Move support/lib into lib/Support

Move support/tools into utils


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8878 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 482 deletions

diff --git a/support/tools/TableGen/TableGen.cpp b/support/tools/TableGen/TableGen.cpp
deleted file mode 100644
index 971ac9081a..0000000000
--- a/support/tools/TableGen/TableGen.cpp
+++ /dev/null
@@ -1,482 +0,0 @@
-//===- TableGen.cpp - Top-Level TableGen implementation -------------------===//
-//
-// TableGen is a tool which can be used to build up a description of something,
-// then invoke one or more "tablegen backends" to emit information about the
-// description in some predefined format.  In practice, this is used by the LLVM
-// code generators to automate generation of a code generator through a
-// high-level description of the target.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Record.h"
-#include "Support/CommandLine.h"
-#include "Support/Signals.h"
-#include "Support/FileUtilities.h"
-#include "CodeEmitterGen.h"
-#include "RegisterInfoEmitter.h"
-#include "InstrInfoEmitter.h"
-#include "InstrSelectorEmitter.h"
-#include <algorithm>
-#include <cstdio>
-#include <fstream>
-
-enum ActionType {
-  PrintRecords,
-  GenEmitter,
-  GenRegisterEnums, GenRegister, GenRegisterHeader,
-  GenInstrEnums, GenInstrs, GenInstrSelector,
-  PrintEnums,
-  Parse,
-};
-
-namespace {
-  cl::opt<ActionType>
-  Action(cl::desc("Action to perform:"),
-         cl::values(clEnumValN(PrintRecords, "print-records",
-                               "Print all records to stdout (default)"),
-                    clEnumValN(GenEmitter, "gen-emitter",
-                               "Generate machine code emitter"),
-                    clEnumValN(GenRegisterEnums, "gen-register-enums",
-                               "Generate enum values for registers"),
-                    clEnumValN(GenRegister, "gen-register-desc",
-                               "Generate a register info description"),
-                    clEnumValN(GenRegisterHeader, "gen-register-desc-header",
-                               "Generate a register info description header"),
-                    clEnumValN(GenInstrEnums, "gen-instr-enums",
-                               "Generate enum values for instructions"),
-                    clEnumValN(GenInstrs, "gen-instr-desc",
-                               "Generate instruction descriptions"),
-                    clEnumValN(GenInstrSelector, "gen-instr-selector",
-                               "Generate an instruction selector"),
-                    clEnumValN(PrintEnums, "print-enums",
-                               "Print enum values for a class"),
-                    clEnumValN(Parse, "parse",
-                               "Interpret machine code (testing only)"),
-                    0));
-
-  cl::opt<std::string>
-  Class("class", cl::desc("Print Enum list for this class"),
-        cl::value_desc("class name"));
-
-  cl::opt<std::string>
-  OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
-                 cl::init("-"));
-
-  cl::opt<std::string>
-  InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
-
-  cl::opt<std::string>
-  IncludeDir("I", cl::desc("Directory of include files"),
-                  cl::value_desc("directory"), cl::init(""));
-}
-
-
-void ParseFile(const std::string &Filename, const std::string & IncludeDir);
-
-RecordKeeper Records;
-
-static Init *getBit(Record *R, unsigned BitNo) {
-  const std::vector<RecordVal> &V = R->getValues();
-  for (unsigned i = 0, e = V.size(); i != e; ++i)
-    if (V[i].getPrefix()) {
-      assert(dynamic_cast<BitsInit*>(V[i].getValue()) &&
-	     "Can only handle fields of bits<> type!");
-      BitsInit *I = (BitsInit*)V[i].getValue();
