE", CCDelegateTo<CC_X86_64_HiPE>>, 826 CCIfCC<"CallingConv::WebKit_JS", CCDelegateTo<CC_X86_64_WebKit_JS>>, 827 CCIfCC<"CallingConv::AnyReg", CCDelegateTo<CC_X86_64_AnyReg>>, 828 CCIfCC<"CallingConv::X86_64_Win64", CCDelegateTo<CC_X86_Win64_C>>, 829 CCIfCC<"CallingConv::X86_64_SysV", CCDelegateTo<CC_X86_64_C>>, 830 CCIfCC<"CallingConv::X86_VectorCall", CCDelegateTo<CC_X86_Win64_VectorCall>>, 831 CCIfCC<"CallingConv::HHVM", CCDelegateTo<CC_X86_64_HHVM>>, 832 CCIfCC<"CallingConv::HHVM_C", CCDelegateTo<CC_X86_64_HHVM_C>>, 833 CCIfCC<"CallingConv::X86_INTR", CCDelegateTo<CC_X86_64_Intr>>, 834 835 // Mingw64 and native Win64 use Win64 CC 836 CCIfSubtarget<"isTargetWin64()", CCDelegateTo<CC_X86_Win64_C>>, 837 838 // Otherwise, drop to normal X86-64 CC 839 CCDelegateTo<CC_X86_64_C> 840]>; 841 842// This is the argument convention used for the entire X86 backend. 843def CC_X86 : CallingConv<[ 844 CCIfCC<"CallingConv::Intel_OCL_BI", CCDelegateTo<CC_Intel_OCL_BI>>, 845 CCIfSubtarget<"is64Bit()", CCDelegateTo<CC_X86_64>>, 846 CCDelegateTo<CC_X86_32> 847]>; 848 849//===----------------------------------------------------------------------===// 850// Callee-saved Registers. 851//===----------------------------------------------------------------------===// 852 853def CSR_NoRegs : CalleeSavedRegs<(add)>; 854 855def CSR_32 : CalleeSavedRegs<(add ESI, EDI, EBX, EBP)>; 856def CSR_64 : CalleeSavedRegs<(add RBX, R12, R13, R14, R15, RBP)>; 857 858def CSR_64_SwiftError : CalleeSavedRegs<(sub CSR_64, R12)>; 859 860def CSR_32EHRet : CalleeSavedRegs<(add EAX, EDX, CSR_32)>; 861def CSR_64EHRet : CalleeSavedRegs<(add RAX, RDX, CSR_64)>; 862 863def CSR_Win64 : CalleeSavedRegs<(add RBX, RBP, RDI, RSI, R12, R13, R14, R15, 864 (sequence "XMM%u", 6, 15))>; 865 866// The function used by Darwin to obtain the address of a thread-local variable 867// uses rdi to pass a single parameter and rax for the return value. All other 868// GPRs are preserved. 869def CSR_64_TLS_Darwin : CalleeSavedRegs<(add CSR_64, RCX, RDX, RSI, 870 R8, R9, R10, R11)>; 871 872// CSRs that are handled by prologue, epilogue. 873def CSR_64_CXX_TLS_Darwin_PE : CalleeSavedRegs<(add RBP)>; 874 875// CSRs that are handled explicitly via copies. 876def CSR_64_CXX_TLS_Darwin_ViaCopy : CalleeSavedRegs<(sub CSR_64_TLS_Darwin, RBP)>; 877 878// All GPRs - except r11 879def CSR_64_RT_MostRegs : CalleeSavedRegs<(add CSR_64, RAX, RCX, RDX, RSI, RDI, 880 R8, R9, R10, RSP)>; 881 882// All registers - except r11 883def CSR_64_RT_AllRegs : CalleeSavedRegs<(add CSR_64_RT_MostRegs, 884 (sequence "XMM%u", 0, 15))>; 885def CSR_64_RT_AllRegs_AVX : CalleeSavedRegs<(add CSR_64_RT_MostRegs, 886 (sequence "YMM%u", 0, 15))>; 887 888def CSR_64_MostRegs : CalleeSavedRegs<(add RBX, RCX, RDX, RSI, RDI, R8, R9, R10, 889 R11, R12, R13, R14, R15, RBP, 890 (sequence "XMM%u", 0, 15))>; 891 892def CSR_32_AllRegs : CalleeSavedRegs<(add EAX, EBX, ECX, EDX, EBP, ESI, 893 EDI)>; 894def CSR_32_AllRegs_SSE : CalleeSavedRegs<(add CSR_32_AllRegs, 895 (sequence "XMM%u", 0, 7))>; 896def CSR_32_AllRegs_AVX : CalleeSavedRegs<(add CSR_32_AllRegs, 897 (sequence "YMM%u", 0, 7))>; 898def CSR_32_AllRegs_AVX512 : CalleeSavedRegs<(add CSR_32_AllRegs, 899 (sequence "ZMM%u", 0, 7), 900 (sequence "K%u", 0, 7))>; 901 902def CSR_64_AllRegs : CalleeSavedRegs<(add CSR_64_MostRegs, RAX)>; 903def CSR_64_AllRegs_AVX : CalleeSavedRegs<(sub (add CSR_64_MostRegs, RAX, 904 (sequence "YMM%u", 0, 15)), 905 (sequence "XMM%u", 0, 15))>; 906def CSR_64_AllRegs_AVX512 : CalleeSavedRegs<(sub (add CSR_64_MostRegs, RAX, 907 (sequence "ZMM%u", 0, 31), 908 (sequence "K%u", 0, 7)), 909 (sequence "XMM%u", 0, 15))>; 910 911// Standard C + YMM6-15 912def CSR_Win64_Intel_OCL_BI_AVX : CalleeSavedRegs<(add RBX, RBP, RDI, RSI, R12, 913 R13, R14, R15, 914 (sequence "YMM%u", 6, 15))>; 915 916def CSR_Win64_Intel_OCL_BI_AVX512 : CalleeSavedRegs<(add RBX, RBP, RDI, RSI, 917 R12, R13, R14, R15, 918 (sequence "ZMM%u", 6, 21), 919 K4, K5, K6, K7)>; 920//Standard C + XMM 8-15 921def CSR_64_Intel_OCL_BI : CalleeSavedRegs<(add CSR_64, 922 (sequence "XMM%u", 8, 15))>; 923 924//Standard C + YMM 8-15 925def CSR_64_Intel_OCL_BI_AVX : CalleeSavedRegs<(add CSR_64, 926 (sequence "YMM%u", 8, 15))>; 927 928def CSR_64_Intel_OCL_BI_AVX512 : CalleeSavedRegs<(add RBX, RDI, RSI, R14, R15, 929 (sequence "ZMM%u", 16, 31), 930 K4, K5, K6, K7)>; 931 932// Only R12 is preserved for PHP calls in HHVM. 933def CSR_64_HHVM : CalleeSavedRegs<(add R12)>; 934