[llvm] r198854 - Revert r198819 - "Remove dead code."

[Eric Christopher]

Any reason or just feeling contradictory? :)

-eric

On Wed Jan 08 2014 at 11:56:41 PM, Nadav Rotem <nrotem at apple.com> wrote:

> Author: nadav
> Date: Thu Jan  9 01:50:34 2014
> New Revision: 198854
>
> URL: http://llvm.org/viewvc/llvm-project?rev=198854&view=rev
> Log:
> Revert r198819 - "Remove dead code."
>
>
> Modified:
>     llvm/trunk/include/llvm/IR/Module.h
>     llvm/trunk/lib/IR/Module.cpp
>
> Modified: llvm/trunk/include/llvm/IR/Module.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/
> llvm/IR/Module.h?rev=198854&r1=198853&r2=198854&view=diff
> ============================================================
> ==================
> --- llvm/trunk/include/llvm/IR/Module.h (original)
> +++ llvm/trunk/include/llvm/IR/Module.h Thu Jan  9 01:50:34 2014
> @@ -142,6 +142,12 @@ public:
>    /// The named metadata constant interators.
>    typedef NamedMDListType::const_iterator const_named_metadata_iterator;
>
> +  /// An enumeration for describing the endianess of the target machine.
> +  enum Endianness { LittleEndian, BigEndian };
> +
> +  /// An enumeration for describing the size of a pointer on the target
> machine.
> +  enum PointerSize { Pointer32, Pointer64 };
> +
>    /// This enumeration defines the supported behaviors of module flags.
>    enum ModFlagBehavior {
>      /// Emits an error if two values disagree, otherwise the resulting
> value is
> @@ -230,6 +236,14 @@ public:
>    /// @returns a string containing the target triple.
>    const std::string &getTargetTriple() const { return TargetTriple; }
>
> +  /// Get the target endian information.
> +  /// @returns Endianess - an enumeration for the endianess of the target
> +  Endianness getEndianness() const;
> +
> +  /// Get the target pointer size.
> +  /// @returns PointerSize - an enumeration for the size of the target's
> pointer
> +  PointerSize getPointerSize() const;
> +
>    /// Get the global data context.
>    /// @returns LLVMContext - a container for LLVM's global information
>    LLVMContext &getContext() const { return Context; }
>
> Modified: llvm/trunk/lib/IR/Module.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/
> Module.cpp?rev=198854&r1=198853&r2=198854&view=diff
> ============================================================
> ==================
> --- llvm/trunk/lib/IR/Module.cpp (original)
> +++ llvm/trunk/lib/IR/Module.cpp Thu Jan  9 01:50:34 2014
> @@ -60,6 +60,51 @@ Module::~Module() {
>    delete static_cast<StringMap<NamedMDNode *> *>(NamedMDSymTab);
>  }
>
> +/// Target endian information.
> +Module::Endianness Module::getEndianness() const {
> +  StringRef temp = DataLayout;
> +  Module::Endianness ret = BigEndian;
> +
> +  while (!temp.empty()) {
> +    std::pair<StringRef, StringRef> P = getToken(temp, "-");
> +
> +    StringRef token = P.first;
> +    temp = P.second;
> +
> +    if (token[0] == 'e') {
> +      ret = LittleEndian;
> +    } else if (token[0] == 'E') {
> +      ret = BigEndian;
> +    }
> +  }
> +
> +  return ret;
> +}
> +
> +/// Target Pointer Size information.
> +Module::PointerSize Module::getPointerSize() const {
> +  StringRef temp = DataLayout;
> +  Module::PointerSize ret = Pointer64;
> +
> +  while (!temp.empty()) {
> +    std::pair<StringRef, StringRef> TmpP = getToken(temp, "-");
> +    temp = TmpP.second;
> +    TmpP = getToken(TmpP.first, ":");
> +    StringRef token = TmpP.second, signalToken = TmpP.first;
> +
> +    if (signalToken[0] == 'p') {
> +      int size = 0;
> +      getToken(token, ":").first.getAsInteger(10, size);
> +      if (size == 32)
> +        ret = Pointer32;
> +      else if (size == 64)
> +        ret = Pointer64;
> +    }
> +  }
> +
> +  return ret;
> +}
> +
>  /// getNamedValue - Return the first global value in the module with
>  /// the specified name, of arbitrary type.  This method returns null
>  /// if a global with the specified name is not found.
>
>
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