Driver/Darwin: Pass -demangle when linking, if the linker supports it.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110873 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index cc00804..c1a16ea 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2262,6 +2262,22 @@
ArgStringList &CmdArgs) const {
const Driver &D = getToolChain().getDriver();
+ unsigned Version[3] = { 0, 0, 0 };
+ if (Arg *A = Args.getLastArg(options::OPT_mlinker_version_EQ)) {
+ bool HadExtra;
+ if (!Driver::GetReleaseVersion(A->getValue(Args), Version[0],
+ Version[1], Version[2], HadExtra) ||
+ HadExtra)
+ D.Diag(clang::diag::err_drv_invalid_version_number)
+ << A->getAsString(Args);
+ }
+
+ // Newer linkers support -demangle, pass it if supported and not disabled by
+ // the user.
+ if (Version[0] >= 100 && !Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) {
+ CmdArgs.push_back("-demangle");
+ }
+
// Derived from the "link" spec.
Args.AddAllArgs(CmdArgs, options::OPT_static);
if (!Args.hasArg(options::OPT_static))