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Driver: When linking, don't warn about unused arguments which are obviously only 

used during compilation.
 - There is no easy way to define this group properly, unfortunately, and maybe
   this is a losing strategy. For now this is unambiguous more friendly, though.

llvm-svn: 91940
This commit is contained in:
Daniel Dunbar 2009-12-22 23:19:32 +00:00
parent ad46e4416b
commit c7a67b7877
2 changed files with 20 additions and 11 deletions
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26
clang/include/clang/Driver/Options.td
View File

@ -17,23 +17,27 @@ include "OptParser.td"
/////////
// Groups
def I_Group : OptionGroup<"<I group>">;
def M_Group : OptionGroup<"<M group>">;
// Meta-group which defines
def CompileOnly_Group : OptionGroup<"<CompileOnly group>">;
def I_Group : OptionGroup<"<I group>">, Group<CompileOnly_Group>;
def M_Group : OptionGroup<"<M group>">, Group<CompileOnly_Group>;
def T_Group : OptionGroup<"<T group>">;
def O_Group : OptionGroup<"<O group>">;
def W_Group : OptionGroup<"<W group>">;
def O_Group : OptionGroup<"<O group>">, Group<CompileOnly_Group>;
def W_Group : OptionGroup<"<W group>">, Group<CompileOnly_Group>;
def X_Group : OptionGroup<"<X group>">;
def a_Group : OptionGroup<"<a group>">;
def d_Group : OptionGroup<"<d group>">;
def f_Group : OptionGroup<"<f group>">;
def f_Group : OptionGroup<"<f group>">, Group<CompileOnly_Group>;
def g_Group : OptionGroup<"<g group>">;
def i_Group : OptionGroup<"<i group>">;
def i_Group : OptionGroup<"<i group>">, Group<CompileOnly_Group>;
def clang_i_Group : OptionGroup<"<clang i group>">, Group<i_Group>;
def m_Group : OptionGroup<"<m group>">;
def m_x86_Features_Group : OptionGroup<"<m x86 features group>">;
def m_Group : OptionGroup<"<m group>">, Group<CompileOnly_Group>;
def m_x86_Features_Group : OptionGroup<"<m x86 features group>">, Group<m_Group>;
def u_Group : OptionGroup<"<u group>">;
def pedantic_Group : OptionGroup<"<pedantic group>">;
def pedantic_Group : OptionGroup<"<pedantic group>">,
Group<CompileOnly_Group>;
// Temporary groups for clang options which we know we don't support,
// but don't want to verbosely warn the user about.
@ -116,7 +120,7 @@ def A : JoinedOrSeparate<"-A">;
def B : JoinedOrSeparate<"-B">, Flags<[Unsupported]>;
def CC : Flag<"-CC">;
def C : Flag<"-C">;
def D : JoinedOrSeparate<"-D">;
def D : JoinedOrSeparate<"-D">, Group<CompileOnly_Group>;
def E : Flag<"-E">, Flags<[DriverOption]>,
HelpText<"Only run the preprocessor">;
def F : JoinedOrSeparate<"-F">;
@ -152,7 +156,7 @@ def Tbss : JoinedOrSeparate<"-Tbss">, Group<T_Group>;
def Tdata : JoinedOrSeparate<"-Tdata">, Group<T_Group>;
def Ttext : JoinedOrSeparate<"-Ttext">, Group<T_Group>;
def T : JoinedOrSeparate<"-T">, Group<T_Group>;
def U : JoinedOrSeparate<"-U">;
def U : JoinedOrSeparate<"-U">, Group<CompileOnly_Group>;
def V : JoinedOrSeparate<"-V">, Flags<[DriverOption, Unsupported]>;
def Wa_COMMA : CommaJoined<"-Wa,">,
HelpText<"Pass the comma separated arguments in <arg> to the assembler">,

5
clang/lib/Driver/Driver.cpp
View File

@ -711,6 +711,11 @@ void Driver::BuildActions(const ArgList &Args, ActionList &Actions) const {
// Add a link action if necessary.
if (!LinkerInputs.empty())
Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image));
// If we are linking, claim any options which are obviously only used for
// compilation.
if (FinalPhase == phases::Link)
Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
}
Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase,