mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-31 09:11:13 +00:00
2466c3766d
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44597 91177308-0d34-0410-b5e6-96231b3b80d8
395 lines
17 KiB
TableGen
395 lines
17 KiB
TableGen
//===- SPURegisterInfo.td - The Cell SPU Register File -----*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by a team from the Computer Systems Research
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// Department at The Aerospace Corporation and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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//
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//===----------------------------------------------------------------------===//
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class SPUReg<string n> : Register<n> {
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let Namespace = "SPU";
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}
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// The SPU's register are all 128-bits wide, which makes specifying the
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// registers relatively easy, if relatively mundane:
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class SPUVecReg<bits<7> num, string n> : SPUReg<n> {
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field bits<7> Num = num;
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}
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def R0 : SPUVecReg<0, "$lr">, DwarfRegNum<[0]>;
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def R1 : SPUVecReg<1, "$sp">, DwarfRegNum<[1]>;
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def R2 : SPUVecReg<2, "$2">, DwarfRegNum<[2]>;
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def R3 : SPUVecReg<3, "$3">, DwarfRegNum<[3]>;
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def R4 : SPUVecReg<4, "$4">, DwarfRegNum<[4]>;
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def R5 : SPUVecReg<5, "$5">, DwarfRegNum<[5]>;
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def R6 : SPUVecReg<6, "$6">, DwarfRegNum<[6]>;
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def R7 : SPUVecReg<7, "$7">, DwarfRegNum<[7]>;
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def R8 : SPUVecReg<8, "$8">, DwarfRegNum<[8]>;
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def R9 : SPUVecReg<9, "$9">, DwarfRegNum<[9]>;
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def R10 : SPUVecReg<10, "$10">, DwarfRegNum<[10]>;
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def R11 : SPUVecReg<11, "$11">, DwarfRegNum<[11]>;
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def R12 : SPUVecReg<12, "$12">, DwarfRegNum<[12]>;
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def R13 : SPUVecReg<13, "$13">, DwarfRegNum<[13]>;
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def R14 : SPUVecReg<14, "$14">, DwarfRegNum<[14]>;
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def R15 : SPUVecReg<15, "$15">, DwarfRegNum<[15]>;
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def R16 : SPUVecReg<16, "$16">, DwarfRegNum<[16]>;
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def R17 : SPUVecReg<17, "$17">, DwarfRegNum<[17]>;
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def R18 : SPUVecReg<18, "$18">, DwarfRegNum<[18]>;
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def R19 : SPUVecReg<19, "$19">, DwarfRegNum<[19]>;
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def R20 : SPUVecReg<20, "$20">, DwarfRegNum<[20]>;
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def R21 : SPUVecReg<21, "$21">, DwarfRegNum<[21]>;
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def R22 : SPUVecReg<22, "$22">, DwarfRegNum<[22]>;
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def R23 : SPUVecReg<23, "$23">, DwarfRegNum<[23]>;
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def R24 : SPUVecReg<24, "$24">, DwarfRegNum<[24]>;
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def R25 : SPUVecReg<25, "$25">, DwarfRegNum<[25]>;
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def R26 : SPUVecReg<26, "$26">, DwarfRegNum<[26]>;
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def R27 : SPUVecReg<27, "$27">, DwarfRegNum<[27]>;
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def R28 : SPUVecReg<28, "$28">, DwarfRegNum<[28]>;
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def R29 : SPUVecReg<29, "$29">, DwarfRegNum<[29]>;
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def R30 : SPUVecReg<30, "$30">, DwarfRegNum<[30]>;
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def R31 : SPUVecReg<31, "$31">, DwarfRegNum<[31]>;
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def R32 : SPUVecReg<32, "$32">, DwarfRegNum<[32]>;
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def R33 : SPUVecReg<33, "$33">, DwarfRegNum<[33]>;
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def R34 : SPUVecReg<34, "$34">, DwarfRegNum<[34]>;
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def R35 : SPUVecReg<35, "$35">, DwarfRegNum<[35]>;
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def R36 : SPUVecReg<36, "$36">, DwarfRegNum<[36]>;
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def R37 : SPUVecReg<37, "$37">, DwarfRegNum<[37]>;
