Vendor import of llvm release_30 branch r142614:

http://llvm.org/svn/llvm-project/llvm/branches/release_30@142614

8 files changed, 137 insertions, 95 deletions

diff --git a/lib/MC/MCDisassembler/CMakeLists.txt b/lib/MC/MCDisassembler/CMakeLists.txt
index 0ce359d..4debb28 100644
--- a/lib/MC/MCDisassembler/CMakeLists.txt
+++ b/lib/MC/MCDisassembler/CMakeLists.txt
@@ -1,4 +1,3 @@
-
 add_llvm_library(LLVMMCDisassembler
   Disassembler.cpp
   EDDisassembler.cpp
@@ -6,3 +5,26 @@ add_llvm_library(LLVMMCDisassembler
   EDOperand.cpp
   EDToken.cpp
   )
+
+add_llvm_library_dependencies(LLVMMCDisassembler
+  LLVMMC
+  LLVMMCParser
+  LLVMSupport
+  LLVMTarget
+  )
+
+foreach(t ${LLVM_TARGETS_TO_BUILD})
+  set(td ${LLVM_MAIN_SRC_DIR}/lib/Target/${t})
+  if(EXISTS ${td}/TargetInfo/CMakeLists.txt)
+    add_llvm_library_dependencies(LLVMMCDisassembler "LLVM${t}Info")
+  endif()
+  if(EXISTS ${td}/MCTargetDesc/CMakeLists.txt)
+    add_llvm_library_dependencies(LLVMMCDisassembler "LLVM${t}Desc")
+  endif()
+  if(EXISTS ${td}/AsmParser/CMakeLists.txt)
+    add_llvm_library_dependencies(LLVMMCDisassembler "LLVM${t}AsmParser")
+  endif()
+  if(EXISTS ${td}/Disassembler/CMakeLists.txt)
+    add_llvm_library_dependencies(LLVMMCDisassembler "LLVM${t}Disassembler")
+  endif()
+endforeach(t)
diff --git a/lib/MC/MCDisassembler/Disassembler.cpp b/lib/MC/MCDisassembler/Disassembler.cpp
index 5480b4b..16e66dc 100644
--- a/lib/MC/MCDisassembler/Disassembler.cpp
+++ b/lib/MC/MCDisassembler/Disassembler.cpp
@@ -1,4 +1,4 @@
-//===-- lib/MC/Disassembler.cpp - Disassembler Public C Interface -*- C -*-===//
+//===-- lib/MC/Disassembler.cpp - Disassembler Public C Interface ---------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -11,15 +11,14 @@
 #include "llvm-c/Disassembler.h"
 
 #include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCDisassembler.h"
 #include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCInstPrinter.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/Target/TargetAsmInfo.h"  // FIXME.
-#include "llvm/Target/TargetMachine.h"  // FIXME.
-#include "llvm/Target/TargetSelect.h"
+#include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/Support/MemoryObject.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/TargetSelect.h"
 
 namespace llvm {
 class Target;
@@ -38,10 +37,7 @@ LLVMDisasmContextRef LLVMCreateDisasm(const char *TripleName, void *DisInfo,
                                       LLVMSymbolLookupCallback SymbolLookUp) {
   // Initialize targets and assembly printers/parsers.
   llvm::InitializeAllTargetInfos();
-  // FIXME: We shouldn't need to initialize the Target(Machine)s.
-  llvm::InitializeAllTargets();
-  llvm::InitializeAllMCAsmInfos();
-  llvm::InitializeAllAsmPrinters();
+  llvm::InitializeAllTargetMCs();
   llvm::InitializeAllAsmParsers();
   llvm::InitializeAllDisassemblers();
 
@@ -54,41 +50,38 @@ LLVMDisasmContextRef LLVMCreateDisasm(const char *TripleName, void *DisInfo,
   const MCAsmInfo *MAI = TheTarget->createMCAsmInfo(TripleName);
   assert(MAI && "Unable to create target asm info!");
 
