Add some comments explaining what MVT and EVT are, and how they differ.

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

diff --git a/include/llvm/System/Path.h b/include/llvm/System/Path.h
index 23b18d47145aaab3ea4f22b853419f57e14a90c3..ef7c087bb76b756052b083d2f7a3347ed88c70c0 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
@@ -374,9 +385,9 @@ namespace sys {
       /// in the file system.
       bool canWrite() const;
 
-      /// This function checks that what we're trying to work only on a regular file.
-      /// Check for things like /dev/null, any block special file,
-      /// or other things that aren't "regular" regular files.
+      /// This function checks that what we're trying to work only on a regular
+      /// file. Check for things like /dev/null, any block special file, or
+      /// other things that aren't "regular" regular files.
       /// @returns true if the file is S_ISREG.
       /// @brief Determines if the file is a regular file
       bool isRegularFile() const;