Sink SubtargetFeature and TargetInstrItineraries (renamed MCInstrItineraries) into MC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134049 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 384 deletions

diff --git a/lib/Target/SubtargetFeature.cpp b/lib/Target/SubtargetFeature.cpp
deleted file mode 100644
index e0a9de8298..0000000000
--- a/lib/Target/SubtargetFeature.cpp
+++ /dev/null
@@ -1,384 +0,0 @@
-//===- SubtargetFeature.cpp - CPU characteristics Implementation ----------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the SubtargetFeature interface.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Target/SubtargetFeature.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/ADT/StringExtras.h"
-#include <algorithm>
-#include <cassert>
-#include <cctype>
-#include <cstdlib>
-using namespace llvm;
-
-//===----------------------------------------------------------------------===//
-//                          Static Helper Functions
-//===----------------------------------------------------------------------===//
-
-/// hasFlag - Determine if a feature has a flag; '+' or '-'
-///
-static inline bool hasFlag(const std::string &Feature) {
-  assert(!Feature.empty() && "Empty string");
-  // Get first character
-  char Ch = Feature[0];
-  // Check if first character is '+' or '-' flag
-  return Ch == '+' || Ch =='-';
-}
-
-/// StripFlag - Return string stripped of flag.
-///
-static inline std::string StripFlag(const std::string &Feature) {
-  return hasFlag(Feature) ? Feature.substr(1) : Feature;
-}
-
-/// isEnabled - Return true if enable flag; '+'.
-///
-static inline bool isEnabled(const std::string &Feature) {
-  assert(!Feature.empty() && "Empty string");
-  // Get first character
-  char Ch = Feature[0];
-  // Check if first character is '+' for enabled
-  return Ch == '+';
-}
-
-/// PrependFlag - Return a string with a prepended flag; '+' or '-'.
-///
-static inline std::string PrependFlag(const std::string &Feature,
-                                      bool IsEnabled) {
-  assert(!Feature.empty() && "Empty string");
-  if (hasFlag(Feature)) return Feature;
-  return std::string(IsEnabled ? "+" : "-") + Feature;
-}
-
-/// Split - Splits a string of comma separated items in to a vector of strings.
-///
-static void Split(std::vector<std::string> &V, const std::string &S) {
-  // Start at beginning of string.
-  size_t Pos = 0;
-  while (true) {
-    // Find the next comma
-    size_t Comma = S.find(',', Pos);
-    // If no comma found then the rest of the string is used
-    if (Comma == std::string::npos) {
-      // Add string to vector
-      V.push_back(S.substr(Pos));
-      break;
-    }
-    // Otherwise add substring to vector
-    V.push_back(S.substr(Pos, Comma - Pos));
-    // Advance to next item
-    Pos = Comma + 1;
-  }
-}
-
-/// Join a vector of strings to a string with a comma separating each element.
-///
-static std::string Join(const std::vector<std::string> &V) {
-  // Start with empty string.
-  std::string Result;
-  // If the vector is not empty 
-  if (!V.empty()) {
-    // Start with the CPU feature
-    Result = V[0];
-    // For each successive feature
-    for (size_t i = 1; i < V.size(); i++) {
-      // Add a comma
-      Result += ",";
-      // Add the feature
-      Result += V[i];
-    }
-  }
-  // Return the features string 
-  return Result;
-}
-
-/// Adding features.
-void SubtargetFeatures::AddFeature(const std::string &String,
-                                   bool IsEnabled) {
-  // Don't add empty features
-  if (!String.empty()) {
-    // Convert to lowercase, prepend flag and add to vector
-    Features.push_back(PrependFlag(LowercaseString(String), IsEnabled));
-  }
-}
-
-/// Find KV in array using binary search.
-template<typename T> const T *Find(const std::string &S, const T *A, size_t L) {
-  // Make the lower bound element we're looking for
-  T KV;
-  KV.Key = S.c_str();
-  // Determine the end of the array
-  const T *Hi = A + L;
-  // Binary search the array
-  const T *F = std::lower_bound(A, Hi, KV);
-  // If not found then return NULL
-  if (F == Hi || std::string(F->Key) != S) return NULL;
-  // Return the found array item
-  return F;
-}
-
-/// getLongestEntryLength - Return the length of the longest entry in the table.
-///
-static size_t getLongestEntryLength(const SubtargetFeatureKV *Table,
-                                    size_t Size) {
-  size_t MaxLen = 0;
-  for (size_t i = 0; i < Size; i++)
-    MaxLen = std::max(MaxLen, std::strlen(Table[i].Key));
-  return MaxLen;
-}
-
-/// Display help for feature choices.
-///
-static void Help(const SubtargetFeatureKV *CPUTable, size_t CPUTableSize,
-                 const SubtargetFeatureKV *FeatTable, size_t FeatTableSize) {
-  // Determine the length of the longest CPU and Feature entries.
-  unsigned MaxCPULen  = getLongestEntryLength(CPUTable, CPUTableSize);
-  unsigned MaxFeatLen = getLongestEntryLength(FeatTable, FeatTableSize);
-
-  // Print the CPU table.
-  errs() << "Available CPUs for this target:\n\n";
-  for (size_t i = 0; i != CPUTableSize; i++)
-    errs() << "  " << CPUTable[i].Key
-         << std::string(MaxCPULen - std::strlen(CPUTable[i].Key), ' ')
-         << " - " << CPUTable[i].Desc << ".\n";
-  errs() << "\n";
-  
-  // Print the Feature table.
-  errs() << "Available features for this target:\n\n";
-  for (size_t i = 0; i != FeatTableSize; i++)
-    errs() << "  " << FeatTable[i].Key
-         << std::string(MaxFeatLen - std::strlen(FeatTable[i].Key), ' ')
-         << " - " << FeatTable[i].Desc << ".\n";
-  errs() << "\n";
-  
-  errs() << "Use +feature to enable a feature, or -feature to disable it.\n"
-       << "For example, llc -mcpu=mycpu -mattr=+feature1,-feature2\n";
-  std::exit(1);
-}
-
-//===----------------------------------------------------------------------===//
-//                    SubtargetFeatures Implementation
-//===----------------------------------------------------------------------===//
-
-SubtargetFeatures::SubtargetFeatures(const std::string &Initial) {
-  // Break up string into separate features
-  Split(Features, Initial);
-}
-
-
-std::string SubtargetFeatures::getString() const {
-  return Join(Features);
-}
-void SubtargetFeatures::setString(const std::string &Initial) {
-  // Throw out old features
-  Features.clear();
-  // Break up string into separate features
-  Split(Features, LowercaseString(Initial));
-}
-
-
-/// setCPU - Set the CPU string.  Replaces previous setting.  Setting to ""
-/// clears CPU.
-void SubtargetFeatures::setCPU(const std::string &String) {
-  Features[0] = LowercaseString(String);
-}
-
-
-/// setCPUIfNone - Setting CPU string only if no string is set.
-///
-void SubtargetFeatures::setCPUIfNone(const std::string &String) {
-  if (Features[0].empty()) setCPU(String);
-}
-
-/// getCPU - Returns current CPU.
-///
-const std::string & SubtargetFeatures::getCPU() const {
-  return Features[0];
-}
-
-
-/// SetImpliedBits - For each feature that is (transitively) implied by this
-/// feature, set it.
-///
-static
-void SetImpliedBits(uint64_t &Bits, const SubtargetFeatureKV *FeatureEntry,
-                    const SubtargetFeatureKV *FeatureTable,
-                    size_t FeatureTableSize) {
-  for (size_t i = 0; i < FeatureTableSize; ++i) {
-    const SubtargetFeatureKV &FE = FeatureTable[i];
-
-    if (FeatureEntry->Value == FE.Value) continue;
-
-    if (FeatureEntry->Implies & FE.Value) {
-      Bits |= FE.Value;
-      SetImpliedBits(Bits, &FE, FeatureTable, FeatureTableSize);
-    }
-  }
-}
-
-/// ClearImpliedBits - For each feature that (transitively) implies this
-/// feature, clear it.
-/// 
-static
-void ClearImpliedBits(uint64_t &Bits, const SubtargetFeatureKV *FeatureEntry,
-                      const SubtargetFeatureKV *FeatureTable,
-                      size_t FeatureTableSize) {
-  for (size_t i = 0; i < FeatureTableSize; ++i) {
-    const SubtargetFeatureKV &FE = FeatureTable[i];
-
-    if (FeatureEntry->Value == FE.Value) continue;
-
-    if (FE.Implies & FeatureEntry->Value) {
-      Bits &= ~FE.Value;
-      ClearImpliedBits(Bits, &FE, FeatureTable, FeatureTableSize);
-    }
-  }
-}
-
-/// getBits - Get feature bits.
-///
-uint64_t SubtargetFeatures::getBits(const SubtargetFeatureKV *CPUTable,
-                                          size_t CPUTableSize,
-                                    const SubtargetFeatureKV *FeatureTable,
-                                          size_t FeatureTableSize) {
-  assert(CPUTable && "missing CPU table");
-  assert(FeatureTable && "missing features table");
-#ifndef NDEBUG
-  for (size_t i = 1; i < CPUTableSize; i++) {
-    assert(strcmp(CPUTable[i - 1].Key, CPUTable[i].Key) < 0 &&
-           "CPU table is not sorted");
-  }
-  for (size_t i = 1; i < FeatureTableSize; i++) {
-    assert(strcmp(FeatureTable[i - 1].Key, FeatureTable[i].Key) < 0 &&
-          "CPU features table is not sorted");
-  }
-#endif
-  uint64_t Bits = 0;                    // Resulting bits
-
-  // Check if help is needed
-  if (Features[0] == "help")
-    Help(CPUTable, CPUTableSize, FeatureTable, FeatureTableSize);
-  
-  // Find CPU entry
-  const SubtargetFeatureKV *CPUEntry =
-                            Find(Features[0], CPUTable, CPUTableSize);
-  // If there is a match
-  if (CPUEntry) {
-    // Set base feature bits
-    Bits = CPUEntry->Value;
-
-    // Set the feature implied by this CPU feature, if any.
-    for (size_t i = 0; i < FeatureTableSize; ++i) {
-      const SubtargetFeatureKV &FE = FeatureTable[i];
-      if (CPUEntry->Value & FE.Value)
-        SetImpliedBits(Bits, &FE, FeatureTable, FeatureTableSize);
-    }
-  } else {
-    errs() << "'" << Features[0]
-           << "' is not a recognized processor for this target"
-           << " (ignoring processor)\n";
-  }
-  // Iterate through each feature
-  for (size_t i = 1; i < Features.size(); i++) {
-    const std::string &Feature = Features[i];
-    
-    // Check for help
-    if (Feature == "+help")
-      Help(CPUTable, CPUTableSize, FeatureTable, FeatureTableSize);
-    
-    // Find feature in table.
-    const SubtargetFeatureKV *FeatureEntry =
-                       Find(StripFlag(Feature), FeatureTable, FeatureTableSize);
-    // If there is a match
-    if (FeatureEntry) {
-      // Enable/disable feature in bits
-      if (isEnabled(Feature)) {
-        Bits |=  FeatureEntry->Value;
-
-        // For each feature that this implies, set it.
-        SetImpliedBits(Bits, FeatureEntry, FeatureTable, FeatureTableSize);
-      } else {
-        Bits &= ~FeatureEntry->Value;
-
-        // For each feature that implies this, clear it.
-        ClearImpliedBits(Bits, FeatureEntry, FeatureTable, FeatureTableSize);
-      }
-    } else {
-      errs() << "'" << Feature
-             << "' is not a recognized feature for this target"
-             << " (ignoring feature)\n";
-    }
-  }
-
-  return Bits;
-}
-
-/// Get info pointer
-void *SubtargetFeatures::getInfo(const SubtargetInfoKV *Table,
-                                       size_t TableSize) {
-  assert(Table && "missing table");
-#ifndef NDEBUG
-  for (size_t i = 1; i < TableSize; i++) {
-    assert(strcmp(Table[i - 1].Key, Table[i].Key) < 0 && "Table is not sorted");
-  }
-#endif
-
-  // Find entry
-  const SubtargetInfoKV *Entry = Find(Features[0], Table, TableSize);
-  
-  if (Entry) {
-    return Entry->Value;
-  } else {
-    errs() << "'" << Features[0]
-           << "' is not a recognized processor for this target"
-           << " (ignoring processor)\n";
-    return NULL;
-  }
-}
-
-/// print - Print feature string.
-///
-void SubtargetFeatures::print(raw_ostream &OS) const {
-  for (size_t i = 0, e = Features.size(); i != e; ++i)
-    OS << Features[i] << "  ";
-  OS << "\n";
-}
-
-/// dump - Dump feature info.
-///
-void SubtargetFeatures::dump() const {
-  print(dbgs());
-}
-
-/// getDefaultSubtargetFeatures - Return a string listing the features
-/// associated with the target triple.
-///
-/// FIXME: This is an inelegant way of specifying the features of a
-/// subtarget. It would be better if we could encode this information
-/// into the IR. See <rdar://5972456>.
-///
-void SubtargetFeatures::getDefaultSubtargetFeatures(const std::string &CPU,
-                                                    const Triple& Triple) {
-  setCPU(CPU);
-
-  if (Triple.getVendor() == Triple::Apple) {
-    if (Triple.getArch() == Triple::ppc) {
-      // powerpc-apple-*
-      AddFeature("altivec");
-    } else if (Triple.getArch() == Triple::ppc64) {
-      // powerpc64-apple-*
-      AddFeature("64bit");
-      AddFeature("altivec");
-    }
-  }
-}