+  const MCRegisterInfo *MRI = TheTarget->createMCRegInfo(TripleName);
+  assert(MRI && "Unable to create target register info!");
+
   // Package up features to be passed to target/subtarget
   std::string FeaturesStr;
   std::string CPU;
 
-  // FIXME: We shouldn't need to do this (and link in codegen).
-  //        When we split this out, we should do it in a way that makes
-  //        it straightforward to switch subtargets on the fly.
-  TargetMachine *TM = TheTarget->createTargetMachine(TripleName, CPU,
-                                                     FeaturesStr);
-  assert(TM && "Unable to create target machine!");
-
-  // Get the target assembler info needed to setup the context.
-  const TargetAsmInfo *tai = new TargetAsmInfo(*TM);
-  assert(tai && "Unable to create target assembler!");
+  const MCSubtargetInfo *STI = TheTarget->createMCSubtargetInfo(TripleName, CPU,
+                                                                FeaturesStr);
+  assert(STI && "Unable to create subtarget info!");
 
   // Set up the MCContext for creating symbols and MCExpr's.
-  MCContext *Ctx = new MCContext(*MAI, tai);
+  MCContext *Ctx = new MCContext(*MAI, *MRI, 0);
   assert(Ctx && "Unable to create MCContext!");
 
   // Set up disassembler.
-  MCDisassembler *DisAsm = TheTarget->createMCDisassembler();
+  MCDisassembler *DisAsm = TheTarget->createMCDisassembler(*STI);
   assert(DisAsm && "Unable to create disassembler!");
-  DisAsm->setupForSymbolicDisassembly(GetOpInfo, DisInfo, Ctx);
+  DisAsm->setupForSymbolicDisassembly(GetOpInfo, SymbolLookUp, DisInfo, Ctx);
 
   // Set up the instruction printer.
   int AsmPrinterVariant = MAI->getAssemblerDialect();
   MCInstPrinter *IP = TheTarget->createMCInstPrinter(AsmPrinterVariant,
-                                                     *MAI);
+                                                     *MAI, *STI);
   assert(IP && "Unable to create instruction printer!");
 
   LLVMDisasmContext *DC = new LLVMDisasmContext(TripleName, DisInfo, TagType,
                                                 GetOpInfo, SymbolLookUp,
-                                                TheTarget, MAI, TM, tai, Ctx,
-                                                DisAsm, IP);
+                                                TheTarget, MAI, MRI,
+                                                Ctx, DisAsm, IP);
   assert(DC && "Allocation failure!");
+
   return DC;
 }
 
@@ -147,18 +140,35 @@ size_t LLVMDisasmInstruction(LLVMDisasmContextRef DCR, uint8_t *Bytes,
   MCInst Inst;
   const MCDisassembler *DisAsm = DC->getDisAsm();
   MCInstPrinter *IP = DC->getIP();
-  if (!DisAsm->getInstruction(Inst, Size, MemoryObject, PC, /*REMOVE*/ nulls()))
+  MCDisassembler::DecodeStatus S;
+  S = DisAsm->getInstruction(Inst, Size, MemoryObject, PC,
+                             /*REMOVE*/ nulls(), DC->CommentStream);
+  switch (S) {
+  case MCDisassembler::Fail:
+  case MCDisassembler::SoftFail:
+    // FIXME: Do something different for soft failure modes?
     return 0;
 
-  SmallVector<char, 64> InsnStr;
-  raw_svector_ostream OS(InsnStr);
-  IP->printInst(&Inst, OS);
-  OS.flush();
+  case MCDisassembler::Success: {
+    DC->CommentStream.flush();
+    StringRef Comments = DC->CommentsToEmit.str();
 
-  assert(OutStringSize != 0 && "Output buffer cannot be zero size");
-  size_t OutputSize = std::min(OutStringSize-1, InsnStr.size());
-  std::memcpy(OutString, InsnStr.data(), OutputSize);
-  OutString[OutputSize] = '\0'; // Terminate string.
+    SmallVector<char, 64> InsnStr;
+    raw_svector_ostream OS(InsnStr);
+    IP->printInst(&Inst, OS, Comments);
+    OS.flush();
 
-  return Size;
+    // Tell the comment stream that the vector changed underneath it.
+    DC->CommentsToEmit.clear();
+    DC->CommentStream.resync();
+
+    assert(OutStringSize != 0 && "Output buffer cannot be zero size");
+    size_t OutputSize = std::min(OutStringSize-1, InsnStr.size());
+    std::memcpy(OutString, InsnStr.data(), OutputSize);
+    OutString[OutputSize] = '\0'; // Terminate string.
+
+    return Size;
+  }
+  }
+  return 0;
 }
diff --git a/lib/MC/MCDisassembler/Disassembler.h b/lib/MC/MCDisassembler/Disassembler.h
index f0ec42a..238ff7d 100644
--- a/lib/MC/MCDisassembler/Disassembler.h
+++ b/lib/MC/MCDisassembler/Disassembler.h
@@ -20,15 +20,16 @@
 #include "llvm-c/Disassembler.h"
 #include <string>
 #include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/raw_ostream.h"
 
 namespace llvm {
-class TargetAsmInfo;
 class MCContext;
 class MCAsmInfo;
 class MCDisassembler;
 class MCInstPrinter; 
+class MCRegisterInfo;
 class Target;
-class TargetMachine;
 
 //
 // This is the disassembler context returned by LLVMCreateDisasm().
@@ -58,12 +59,8 @@ private:
   const Target *TheTarget;
   // The assembly information for the target architecture.
   llvm::OwningPtr<const llvm::MCAsmInfo> MAI;
-  // The target machine instance.
-  llvm::OwningPtr<llvm::TargetMachine> TM;
-  // The disassembler for the target architecture.
-  // FIXME: using llvm::OwningPtr<const llvm::TargetAsmInfo> causes a malloc
-  //        error when this LLVMDisasmContext is deleted.
-  const TargetAsmInfo *Tai;
+  // The register information for the target architecture.
+  llvm::OwningPtr<const llvm::MCRegisterInfo> MRI;
   // The assembly context for creating symbols and MCExprs.
   llvm::OwningPtr<const llvm::MCContext> Ctx;
   // The disassembler for the target architecture.
@@ -72,22 +69,28 @@ private:
   llvm::OwningPtr<llvm::MCInstPrinter> IP;
 
 public:
+  // Comment stream and backing vector.
+  SmallString<128> CommentsToEmit;
+  raw_svector_ostream CommentStream;
+
   LLVMDisasmContext(std::string tripleName, void *disInfo, int tagType,
                     LLVMOpInfoCallback getOpInfo,
                     LLVMSymbolLookupCallback symbolLookUp,
                     const Target *theTarget, const MCAsmInfo *mAI,
-                    llvm::TargetMachine *tM, const TargetAsmInfo *tai,
+                    const MCRegisterInfo *mRI,
                     llvm::MCContext *ctx, const MCDisassembler *disAsm,
                     MCInstPrinter *iP) : TripleName(tripleName),
                     DisInfo(disInfo), TagType(tagType), GetOpInfo(getOpInfo),
-                    SymbolLookUp(symbolLookUp), TheTarget(theTarget), Tai(tai) {
-    TM.reset(tM);
+                    SymbolLookUp(symbolLookUp), TheTarget(theTarget),
+                    CommentStream(CommentsToEmit) {
     MAI.reset(mAI);
+    MRI.reset(mRI);
     Ctx.reset(ctx);
     DisAsm.reset(disAsm);
     IP.reset(iP);
   }
   const MCDisassembler *getDisAsm() const { return DisAsm.get(); }
+  const MCAsmInfo *getAsmInfo() const { return MAI.get(); }
   MCInstPrinter *getIP() { return IP.get(); }
 };
 
diff --git a/lib/MC/MCDisassembler/EDDisassembler.cpp b/lib/MC/MCDisassembler/EDDisassembler.cpp
index bdd99af..83362a2 100644
--- a/lib/MC/MCDisassembler/EDDisassembler.cpp
+++ b/lib/MC/MCDisassembler/EDDisassembler.cpp
@@ -22,20 +22,19 @@
 #include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/MCParser/AsmLexer.h"
 #include "llvm/MC/MCParser/MCAsmParser.h"
 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+#include "llvm/MC/MCTargetAsmLexer.h"
+#include "llvm/MC/MCTargetAsmParser.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/MemoryObject.h"
 #include "llvm/Support/SourceMgr.h"
-#include "llvm/Target/TargetAsmLexer.h"
-#include "llvm/Target/TargetAsmParser.h"
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Target/TargetSelect.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/TargetSelect.h"
 using namespace llvm;
 
 bool EDDisassembler::sInitialized = false;
@@ -106,9 +105,7 @@ void EDDisassembler::initialize() {
   sInitialized = true;
   
   InitializeAllTargetInfos();
-  InitializeAllTargets();
-  InitializeAllMCAsmInfos();
-  InitializeAllAsmPrinters();
+  InitializeAllTargetMCs();
   InitializeAllAsmParsers();
   InitializeAllDisassemblers();
 }
@@ -169,24 +166,24 @@ EDDisassembler::EDDisassembler(CPUKey &key) :
   if (!Tgt)
     return;
   
-  std::string CPU;
-  std::string featureString;
-  TargetMachine.reset(Tgt->createTargetMachine(tripleString, CPU,
-                                               featureString));
+  MRI.reset(Tgt->createMCRegInfo(tripleString));
 
-  const TargetRegisterInfo *registerInfo = TargetMachine->getRegisterInfo();
-  
-  if (!registerInfo)
+  if (!MRI)
     return;
-    
-  initMaps(*registerInfo);
+
+  initMaps(*MRI);
   
   AsmInfo.reset(Tgt->createMCAsmInfo(tripleString));
   
   if (!AsmInfo)
     return;
 
-  Disassembler.reset(Tgt->createMCDisassembler());
+  STI.reset(Tgt->createMCSubtargetInfo(tripleString, "", ""));
+  
+  if (!STI)
+    return;
+
+  Disassembler.reset(Tgt->createMCDisassembler(*STI));
   
   if (!Disassembler)
     return;
@@ -195,16 +192,16 @@ EDDisassembler::EDDisassembler(CPUKey &key) :
   
   InstString.reset(new std::string);
   InstStream.reset(new raw_string_ostream(*InstString));
-  InstPrinter.reset(Tgt->createMCInstPrinter(LLVMSyntaxVariant, *AsmInfo));
+  InstPrinter.reset(Tgt->createMCInstPrinter(LLVMSyntaxVariant, *AsmInfo, *STI));
   
   if (!InstPrinter)
     return;
     
   GenericAsmLexer.reset(new AsmLexer(*AsmInfo));
-  SpecificAsmLexer.reset(Tgt->createAsmLexer(*AsmInfo));
+  SpecificAsmLexer.reset(Tgt->createMCAsmLexer(*MRI, *AsmInfo));
   SpecificAsmLexer->InstallLexer(*GenericAsmLexer);
   
-  initMaps(*TargetMachine->getRegisterInfo());
+  initMaps(*MRI);
     
   Valid = true;
 }
@@ -247,14 +244,17 @@ EDInst *EDDisassembler::createInst(EDByteReaderCallback byteReader,
   MCInst* inst = new MCInst;
   uint64_t byteSize;
   
-  if (!Disassembler->getInstruction(*inst,
-                                    byteSize,
-                                    memoryObject,
-                                    address,
-                                    ErrorStream)) {
+  MCDisassembler::DecodeStatus S;
+  S = Disassembler->getInstruction(*inst, byteSize, memoryObject, address,
+                                   ErrorStream, nulls());
+  switch (S) {
+  case MCDisassembler::Fail:
+  case MCDisassembler::SoftFail:
+    // FIXME: Do something different on soft failure mode?
     delete inst;
     return NULL;
-  } else {
+    
+  case MCDisassembler::Success: {
     const llvm::EDInstInfo *thisInstInfo = NULL;
 
     if (InstInfos) {
@@ -264,9 +264,11 @@ EDInst *EDDisassembler::createInst(EDByteReaderCallback byteReader,
     EDInst* sdInst = new EDInst(inst, byteSize, *this, thisInstInfo);
     return sdInst;
   }
+  }
+  return NULL;
 }
 
-void EDDisassembler::initMaps(const TargetRegisterInfo &registerInfo) {
+void EDDisassembler::initMaps(const MCRegisterInfo &registerInfo) {
   unsigned numRegisters = registerInfo.getNumRegs();
   unsigned registerIndex;
   
@@ -325,7 +327,7 @@ bool EDDisassembler::registerIsProgramCounter(unsigned registerID) {
 int EDDisassembler::printInst(std::string &str, MCInst &inst) {
   PrinterMutex.acquire();
   
-  InstPrinter->printInst(&inst, *InstStream);
+  InstPrinter->printInst(&inst, *InstStream, "");
   InstStream->flush();
   str = *InstString;
   InstString->clear();
@@ -368,16 +370,16 @@ int EDDisassembler::parseInst(SmallVectorImpl<MCParsedAsmOperand*> &operands,
   SourceMgr sourceMgr;
   sourceMgr.setDiagHandler(diag_handler, static_cast<void*>(this));
   sourceMgr.AddNewSourceBuffer(buf, SMLoc()); // ownership of buf handed over
-  MCContext context(*AsmInfo, NULL);
+  MCContext context(*AsmInfo, *MRI, NULL);
   OwningPtr<MCStreamer> streamer(createNullStreamer(context));
-  OwningPtr<MCAsmParser> genericParser(createMCAsmParser(*Tgt, sourceMgr,
+  OwningPtr<MCAsmParser> genericParser(createMCAsmParser(sourceMgr,
                                                          context, *streamer,
                                                          *AsmInfo));
 
   StringRef triple = tripleFromArch(Key.Arch);
   OwningPtr<MCSubtargetInfo> STI(Tgt->createMCSubtargetInfo(triple, "", ""));
-  OwningPtr<TargetAsmParser> TargetParser(Tgt->createAsmParser(*STI,
-                                                               *genericParser));
+  OwningPtr<MCTargetAsmParser>
+    TargetParser(Tgt->createMCAsmParser(*STI, *genericParser));
   
   AsmToken OpcodeToken = genericParser->Lex();
   AsmToken NextToken = genericParser->Lex();  // consume next token, because specificParser expects us to
diff --git a/lib/MC/MCDisassembler/EDDisassembler.h b/lib/MC/MCDisassembler/EDDisassembler.h
index 11d69c1..38c2203 100644
--- a/lib/MC/MCDisassembler/EDDisassembler.h
+++ b/lib/MC/MCDisassembler/EDDisassembler.h
@@ -29,24 +29,23 @@
 
 namespace llvm {
 class AsmLexer;
+class AsmParser;
 class AsmToken;
 class MCContext;
 class MCAsmInfo;
 class MCAsmLexer;
-class AsmParser;
-class TargetAsmLexer;
-class TargetAsmParser;
 class MCDisassembler;
 class MCInstPrinter;
 class MCInst;
 class MCParsedAsmOperand;
+class MCRegisterInfo;
 class MCStreamer;
 class MCSubtargetInfo;
+class MCTargetAsmLexer;
+class MCTargetAsmParser;
 template <typename T> class SmallVectorImpl;
 class SourceMgr;
 class Target;
-class TargetMachine;
-class TargetRegisterInfo;
 
