[driver] If we're only linking, don't warn about unused arguments which are
obviously only used during compilation.
rdar://10386708
llvm-svn: 143813
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 0a3d698..6873add1 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -1014,11 +1014,12 @@
// Construct the actions to perform.
ActionList LinkerInputs;
+ unsigned NumSteps = 0;
for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
types::ID InputType = Inputs[i].first;
const Arg *InputArg = Inputs[i].second;
- unsigned NumSteps = types::getNumCompilationPhases(InputType);
+ NumSteps = types::getNumCompilationPhases(InputType);
assert(NumSteps && "Invalid number of steps!");
// If the first step comes after the final phase we are doing as part of
@@ -1086,7 +1087,7 @@
// If we are linking, claim any options which are obviously only used for
// compilation.
- if (FinalPhase == phases::Link)
+ if (FinalPhase == phases::Link && (NumSteps == 1))
Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
}