1 //===- MSP430RegisterInfo.td - MSP430 Register defs ----------*- tblgen -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 //===----------------------------------------------------------------------===//
11 // Declarations that describe the MSP430 register file
12 //===----------------------------------------------------------------------===//
14 class MSP430Reg<bits<4> num, string n> : Register<n> {
15 field bits<4> Num = num;
16 let Namespace = "MSP430";
19 class MSP430RegWithSubregs<bits<4> num, string n, list<Register> subregs>
20 : RegisterWithSubRegs<n, subregs> {
21 field bits<4> Num = num;
22 let Namespace = "MSP430";
25 //===----------------------------------------------------------------------===//
27 //===----------------------------------------------------------------------===//
29 def PCB : MSP430Reg<0, "r0">;
30 def SPB : MSP430Reg<1, "r1">;
31 def SRB : MSP430Reg<2, "r2">;
32 def CGB : MSP430Reg<3, "r3">;
33 def FPB : MSP430Reg<4, "r4">;
34 def R5B : MSP430Reg<5, "r5">;
35 def R6B : MSP430Reg<6, "r6">;
36 def R7B : MSP430Reg<7, "r7">;
37 def R8B : MSP430Reg<8, "r8">;
38 def R9B : MSP430Reg<9, "r9">;
39 def R10B : MSP430Reg<10, "r10">;
40 def R11B : MSP430Reg<11, "r11">;
41 def R12B : MSP430Reg<12, "r12">;
42 def R13B : MSP430Reg<13, "r13">;
43 def R14B : MSP430Reg<14, "r14">;
44 def R15B : MSP430Reg<15, "r15">;
46 def PCW : MSP430RegWithSubregs<0, "r0", [PCB]>;
47 def SPW : MSP430RegWithSubregs<1, "r1", [SPB]>;
48 def SRW : MSP430RegWithSubregs<2, "r2", [SRB]>;
49 def CGW : MSP430RegWithSubregs<3, "r3", [CGB]>;
50 def FPW : MSP430RegWithSubregs<4, "r4", [FPB]>;
51 def R5W : MSP430RegWithSubregs<5, "r5", [R5B]>;
52 def R6W : MSP430RegWithSubregs<6, "r6", [R6B]>;
53 def R7W : MSP430RegWithSubregs<7, "r7", [R7B]>;
54 def R8W : MSP430RegWithSubregs<8, "r8", [R8B]>;
55 def R9W : MSP430RegWithSubregs<9, "r9", [R9B]>;
56 def R10W : MSP430RegWithSubregs<10, "r10", [R10B]>;
57 def R11W : MSP430RegWithSubregs<11, "r11", [R11B]>;
58 def R12W : MSP430RegWithSubregs<12, "r12", [R12B]>;
59 def R13W : MSP430RegWithSubregs<13, "r13", [R13B]>;
60 def R14W : MSP430RegWithSubregs<14, "r14", [R14B]>;
61 def R15W : MSP430RegWithSubregs<15, "r15", [R15B]>;
63 def : SubRegSet<1, [PCW, SPW, SRW, CGW, FPW,
64 R5W, R6W, R7W, R8W, R9W, R10W, R11W, R12W, R13W, R14W, R15W],
65 [PCB, SPB, SRB, CGB, FPB,
66 R5B, R6B, R7B, R8B, R9B, R10B, R11B, R12B, R13B, R14B, R15B]>;
68 def subreg_8bit : PatLeaf<(i32 1)>;
70 def GR8 : RegisterClass<"MSP430", [i8], 8,
72 [R12B, R13B, R14B, R15B, R11B, R10B, R9B, R8B, R7B, R6B, R5B,
73 // Frame pointer, sometimes allocable
75 // Volatile, but not allocable
79 iterator allocation_order_end(const MachineFunction &MF) const;
83 GR8Class::allocation_order_end(const MachineFunction &MF) const {
84 const TargetMachine &TM = MF.getTarget();
85 const TargetRegisterInfo *RI = TM.getRegisterInfo();
86 // Depending on whether the function uses frame pointer or not, last 5 or 4
87 // registers on the list above are reserved
96 def GR16 : RegisterClass<"MSP430", [i16], 16,
98 [R12W, R13W, R14W, R15W, R11W, R10W, R9W, R8W, R7W, R6W, R5W,
99 // Frame pointer, sometimes allocable
101 // Volatile, but not allocable
104 let SubRegClassList = [GR8];
105 let MethodProtos = [{
106 iterator allocation_order_end(const MachineFunction &MF) const;
108 let MethodBodies = [{
110 GR16Class::allocation_order_end(const MachineFunction &MF) const {
111 const TargetMachine &TM = MF.getTarget();
112 const TargetRegisterInfo *RI = TM.getRegisterInfo();
113 // Depending on whether the function uses frame pointer or not, last 5 or 4
114 // registers on the list above are reserved