vendor/clang/clang-trunk-r351319

1 files changed, 333 insertions, 0 deletions

diff --git a/include/clang/Basic/CodeGenOptions.h b/include/clang/Basic/CodeGenOptions.h
new file mode 100644
index 0000000000000..ec6eda7fb7881
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+++ b/include/clang/Basic/CodeGenOptions.h
@@ -0,0 +1,333 @@
+//===--- CodeGenOptions.h ---------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines the CodeGenOptions interface.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_BASIC_CODEGENOPTIONS_H
+#define LLVM_CLANG_BASIC_CODEGENOPTIONS_H
+
+#include "clang/Basic/DebugInfoOptions.h"
+#include "clang/Basic/Sanitizers.h"
+#include "clang/Basic/XRayInstr.h"
+#include "llvm/Support/CodeGen.h"
+#include "llvm/Support/Regex.h"
+#include "llvm/Target/TargetOptions.h"
+#include <map>
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace clang {
+
+/// Bitfields of CodeGenOptions, split out from CodeGenOptions to ensure
+/// that this large collection of bitfields is a trivial class type.
+class CodeGenOptionsBase {
+public:
+#define CODEGENOPT(Name, Bits, Default) unsigned Name : Bits;
+#define ENUM_CODEGENOPT(Name, Type, Bits, Default)
+#include "clang/Basic/CodeGenOptions.def"
+
+protected:
+#define CODEGENOPT(Name, Bits, Default)
+#define ENUM_CODEGENOPT(Name, Type, Bits, Default) unsigned Name : Bits;
+#include "clang/Basic/CodeGenOptions.def"
+};
+
+/// CodeGenOptions - Track various options which control how the code
+/// is optimized and passed to the backend.
+class CodeGenOptions : public CodeGenOptionsBase {
+public:
+  enum InliningMethod {
+    NormalInlining,     // Use the standard function inlining pass.
+    OnlyHintInlining,   // Inline only (implicitly) hinted functions.
+    OnlyAlwaysInlining  // Only run the always inlining pass.
+  };
+
+  enum VectorLibrary {
+    NoLibrary,  // Don't use any vector library.
+    Accelerate, // Use the Accelerate framework.
+    SVML        // Intel short vector math library.
+  };
+
+
+  enum ObjCDispatchMethodKind {
+    Legacy = 0,
+    NonLegacy = 1,
+    Mixed = 2
+  };
+
+  enum TLSModel {
+    GeneralDynamicTLSModel,
+    LocalDynamicTLSModel,
+    InitialExecTLSModel,
+    LocalExecTLSModel
+  };
+
+  enum DwarfFissionKind { NoFission, SplitFileFission, SingleFileFission };
+
+  /// Clang versions with different platform ABI conformance.
+  enum class ClangABI {
+    /// Attempt to be ABI-compatible with code generated by Clang 3.8.x
+    /// (SVN r257626). This causes <1 x long long> to be passed in an
+    /// integer register instead of an SSE register on x64_64.
+    Ver3_8,
+
+    /// Attempt to be ABI-compatible with code generated by Clang 4.0.x
+    /// (SVN r291814). This causes move operations to be ignored when
+    /// determining whether a class type can be passed or returned directly.
+    Ver4,
+
+    /// Conform to the underlying platform's C and C++ ABIs as closely
+    /// as we can.
+    Latest
+  };
+
+  enum StructReturnConventionKind {
+    SRCK_Default,  // No special option was passed.
+    SRCK_OnStack,  // Small structs on the stack (-fpcc-struct-return).
+    SRCK_InRegs    // Small structs in registers (-freg-struct-return).
+  };
+
+  enum ProfileInstrKind {
+    ProfileNone,       // Profile instrumentation is turned off.
+    ProfileClangInstr, // Clang instrumentation to generate execution counts
+                       // to use with PGO.
+    ProfileIRInstr,    // IR level PGO instrumentation in LLVM.
+  };
+
+  enum EmbedBitcodeKind {
+    Embed_Off,      // No embedded bitcode.
+    Embed_All,      // Embed both bitcode and commandline in the output.
+    Embed_Bitcode,  // Embed just the bitcode in the output.
+    Embed_Marker    // Embed a marker as a placeholder for bitcode.
+  };
+
+  enum SignReturnAddressScope {
+    None,    // No signing for any function
+    NonLeaf, // Sign the return address of functions that spill LR
+    All      // Sign the return address of all functions
+  };
+
+  enum SignReturnAddressKeyValue { AKey, BKey };
+
+  /// The code model to use (-mcmodel).
+  std::string CodeModel;
+
+  /// The filename with path we use for coverage data files. The runtime
+  /// allows further manipulation with the GCOV_PREFIX and GCOV_PREFIX_STRIP
+  /// environment variables.
+  std::string CoverageDataFile;
+
+  /// The filename with path we use for coverage notes files.
+  std::string CoverageNotesFile;
+
+  /// Regexes separated by a semi-colon to filter the files to instrument.
+  std::string ProfileFilterFiles;
+
+  /// Regexes separated by a semi-colon to filter the files to not instrument.
+  std::string ProfileExcludeFiles;
+
+  /// The version string to put into coverage files.
+  char CoverageVersion[4];
+
+  /// Enable additional debugging information.
+  std::string DebugPass;
+
+  /// The string to embed in debug information as the current working directory.
+  std::string DebugCompilationDir;
+
+  /// The string to embed in the debug information for the compile unit, if
+  /// non-empty.
+  std::string DwarfDebugFlags;
+
+  /// The string containing the commandline for the llvm.commandline metadata,
+  /// if non-empty.
+  std::string RecordCommandLine;
+
+  std::map<std::string, std::string> DebugPrefixMap;
+
+  /// The ABI to use for passing floating point arguments.
+  std::string FloatABI;
+
+  /// The floating-point denormal mode to use.
+  std::string FPDenormalMode;
+
+  /// The float precision limit to use, if non-empty.
+  std::string LimitFloatPrecision;
+
+  struct BitcodeFileToLink {
+    /// The filename of the bitcode file to link in.
+    std::string Filename;
+    /// If true, we set attributes functions in the bitcode library according to
+    /// our CodeGenOptions, much as we set attrs on functions that we generate
+    /// ourselves.
+    bool PropagateAttrs = false;
+    /// If true, we use LLVM module internalizer.
+    bool Internalize = false;
+    /// Bitwise combination of llvm::Linker::Flags, passed to the LLVM linker.
+    unsigned LinkFlags = 0;
+  };
+
+  /// The files specified here are linked in to the module before optimizations.
+  std::vector<BitcodeFileToLink> LinkBitcodeFiles;
+
+  /// The user provided name for the "main file", if non-empty. This is useful
+  /// in situations where the input file name does not match the original input
+  /// file, for example with -save-temps.
+  std::string MainFileName;
+
+  /// The name for the split debug info file that we'll break out. This is used
+  /// in the backend for setting the name in the skeleton cu.
+  std::string SplitDwarfFile;
+
+  /// The name of the relocation model to use.
+  llvm::Reloc::Model RelocationModel;
+
+  /// The thread model to use
+  std::string ThreadModel;
+
+  /// If not an empty string, trap intrinsics are lowered to calls to this
+  /// function instead of to trap instructions.
+  std::string TrapFuncName;
+
+  /// A list of dependent libraries.
+  std::vector<std::string> DependentLibraries;
+
+  /// A list of linker options to embed in the object file.
+  std::vector<std::string> LinkerOptions;
+
+  /// Name of the profile file to use as output for -fprofile-instr-generate
+  /// and -fprofile-generate.
+  std::string InstrProfileOutput;
+
+  /// Name of the profile file to use with -fprofile-sample-use.
+  std::string SampleProfileFile;
+
+  /// Name of the profile file to use as input for -fprofile-instr-use
+  std::string ProfileInstrumentUsePath;
+
+  /// Name of the profile remapping file to apply to the profile data supplied
+  /// by -fprofile-sample-use or -fprofile-instr-use.
+  std::string ProfileRemappingFile;
+
+  /// Name of the function summary index file to use for ThinLTO function
+  /// importing.
+  std::string ThinLTOIndexFile;
+
+  /// Name of a file that can optionally be written with minimized bitcode
+  /// to be used as input for the ThinLTO thin link step, which only needs
+  /// the summary and module symbol table (and not, e.g. any debug metadata).