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def R38 : SPUVecReg<38, "$38">, DwarfRegNum<[38]>;
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def R39 : SPUVecReg<39, "$39">, DwarfRegNum<[39]>;
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def R40 : SPUVecReg<40, "$40">, DwarfRegNum<[40]>;
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def R41 : SPUVecReg<41, "$41">, DwarfRegNum<[41]>;
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def R42 : SPUVecReg<42, "$42">, DwarfRegNum<[42]>;
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def R43 : SPUVecReg<43, "$43">, DwarfRegNum<[43]>;
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def R44 : SPUVecReg<44, "$44">, DwarfRegNum<[44]>;
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def R45 : SPUVecReg<45, "$45">, DwarfRegNum<[45]>;
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def R46 : SPUVecReg<46, "$46">, DwarfRegNum<[46]>;
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def R47 : SPUVecReg<47, "$47">, DwarfRegNum<[47]>;
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def R48 : SPUVecReg<48, "$48">, DwarfRegNum<[48]>;
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def R49 : SPUVecReg<49, "$49">, DwarfRegNum<[49]>;
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def R50 : SPUVecReg<50, "$50">, DwarfRegNum<[50]>;
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def R51 : SPUVecReg<51, "$51">, DwarfRegNum<[51]>;
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def R52 : SPUVecReg<52, "$52">, DwarfRegNum<[52]>;
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def R53 : SPUVecReg<53, "$53">, DwarfRegNum<[53]>;
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def R54 : SPUVecReg<54, "$54">, DwarfRegNum<[54]>;
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def R55 : SPUVecReg<55, "$55">, DwarfRegNum<[55]>;
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def R56 : SPUVecReg<56, "$56">, DwarfRegNum<[56]>;
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def R57 : SPUVecReg<57, "$57">, DwarfRegNum<[57]>;
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def R58 : SPUVecReg<58, "$58">, DwarfRegNum<[58]>;
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def R59 : SPUVecReg<59, "$59">, DwarfRegNum<[59]>;
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def R60 : SPUVecReg<60, "$60">, DwarfRegNum<[60]>;
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def R61 : SPUVecReg<61, "$61">, DwarfRegNum<[61]>;
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def R62 : SPUVecReg<62, "$62">, DwarfRegNum<[62]>;
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def R63 : SPUVecReg<63, "$63">, DwarfRegNum<[63]>;
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def R64 : SPUVecReg<64, "$64">, DwarfRegNum<[64]>;
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def R65 : SPUVecReg<65, "$65">, DwarfRegNum<[65]>;
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def R66 : SPUVecReg<66, "$66">, DwarfRegNum<[66]>;
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def R67 : SPUVecReg<67, "$67">, DwarfRegNum<[67]>;
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def R68 : SPUVecReg<68, "$68">, DwarfRegNum<[68]>;
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def R69 : SPUVecReg<69, "$69">, DwarfRegNum<[69]>;
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def R70 : SPUVecReg<70, "$70">, DwarfRegNum<[70]>;
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def R71 : SPUVecReg<71, "$71">, DwarfRegNum<[71]>;
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def R72 : SPUVecReg<72, "$72">, DwarfRegNum<[72]>;
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def R73 : SPUVecReg<73, "$73">, DwarfRegNum<[73]>;
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def R74 : SPUVecReg<74, "$74">, DwarfRegNum<[74]>;
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def R75 : SPUVecReg<75, "$75">, DwarfRegNum<[75]>;
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def R76 : SPUVecReg<76, "$76">, DwarfRegNum<[76]>;
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def R77 : SPUVecReg<77, "$77">, DwarfRegNum<[77]>;
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def R78 : SPUVecReg<78, "$78">, DwarfRegNum<[78]>;
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def R79 : SPUVecReg<79, "$79">, DwarfRegNum<[79]>;
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def R80 : SPUVecReg<80, "$80">, DwarfRegNum<[80]>;
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def R81 : SPUVecReg<81, "$81">, DwarfRegNum<[81]>;
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def R82 : SPUVecReg<82, "$82">, DwarfRegNum<[82]>;
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def R83 : SPUVecReg<83, "$83">, DwarfRegNum<[83]>;
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def R84 : SPUVecReg<84, "$84">, DwarfRegNum<[84]>;
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def R85 : SPUVecReg<85, "$85">, DwarfRegNum<[85]>;
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def R86 : SPUVecReg<86, "$86">, DwarfRegNum<[86]>;
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def R87 : SPUVecReg<87, "$87">, DwarfRegNum<[87]>;
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def R88 : SPUVecReg<88, "$88">, DwarfRegNum<[88]>;
