Update clang to r84949.

5 files changed, 174 insertions, 36 deletions

diff --git a/lib/Basic/Diagnostic.cpp b/lib/Basic/Diagnostic.cpp
index 4a29997..fbc7313 100644
--- a/lib/Basic/Diagnostic.cpp
+++ b/lib/Basic/Diagnostic.cpp
@@ -25,6 +25,7 @@
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/raw_ostream.h"
 #include <vector>
 #include <map>
 #include <cstring>
@@ -82,9 +83,14 @@ static const StaticDiagInfoRec *GetDiagInfo(unsigned DiagID) {
 #ifndef NDEBUG
   static bool IsFirst = true;
   if (IsFirst) {
-    for (unsigned i = 1; i != NumDiagEntries; ++i)
+    for (unsigned i = 1; i != NumDiagEntries; ++i) {
+      assert(StaticDiagInfo[i-1].DiagID != StaticDiagInfo[i].DiagID &&
+             "Diag ID conflict, the enums at the start of clang::diag (in "
+             "Diagnostic.h) probably need to be increased");
+
       assert(StaticDiagInfo[i-1] < StaticDiagInfo[i] &&
              "Improperly sorted diag info");
+    }
     IsFirst = false;
   }
 #endif
@@ -184,6 +190,8 @@ namespace clang {
 static void DummyArgToStringFn(Diagnostic::ArgumentKind AK, intptr_t QT,
                                const char *Modifier, unsigned ML,
                                const char *Argument, unsigned ArgLen,
+                               const Diagnostic::ArgumentValue *PrevArgs,
+                               unsigned NumPrevArgs,
                                llvm::SmallVectorImpl<char> &Output,
                                void *Cookie) {
   const char *Str = "<can't format argument>";
@@ -222,6 +230,8 @@ Diagnostic::~Diagnostic() {
 
 
 void Diagnostic::pushMappings() {
+  // Avoids undefined behavior when the stack has to resize.
+  DiagMappingsStack.reserve(DiagMappingsStack.size() + 1);
   DiagMappingsStack.push_back(DiagMappingsStack.back());
 }
 
@@ -679,6 +689,12 @@ FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const {
   const char *DiagStr = getDiags()->getDescription(getID());
   const char *DiagEnd = DiagStr+strlen(DiagStr);
 
+  /// FormattedArgs - Keep track of all of the arguments formatted by
+  /// ConvertArgToString and pass them into subsequent calls to
+  /// ConvertArgToString, allowing the implementation to avoid redundancies in
+  /// obvious cases.
+  llvm::SmallVector<Diagnostic::ArgumentValue, 8> FormattedArgs;
+  
   while (DiagStr != DiagEnd) {
     if (DiagStr[0] != '%') {
       // Append non-%0 substrings to Str if we have one.
@@ -726,7 +742,9 @@ FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const {
     assert(isdigit(*DiagStr) && "Invalid format for argument in diagnostic");
     unsigned ArgNo = *DiagStr++ - '0';
 
-    switch (getArgKind(ArgNo)) {
+    Diagnostic::ArgumentKind Kind = getArgKind(ArgNo);
+    
+    switch (Kind) {
     // ---- STRINGS ----
     case Diagnostic::ak_std_string: {
       const std::string &S = getArgStdStr(ArgNo);
@@ -757,9 +775,7 @@ FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const {
         HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr);
       } else {
         assert(ModifierLen == 0 && "Unknown integer modifier");
-        // FIXME: Optimize
-        std::string S = llvm::itostr(Val);
-        OutStr.append(S.begin(), S.end());
+        llvm::raw_svector_ostream(OutStr) << Val;
       }
       break;
     }
@@ -774,10 +790,7 @@ FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const {
         HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr);
       } else {
         assert(ModifierLen == 0 && "Unknown integer modifier");
-
-        // FIXME: Optimize
-        std::string S = llvm::utostr_32(Val);
-        OutStr.append(S.begin(), S.end());
+        llvm::raw_svector_ostream(OutStr) << Val;
       }
       break;
     }
@@ -793,9 +806,7 @@ FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const {
         continue;
       }
 
