Don't warn about -funit-at-a-time, and reject -fno-unit-at-a-time.
- We could just warn about -fno-unit-at-a-time, but in practice people using it
probably aren't going to get what they want out of clang.
Also, use "clang" specified error for unsupported things instead of driver
unsupported error.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72272 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 91e39dd..fd071df 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -399,7 +399,7 @@
if ((Unsupported = Args.getLastArg(options::OPT_MG)) ||
(Unsupported = Args.getLastArg(options::OPT_MQ)) ||
(Unsupported = Args.getLastArg(options::OPT_iframework)))
- D.Diag(clang::diag::err_drv_unsupported_opt)
+ D.Diag(clang::diag::err_drv_clang_unsupported)
<< Unsupported->getOption().getName();
Args.AddAllArgs(CmdArgs, options::OPT_v);
@@ -549,6 +549,14 @@
CmdArgs.push_back("-fdollars-in-identifiers=0");
}
+ // -funit-at-a-time is default, and we don't support -fno-unit-at-a-time for
+ // practical purposes.
+ if (Arg *A = Args.getLastArg(options::OPT_funit_at_a_time,
+ options::OPT_fno_unit_at_a_time)) {
+ if (A->getOption().matches(options::OPT_fno_unit_at_a_time))
+ D.Diag(clang::diag::err_drv_clang_unsupported) << A->getAsString(Args);
+ }
+
Args.AddLastArg(CmdArgs, options::OPT_dM);
Args.AddLastArg(CmdArgs, options::OPT_dD);