1 //===-- VERegisterInfo.td - VE Register defs ---------------*- tablegen -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 //===----------------------------------------------------------------------===//
10 // Declarations that describe the VE register file
11 //===----------------------------------------------------------------------===//
13 class VEReg<bits<7> enc, string n, list<Register> subregs = [],
14 list<string> altNames = [], list<Register> aliases = []>
15 : Register<n, altNames> {
16 let HWEncoding{15-7} = 0;
17 let HWEncoding{6-0} = enc;
19 let SubRegs = subregs;
20 let Aliases = aliases;
23 class VEMiscReg<bits<6> enc, string n>: Register<n> {
24 let HWEncoding{15-6} = 0;
25 let HWEncoding{5-0} = enc;
29 let Namespace = "VE" in {
30 def sub_i8 : SubRegIndex<8, 56>; // Low 8 bit (56..63)
31 def sub_i16 : SubRegIndex<16, 48>; // Low 16 bit (48..63)
32 def sub_i32 : SubRegIndex<32, 32>; // Low 32 bit (32..63)
33 def sub_f32 : SubRegIndex<32>; // High 32 bit (0..31)
34 def sub_even : SubRegIndex<64>; // High 64 bit (0..63)
35 def sub_odd : SubRegIndex<64, 64>; // Low 64 bit (64..127)
36 def AsmName : RegAltNameIndex;
39 //-----------------------------------------------------------------------------
40 // Miscellaneous Registers
41 //-----------------------------------------------------------------------------
43 def USRCC : VEMiscReg<0, "usrcc">; // User clock counter
44 def PSW : VEMiscReg<1, "psw">; // Program status word
45 def SAR : VEMiscReg<2, "sar">; // Store address register
46 def PMMR : VEMiscReg<7, "pmmr">; // Performance monitor mode register
48 // Performance monitor configuration registers
50 def PMCR#I : VEMiscReg<!add(8,I), "pmcr"#I>;
52 // Performance monitor counter
54 def PMC#I : VEMiscReg<!add(16,I), "pmc"#I>;
57 def MISC : RegisterClass<"VE", [i64], 64,
58 (add USRCC, PSW, SAR, PMMR,
59 (sequence "PMCR%u", 0, 3),
60 (sequence "PMC%u", 0, 14))>;
62 //-----------------------------------------------------------------------------
63 // Instruction Counter Register
64 //-----------------------------------------------------------------------------
66 def IC : VEMiscReg<62, "ic">;
68 //-----------------------------------------------------------------------------
70 //-----------------------------------------------------------------------------
72 let RegAltNameIndices = [AsmName] in {
74 // Generic integer registers - 8 bits wide
76 def SB#I : VEReg<I, "sb"#I, [], ["s"#I]>, DwarfRegNum<[I]>;
78 // Generic integer registers - 16 bits wide
79 let SubRegIndices = [sub_i8] in
81 def SH#I : VEReg<I, "sh"#I, [!cast<VEReg>("SB"#I)], ["s"#I]>,
84 // Generic integer registers - 32 bits wide
85 let SubRegIndices = [sub_i16] in
87 def SW#I : VEReg<I, "sw"#I, [!cast<VEReg>("SH"#I)], ["s"#I]>,
90 // Generic floating point registers - 32 bits wide
91 // NOTE: Mark SF#I as alias of SW#I temporary to avoid register allocation
94 def SF#I : VEReg<I, "sf"#I, [], ["s"#I], [!cast<VEReg>("SW"#I)]>,
97 // Generic integer registers - 64 bits wide
98 let SubRegIndices = [sub_i32, sub_f32], CoveredBySubRegs = 1 in
100 def SX#I : VEReg<I, "s"#I, [!cast<VEReg>("SW"#I), !cast<VEReg>("SF"#I)],
101 ["s"#I]>, DwarfRegNum<[I]>;
103 // Aliases of the S* registers used to hold 128-bit for values (long doubles).
104 // Following foreach represents something like:
105 // def Q0 : VEReg<0, "q0", [SX0, SX1], ["s0"]>;
106 // def Q1 : VEReg<2, "q2", [SX2, SX3], ["s2"]>;
108 let SubRegIndices = [sub_even, sub_odd], CoveredBySubRegs = 1 in
110 def Q#I : VEReg<!shl(I,1), "q"#I,
111 [!cast<VEReg>("SX"#!shl(I,1)),
112 !cast<VEReg>("SX"#!add(!shl(I,1),1))],
115 } // RegAltNameIndices = [AsmName]
119 // The register order is defined in terms of the preferred
121 def I8 : RegisterClass<"VE", [i8], 8,
122 (add (sequence "SB%u", 0, 7),
123 (sequence "SB%u", 34, 63),
124 (sequence "SB%u", 8, 33))>;
125 def I16 : RegisterClass<"VE", [i16], 16,
126 (add (sequence "SH%u", 0, 7),
127 (sequence "SH%u", 34, 63),
128 (sequence "SH%u", 8, 33))>;
129 def I32 : RegisterClass<"VE", [i32], 32,
130 (add (sequence "SW%u", 0, 7),
131 (sequence "SW%u", 34, 63),
132 (sequence "SW%u", 8, 33))>;
133 def I64 : RegisterClass<"VE", [i64, f64], 64,
134 (add (sequence "SX%u", 0, 7),
135 (sequence "SX%u", 34, 63),
136 (sequence "SX%u", 8, 33))>;
137 def F32 : RegisterClass<"VE", [f32], 32,
138 (add (sequence "SF%u", 0, 7),
139 (sequence "SF%u", 34, 63),
140 (sequence "SF%u", 8, 33))>;
141 def F128 : RegisterClass<"VE", [f128], 128,
142 (add (sequence "Q%u", 0, 3),
143 (sequence "Q%u", 17, 31),
144 (sequence "Q%u", 4, 16))>;