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def R89 : SPUVecReg<89, "$89">, DwarfRegNum<[89]>;
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def R90 : SPUVecReg<90, "$90">, DwarfRegNum<[90]>;
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def R91 : SPUVecReg<91, "$91">, DwarfRegNum<[91]>;
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def R92 : SPUVecReg<92, "$92">, DwarfRegNum<[92]>;
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def R93 : SPUVecReg<93, "$93">, DwarfRegNum<[93]>;
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def R94 : SPUVecReg<94, "$94">, DwarfRegNum<[94]>;
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def R95 : SPUVecReg<95, "$95">, DwarfRegNum<[95]>;
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def R96 : SPUVecReg<96, "$96">, DwarfRegNum<[96]>;
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def R97 : SPUVecReg<97, "$97">, DwarfRegNum<[97]>;
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def R98 : SPUVecReg<98, "$98">, DwarfRegNum<[98]>;
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def R99 : SPUVecReg<99, "$99">, DwarfRegNum<[99]>;
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def R100 : SPUVecReg<100, "$100">, DwarfRegNum<[100]>;
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def R101 : SPUVecReg<101, "$101">, DwarfRegNum<[101]>;
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def R102 : SPUVecReg<102, "$102">, DwarfRegNum<[102]>;
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def R103 : SPUVecReg<103, "$103">, DwarfRegNum<[103]>;
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def R104 : SPUVecReg<104, "$104">, DwarfRegNum<[104]>;
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def R105 : SPUVecReg<105, "$105">, DwarfRegNum<[105]>;
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def R106 : SPUVecReg<106, "$106">, DwarfRegNum<[106]>;
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def R107 : SPUVecReg<107, "$107">, DwarfRegNum<[107]>;
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def R108 : SPUVecReg<108, "$108">, DwarfRegNum<[108]>;
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def R109 : SPUVecReg<109, "$109">, DwarfRegNum<[109]>;
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def R110 : SPUVecReg<110, "$110">, DwarfRegNum<[110]>;
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def R111 : SPUVecReg<111, "$111">, DwarfRegNum<[111]>;
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def R112 : SPUVecReg<112, "$112">, DwarfRegNum<[112]>;
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def R113 : SPUVecReg<113, "$113">, DwarfRegNum<[113]>;
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def R114 : SPUVecReg<114, "$114">, DwarfRegNum<[114]>;
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def R115 : SPUVecReg<115, "$115">, DwarfRegNum<[115]>;
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def R116 : SPUVecReg<116, "$116">, DwarfRegNum<[116]>;
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def R117 : SPUVecReg<117, "$117">, DwarfRegNum<[117]>;
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def R118 : SPUVecReg<118, "$118">, DwarfRegNum<[118]>;
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def R119 : SPUVecReg<119, "$119">, DwarfRegNum<[119]>;
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def R120 : SPUVecReg<120, "$120">, DwarfRegNum<[120]>;
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def R121 : SPUVecReg<121, "$121">, DwarfRegNum<[121]>;
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def R122 : SPUVecReg<122, "$122">, DwarfRegNum<[122]>;
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def R123 : SPUVecReg<123, "$123">, DwarfRegNum<[123]>;
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def R124 : SPUVecReg<124, "$124">, DwarfRegNum<[124]>;
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def R125 : SPUVecReg<125, "$125">, DwarfRegNum<[125]>;
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def R126 : SPUVecReg<126, "$126">, DwarfRegNum<[126]>;
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def R127 : SPUVecReg<127, "$127">, DwarfRegNum<[127]>;
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/* Need floating point status register here: */
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/* def FPCSR : ... */
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// The SPU's registers as 128-bit wide entities, and can function as general
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// purpose registers, where the operands are in the "preferred slot":
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def GPRC : RegisterClass<"SPU", [i128], 128,
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[
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/* volatile register */
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R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16,
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R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31,
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R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46,
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R47, R48, R49, R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61,
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R62, R63, R64, R65, R66, R67, R68, R69, R70, R71, R72, R73, R74, R75, R76,
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R77, R78, R79,
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/* non-volatile register: take hint from PPC and allocate in reverse order */
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R127, R126, R125, R124, R123, R122, R121, R120, R119, R118, R117, R116, R115,
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R114, R113, R112, R111, R110, R109, R108, R107, R106, R105, R104, R103, R102,
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R101, R100, R99, R98, R97, R96, R95, R94, R93, R92, R91, R90, R89, R88, R87,
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R86, R85, R84, R83, R82, R81, R80,
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/* environment ptr, SP, LR */
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R2, R1, R0 ]>
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{
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let MethodProtos = [{
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iterator allocation_order_begin(const MachineFunction &MF) const;
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iterator allocation_order_end(const MachineFunction &MF) const;
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}];
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let MethodBodies = [{
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GPRCClass::iterator
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GPRCClass::allocation_order_begin(const MachineFunction &MF) const {
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return begin();
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}
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GPRCClass::iterator
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GPRCClass::allocation_order_end(const MachineFunction &MF) const {
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return end()-3; // don't allocate R2, R1, or R0 (envp, sp, lr)
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}
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}];
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}
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// The SPU's registers as 64-bit wide (double word integer) "preferred slot":
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def R64C : RegisterClass<"SPU", [i64], 128,
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[
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/* volatile register */
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R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16,
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R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31,
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R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46,
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R47, R48, R49, R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61,
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R62, R63, R64, R65, R66, R67, R68, R69, R70, R71, R72, R73, R74, R75, R76,
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R77, R78, R79,
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/* non-volatile register: take hint from PPC and allocate in reverse order */
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R127, R126, R125, R124, R123, R122, R121, R120, R119, R118, R117, R116, R115,
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R114, R113, R112, R111, R110, R109, R108, R107, R106, R105, R104, R103, R102,
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R101, R100, R99, R98, R97, R96, R95, R94, R93, R92, R91, R90, R89, R88, R87,
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R86, R85, R84, R83, R82, R81, R80,
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/* environment ptr, SP, LR */
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R2, R1, R0 ]>
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{
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let MethodProtos = [{
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iterator allocation_order_begin(const MachineFunction &MF) const;
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iterator allocation_order_end(const MachineFunction &MF) const;
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}];
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let MethodBodies = [{
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R64CClass::iterator
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R64CClass::allocation_order_begin(const MachineFunction &MF) const {
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return begin();
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}
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R64CClass::iterator
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R64CClass::allocation_order_end(const MachineFunction &MF) const {
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return end()-3; // don't allocate R2, R1, or R0 (envp, sp, lr)
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}
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}];
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}
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// The SPU's registers as 64-bit wide (double word) FP "preferred slot":
