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https://github.com/RPCS3/llvm-mirror.git
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dd70b7c1eb
Differential Revision: https://reviews.llvm.org/D40003 Patch by Shiva Chen. llvm-svn: 320558
207 lines
8.4 KiB
TableGen
207 lines
8.4 KiB
TableGen
//===-- RISCVRegisterInfo.td - RISC-V Register defs --------*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Declarations that describe the RISC-V register files
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//===----------------------------------------------------------------------===//
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let Namespace = "RISCV" in {
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class RISCVReg<bits<5> Enc, string n, list<string> alt = []> : Register<n> {
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let HWEncoding{4-0} = Enc;
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let AltNames = alt;
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}
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class RISCVReg32<bits<5> Enc, string n, list<string> alt = []> : Register<n> {
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let HWEncoding{4-0} = Enc;
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let AltNames = alt;
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}
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// Because RISCVReg64 register have AsmName and AltNames that alias with their
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// 32-bit sub-register, RISCVAsmParser will need to coerce a register number
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// from a RISCVReg32 to the equivalent RISCVReg64 when appropriate.
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def sub_32 : SubRegIndex<32>;
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class RISCVReg64<RISCVReg32 subreg> : Register<""> {
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let HWEncoding{4-0} = subreg.HWEncoding{4-0};
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let SubRegs = [subreg];
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let SubRegIndices = [sub_32];
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let AsmName = subreg.AsmName;
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let AltNames = subreg.AltNames;
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}
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def ABIRegAltName : RegAltNameIndex;
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} // Namespace = "RISCV"
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// Integer registers
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let RegAltNameIndices = [ABIRegAltName] in {
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def X0 : RISCVReg<0, "x0", ["zero"]>, DwarfRegNum<[0]>;
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def X1 : RISCVReg<1, "x1", ["ra"]>, DwarfRegNum<[1]>;
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def X2 : RISCVReg<2, "x2", ["sp"]>, DwarfRegNum<[2]>;
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def X3 : RISCVReg<3, "x3", ["gp"]>, DwarfRegNum<[3]>;
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def X4 : RISCVReg<4, "x4", ["tp"]>, DwarfRegNum<[4]>;
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def X5 : RISCVReg<5, "x5", ["t0"]>, DwarfRegNum<[5]>;
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def X6 : RISCVReg<6, "x6", ["t1"]>, DwarfRegNum<[6]>;
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def X7 : RISCVReg<7, "x7", ["t2"]>, DwarfRegNum<[7]>;
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def X8 : RISCVReg<8, "x8", ["s0"]>, DwarfRegNum<[8]>;
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def X9 : RISCVReg<9, "x9", ["s1"]>, DwarfRegNum<[9]>;
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def X10 : RISCVReg<10,"x10", ["a0"]>, DwarfRegNum<[10]>;
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def X11 : RISCVReg<11,"x11", ["a1"]>, DwarfRegNum<[11]>;
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def X12 : RISCVReg<12,"x12", ["a2"]>, DwarfRegNum<[12]>;
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def X13 : RISCVReg<13,"x13", ["a3"]>, DwarfRegNum<[13]>;
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def X14 : RISCVReg<14,"x14", ["a4"]>, DwarfRegNum<[14]>;
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def X15 : RISCVReg<15,"x15", ["a5"]>, DwarfRegNum<[15]>;
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def X16 : RISCVReg<16,"x16", ["a6"]>, DwarfRegNum<[16]>;
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def X17 : RISCVReg<17,"x17", ["a7"]>, DwarfRegNum<[17]>;
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def X18 : RISCVReg<18,"x18", ["s2"]>, DwarfRegNum<[18]>;
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def X19 : RISCVReg<19,"x19", ["s3"]>, DwarfRegNum<[19]>;
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def X20 : RISCVReg<20,"x20", ["s4"]>, DwarfRegNum<[20]>;
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def X21 : RISCVReg<21,"x21", ["s5"]>, DwarfRegNum<[21]>;
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def X22 : RISCVReg<22,"x22", ["s6"]>, DwarfRegNum<[22]>;
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def X23 : RISCVReg<23,"x23", ["s7"]>, DwarfRegNum<[23]>;
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def X24 : RISCVReg<24,"x24", ["s8"]>, DwarfRegNum<[24]>;
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def X25 : RISCVReg<25,"x25", ["s9"]>, DwarfRegNum<[25]>;
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def X26 : RISCVReg<26,"x26", ["s10"]>, DwarfRegNum<[26]>;
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def X27 : RISCVReg<27,"x27", ["s11"]>, DwarfRegNum<[27]>;
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def X28 : RISCVReg<28,"x28", ["t3"]>, DwarfRegNum<[28]>;
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def X29 : RISCVReg<29,"x29", ["t4"]>, DwarfRegNum<[29]>;
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def X30 : RISCVReg<30,"x30", ["t5"]>, DwarfRegNum<[30]>;
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def X31 : RISCVReg<31,"x31", ["t6"]>, DwarfRegNum<[31]>;
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}
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def XLenVT : ValueTypeByHwMode<[RV32, RV64, DefaultMode],
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[i32, i64, i32]>;
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// The order of registers represents the preferred allocation sequence.
