1 //===-- MSP430RegisterInfo.td - MSP430 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 MSP430 register file
11 //===----------------------------------------------------------------------===//
13 class MSP430Reg<bits<4> num, string n, list<string> alt = []> : Register<n> {
14 field bits<4> Num = num;
15 let Namespace = "MSP430";
16 let HWEncoding{3-0} = num;
20 class MSP430RegWithSubregs<bits<4> num, string n, list<Register> subregs,
21 list<string> alt = []>
22 : RegisterWithSubRegs<n, subregs> {
23 field bits<4> Num = num;
24 let Namespace = "MSP430";
25 let HWEncoding{3-0} = num;
29 //===----------------------------------------------------------------------===//
31 //===----------------------------------------------------------------------===//
33 def PCB : MSP430Reg<0, "r0", ["pc"]>;
34 def SPB : MSP430Reg<1, "r1", ["sp"]>;
35 def SRB : MSP430Reg<2, "r2", ["sr"]>;
36 def CGB : MSP430Reg<3, "r3", ["cg"]>;
37 def FPB : MSP430Reg<4, "r4", ["fp"]>;
38 def R5B : MSP430Reg<5, "r5">;
39 def R6B : MSP430Reg<6, "r6">;
40 def R7B : MSP430Reg<7, "r7">;
41 def R8B : MSP430Reg<8, "r8">;
42 def R9B : MSP430Reg<9, "r9">;
43 def R10B : MSP430Reg<10, "r10">;
44 def R11B : MSP430Reg<11, "r11">;
45 def R12B : MSP430Reg<12, "r12">;
46 def R13B : MSP430Reg<13, "r13">;
47 def R14B : MSP430Reg<14, "r14">;
48 def R15B : MSP430Reg<15, "r15">;
50 def subreg_8bit : SubRegIndex<8> { let Namespace = "MSP430"; }
52 let SubRegIndices = [subreg_8bit] in {
53 def PC : MSP430RegWithSubregs<0, "r0", [PCB], ["pc"]>;
54 def SP : MSP430RegWithSubregs<1, "r1", [SPB], ["sp"]>;
55 def SR : MSP430RegWithSubregs<2, "r2", [SRB], ["sr"]>;
56 def CG : MSP430RegWithSubregs<3, "r3", [CGB], ["cg"]>;
57 def FP : MSP430RegWithSubregs<4, "r4", [FPB], ["fp"]>;
58 def R5 : MSP430RegWithSubregs<5, "r5", [R5B]>;
59 def R6 : MSP430RegWithSubregs<6, "r6", [R6B]>;
60 def R7 : MSP430RegWithSubregs<7, "r7", [R7B]>;
61 def R8 : MSP430RegWithSubregs<8, "r8", [R8B]>;
62 def R9 : MSP430RegWithSubregs<9, "r9", [R9B]>;
63 def R10 : MSP430RegWithSubregs<10, "r10", [R10B]>;
64 def R11 : MSP430RegWithSubregs<11, "r11", [R11B]>;
65 def R12 : MSP430RegWithSubregs<12, "r12", [R12B]>;
66 def R13 : MSP430RegWithSubregs<13, "r13", [R13B]>;
67 def R14 : MSP430RegWithSubregs<14, "r14", [R14B]>;
68 def R15 : MSP430RegWithSubregs<15, "r15", [R15B]>;
71 def GR8 : RegisterClass<"MSP430", [i8], 8,
73 (add R12B, R13B, R14B, R15B, R11B, R10B, R9B, R8B, R7B, R6B, R5B,
74 // Frame pointer, sometimes allocable
76 // Volatile, but not allocable
79 def GR16 : RegisterClass<"MSP430", [i16], 16,
81 (add R12, R13, R14, R15, R11, R10, R9, R8, R7, R6, R5,
82 // Frame pointer, sometimes allocable
84 // Volatile, but not allocable