LLVM  10.0.0svn
MSP430Subtarget.cpp
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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"
16 
17 using namespace llvm;
18 
19 #define DEBUG_TYPE "msp430-subtarget"
20 
22 HWMultModeOption("mhwmult", cl::Hidden,
23  cl::desc("Hardware multiplier use mode for MSP430"),
25  cl::values(
27  "Do not use hardware multiplier"),
29  "Use 16-bit hardware multiplier"),
31  "Use 32-bit hardware multiplier"),
33  "Use F5 series hardware multiplier")));
34 
35 #define GET_SUBTARGETINFO_TARGET_DESC
36 #define GET_SUBTARGETINFO_CTOR
37 #include "MSP430GenSubtargetInfo.inc"
38 
39 void MSP430Subtarget::anchor() { }
40 
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 
53  HWMultMode = HWMultModeOption;
54 
55  return *this;
56 }
57 
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) {}
This class represents lattice values for constants.
Definition: AllocatorList.h:23
MSP430Subtarget & initializeSubtargetDependencies(StringRef CPU, StringRef FS)
initializer< Ty > init(const Ty &Val)
Definition: CommandLine.h:432
ValuesClass values(OptsTy... Options)
Helper to build a ValuesClass by forwarding a variable number of arguments as an initializer list to ...
Definition: CommandLine.h:652
static cl::opt< MSP430Subtarget::HWMultEnum > HWMultModeOption("mhwmult", cl::Hidden, cl::desc("Hardware multiplier use mode for MSP430"), cl::init(MSP430Subtarget::NoHWMult), cl::values(clEnumValN(MSP430Subtarget::NoHWMult, "none", "Do not use hardware multiplier"), clEnumValN(MSP430Subtarget::HWMult16, "16bit", "Use 16-bit hardware multiplier"), clEnumValN(MSP430Subtarget::HWMult32, "32bit", "Use 32-bit hardware multiplier"), clEnumValN(MSP430Subtarget::HWMultF5, "f5series", "Use F5 series hardware multiplier")))
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:43
#define clEnumValN(ENUMVAL, FLAGNAME, DESC)
Definition: CommandLine.h:627
MSP430Subtarget(const Triple &TT, const std::string &CPU, const std::string &FS, const TargetMachine &TM)
This constructor initializes the data members to match that of the specified triple.
Primary interface to the complete machine description for the target machine.
Definition: TargetMachine.h:65
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:48
void ParseSubtargetFeatures(StringRef CPU, StringRef FS)
ParseSubtargetFeatures - Parses features string setting specified subtarget options.