Import LLVM 4.0.0 rc1 including clang and lld to help the current

development effort on OpenBSD/arm64.

1 files changed, 65 insertions, 27 deletions

diff --git a/gnu/llvm/tools/clang/lib/Frontend/InitPreprocessor.cpp b/gnu/llvm/tools/clang/lib/Frontend/InitPreprocessor.cpp
index 6b93c697d9b..4502c92499a 100644
--- a/gnu/llvm/tools/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/gnu/llvm/tools/clang/lib/Frontend/InitPreprocessor.cpp
@@ -11,7 +11,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "clang/Frontend/Utils.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/MacroBuilder.h"
 #include "clang/Basic/SourceManager.h"
@@ -19,15 +18,13 @@
 #include "clang/Basic/Version.h"
 #include "clang/Frontend/FrontendDiagnostic.h"
 #include "clang/Frontend/FrontendOptions.h"
+#include "clang/Frontend/Utils.h"
 #include "clang/Lex/HeaderSearch.h"
 #include "clang/Lex/PTHManager.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Lex/PreprocessorOptions.h"
 #include "clang/Serialization/ASTReader.h"
 #include "llvm/ADT/APFloat.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/Path.h"
 using namespace clang;
 
 static bool MacroBodyEndsInBackslash(StringRef MacroBody) {
@@ -115,15 +112,15 @@ template <typename T>
 static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal,
                 T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
                 T IEEEQuadVal) {
-  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle)
+  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle())
     return IEEESingleVal;
-  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble)
+  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble())
     return IEEEDoubleVal;
-  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended)
+  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended())
     return X87DoubleExtendedVal;
-  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble)
+  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble())
     return PPCDoubleDoubleVal;
-  assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad);
+  assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad());
   return IEEEQuadVal;
 }
 
@@ -289,12 +286,12 @@ static void DefineFastIntType(unsigned TypeWidth, bool IsSigned,
 
 /// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with
 /// the specified properties.
-static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign,
-                                    unsigned InlineWidth) {
+static const char *getLockFreeValue(unsigned TypeWidth, unsigned InlineWidth) {
   // Fully-aligned, power-of-2 sizes no larger than the inline
   // width will be inlined as lock-free operations.
-  if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 &&
-      TypeWidth <= InlineWidth)
+  // Note: we do not need to check alignment since _Atomic(T) is always
+  // appropriately-aligned in clang.
+  if ((TypeWidth & (TypeWidth - 1)) == 0 && TypeWidth <= InlineWidth)
     return "2"; // "always lock free"
   // We cannot be certain what operations the lib calls might be
   // able to implement as lock-free on future processors.
@@ -395,6 +392,15 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
     //   C++ translation unit.
     else
       Builder.defineMacro("__cplusplus", "199711L");
+
+    // C++1z [cpp.predefined]p1:
+    //   An integer literal of type std::size_t whose value is the alignment
+    //   guaranteed by a call to operator new(std::size_t)
+    //
+    // We provide this in all language modes, since it seems generally useful.
+    Builder.defineMacro("__STDCPP_DEFAULT_NEW_ALIGNMENT__",
+                        Twine(TI.getNewAlign() / TI.getCharWidth()) +
+                            TI.getTypeConstantSuffix(TI.getSizeType()));
   }
 
   // In C11 these are environment macros. In C++11 they are only defined
@@ -438,6 +444,9 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
     Builder.defineMacro("CL_VERSION_1_2", "120");
     Builder.defineMacro("CL_VERSION_2_0", "200");
 