-      if (BitNo < I->getNumBits())
-	return I->getBit(BitNo);
-      BitNo -= I->getNumBits();
-    }
-
-  std::cerr << "Cannot find requested bit!\n";
-  abort();
-  return 0;
-}
-
-static unsigned getNumBits(Record *R) {
-  const std::vector<RecordVal> &V = R->getValues();
-  unsigned Num = 0;
-  for (unsigned i = 0, e = V.size(); i != e; ++i)
-    if (V[i].getPrefix()) {
-      assert(dynamic_cast<BitsInit*>(V[i].getValue()) &&
-	     "Can only handle fields of bits<> type!");
-      Num += ((BitsInit*)V[i].getValue())->getNumBits();
-    }
-  return Num;
-}
-
-static bool BitsAreFixed(Record *I1, Record *I2, unsigned BitNo) {
-  return dynamic_cast<BitInit*>(getBit(I1, BitNo)) &&
-         dynamic_cast<BitInit*>(getBit(I2, BitNo));
-}
-
-static bool BitsAreEqual(Record *I1, Record *I2, unsigned BitNo) {
-  BitInit *Bit1 = dynamic_cast<BitInit*>(getBit(I1, BitNo));
-  BitInit *Bit2 = dynamic_cast<BitInit*>(getBit(I2, BitNo));
-
-  return Bit1 && Bit2 && Bit1->getValue() == Bit2->getValue();
-}
-
-static bool BitRangesEqual(Record *I1, Record *I2,
-			   unsigned Start, unsigned End) {
-  for (unsigned i = Start; i != End; ++i)
-    if (!BitsAreEqual(I1, I2, i))
-      return false;
-  return true;
-}
-
-static unsigned getFirstFixedBit(Record *R, unsigned FirstFixedBit) {
-  // Look for the first bit of the pair that are required to be 0 or 1.
-  while (!dynamic_cast<BitInit*>(getBit(R, FirstFixedBit)))
-    ++FirstFixedBit;
-  return FirstFixedBit;
-}
-
-static void FindInstDifferences(Record *I1, Record *I2,
-				unsigned FirstFixedBit, unsigned MaxBits,
-				unsigned &FirstVaryingBitOverall,
-				unsigned &LastFixedBitOverall) {
-  // Compare the first instruction to the rest of the instructions, looking for
-  // fields that differ.
-  //
-  unsigned FirstVaryingBit = FirstFixedBit;
-  while (FirstVaryingBit < MaxBits && BitsAreEqual(I1, I2, FirstVaryingBit))
-    ++FirstVaryingBit;
-
-  unsigned LastFixedBit = FirstVaryingBit;
-  while (LastFixedBit < MaxBits && BitsAreFixed(I1, I2, LastFixedBit))
-    ++LastFixedBit;
-  
-  if (FirstVaryingBit < FirstVaryingBitOverall)
-    FirstVaryingBitOverall = FirstVaryingBit;
-  if (LastFixedBit < LastFixedBitOverall)
-    LastFixedBitOverall = LastFixedBit;
-}
-
-static bool getBitValue(Record *R, unsigned BitNo) {
-  Init *I = getBit(R, BitNo);
-  assert(dynamic_cast<BitInit*>(I) && "Bit should be fixed!");
-  return ((BitInit*)I)->getValue();
-}
-
-struct BitComparator {
-  unsigned BitBegin, BitEnd;
-  BitComparator(unsigned B, unsigned E) : BitBegin(B), BitEnd(E) {}
-
-  bool operator()(Record *R1, Record *R2) { // Return true if R1 is less than R2
-    for (unsigned i = BitBegin; i != BitEnd; ++i) {
-      bool V1 = getBitValue(R1, i), V2 = getBitValue(R2, i);
-      if (V1 < V2)
-	return true;
-      else if (V2 < V1)
-	return false;
-    }
-    return false;
-  }
-};
-
-static void PrintRange(std::vector<Record*>::iterator I, 
-		       std::vector<Record*>::iterator E) {
-  while (I != E) std::cerr << **I++;
-}
-
-static bool getMemoryBit(unsigned char *M, unsigned i) {
-  return (M[i/8] & (1 << (i&7))) != 0;
-}
-
-static unsigned getFirstFixedBitInSequence(std::vector<Record*>::iterator IB,
-					   std::vector<Record*>::iterator IE,
-					   unsigned StartBit) {
-  unsigned FirstFixedBit = 0;
-  for (std::vector<Record*>::iterator I = IB; I != IE; ++I)
-    FirstFixedBit = std::max(FirstFixedBit, getFirstFixedBit(*I, StartBit));
-  return FirstFixedBit;
-}
-
-// ParseMachineCode - Try to split the vector of instructions (which is
-// intentionally taken by-copy) in half, narrowing down the possible
-// instructions that we may have found.  Eventually, this list will get pared
-// down to zero or one instruction, in which case we have a match or failure.
