1 //===-- MSP430Subtarget.cpp - MSP430 Subtarget Information ----------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the MSP430 specific subclass of TargetSubtargetInfo.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "MSP430Subtarget.h"
15 #include "MSP430.h"
16 #include "llvm/Support/TargetRegistry.h"
17
18 using namespace llvm;
19
20 #define DEBUG_TYPE "msp430-subtarget"
21
22 static cl::opt<MSP430Subtarget::HWMultEnum>
23 HWMultModeOption("mhwmult", cl::Hidden,
24 cl::desc("Hardware multiplier use mode for MSP430"),
25 cl::init(MSP430Subtarget::NoHWMult),
26 cl::values(
27 clEnumValN(MSP430Subtarget::NoHWMult, "none",
28 "Do not use hardware multiplier"),
29 clEnumValN(MSP430Subtarget::HWMult16, "16bit",
30 "Use 16-bit hardware multiplier"),
31 clEnumValN(MSP430Subtarget::HWMult32, "32bit",
32 "Use 32-bit hardware multiplier"),
33 clEnumValN(MSP430Subtarget::HWMultF5, "f5series",
34 "Use F5 series hardware multiplier")));
35
36 #define GET_SUBTARGETINFO_TARGET_DESC
37 #define GET_SUBTARGETINFO_CTOR
38 #include "MSP430GenSubtargetInfo.inc"
39
anchor()40 void MSP430Subtarget::anchor() { }
41
42 MSP430Subtarget &
initializeSubtargetDependencies(StringRef CPU,StringRef FS)43 MSP430Subtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
44 ExtendedInsts = false;
45 HWMultMode = NoHWMult;
46
47 std::string CPUName = CPU;
48 if (CPUName.empty())
49 CPUName = "msp430";
50
51 ParseSubtargetFeatures(CPUName, FS);
52
53 if (HWMultModeOption != NoHWMult)
54 HWMultMode = HWMultModeOption;
55
56 return *this;
57 }
58
MSP430Subtarget(const Triple & TT,const std::string & CPU,const std::string & FS,const TargetMachine & TM)59 MSP430Subtarget::MSP430Subtarget(const Triple &TT, const std::string &CPU,
60 const std::string &FS, const TargetMachine &TM)
61 : MSP430GenSubtargetInfo(TT, CPU, FS), FrameLowering(),
62 InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this) {}
63