+    if (TI.isLittleEndian())
+      Builder.defineMacro("__ENDIAN_LITTLE__");
+
     if (LangOpts.FastRelaxedMath)
       Builder.defineMacro("__FAST_RELAXED_MATH__");
   }
@@ -467,8 +476,10 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
     Builder.defineMacro("__cpp_lambdas", "200907");
     Builder.defineMacro("__cpp_constexpr",
                         LangOpts.CPlusPlus14 ? "201304" : "200704");
-    Builder.defineMacro("__cpp_range_based_for", "200907");
-    Builder.defineMacro("__cpp_static_assert", "200410");
+    Builder.defineMacro("__cpp_range_based_for",
+                        LangOpts.CPlusPlus1z ? "201603" : "200907");
+    Builder.defineMacro("__cpp_static_assert",
+                        LangOpts.CPlusPlus1z ? "201411" : "200410");
     Builder.defineMacro("__cpp_decltype", "200707");
     Builder.defineMacro("__cpp_attributes", "200809");
     Builder.defineMacro("__cpp_rvalue_references", "200610");
@@ -476,7 +487,7 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
     Builder.defineMacro("__cpp_initializer_lists", "200806");
     Builder.defineMacro("__cpp_delegating_constructors", "200604");
     Builder.defineMacro("__cpp_nsdmi", "200809");
-    Builder.defineMacro("__cpp_inheriting_constructors", "200802");
+    Builder.defineMacro("__cpp_inheriting_constructors", "201511");
     Builder.defineMacro("__cpp_ref_qualifiers", "200710");
     Builder.defineMacro("__cpp_alias_templates", "200704");
   }
@@ -494,9 +505,31 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
   }
   if (LangOpts.SizedDeallocation)
     Builder.defineMacro("__cpp_sized_deallocation", "201309");
+
+  // C++17 features.
+  if (LangOpts.CPlusPlus1z) {
+    Builder.defineMacro("__cpp_hex_float", "201603");
+    Builder.defineMacro("__cpp_inline_variables", "201606");
+    Builder.defineMacro("__cpp_noexcept_function_type", "201510");
+    Builder.defineMacro("__cpp_capture_star_this", "201603");
+    Builder.defineMacro("__cpp_if_constexpr", "201606");
+    Builder.defineMacro("__cpp_template_auto", "201606");
+    Builder.defineMacro("__cpp_namespace_attributes", "201411");
+    Builder.defineMacro("__cpp_enumerator_attributes", "201411");
+    Builder.defineMacro("__cpp_nested_namespace_definitions", "201411");
+    Builder.defineMacro("__cpp_variadic_using", "201611");
+    Builder.defineMacro("__cpp_aggregate_bases", "201603");
+    Builder.defineMacro("__cpp_structured_bindings", "201606");
+    Builder.defineMacro("__cpp_nontype_template_args", "201411");
+    Builder.defineMacro("__cpp_fold_expressions", "201603");
+  }
+  if (LangOpts.AlignedAllocation)
+    Builder.defineMacro("__cpp_aligned_new", "201606");
+
+  // TS features.
   if (LangOpts.ConceptsTS)
     Builder.defineMacro("__cpp_experimental_concepts", "1");
-  if (LangOpts.Coroutines)
+  if (LangOpts.CoroutinesTS)
     Builder.defineMacro("__cpp_coroutines", "1");
 }
 
@@ -511,16 +544,12 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
 #define TOSTR(X) TOSTR2(X)
   Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR));
   Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR));
-#ifdef CLANG_VERSION_PATCHLEVEL
   Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL));
-#else
-  Builder.defineMacro("__clang_patchlevel__", "0");
-#endif
+#undef TOSTR
+#undef TOSTR2
   Builder.defineMacro("__clang_version__", 
                       "\"" CLANG_VERSION_STRING " "
                       + getClangFullRepositoryVersion() + "\"");
-#undef TOSTR
-#undef TOSTR2
   if (!LangOpts.MSVCCompat) {
     // Currently claim to be compatible with GCC 4.2.1-5621, but only if we're
     // not compiling for MSVC compatibility
@@ -564,6 +593,9 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
         Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
     }
 
+    Builder.defineMacro("__OBJC_BOOL_IS_BOOL",
+                        Twine(TI.useSignedCharForObjCBool() ? "0" : "1"));
+
     if (LangOpts.getGC() != LangOptions::NonGC)
       Builder.defineMacro("__OBJC_GC__");
 
@@ -677,7 +709,7 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
 
   // Define type sizing macros based on the target properties.
   assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
-  Builder.defineMacro("__CHAR_BIT__", "8");
+  Builder.defineMacro("__CHAR_BIT__", Twine(TI.getCharWidth()));
 
   DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder);
   DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
@@ -849,7 +881,6 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
 #define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
     Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \
                         getLockFreeValue(TI.get##Type##Width(), \
-                                         TI.get##Type##Align(), \
                                          InlineWidthBits));
     DEFINE_LOCK_FREE_MACRO(BOOL, Bool);
     DEFINE_LOCK_FREE_MACRO(CHAR, Char);
@@ -862,7 +893,6 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
     DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
     Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE",
                         getLockFreeValue(TI.getPointerWidth(0),
-                                         TI.getPointerAlign(0),
                                          InlineWidthBits));
 #undef DEFINE_LOCK_FREE_MACRO
   }
@@ -958,12 +988,20 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
   // OpenCL definitions.
   if (LangOpts.OpenCL) {
 #define OPENCLEXT(Ext) \
-    if (TI.getSupportedOpenCLOpts().is_##Ext##_supported( \
+    if (TI.getSupportedOpenCLOpts().isSupported(#Ext, \
         LangOpts.OpenCLVersion)) \
       Builder.defineMacro(#Ext);
 #include "clang/Basic/OpenCLExtensions.def"
   }
 
+  if (TI.hasInt128Type() && LangOpts.CPlusPlus && LangOpts.GNUMode) {
+    // For each extended integer type, g++ defines a macro mapping the
+    // index of the type (0 in this case) in some list of extended types
+    // to the type.
+    Builder.defineMacro("__GLIBCXX_TYPE_INT_N_0", "__int128");
+    Builder.defineMacro("__GLIBCXX_BITSIZE_INT_N_0", "128");
+  }
+
   // Get other target #defines.
   TI.getTargetDefines(LangOpts, Builder);
 }