Add a new optimization option -Og
Summary:
Just like gcc, we should have the -Og option as more and more software are using it:
https://llvm.org/bugs/show_bug.cgi?id=20765
Reviewers: echristo, dberlin, dblaikie, keith.walker.arm, rengolin
Subscribers: aprantl, friss, mehdi_amini, RKSimon, probinson, majnemer, cfe-commits
Differential Revision: https://reviews.llvm.org/D24998
llvm-svn: 286602
diff --git a/clang/docs/CommandGuide/clang.rst b/clang/docs/CommandGuide/clang.rst
index c715449..8aade1a 100644
--- a/clang/docs/CommandGuide/clang.rst
+++ b/clang/docs/CommandGuide/clang.rst
@@ -226,7 +226,7 @@
Code Generation Options
~~~~~~~~~~~~~~~~~~~~~~~
-.. option:: -O0, -O1, -O2, -O3, -Ofast, -Os, -Oz, -O, -O4
+.. option:: -O0, -O1, -O2, -O3, -Ofast, -Os, -Oz, -Og, -O, -O4
Specify which optimization level to use:
@@ -252,6 +252,9 @@
:option:`-Oz` Like :option:`-Os` (and thus :option:`-O2`), but reduces code
size further.
+ :option:`-Og` Like :option:`-O1`. In future versions, this option might
+ disable different optimizations in order to improve debuggability.
+
:option:`-O` Equivalent to :option:`-O2`.
:option:`-O4` and higher