add support for identifying bitcode files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36845 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/System/Path.h b/include/llvm/System/Path.h
index 04b5d95e1e41a73a3a0eccd8f7830e831b053e2e..97876a3f81f075c62be4e70b50d9fb8edd135e7a 100644 (file)
--- a/include/llvm/System/Path.h
+++ b/include/llvm/System/Path.h
@@ -313,6 +313,13 @@ namespace sys {
       /// @brief Determine if the path references a bytecode file.
       bool isBytecodeFile() const;
 
+      /// This function determines if the path name in the object references an
+      /// LLVM Bitcode file by looking at its magic number.
+      /// @returns true if the file starts with the magic number for LLVM
+      /// bitcode files.
+      /// @brief Determine if the path references a bitcode file.
+      bool isBitcodeFile() const;
+      
       /// This function determines if the path name in the object references a
       /// native Dynamic Library (shared library, shared object) by looking at
       /// the file's magic number. The Path object must reference a file, not a
@@ -615,6 +622,7 @@ namespace sys {
   enum LLVMFileType {
     Unknown_FileType = 0,              ///< Unrecognized file
     Bytecode_FileType,                 ///< Uncompressed bytecode file
+    Bitcode_FileType,                  ///< Bitcode file
     CompressedBytecode_FileType,       ///< Compressed bytecode file
     Archive_FileType,                  ///< ar style archive file
     ELF_Relocatable_FileType,          ///< ELF Relocatable object file