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def R64FP : RegisterClass<"SPU", [f64], 128,
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[
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/* volatile register */
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R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16,
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R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31,
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R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46,
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R47, R48, R49, R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61,
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R62, R63, R64, R65, R66, R67, R68, R69, R70, R71, R72, R73, R74, R75, R76,
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R77, R78, R79,
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/* non-volatile register: take hint from PPC and allocate in reverse order */
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R127, R126, R125, R124, R123, R122, R121, R120, R119, R118, R117, R116, R115,
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R114, R113, R112, R111, R110, R109, R108, R107, R106, R105, R104, R103, R102,
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R101, R100, R99, R98, R97, R96, R95, R94, R93, R92, R91, R90, R89, R88, R87,
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R86, R85, R84, R83, R82, R81, R80,
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/* environment ptr, SP, LR */
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R2, R1, R0 ]>
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{
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let MethodProtos = [{
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iterator allocation_order_begin(const MachineFunction &MF) const;
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iterator allocation_order_end(const MachineFunction &MF) const;
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}];
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let MethodBodies = [{
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R64FPClass::iterator
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R64FPClass::allocation_order_begin(const MachineFunction &MF) const {
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return begin();
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}
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R64FPClass::iterator
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R64FPClass::allocation_order_end(const MachineFunction &MF) const {
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return end()-3; // don't allocate R2, R1, or R0 (envp, sp, lr)
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}
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}];
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}
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// The SPU's registers as 32-bit wide (word) "preferred slot":
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def R32C : RegisterClass<"SPU", [i32], 128,
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[
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/* volatile register */
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R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16,
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R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31,
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R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46,
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R47, R48, R49, R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61,
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R62, R63, R64, R65, R66, R67, R68, R69, R70, R71, R72, R73, R74, R75, R76,
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R77, R78, R79,
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/* non-volatile register: take hint from PPC and allocate in reverse order */
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R127, R126, R125, R124, R123, R122, R121, R120, R119, R118, R117, R116, R115,
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R114, R113, R112, R111, R110, R109, R108, R107, R106, R105, R104, R103, R102,
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R101, R100, R99, R98, R97, R96, R95, R94, R93, R92, R91, R90, R89, R88, R87,
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R86, R85, R84, R83, R82, R81, R80,
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/* environment ptr, SP, LR */
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R2, R1, R0 ]>
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{
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let MethodProtos = [{
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iterator allocation_order_begin(const MachineFunction &MF) const;
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iterator allocation_order_end(const MachineFunction &MF) const;
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}];
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let MethodBodies = [{
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R32CClass::iterator
