1 //===- SparcV8Reg.td - Describe the SparcV8 Register File -------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Declarations that describe the SparcV8 register file
12 //===----------------------------------------------------------------------===//
14 // Registers are identified with 5-bit ID numbers.
15 // Ri - 32-bit integer registers
16 class Ri<bits<5> num> : Register {
17 field bits<5> Num = num;
19 // Rl - Slots in the integer register file for 64-bit integer values.
20 class Rl<bits<5> num> : Register {
21 field bits<5> Num = num;
23 // Rf - 32-bit floating-point registers
24 class Rf<bits<5> num> : Register {
25 field bits<5> Num = num;
27 // Rd - Slots in the FP register file for 64-bit floating-point values.
28 class Rd<bits<5> num> : Register {
29 field bits<5> Num = num;
31 // Rs - Special "ancillary state registers" registers, like the Y, ASR, PSR,
32 // WIM, TBR, etc registers
33 class Rs<bits<5> num> : Register {
34 field bits<5> Num = num;
37 let Namespace = "V8" in {
38 def G0 : Ri< 0>; def G1 : Ri< 1>; def G2 : Ri< 2>; def G3 : Ri< 3>;
39 def G4 : Ri< 4>; def G5 : Ri< 5>; def G6 : Ri< 6>; def G7 : Ri< 7>;
40 def O0 : Ri< 8>; def O1 : Ri< 9>; def O2 : Ri<10>; def O3 : Ri<11>;
41 def O4 : Ri<12>; def O5 : Ri<13>; def O6 : Ri<14>; def O7 : Ri<15>;
42 def L0 : Ri<16>; def L1 : Ri<17>; def L2 : Ri<18>; def L3 : Ri<19>;
43 def L4 : Ri<20>; def L5 : Ri<21>; def L6 : Ri<22>; def L7 : Ri<23>;
44 def I0 : Ri<24>; def I1 : Ri<25>; def I2 : Ri<26>; def I3 : Ri<27>;
45 def I4 : Ri<28>; def I5 : Ri<29>; def I6 : Ri<30>; def I7 : Ri<31>;
47 // Aliases of the Ri registers used to hold 64-bit integer values.
48 def LG2 : Rl< 2>; def LG4 : Rl< 4>; def LG6 : Rl< 6>;
49 def LO0 : Rl< 8>; def LO2 : Rl<10>; def LO4 : Rl<12>;
50 def LL0 : Rl<16>; def LL2 : Rl<18>; def LL4 : Rl<20>; def LL6 : Rl<22>;
51 def LI0 : Rl<24>; def LI2 : Rl<26>; def LI4 : Rl<28>;
53 // Standard register aliases.
54 def SP : Ri<14>; def FP : Ri<30>;
56 // Floating-point registers:
57 def F0 : Rf< 0>; def F1 : Rf< 1>; def F2 : Rf< 2>; def F3 : Rf< 3>;
58 def F4 : Rf< 4>; def F5 : Rf< 5>; def F6 : Rf< 6>; def F7 : Rf< 7>;
59 def F8 : Rf< 8>; def F9 : Rf< 9>; def F10 : Rf<10>; def F11 : Rf<11>;
60 def F12 : Rf<12>; def F13 : Rf<13>; def F14 : Rf<14>; def F15 : Rf<15>;
61 def F16 : Rf<16>; def F17 : Rf<17>; def F18 : Rf<18>; def F19 : Rf<19>;
62 def F20 : Rf<20>; def F21 : Rf<21>; def F22 : Rf<22>; def F23 : Rf<23>;
63 def F24 : Rf<24>; def F25 : Rf<25>; def F26 : Rf<26>; def F27 : Rf<27>;
64 def F28 : Rf<28>; def F29 : Rf<29>; def F30 : Rf<30>; def F31 : Rf<31>;
66 // Aliases of the F* registers used to hold 64-bit fp values (doubles).
67 def D0 : Rd< 0>; def D1 : Rd< 2>; def D2 : Rd< 4>; def D3 : Rd< 6>;
68 def D4 : Rd< 8>; def D5 : Rd<10>; def D6 : Rd<12>; def D7 : Rd<14>;
69 def D8 : Rd<16>; def D9 : Rd<18>; def D10 : Rd<20>; def D11 : Rd<22>;
70 def D12 : Rd<24>; def D13 : Rd<26>; def D14 : Rd<28>; def D15 : Rd<30>;
79 // FIXME: the register order should be defined in terms of the preferred
80 // allocation order...
82 def IntRegs : RegisterClass<i32, 8, [L0, L1, L2, L3, L4, L5, L6, L7,
83 I0, I1, I2, I3, I4, I5,
84 G1, G2, G3, G4, G5, G6, G7,
85 O0, O1, O2, O3, O4, O5, O7,
86 // Non-allocatable regs
89 iterator allocation_order_end(MachineFunction &MF) const {
90 return end()-4; // Don't allocate special registers
95 def LongRegs : RegisterClass<i64, 8, [LL0, LL2, LL4, LL6, LI0, LI2,
96 LI4, LG2, LG4, LG6, LO0, LO2, LO4]>;
98 def FPRegs : RegisterClass<f32, 4, [F0, F1, F2, F3, F4, F5, F6, F7, F8,
99 F9, F10, F11, F12, F13, F14, F15, F16, F17, F18, F19, F20, F21, F22,
100 F23, F24, F25, F26, F27, F28, F29, F30, F31]>;
102 def DFPRegs : RegisterClass<f64, 8, [D0, D1, D2, D3, D4, D5, D6, D7,
103 D8, D9, D10, D11, D12, D13, D14, D15]>;
105 // Tell the register file generator that the double-fp pseudo-registers
106 // alias the registers used for single-fp values.
107 def : RegisterAliases<D0, [F0, F1]>;
108 def : RegisterAliases<D1, [F2, F3]>;
109 def : RegisterAliases<D2, [F4, F5]>;
110 def : RegisterAliases<D3, [F6, F7]>;
111 def : RegisterAliases<D4, [F8, F9]>;
112 def : RegisterAliases<D5, [F10, F11]>;
113 def : RegisterAliases<D6, [F12, F13]>;
114 def : RegisterAliases<D7, [F14, F15]>;
115 def : RegisterAliases<D8, [F16, F17]>;
116 def : RegisterAliases<D9, [F18, F19]>;
117 def : RegisterAliases<D10, [F20, F21]>;
118 def : RegisterAliases<D11, [F22, F23]>;
119 def : RegisterAliases<D12, [F24, F25]>;
120 def : RegisterAliases<D13, [F26, F27]>;
121 def : RegisterAliases<D14, [F28, F29]>;
122 def : RegisterAliases<D15, [F30, F31]>;
124 // Tell the register file generator that the long integer pseudo-registers
125 // alias the registers used for single-word integer values.
126 def : RegisterAliases<LL0, [L0, L1]>;
127 def : RegisterAliases<LL2, [L2, L3]>;
128 def : RegisterAliases<LL4, [L4, L5]>;
129 def : RegisterAliases<LL6, [L6, L7]>;
130 def : RegisterAliases<LI0, [I0, I1]>;
131 def : RegisterAliases<LI2, [I2, I3]>;
132 def : RegisterAliases<LI4, [I4, I5]>;
133 def : RegisterAliases<LG2, [G2, G3]>;
134 def : RegisterAliases<LG4, [G4, G5]>;
135 def : RegisterAliases<LG6, [G6, G7]>;
136 def : RegisterAliases<LO0, [O0, O1]>;
137 def : RegisterAliases<LO2, [O2, O3]>;
138 def : RegisterAliases<LO4, [O4, O5]>;