llvm/lib/Target/Xtensa/XtensaSubtarget.cpp

   1 //===- XtensaSubtarget.cpp - Xtensa 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 Xtensa specific subclass of TargetSubtargetInfo.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "XtensaSubtarget.h"
  14 #include "llvm/IR/GlobalValue.h"
  15 #include "llvm/Support/Debug.h"
  16
  17 #define DEBUG_TYPE "xtensa-subtarget"
  18
  19 #define GET_SUBTARGETINFO_TARGET_DESC
  20 #define GET_SUBTARGETINFO_CTOR
  21 #include "XtensaGenSubtargetInfo.inc"
  22
  23 using namespace llvm;
  24
  25 XtensaSubtarget &
  26 XtensaSubtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
  27   StringRef CPUName = CPU;
  28   if (CPUName.empty()) {
  29     // set default cpu name
  30     CPUName = "generic";
  31   }
  32
  33   HasDensity = false;
  34
  35   // Parse features string.
  36   ParseSubtargetFeatures(CPUName, CPUName, FS);
  37   return *this;
  38 }
  39
  40 XtensaSubtarget::XtensaSubtarget(const Triple &TT, StringRef CPU, StringRef FS,
  41                                  const TargetMachine &TM)
  42     : XtensaGenSubtargetInfo(TT, CPU, /*TuneCPU=*/CPU, FS), TargetTriple(TT),
  43       InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
  44       TSInfo(), FrameLowering(*this) {}