-//
-static Record *ParseMachineCode(std::vector<Record*>::iterator InstsB, 
-				std::vector<Record*>::iterator InstsE,
-				unsigned char *M) {
-  assert(InstsB != InstsE && "Empty range?");
-  if (InstsB+1 == InstsE) {
-    // Only a single instruction, see if we match it...
-    Record *Inst = *InstsB;
-    for (unsigned i = 0, e = getNumBits(Inst); i != e; ++i)
-      if (BitInit *BI = dynamic_cast<BitInit*>(getBit(Inst, i)))
-	if (getMemoryBit(M, i) != BI->getValue())
-	  throw std::string("Parse failed!\n");
-    return Inst;
-  }
-
-  unsigned MaxBits = ~0;
-  for (std::vector<Record*>::iterator I = InstsB; I != InstsE; ++I)
-    MaxBits = std::min(MaxBits, getNumBits(*I));
-
-  unsigned FirstFixedBit = getFirstFixedBitInSequence(InstsB, InstsE, 0);
-  unsigned FirstVaryingBit, LastFixedBit;
-  do {
-    FirstVaryingBit = ~0;
-    LastFixedBit = ~0;
-    for (std::vector<Record*>::iterator I = InstsB+1; I != InstsE; ++I)
-      FindInstDifferences(*InstsB, *I, FirstFixedBit, MaxBits,
-			  FirstVaryingBit, LastFixedBit);
-    if (FirstVaryingBit == MaxBits) {
-      std::cerr << "ERROR: Could not find bit to distinguish between "
-		<< "the following entries!\n";
-      PrintRange(InstsB, InstsE);
-    }
-
-#if 0
-    std::cerr << "FVB: " << FirstVaryingBit << " - " << LastFixedBit
-	      << ": " << InstsE-InstsB << "\n";
-#endif
-
-    FirstFixedBit = getFirstFixedBitInSequence(InstsB, InstsE, FirstVaryingBit);
-  } while (FirstVaryingBit != FirstFixedBit);
-
-  //std::cerr << "\n\nXXXXXXXXXXXXXXXXX\n\n";
-  //PrintRange(InstsB, InstsE);
-
-  // Sort the Insts list so that the entries have all of the bits in the range
-  // [FirstVaryingBit,LastFixedBit) sorted.  These bits are all guaranteed to be
-  // set to either 0 or 1 (BitInit values), which simplifies things.
-  //
-  std::sort(InstsB, InstsE, BitComparator(FirstVaryingBit, LastFixedBit));
-
-  // Once the list is sorted by these bits, split the bit list into smaller
-  // lists, and recurse on each one.
-  //
-  std::vector<Record*>::iterator RangeBegin = InstsB;
-  Record *Match = 0;
-  while (RangeBegin != InstsE) {
-    std::vector<Record*>::iterator RangeEnd = RangeBegin+1;
-    while (RangeEnd != InstsE &&
-          BitRangesEqual(*RangeBegin, *RangeEnd, FirstVaryingBit, LastFixedBit))
-      ++RangeEnd;
-    
-    // We just identified a range of equal instructions.  If this range is the
-    // input range, we were not able to distinguish between the instructions in
-    // the set.  Print an error and exit!