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R32CClass::allocation_order_begin(const MachineFunction &MF) const {
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return begin();
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}
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R32CClass::iterator
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R32CClass::allocation_order_end(const MachineFunction &MF) const {
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return end()-3; // don't allocate R2, R1, or R0 (envp, sp, lr)
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}
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}];
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}
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// The SPU's registers as single precision floating point "preferred slot":
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def R32FP : RegisterClass<"SPU", [f32], 128,
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[
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/* volatile register */
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R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16,
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|
R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31,
|
|
R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46,
|
|
R47, R48, R49, R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61,
|
|
R62, R63, R64, R65, R66, R67, R68, R69, R70, R71, R72, R73, R74, R75, R76,
|
|
R77, R78, R79,
|
|
/* non-volatile register: take hint from PPC and allocate in reverse order */
|
|
R127, R126, R125, R124, R123, R122, R121, R120, R119, R118, R117, R116, R115,
|
|
R114, R113, R112, R111, R110, R109, R108, R107, R106, R105, R104, R103, R102,
|
|
R101, R100, R99, R98, R97, R96, R95, R94, R93, R92, R91, R90, R89, R88, R87,
|
|
R86, R85, R84, R83, R82, R81, R80,
|
|
/* environment ptr, SP, LR */
|
|
R2, R1, R0 ]>
|
|
{
|
|
let MethodProtos = [{
|
|
iterator allocation_order_begin(const MachineFunction &MF) const;
|
|
iterator allocation_order_end(const MachineFunction &MF) const;
|
|
}];
|
|
let MethodBodies = [{
|
|
R32FPClass::iterator
|
|
R32FPClass::allocation_order_begin(const MachineFunction &MF) const {
|
|
return begin();
|
|
}
|
|
R32FPClass::iterator
|
|
R32FPClass::allocation_order_end(const MachineFunction &MF) const {
|
|
return end()-3; // don't allocate R2, R1, or R0 (envp, sp, lr)
|
|
}
|
|
}];
|
|
}
|
|
|
|
// The SPU's registers as 16-bit wide (halfword) "preferred slot":
|
|
def R16C : RegisterClass<"SPU", [i16], 128,
|
|
[
|
|
/* volatile register */
|
|
R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16,
|
|
R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31,
|
|
R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46,
|
|
R47, R48, R49, R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61,
|
|
R62, R63, R64, R65, R66, R67, R68, R69, R70, R71, R72, R73, R74, R75, R76,
|
|
R77, R78, R79,
|
|
/* non-volatile register: take hint from PPC and allocate in reverse order */
|
|
R127, R126, R125, R124, R123, R122, R121, R120, R119, R118, R117, R116, R115,
|
|
R114, R113, R112, R111, R110, R109, R108, R107, R106, R105, R104, R103, R102,
|
|
R101, R100, R99, R98, R97, R96, R95, R94, R93, R92, R91, R90, R89, R88, R87,
|
|
R86, R85, R84, R83, R82, R81, R80,
|
|
/* environment ptr, SP, LR */
|
|
R2, R1, R0 ]>
|
|
{
|
|
let MethodProtos = [{
|
|
iterator allocation_order_begin(const MachineFunction &MF) const;
|
|
iterator allocation_order_end(const MachineFunction &MF) const;
|
|
}];
|
|
let MethodBodies = [{
|
|
R16CClass::iterator
|
|
R16CClass::allocation_order_begin(const MachineFunction &MF) const {
|
|
return begin();
|
|
}
|
|
R16CClass::iterator
|
|
R16CClass::allocation_order_end(const MachineFunction &MF) const {
|
|
return end()-3; // don't allocate R2, R1, or R0 (envp, sp, lr)
|
|
}
|
|
}];
|
|
}
|
|
|
|
// The SPU's registers as vector registers:
|
|
def VECREG : RegisterClass<"SPU", [v16i8,v8i16,v4i32,v4f32,v2i64,v2f64], 128,
|
|
[
|
|
/* volatile register */
|
|
R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16,
|
|
R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31,
|
|
R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46,
|
|
R47, R48, R49, R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61,
|
|
R62, R63, R64, R65, R66, R67, R68, R69, R70, R71, R72, R73, R74, R75, R76,
|
|
R77, R78, R79,
|
|
/* non-volatile register: take hint from PPC and allocate in reverse order */
|
|
R127, R126, R125, R124, R123, R122, R121, R120, R119, R118, R117, R116, R115,
|
|
R114, R113, R112, R111, R110, R109, R108, R107, R106, R105, R104, R103, R102,
|
|
R101, R100, R99, R98, R97, R96, R95, R94, R93, R92, R91, R90, R89, R88, R87,
|
|
R86, R85, R84, R83, R82, R81, R80,
|
|
/* environment ptr, SP, LR */
|
|
R2, R1, R0 ]>
|
|
{
|
|
let MethodProtos = [{
|
|
iterator allocation_order_begin(const MachineFunction &MF) const;
|
|
iterator allocation_order_end(const MachineFunction &MF) const;
|
|
}];
|
|
let MethodBodies = [{
|
|
VECREGClass::iterator
|
|
VECREGClass::allocation_order_begin(const MachineFunction &MF) const {
|
|
return begin();
|
|
}
|
|
VECREGClass::iterator
|
|
VECREGClass::allocation_order_end(const MachineFunction &MF) const {
|
|
return end()-3; // don't allocate R2, R1, or R0 (envp, sp, lr)
|
|
}
|
|
}];
|
|
}
|