+  std::string ThinLinkBitcodeFile;
+
+  /// Prefix to use for -save-temps output.
+  std::string SaveTempsFilePrefix;
+
+  /// Name of file passed with -fcuda-include-gpubinary option to forward to
+  /// CUDA runtime back-end for incorporating them into host-side object file.
+  std::string CudaGpuBinaryFileName;
+
+  /// The name of the file to which the backend should save YAML optimization
+  /// records.
+  std::string OptRecordFile;
+
+  /// Regular expression to select optimizations for which we should enable
+  /// optimization remarks. Transformation passes whose name matches this
+  /// expression (and support this feature), will emit a diagnostic
+  /// whenever they perform a transformation. This is enabled by the
+  /// -Rpass=regexp flag.
+  std::shared_ptr<llvm::Regex> OptimizationRemarkPattern;
+
+  /// Regular expression to select optimizations for which we should enable
+  /// missed optimization remarks. Transformation passes whose name matches this
+  /// expression (and support this feature), will emit a diagnostic
+  /// whenever they tried but failed to perform a transformation. This is
+  /// enabled by the -Rpass-missed=regexp flag.
+  std::shared_ptr<llvm::Regex> OptimizationRemarkMissedPattern;
+
+  /// Regular expression to select optimizations for which we should enable
+  /// optimization analyses. Transformation passes whose name matches this
+  /// expression (and support this feature), will emit a diagnostic
+  /// whenever they want to explain why they decided to apply or not apply
+  /// a given transformation. This is enabled by the -Rpass-analysis=regexp
+  /// flag.
+  std::shared_ptr<llvm::Regex> OptimizationRemarkAnalysisPattern;
+
+  /// Set of files defining the rules for the symbol rewriting.
+  std::vector<std::string> RewriteMapFiles;
+
+  /// Set of sanitizer checks that are non-fatal (i.e. execution should be
+  /// continued when possible).
+  SanitizerSet SanitizeRecover;
+
+  /// Set of sanitizer checks that trap rather than diagnose.
+  SanitizerSet SanitizeTrap;
+
+  /// List of backend command-line options for -fembed-bitcode.
+  std::vector<uint8_t> CmdArgs;
+
+  /// A list of all -fno-builtin-* function names (e.g., memset).
+  std::vector<std::string> NoBuiltinFuncs;
+
+  std::vector<std::string> Reciprocals;
+
+  /// The preferred width for auto-vectorization transforms. This is intended to
+  /// override default transforms based on the width of the architected vector
+  /// registers.
+  std::string PreferVectorWidth;
+
+  /// Set of XRay instrumentation kinds to emit.
+  XRayInstrSet XRayInstrumentationBundle;
+
+  std::vector<std::string> DefaultFunctionAttrs;
+
+public:
+  // Define accessors/mutators for code generation options of enumeration type.
+#define CODEGENOPT(Name, Bits, Default)
+#define ENUM_CODEGENOPT(Name, Type, Bits, Default) \
+  Type get##Name() const { return static_cast<Type>(Name); } \
+  void set##Name(Type Value) { Name = static_cast<unsigned>(Value); }
+#include "clang/Basic/CodeGenOptions.def"
+
+  CodeGenOptions();
+
+  /// Is this a libc/libm function that is no longer recognized as a
+  /// builtin because a -fno-builtin-* option has been specified?
+  bool isNoBuiltinFunc(const char *Name) const;
+
+  const std::vector<std::string> &getNoBuiltinFuncs() const {
+    return NoBuiltinFuncs;
+  }
+
+  /// Check if Clang profile instrumenation is on.
+  bool hasProfileClangInstr() const {
+    return getProfileInstr() == ProfileClangInstr;
+  }
+
+  /// Check if IR level profile instrumentation is on.
+  bool hasProfileIRInstr() const {
+    return getProfileInstr() == ProfileIRInstr;
+  }
+
+  /// Check if Clang profile use is on.
+  bool hasProfileClangUse() const {
+    return getProfileUse() == ProfileClangInstr;
+  }
+
+  /// Check if IR level profile use is on.
+  bool hasProfileIRUse() const {
+    return getProfileUse() == ProfileIRInstr;
+  }
+
+};
+
+}  // end namespace clang
+
+#endif