Frontend: further document __BYTE_ORDER__
llvm-svn: 161494
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index e8ae8e3..6b9965e 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -445,7 +445,9 @@
// Initialize target-specific preprocessor defines.
- // __BYTE_ORDER__ was added in GCC 4.6.
+ // __BYTE_ORDER__ was added in GCC 4.6. It's analogous
+ // to the macro __BYTE_ORDER (no trailing underscores)
+ // from glibc's <endian.h> header.
// We don't support the PDP-11 as a target, but include
// the define so it can still be compared against.
Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234");