-      OutStr.push_back('\'');
-      OutStr.append(II->getName(), II->getName() + II->getLength());
-      OutStr.push_back('\'');
+      llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\'';
       break;
     }
     case Diagnostic::ak_qualtype:
@@ -803,11 +814,23 @@ FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const {
     case Diagnostic::ak_nameddecl:
     case Diagnostic::ak_nestednamespec:
     case Diagnostic::ak_declcontext:
-      getDiags()->ConvertArgToString(getArgKind(ArgNo), getRawArg(ArgNo),
+      getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo),
                                      Modifier, ModifierLen,
-                                     Argument, ArgumentLen, OutStr);
+                                     Argument, ArgumentLen,
+                                     FormattedArgs.data(), FormattedArgs.size(),
+                                     OutStr);
       break;
     }
+    
+    // Remember this argument info for subsequent formatting operations.  Turn
+    // std::strings into a null terminated string to make it be the same case as
+    // all the other ones.
+    if (Kind != Diagnostic::ak_std_string)
+      FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo)));
+    else
+      FormattedArgs.push_back(std::make_pair(Diagnostic::ak_c_string,
+                                        (intptr_t)getArgStdStr(ArgNo).c_str()));
+    
   }
 }
 
diff --git a/lib/Basic/FileManager.cpp b/lib/Basic/FileManager.cpp
index df86f9d..ee4309d 100644
--- a/lib/Basic/FileManager.cpp
+++ b/lib/Basic/FileManager.cpp
@@ -149,6 +149,41 @@ FileManager::~FileManager() {
   delete &UniqueFiles;
 }
 
+void FileManager::addStatCache(StatSysCallCache *statCache, bool AtBeginning) {
+  assert(statCache && "No stat cache provided?");
+  if (AtBeginning || StatCache.get() == 0) {
+    statCache->setNextStatCache(StatCache.take());
+    StatCache.reset(statCache);
+    return;
+  }
+  
+  StatSysCallCache *LastCache = StatCache.get();
+  while (LastCache->getNextStatCache())
+    LastCache = LastCache->getNextStatCache();
+  
+  LastCache->setNextStatCache(statCache);
+}
+
+void FileManager::removeStatCache(StatSysCallCache *statCache) {
+  if (!statCache)
+    return;
+  
+  if (StatCache.get() == statCache) {
+    // This is the first stat cache.
+    StatCache.reset(StatCache->takeNextStatCache());
+    return;
+  }
+  
+  // Find the stat cache in the list.
+  StatSysCallCache *PrevCache = StatCache.get();
+  while (PrevCache && PrevCache->getNextStatCache() != statCache)
+    PrevCache = PrevCache->getNextStatCache();
+  if (PrevCache)
+    PrevCache->setNextStatCache(statCache->getNextStatCache());
+  else
+    assert(false && "Stat cache not found for removal");
+}
+
 /// getDirectory - Lookup, cache, and verify the specified directory.  This
 /// returns null if the directory doesn't exist.
 ///
@@ -290,8 +325,8 @@ void FileManager::PrintStats() const {
 }
 
 int MemorizeStatCalls::stat(const char *path, struct stat *buf) {
-  int result = ::stat(path, buf);
-
+  int result = StatSysCallCache::stat(path, buf);
+  
   if (result != 0) {
     // Cache failed 'stat' results.
     struct stat empty;
diff --git a/lib/Basic/IdentifierTable.cpp b/lib/Basic/IdentifierTable.cpp
index 93c260f..16aa0c5 100644
--- a/lib/Basic/IdentifierTable.cpp
+++ b/lib/Basic/IdentifierTable.cpp
@@ -16,6 +16,7 @@
 #include "clang/Basic/LangOptions.h"
 #include "llvm/ADT/FoldingSet.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/Support/raw_ostream.h"
 #include <cstdio>
 