 struct EDInstInfo;
 struct EDInst;
@@ -136,10 +135,12 @@ struct EDDisassembler {
   CPUKey Key;
   /// The LLVM target corresponding to the disassembler
   const llvm::Target *Tgt;
-  /// The target machine instance.
-  llvm::OwningPtr<llvm::TargetMachine> TargetMachine;
   /// The assembly information for the target architecture
   llvm::OwningPtr<const llvm::MCAsmInfo> AsmInfo;
+  /// The subtarget information for the target architecture
+  llvm::OwningPtr<const llvm::MCSubtargetInfo> STI;
+  // The register information for the target architecture.
+  llvm::OwningPtr<const llvm::MCRegisterInfo> MRI;
   /// The disassembler for the target architecture
   llvm::OwningPtr<const llvm::MCDisassembler> Disassembler;
   /// The output string for the instruction printer; must be guarded with 
@@ -160,7 +161,7 @@ struct EDDisassembler {
   /// The target-specific lexer for use in tokenizing strings, in
   ///   target-independent and target-specific portions
   llvm::OwningPtr<llvm::AsmLexer> GenericAsmLexer;
-  llvm::OwningPtr<llvm::TargetAsmLexer> SpecificAsmLexer;
+  llvm::OwningPtr<llvm::MCTargetAsmLexer> SpecificAsmLexer;
   /// The guard for the above
   llvm::sys::Mutex ParserMutex;
   /// The LLVM number used for the target disassembly syntax variant
@@ -216,7 +217,7 @@ struct EDDisassembler {
   ///   info
   ///
   /// @arg registerInfo - the register information to use as a source
-  void initMaps(const llvm::TargetRegisterInfo &registerInfo);
+  void initMaps(const llvm::MCRegisterInfo &registerInfo);
   /// nameWithRegisterID - Returns the name (owned by the EDDisassembler) of a 
   ///   register for a given register ID, or NULL on failure
   ///
diff --git a/lib/MC/MCDisassembler/EDInst.h b/lib/MC/MCDisassembler/EDInst.h
index ceb9505..6b78dc8 100644
--- a/lib/MC/MCDisassembler/EDInst.h
+++ b/lib/MC/MCDisassembler/EDInst.h
@@ -73,7 +73,7 @@ struct EDInst {
   std::string String;
   /// The order in which operands from the InstInfo's operand information appear
   /// in String
-  const char* OperandOrder;
+  const signed char* OperandOrder;
   
   /// The result of the parseOperands() function
   CachedResult ParseResult;
diff --git a/lib/MC/MCDisassembler/EDToken.cpp b/lib/MC/MCDisassembler/EDToken.cpp
index de770b4..5f6c9df 100644
--- a/lib/MC/MCDisassembler/EDToken.cpp
+++ b/lib/MC/MCDisassembler/EDToken.cpp
@@ -87,14 +87,18 @@ int EDToken::registerID(unsigned &registerID) const {
 
 int EDToken::tokenize(std::vector<EDToken*> &tokens,
                       std::string &str,
-                      const char *operandOrder,
+                      const signed char *operandOrder,
                       EDDisassembler &disassembler) {
   SmallVector<MCParsedAsmOperand*, 5> parsedOperands;
   SmallVector<AsmToken, 10> asmTokens;
   
   if (disassembler.parseInst(parsedOperands, asmTokens, str))
+  {
+    for (unsigned i = 0, e = parsedOperands.size(); i != e; ++i)
+      delete parsedOperands[i];
     return -1;
-  
+  }
+      
   SmallVectorImpl<MCParsedAsmOperand*>::iterator operandIterator;
   unsigned int operandIndex;
   SmallVectorImpl<AsmToken>::iterator tokenIterator;
diff --git a/lib/MC/MCDisassembler/EDToken.h b/lib/MC/MCDisassembler/EDToken.h
index ba46707..384079b 100644
--- a/lib/MC/MCDisassembler/EDToken.h
+++ b/lib/MC/MCDisassembler/EDToken.h
@@ -125,7 +125,7 @@ struct EDToken {
   //                      assembly syntax
   static int tokenize(std::vector<EDToken*> &tokens,
                       std::string &str,
-                      const char *operandOrder,
+                      const signed char *operandOrder,
                       EDDisassembler &disassembler);
   
   /// getString - Directs a character pointer to the string, returning 0 on