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-rw-r--r--lib/Driver/Tools.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 25aab58660..ee86da6c34 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2281,6 +2281,10 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
A->render(Args, CmdArgs);
}
+ // Don't warn about unused -flto. This can happen when we're preprocessing or
+ // precompiling.
+ Args.ClaimAllArgs(options::OPT_flto);
+
Args.AddAllArgs(CmdArgs, options::OPT_W_Group);
if (Args.hasFlag(options::OPT_pedantic, options::OPT_no_pedantic, false))
CmdArgs.push_back("-pedantic");