LLVM  12.0.0git
AVRSubtarget.cpp
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1 //===-- AVRSubtarget.cpp - AVR 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 AVR specific subclass of TargetSubtargetInfo.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "AVRSubtarget.h"
14 
15 #include "llvm/BinaryFormat/ELF.h"
17 
18 #include "AVR.h"
19 #include "AVRTargetMachine.h"
21 
22 #define DEBUG_TYPE "avr-subtarget"
23 
24 #define GET_SUBTARGETINFO_TARGET_DESC
25 #define GET_SUBTARGETINFO_CTOR
26 #include "AVRGenSubtargetInfo.inc"
27 
28 namespace llvm {
29 
30 AVRSubtarget::AVRSubtarget(const Triple &TT, const std::string &CPU,
31  const std::string &FS, const AVRTargetMachine &TM)
32  : AVRGenSubtargetInfo(TT, CPU, FS), ELFArch(0),
33 
34  // Subtarget features
35  m_hasSRAM(false), m_hasJMPCALL(false), m_hasIJMPCALL(false),
36  m_hasEIJMPCALL(false), m_hasADDSUBIW(false), m_hasSmallStack(false),
37  m_hasMOVW(false), m_hasLPM(false), m_hasLPMX(false), m_hasELPM(false),
38  m_hasELPMX(false), m_hasSPM(false), m_hasSPMX(false), m_hasDES(false),
39  m_supportsRMW(false), m_supportsMultiplication(false), m_hasBREAK(false),
40  m_hasTinyEncoding(false), m_hasMemMappedGPR(false),
41  m_FeatureSetDummy(false),
42 
43  InstrInfo(), FrameLowering(),
44  TLInfo(TM, initializeSubtargetDependencies(CPU, FS, TM)), TSInfo() {
45  // Parse features string.
46  ParseSubtargetFeatures(CPU, FS);
47 }
48 
51  const TargetMachine &TM) {
52  // Parse features string.
53  ParseSubtargetFeatures(CPU, FS);
54  return *this;
55 }
56 
57 } // end of namespace llvm
This class represents lattice values for constants.
Definition: AllocatorList.h:23
A generic AVR implementation.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS)
Parses a subtarget feature string, setting appropriate options.
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:45
uint16_t ELFArch
Definition: ELFStub.h:25
A specific AVR target MCU.
Definition: AVRSubtarget.h:31
AVRSubtarget & initializeSubtargetDependencies(StringRef CPU, StringRef FS, const TargetMachine &TM)
AVRSubtarget(const Triple &TT, const std::string &CPU, const std::string &FS, const AVRTargetMachine &TM)
Creates an AVR subtarget.
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:57