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[driver] If we're only linking, don't warn about unused arguments which are 

obviously only used during compilation.
rdar://10386708

llvm-svn: 143813
This commit is contained in:
Chad Rosier 2011-11-05 15:56:33 +00:00
parent f7e0a31f8a
commit cda5732e52
1 changed files with 3 additions and 2 deletions
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5
clang/lib/Driver/Driver.cpp
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@ -1014,11 +1014,12 @@ void Driver::BuildActions(const ToolChain &TC, const DerivedArgList &Args,
// 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 @@ void Driver::BuildActions(const ToolChain &TC, const DerivedArgList &Args,
// 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);
}