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// Registers are listed in the order caller-save, callee-save, specials.
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def GPR : RegisterClass<"RISCV", [XLenVT], 32, (add
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(sequence "X%u", 10, 17),
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(sequence "X%u", 5, 7),
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(sequence "X%u", 28, 31),
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(sequence "X%u", 8, 9),
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(sequence "X%u", 18, 27),
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(sequence "X%u", 0, 4)
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)> {
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let RegInfos = RegInfoByHwMode<
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[RV32, RV64, DefaultMode],
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[RegInfo<32,32,32>, RegInfo<64,64,64>, RegInfo<32,32,32>]>;
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}
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// The order of registers represents the preferred allocation sequence.
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// Registers are listed in the order caller-save, callee-save, specials.
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def GPRNoX0 : RegisterClass<"RISCV", [XLenVT], 32, (add
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(sequence "X%u", 10, 17),
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(sequence "X%u", 5, 7),
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(sequence "X%u", 28, 31),
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(sequence "X%u", 8, 9),
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(sequence "X%u", 18, 27),
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(sequence "X%u", 1, 4)
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)> {
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let RegInfos = RegInfoByHwMode<
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[RV32, RV64, DefaultMode],
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[RegInfo<32,32,32>, RegInfo<64,64,64>, RegInfo<32,32,32>]>;
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}
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def GPRNoX0X2 : RegisterClass<"RISCV", [XLenVT], 32, (add
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(sequence "X%u", 10, 17),
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(sequence "X%u", 5, 7),
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(sequence "X%u", 28, 31),
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(sequence "X%u", 8, 9),
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(sequence "X%u", 18, 27),
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X1, X3, X4
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)> {
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let RegInfos = RegInfoByHwMode<
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[RV32, RV64, DefaultMode],
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[RegInfo<32,32,32>, RegInfo<64,64,64>, RegInfo<32,32,32>]>;
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}
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def GPRC : RegisterClass<"RISCV", [XLenVT], 32, (add
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(sequence "X%u", 10, 15),
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(sequence "X%u", 8, 9)
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)> {
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let RegInfos = RegInfoByHwMode<
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[RV32, RV64, DefaultMode],
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[RegInfo<32,32,32>, RegInfo<64,64,64>, RegInfo<32,32,32>]>;
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}
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def SP : RegisterClass<"RISCV", [XLenVT], 32, (add X2)> {
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let RegInfos = RegInfoByHwMode<
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[RV32, RV64, DefaultMode],
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[RegInfo<32,32,32>, RegInfo<64,64,64>, RegInfo<32,32,32>]>;
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}
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// Floating point registers
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let RegAltNameIndices = [ABIRegAltName] in {
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def F0_32 : RISCVReg32<0, "f0", ["ft0"]>, DwarfRegNum<[32]>;
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def F1_32 : RISCVReg32<1, "f1", ["ft1"]>, DwarfRegNum<[33]>;
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def F2_32 : RISCVReg32<2, "f2", ["ft2"]>, DwarfRegNum<[34]>;
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def F3_32 : RISCVReg32<3, "f3", ["ft3"]>, DwarfRegNum<[35]>;
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def F4_32 : RISCVReg32<4, "f4", ["ft4"]>, DwarfRegNum<[36]>;
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def F5_32 : RISCVReg32<5, "f5", ["ft5"]>, DwarfRegNum<[37]>;
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def F6_32 : RISCVReg32<6, "f6", ["ft6"]>, DwarfRegNum<[38]>;
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def F7_32 : RISCVReg32<7, "f7", ["ft7"]>, DwarfRegNum<[39]>;
