1//===-- MSP430Subtarget.cpp - MSP430 Subtarget Information ----------------===//
2//
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
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the MSP430 specific subclass of TargetSubtargetInfo.
10//
11//===----------------------------------------------------------------------===//
12
13#include "MSP430Subtarget.h"
14#include "MSP430SelectionDAGInfo.h"
15#include "llvm/MC/TargetRegistry.h"
16
17using namespace llvm;
18
19#define DEBUG_TYPE "msp430-subtarget"
20
21static cl::opt<MSP430Subtarget::HWMultEnum>
22HWMultModeOption("mhwmult", cl::Hidden,
23 cl::desc("Hardware multiplier use mode for MSP430"),
24 cl::init(Val: MSP430Subtarget::NoHWMult),
25 cl::values(
26 clEnumValN(MSP430Subtarget::NoHWMult, "none",
27 "Do not use hardware multiplier"),
28 clEnumValN(MSP430Subtarget::HWMult16, "16bit",
29 "Use 16-bit hardware multiplier"),
30 clEnumValN(MSP430Subtarget::HWMult32, "32bit",
31 "Use 32-bit hardware multiplier"),
32 clEnumValN(MSP430Subtarget::HWMultF5, "f5series",
33 "Use F5 series hardware multiplier")));
34
35#define GET_SUBTARGETINFO_TARGET_DESC
36#define GET_SUBTARGETINFO_CTOR
37#include "MSP430GenSubtargetInfo.inc"
38
39void MSP430Subtarget::anchor() { }
40
41MSP430Subtarget &
42MSP430Subtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
43 ExtendedInsts = false;
44 HWMultMode = NoHWMult;
45
46 StringRef CPUName = CPU;
47 if (CPUName.empty())
48 CPUName = "msp430";
49
50 ParseSubtargetFeatures(CPU: CPUName, /*TuneCPU*/ CPUName, FS);
51
52 if (HWMultModeOption != NoHWMult)
53 HWMultMode = HWMultModeOption;
54
55 return *this;
56}
57
58MSP430Subtarget::MSP430Subtarget(const Triple &TT, const std::string &CPU,
59 const std::string &FS, const TargetMachine &TM)
60 : MSP430GenSubtargetInfo(TT, CPU, /*TuneCPU*/ CPU, FS),
61 InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
62 FrameLowering(*this) {
63 TSInfo = std::make_unique<MSP430SelectionDAGInfo>();
64}
65
66MSP430Subtarget::~MSP430Subtarget() = default;
67
68const SelectionDAGTargetInfo *MSP430Subtarget::getSelectionDAGInfo() const {
69 return TSInfo.get();
70}
71