let Namespace = "MSP430";
}
+class MSP430RegWithSubregs<bits<4> num, string n, list<Register> subregs>
+ : RegisterWithSubRegs<n, subregs> {
+ field bits<4> Num = num;
+ let Namespace = "MSP430";
+}
+
//===----------------------------------------------------------------------===//
// Registers
//===----------------------------------------------------------------------===//
-def PC : MSP430Reg<0, "PC">;
-def SP : MSP430Reg<1, "SP">;
-def SR : MSP430Reg<2, "SR">;
-def CG : MSP430Reg<3, "CG">;
-def R4 : MSP430Reg<4, "R4">;
-def R5 : MSP430Reg<5, "R5">;
-def R6 : MSP430Reg<6, "R6">;
-def R7 : MSP430Reg<7, "R7">;
-def R8 : MSP430Reg<8, "R8">;
-def R9 : MSP430Reg<9, "R9">;
-def R10 : MSP430Reg<10, "R10">;
-def R11 : MSP430Reg<11, "R11">;
-def R12 : MSP430Reg<12, "R12">;
-def R13 : MSP430Reg<13, "R13">;
-def R14 : MSP430Reg<14, "R14">;
-def R15 : MSP430Reg<15, "R15">;
-
-def MSP430Regs : RegisterClass<"MSP430", [i16], 16,
- // Volatile registers
- [R4, R5, R6, R7, R8, R9, R9, R10, R11, R12, R13, R14, R15,
- // Volatile, but not allocable
- PC, SP, SR, CG]>
+def PCB : MSP430Reg<0, "r0">;
+def SPB : MSP430Reg<1, "r1">;
+def SRB : MSP430Reg<2, "r2">;
+def CGB : MSP430Reg<3, "r3">;
+def FPB : MSP430Reg<4, "r4">;
+def R5B : MSP430Reg<5, "r5">;
+def R6B : MSP430Reg<6, "r6">;
+def R7B : MSP430Reg<7, "r7">;
+def R8B : MSP430Reg<8, "r8">;
+def R9B : MSP430Reg<9, "r9">;
+def R10B : MSP430Reg<10, "r10">;
+def R11B : MSP430Reg<11, "r11">;
+def R12B : MSP430Reg<12, "r12">;
+def R13B : MSP430Reg<13, "r13">;
+def R14B : MSP430Reg<14, "r14">;
+def R15B : MSP430Reg<15, "r15">;
+
+def PCW : MSP430RegWithSubregs<0, "r0", [PCB]>;
+def SPW : MSP430RegWithSubregs<1, "r1", [SPB]>;
+def SRW : MSP430RegWithSubregs<2, "r2", [SRB]>;
+def CGW : MSP430RegWithSubregs<3, "r3", [CGB]>;
+def FPW : MSP430RegWithSubregs<4, "r4", [FPB]>;
+def R5W : MSP430RegWithSubregs<5, "r5", [R5B]>;
+def R6W : MSP430RegWithSubregs<6, "r6", [R6B]>;
+def R7W : MSP430RegWithSubregs<7, "r7", [R7B]>;
+def R8W : MSP430RegWithSubregs<8, "r8", [R8B]>;
+def R9W : MSP430RegWithSubregs<9, "r9", [R9B]>;
+def R10W : MSP430RegWithSubregs<10, "r10", [R10B]>;
+def R11W : MSP430RegWithSubregs<11, "r11", [R11B]>;
+def R12W : MSP430RegWithSubregs<12, "r12", [R12B]>;
+def R13W : MSP430RegWithSubregs<13, "r13", [R13B]>;
+def R14W : MSP430RegWithSubregs<14, "r14", [R14B]>;
+def R15W : MSP430RegWithSubregs<15, "r15", [R15B]>;
+
+def : SubRegSet<1, [PCW, SPW, SRW, CGW, FPW,
+ R5W, R6W, R7W, R8W, R9W, R10W, R11W, R12W, R13W, R14W, R15W],
+ [PCB, SPB, SRB, CGB, FPB,
+ R5B, R6B, R7B, R8B, R9B, R10B, R11B, R12B, R13B, R14B, R15B]>;
+
+def subreg_8bit : PatLeaf<(i32 1)>;
+
+def GR8 : RegisterClass<"MSP430", [i8], 8,
+ // Volatile registers
+ [R12B, R13B, R14B, R15B, R11B, R10B, R9B, R8B, R7B, R6B, R5B,
+ // Frame pointer, sometimes allocable
+ FPB,
+ // Volatile, but not allocable
+ PCB, SPB, SRB, CGB]>
+{
+ let MethodProtos = [{
+ iterator allocation_order_end(const MachineFunction &MF) const;
+ }];
+ let MethodBodies = [{
+ GR8Class::iterator
+ GR8Class::allocation_order_end(const MachineFunction &MF) const {
+ const TargetMachine &TM = MF.getTarget();
+ const TargetRegisterInfo *RI = TM.getRegisterInfo();
+ // Depending on whether the function uses frame pointer or not, last 5 or 4
+ // registers on the list above are reserved
+ if (RI->hasFP(MF))
+ return end()-5;
+ else
+ return end()-4;
+ }
+ }];
+}
+
+def GR16 : RegisterClass<"MSP430", [i16], 16,
+ // Volatile registers
+ [R12W, R13W, R14W, R15W, R11W, R10W, R9W, R8W, R7W, R6W, R5W,
+ // Frame pointer, sometimes allocable
+ FPW,
+ // Volatile, but not allocable
+ PCW, SPW, SRW, CGW]>
{
+ let SubRegClassList = [GR8];
let MethodProtos = [{
iterator allocation_order_end(const MachineFunction &MF) const;
}];
let MethodBodies = [{
- MSP430RegsClass::iterator
- MSP430RegsClass::allocation_order_end(const MachineFunction &MF) const {
- // The last 4 registers on the list above are reserved
- return end()-4;
+ GR16Class::iterator
+ GR16Class::allocation_order_end(const MachineFunction &MF) const {
+ const TargetMachine &TM = MF.getTarget();
+ const TargetRegisterInfo *RI = TM.getRegisterInfo();
+ // Depending on whether the function uses frame pointer or not, last 5 or 4
+ // registers on the list above are reserved
+ if (RI->hasFP(MF))
+ return end()-5;
+ else
+ return end()-4;
}
}];
}