 using namespace clang;
@@ -153,7 +154,7 @@ tok::PPKeywordKind IdentifierInfo::getPPKeywordID() const {
 
   unsigned Len = getLength();
   if (Len < 2) return tok::pp_not_keyword;
-  const char *Name = getName();
+  const char *Name = getNameStart();
   switch (HASH(Len, Name[0], Name[2])) {
   default: return tok::pp_not_keyword;
   CASE( 2, 'i', '\0', if);
@@ -301,24 +302,15 @@ IdentifierInfo *Selector::getIdentifierInfoForSlot(unsigned argIndex) const {
 }
 
 std::string MultiKeywordSelector::getName() const {
-  std::string Result;
-  unsigned Length = 0;
+  llvm::SmallString<256> Str;
+  llvm::raw_svector_ostream OS(Str);
   for (keyword_iterator I = keyword_begin(), E = keyword_end(); I != E; ++I) {
     if (*I)
-      Length += (*I)->getLength();
-    ++Length;  // :
+      OS << (*I)->getName();
+    OS << ':';
   }
 
-  Result.reserve(Length);
-
-  for (keyword_iterator I = keyword_begin(), E = keyword_end(); I != E; ++I) {
-    if (*I)
-      Result.insert(Result.end(), (*I)->getName(),
-                    (*I)->getName()+(*I)->getLength());
-    Result.push_back(':');
-  }
-
-  return Result;
+  return OS.str();
 }
 
 std::string Selector::getAsString() const {
@@ -332,9 +324,10 @@ std::string Selector::getAsString() const {
     if (getNumArgs() == 0)
       return II->getName();
 
-    std::string Res = II ? II->getName() : "";
-    Res += ":";
-    return Res;
+    if (!II)
+      return ":";
+
+    return II->getName().str() + ":";
   }
 
   // We have a multiple keyword selector (no embedded flags).
diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp
index 9cd1249..8f3c777 100644
--- a/lib/Basic/TargetInfo.cpp
+++ b/lib/Basic/TargetInfo.cpp
@@ -43,6 +43,7 @@ TargetInfo::TargetInfo(const std::string &T) : Triple(T) {
   UIntMaxType = UnsignedLongLong;
   IntPtrType = SignedLong;
   WCharType = SignedInt;
+  WIntType = SignedInt;
   Char16Type = UnsignedShort;
   Char32Type = UnsignedInt;
   Int64Type = SignedLongLong;
@@ -73,6 +74,57 @@ const char *TargetInfo::getTypeName(IntType T) {
   }
 }
 
+/// getTypeConstantSuffix - Return the constant suffix for the specified
+/// integer type enum. For example, SignedLong -> "L".
+const char *TargetInfo::getTypeConstantSuffix(IntType T) {
+  switch (T) {
+  default: assert(0 && "not an integer!");
+  case SignedShort:
+  case SignedInt:        return "";
+  case SignedLong:       return "L";
+  case SignedLongLong:   return "LL";
+  case UnsignedShort:
+  case UnsignedInt:      return "U";
+  case UnsignedLong:     return "UL";
+  case UnsignedLongLong: return "ULL";
+  }
+}
+
+/// getTypeWidth - Return the width (in bits) of the specified integer type 
+/// enum. For example, SignedInt -> getIntWidth().
+unsigned TargetInfo::getTypeWidth(IntType T) const {
+  switch (T) {
+  default: assert(0 && "not an integer!");
+  case SignedShort:      return getShortWidth();
+  case UnsignedShort:    return getShortWidth();
+  case SignedInt:        return getIntWidth();
+  case UnsignedInt:      return getIntWidth();
+  case SignedLong:       return getLongWidth();
+  case UnsignedLong:     return getLongWidth();
+  case SignedLongLong:   return getLongLongWidth();
+  case UnsignedLongLong: return getLongLongWidth();
+  };
+}
+
+/// getTypeSigned - Return whether an integer types is signed. Returns true if
+/// the type is signed; false otherwise.
+bool TargetInfo::getTypeSigned(IntType T) const {
+  switch (T) {
+  default: assert(0 && "not an integer!");
+  case SignedShort:
+  case SignedInt:
+  case SignedLong:
+  case SignedLongLong:   
+    return true;
+  case UnsignedShort:
+  case UnsignedInt:
+  case UnsignedLong:
+  case UnsignedLongLong: 
+    return false;
+  };
+}
+
+
 //===----------------------------------------------------------------------===//
 
 
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 1d4d123..66d6824 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -320,6 +320,27 @@ public:
     : OSTargetInfo<Target>(triple) {}
 };
 
+// AuroraUX target
+template<typename Target>
+class AuroraUXTargetInfo : public OSTargetInfo<Target> {
+protected:
+  virtual void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
+                                std::vector<char> &Defs) const {
+    DefineStd(Defs, "sun", Opts);
+    DefineStd(Defs, "unix", Opts);
+    Define(Defs, "__ELF__");
+    Define(Defs, "__svr4__");
+    Define(Defs, "__SVR4");
+  }
+public:
+  AuroraUXTargetInfo(const std::string& triple)
+    : OSTargetInfo<Target>(triple) {
+    this->UserLabelPrefix = "";
+    this->WCharType = this->SignedLong;
+    // FIXME: WIntType should be SignedLong
+  }
+};
+
 // Solaris target
 template<typename Target>
 class SolarisTargetInfo : public OSTargetInfo<Target> {
@@ -1456,6 +1477,14 @@ void SparcV8TargetInfo::getGCCRegAliases(const GCCRegAlias *&Aliases,
 } // end anonymous namespace.
 
 namespace {
+class AuroraUXSparcV8TargetInfo : public AuroraUXTargetInfo<SparcV8TargetInfo> {
+public:
+  AuroraUXSparcV8TargetInfo(const std::string& triple) :
+      AuroraUXTargetInfo<SparcV8TargetInfo>(triple) {
+    SizeType = UnsignedInt;
+    PtrDiffType = SignedInt;
+  }
+};
 class SolarisSparcV8TargetInfo : public SolarisTargetInfo<SparcV8TargetInfo> {
 public:
   SolarisSparcV8TargetInfo(const std::string& triple) :
@@ -1573,8 +1602,8 @@ namespace {
     }
     virtual bool validateAsmConstraint(const char *&Name,
                                        TargetInfo::ConstraintInfo &info) const {
-      // FIXME: implement
-      return true;
+      // No target constraints for now.
+      return false;
     }
     virtual const char *getClobbers() const {
       // FIXME: Is this really right?
@@ -1846,6 +1875,8 @@ TargetInfo* TargetInfo::CreateTargetInfo(const std::string &T) {
     return new PPC64TargetInfo(T);
 
   case llvm::Triple::sparc:
+    if (os == llvm::Triple::AuroraUX)
+      return new AuroraUXSparcV8TargetInfo(T);
     if (os == llvm::Triple::Solaris)
       return new SolarisSparcV8TargetInfo(T);
     return new SparcV8TargetInfo(T);
@@ -1858,6 +1889,8 @@ TargetInfo* TargetInfo::CreateTargetInfo(const std::string &T) {
 
   case llvm::Triple::x86:
     switch (os) {
+    case llvm::Triple::AuroraUX:
+      return new AuroraUXTargetInfo<X86_32TargetInfo>(T);
     case llvm::Triple::Darwin:
       return new DarwinI386TargetInfo(T);
     case llvm::Triple::Linux:
@@ -1884,6 +1917,8 @@ TargetInfo* TargetInfo::CreateTargetInfo(const std::string &T) {
 
   case llvm::Triple::x86_64:
     switch (os) {
+    case llvm::Triple::AuroraUX:
+      return new AuroraUXTargetInfo<X86_64TargetInfo>(T);
     case llvm::Triple::Darwin:
       return new DarwinX86_64TargetInfo(T);
     case llvm::Triple::Linux: