Use instruction itinerary to determine what instructions are 'cheap'.

[oota-llvm.git] / include / llvm / System / Path.h

diff --git a/include/llvm/System/Path.h b/include/llvm/System/Path.h
index 23b18d47145aaab3ea4f22b853419f57e14a90c3..27fa2c3f4fc348fd13a0c687ac63afbbf7e1df5f 100644 (file)
--- a/include/llvm/System/Path.h
+++ b/include/llvm/System/Path.h
@@ -342,6 +342,17 @@ namespace sys {
       /// @brief Determine if the path references a dynamic library.
       bool isDynamicLibrary() const;
 
+      /// This function determines if the path name in the object references a
+      /// native object file by looking at it's magic number. The term object
+      /// file is defined as "an organized collection of separate, named
+      /// sequences of binary data." This covers the obvious file formats such as
+      /// COFF and ELF, but it also includes llvm ir bitcode, archives,
+      /// libraries, etc...
+      /// @returns true if the file starts with the magic number for an object
+      /// file.
+      /// @brief Determine if the path references an object file.
+      bool isObjectFile() const;
+
       /// This function determines if the path name references an existing file
       /// or directory in the file system.
       /// @returns true if the pathname references an existing file or