-    //
-    if (RangeBegin == InstsB && RangeEnd == InstsE) {
-      std::cerr << "Error: Could not distinguish among the following insts!:\n";
-      PrintRange(InstsB, InstsE);
-      abort();
-    }
-    
-#if 0
-    std::cerr << "FVB: " << FirstVaryingBit << " - " << LastFixedBit
-	      << ": [" << RangeEnd-RangeBegin << "] - ";
-    for (int i = LastFixedBit-1; i >= (int)FirstVaryingBit; --i)
-      std::cerr << (int)((BitInit*)getBit(*RangeBegin, i))->getValue() << " ";
-    std::cerr << "\n";
-#endif
-
-    if (Record *R = ParseMachineCode(RangeBegin, RangeEnd, M)) {
-      if (Match) {
-	std::cerr << "Error: Multiple matches found:\n";
-	PrintRange(InstsB, InstsE);
-      }
-
-      assert(Match == 0 && "Multiple matches??");
-      Match = R;
-    }
-    RangeBegin = RangeEnd;
-  }
-
-  return Match;
-}
-
-static void PrintValue(Record *I, unsigned char *Ptr, const RecordVal &Val) {
-  assert(dynamic_cast<BitsInit*>(Val.getValue()) &&
-	 "Can only handle undefined bits<> types!");
-  BitsInit *BI = (BitsInit*)Val.getValue();
-  assert(BI->getNumBits() <= 32 && "Can only handle fields up to 32 bits!");
-
-  unsigned Value = 0;
-  const std::vector<RecordVal> &Vals = I->getValues();
-
-  // Start by filling in fixed values...
-  for (unsigned i = 0, e = BI->getNumBits(); i != e; ++i)
-    if (BitInit *B = dynamic_cast<BitInit*>(BI->getBit(i)))
-      Value |= B->getValue() << i;
-  
-  // Loop over all of the fields in the instruction adding in any
-  // contributions to this value (due to bit references).
-  //
-  unsigned Offset = 0;
-  for (unsigned f = 0, e = Vals.size(); f != e; ++f)
-    if (Vals[f].getPrefix()) {
-      BitsInit *FieldInitializer = (BitsInit*)Vals[f].getValue();
-      if (&Vals[f] == &Val) {
-	// Read the bits directly now...
-	for (unsigned i = 0, e = BI->getNumBits(); i != e; ++i)
-	  Value |= getMemoryBit(Ptr, Offset+i) << i;
-	break;
-      }
-      
-      // Scan through the field looking for bit initializers of the current
-      // variable...
-      for (unsigned i = 0, e = FieldInitializer->getNumBits(); i != e; ++i)
-	if (VarBitInit *VBI =
-	    dynamic_cast<VarBitInit*>(FieldInitializer->getBit(i))) {
-          TypedInit *TI = VBI->getVariable();
-          if (VarInit *VI = dynamic_cast<VarInit*>(TI)) {
-            if (VI->getName() == Val.getName())
-              Value |= getMemoryBit(Ptr, Offset+i) << VBI->getBitNum();
-          } else if (FieldInit *FI = dynamic_cast<FieldInit*>(TI)) {
-            // FIXME: implement this!
-            std::cerr << "FIELD INIT not implemented yet!\n";
-          }
-	}	
-      Offset += FieldInitializer->getNumBits();
-    }
-
-  std::cout << "0x" << std::hex << Value << std::dec;
-}
-
-static void PrintInstruction(Record *I, unsigned char *Ptr) {
-  std::cout << "Inst " << getNumBits(I)/8 << " bytes: "
-	    << "\t" << I->getName() << "\t" << *I->getValue("Name")->getValue()
-	    << "\t";
-  
-  const std::vector<RecordVal> &Vals = I->getValues();
-  for (unsigned i = 0, e = Vals.size(); i != e; ++i)
-    if (!Vals[i].getValue()->isComplete()) {
-      std::cout << Vals[i].getName() << "=";
-      PrintValue(I, Ptr, Vals[i]);
-      std::cout << "\t";
-    }
-  
-  std::cout << "\n";// << *I;
-}
-
-static void ParseMachineCode() {
-  // X86 code
-  unsigned char Buffer[] = {
-                             0x55,             // push EBP
-			     0x89, 0xE5,       // mov EBP, ESP
-			     //0x83, 0xEC, 0x08, // sub ESP, 0x8
-			     0xE8, 1, 2, 3, 4, // call +0x04030201
-			     0x89, 0xEC,       // mov ESP, EBP
-			     0x5D,             // pop EBP
-			     0xC3,             // ret
-			     0x90,             // nop
-			     0xC9,             // leave
-			     0x89, 0xF6,       // mov ESI, ESI
-			     0x68, 1, 2, 3, 4, // push 0x04030201
-			     0x5e,             // pop ESI
-			     0xFF, 0xD0,       // call EAX
-			     0xB8, 1, 2, 3, 4, // mov EAX, 0x04030201
-			     0x85, 0xC0,       // test EAX, EAX
-			     0xF4,             // hlt
-  };
-
-#if 0
-  // SparcV9 code
-  unsigned char Buffer[] = { 0xbf, 0xe0, 0x20, 0x1f, 0x1, 0x0, 0x0, 0x1, 
-                             0x0, 0x0, 0x0, 0x0, 0xc1, 0x0, 0x20, 0x1, 0x1,
-                             0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-                             0x0, 0x0, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0, 0x1,
-                             0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-                             0x0, 0x0, 0xaf, 0xe8, 0x20, 0x17
-  };
-#endif
-
-  std::vector<Record*> Insts = Records.getAllDerivedDefinitions("Instruction");
-
-  unsigned char *BuffPtr = Buffer;
-  while (1) {
-    Record *R = ParseMachineCode(Insts.begin(), Insts.end(), BuffPtr);
-    PrintInstruction(R, BuffPtr);
-
-    unsigned Bits = getNumBits(R);
-    assert((Bits & 7) == 0 && "Instruction is not an even number of bytes!");
-    BuffPtr += Bits/8;
-  }
-}
-
-
-int main(int argc, char **argv) {
-  cl::ParseCommandLineOptions(argc, argv);
-  ParseFile(InputFilename, IncludeDir);
-
-  std::ostream *Out = &std::cout;
-  if (OutputFilename != "-") {
-    // Output to a .tmp file, because we don't actually want to overwrite the
-    // output file unless the generated file is different or the specified file
-    // does not exist.
-    Out = new std::ofstream((OutputFilename+".tmp").c_str());
-
-    if (!Out->good()) {
-      std::cerr << argv[0] << ": error opening " << OutputFilename << ".tmp!\n";
-      return 1;
-    }
-
-    // Make sure the file gets removed if *gasp* tablegen crashes...
-    RemoveFileOnSignal(OutputFilename+".tmp");
-  }
-
-  try {
-    switch (Action) {
-    case PrintRecords:
-      *Out << Records;           // No argument, dump all contents
-      break;
-    case Parse:
-      ParseMachineCode();
-      break;
-    case GenEmitter:
-      CodeEmitterGen(Records).run(*Out);
-      break;
-
-    case GenRegisterEnums:
-      RegisterInfoEmitter(Records).runEnums(*Out);
-      break;
-    case GenRegister:
-      RegisterInfoEmitter(Records).run(*Out);
-      break;
-    case GenRegisterHeader:
-      RegisterInfoEmitter(Records).runHeader(*Out);
-      break;
-
-    case GenInstrEnums:
-      InstrInfoEmitter(Records).runEnums(*Out);
-      break;
-    case GenInstrs:
-      InstrInfoEmitter(Records).run(*Out);
-      break;
-    case GenInstrSelector:
-      InstrSelectorEmitter(Records).run(*Out);
-      break;
-    case PrintEnums:
-      std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
-      for (unsigned i = 0, e = Recs.size(); i != e; ++i)
-        *Out << Recs[i] << ", ";
-      *Out << "\n";
-      break;
-    }
-  } catch (const std::string &Error) {
-    std::cerr << Error << "\n";
-    if (Out != &std::cout) {
-      delete Out;                             // Close the file
-      std::remove(OutputFilename.c_str());    // Remove the file, it's broken
-    }
-    return 1;
-  }
-
-  if (Out != &std::cout) {
-    delete Out;                               // Close the file
-    
-    // Now that we have generated the result, check to see if we either don't
-    // have the requested file, or if the requested file is different than the
-    // file we generated.  If so, move the generated file over the requested
-    // file.  Otherwise, just remove the file we just generated, so 'make'
-    // doesn't try to regenerate tons of dependencies.
-    //
-    MoveFileOverIfUpdated(OutputFilename+".tmp", OutputFilename);
-  }
-  return 0;
-}