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 "MSP430.h"
15 #include "llvm/Support/TargetRegistry.h"
16
17 using namespace llvm;
18
19 #define DEBUG_TYPE "msp430-subtarget"
20
21 static cl::opt<MSP430Subtarget::HWMultEnum>
22 HWMultModeOption("mhwmult", cl::Hidden,
23 cl::desc("Hardware multiplier use mode for MSP430"),
24 cl::init(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
anchor()39 void MSP430Subtarget::anchor() { }
40
41 MSP430Subtarget &
initializeSubtargetDependencies(StringRef CPU,StringRef FS)42 MSP430Subtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
43 ExtendedInsts = false;
44 HWMultMode = NoHWMult;
45
46 std::string CPUName = CPU;
47 if (CPUName.empty())
48 CPUName = "msp430";
49
50 ParseSubtargetFeatures(CPUName, FS);
51
52 if (HWMultModeOption != NoHWMult)
53 HWMultMode = HWMultModeOption;
54
55 return *this;
56 }
57
MSP430Subtarget(const Triple & TT,const std::string & CPU,const std::string & FS,const TargetMachine & TM)58 MSP430Subtarget::MSP430Subtarget(const Triple &TT, const std::string &CPU,
59 const std::string &FS, const TargetMachine &TM)
60 : MSP430GenSubtargetInfo(TT, CPU, FS), FrameLowering(),
61 InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this) {}
62