Driver: Support -Oz as an alias for -Os.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119003 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 954ec8d723fd4d8a42a99c560e5841b4e23412a7..223576e71d181ea10224f6519fb94f6c179606f9 100644 (file)
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1139,6 +1139,10 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
     else if (A->getOption().matches(options::OPT_O) &&
              A->getValue(Args)[0] == '\0')
       CmdArgs.push_back("-O2");
+    else if (A->getOption().matches(options::OPT_O) &&
+             A->getValue(Args)[0] == 'z' &&
+             A->getValue(Args)[1] == '\0')
+      CmdArgs.push_back("-Os");
     else
       A->render(Args, CmdArgs);
   }