llvm/lib/Target/VE/VESubtarget.cpp

   1 //===-- VESubtarget.cpp - VE 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 VE specific subclass of TargetSubtargetInfo.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "VESubtarget.h"
  14 #include "VE.h"
  15 #include "llvm/Support/MathExtras.h"
  16 #include "llvm/Support/TargetRegistry.h"
  17
  18 using namespace llvm;
  19
  20 #define DEBUG_TYPE "ve-subtarget"
  21
  22 #define GET_SUBTARGETINFO_TARGET_DESC
  23 #define GET_SUBTARGETINFO_CTOR
  24 #include "VEGenSubtargetInfo.inc"
  25
  26 void VESubtarget::anchor() {}
  27
  28 VESubtarget &VESubtarget::initializeSubtargetDependencies(StringRef CPU,
  29                                                           StringRef FS) {
  30   // Default feature settings
  31   EnableVPU = false;
  32
  33   // Determine default and user specified characteristics
  34   std::string CPUName = std::string(CPU);
  35   if (CPUName.empty())
  36     CPUName = "generic";
  37
  38   // Parse features string.
  39   ParseSubtargetFeatures(CPUName, /*TuneCPU=*/CPU, FS);
  40
  41   return *this;
  42 }
  43
  44 VESubtarget::VESubtarget(const Triple &TT, const std::string &CPU,
  45                          const std::string &FS, const TargetMachine &TM)
  46     : VEGenSubtargetInfo(TT, CPU, /*TuneCPU=*/CPU, FS), TargetTriple(TT),
  47       InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
  48       FrameLowering(*this) {}
  49
  50 uint64_t VESubtarget::getAdjustedFrameSize(uint64_t FrameSize) const {
  51   // Calculate adjusted frame size by adding the size of RSA frame,
  52   // return address, and frame poitner as described in VEFrameLowering.cpp.
  53   const VEFrameLowering *TFL = getFrameLowering();
  54
  55   FrameSize += getRsaSize();
  56   FrameSize = alignTo(FrameSize, TFL->getStackAlign());
  57
  58   return FrameSize;
  59 }
  60
  61 bool VESubtarget::enableMachineScheduler() const { return true; }