Add note about following two commands are no longer equivalent.

 - "clang -O3 -flto a.c -c", and
 - "clang -emit-llvm a.c -c"

Thank Rafael for tips.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189150 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 8dd26faab9f4da640bc06456cc29438fb5adf1b2..df4ee1b5a09285797af15036c77ea5e6ad92973f 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -61,7 +61,8 @@ New Compiler Flags
 
 - Clang no longer special cases -O4 to enable lto. Explicitly pass -flto to
   enable it.
--  ...
+- Command line "clang -O3 -flto a.c -c" and "clang -emit-llvm a.c -c" 
+  are no longer equivalent.
 
 C Language Changes in Clang
 ---------------------------