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def F8_32 : RISCVReg32<8, "f8", ["fs0"]>, DwarfRegNum<[40]>;
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def F9_32 : RISCVReg32<9, "f9", ["fs1"]>, DwarfRegNum<[41]>;
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def F10_32 : RISCVReg32<10,"f10", ["fa0"]>, DwarfRegNum<[42]>;
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def F11_32 : RISCVReg32<11,"f11", ["fa1"]>, DwarfRegNum<[43]>;
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def F12_32 : RISCVReg32<12,"f12", ["fa2"]>, DwarfRegNum<[44]>;
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def F13_32 : RISCVReg32<13,"f13", ["fa3"]>, DwarfRegNum<[45]>;
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def F14_32 : RISCVReg32<14,"f14", ["fa4"]>, DwarfRegNum<[46]>;
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def F15_32 : RISCVReg32<15,"f15", ["fa5"]>, DwarfRegNum<[47]>;
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def F16_32 : RISCVReg32<16,"f16", ["fa6"]>, DwarfRegNum<[48]>;
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def F17_32 : RISCVReg32<17,"f17", ["fa7"]>, DwarfRegNum<[49]>;
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def F18_32 : RISCVReg32<18,"f18", ["fs2"]>, DwarfRegNum<[50]>;
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def F19_32 : RISCVReg32<19,"f19", ["fs3"]>, DwarfRegNum<[51]>;
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def F20_32 : RISCVReg32<20,"f20", ["fs4"]>, DwarfRegNum<[52]>;
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def F21_32 : RISCVReg32<21,"f21", ["fs5"]>, DwarfRegNum<[53]>;
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def F22_32 : RISCVReg32<22,"f22", ["fs6"]>, DwarfRegNum<[54]>;
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def F23_32 : RISCVReg32<23,"f23", ["fs7"]>, DwarfRegNum<[55]>;
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def F24_32 : RISCVReg32<24,"f24", ["fs8"]>, DwarfRegNum<[56]>;
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def F25_32 : RISCVReg32<25,"f25", ["fs9"]>, DwarfRegNum<[57]>;
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def F26_32 : RISCVReg32<26,"f26", ["fs10"]>, DwarfRegNum<[58]>;
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def F27_32 : RISCVReg32<27,"f27", ["fs11"]>, DwarfRegNum<[59]>;
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def F28_32 : RISCVReg32<28,"f28", ["ft8"]>, DwarfRegNum<[60]>;
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def F29_32 : RISCVReg32<29,"f29", ["ft9"]>, DwarfRegNum<[61]>;
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def F30_32 : RISCVReg32<30,"f30", ["ft10"]>, DwarfRegNum<[62]>;
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def F31_32 : RISCVReg32<31,"f31", ["ft11"]>, DwarfRegNum<[63]>;
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foreach Index = 0-31 in {
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def F#Index#_64 : RISCVReg64<!cast<RISCVReg32>("F"#Index#"_32")>,
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DwarfRegNum<[!add(Index, 32)]>;
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}
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}
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// The order of registers represents the preferred allocation sequence,
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// meaning caller-save regs are listed before callee-save.
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def FPR32 : RegisterClass<"RISCV", [f32], 32, (add
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(sequence "F%u_32", 0, 7),
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(sequence "F%u_32", 10, 17),
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(sequence "F%u_32", 28, 31),
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(sequence "F%u_32", 8, 9),
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(sequence "F%u_32", 18, 27)
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)>;
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def FPR32C : RegisterClass<"RISCV", [f32], 32, (add
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(sequence "F%u_32", 10, 15),
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(sequence "F%u_32", 8, 9)
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)>;
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// The order of registers represents the preferred allocation sequence,
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// meaning caller-save regs are listed before callee-save.
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def FPR64 : RegisterClass<"RISCV", [f64], 64, (add
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(sequence "F%u_64", 0, 7),
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(sequence "F%u_64", 10, 17),
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(sequence "F%u_64", 28, 31),
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(sequence "F%u_64", 8, 9),
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(sequence "F%u_64", 18, 27)
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)>;
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def FPR64C : RegisterClass<"RISCV", [f64], 64, (add
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(sequence "F%u_64", 10, 15),
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(sequence "F%u_64", 8, 9)
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)>;
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