[Driver] Verify -mrecord-mcount in Driver, instead of CodeGen after D71627

GCC's x86 and s390 ports support -mrecord-mcount. Other ports reject the
option.

  aarch64-linux-gnu-gcc: error: unrecognized command line option ‘-mrecord-mcount’

Allowing this option can cause failures when building Linux kernel for
aarch64, powerpc64, etc, which will think the feature is available if
the clang command returns 0.

1 files changed, 9 insertions, 2 deletions

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 2ebfc763705..03100948f56 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -4995,8 +4995,15 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   if (TC.SupportsProfiling())
     Args.AddLastArg(CmdArgs, options::OPT_mnop_mcount);
 
-  if (TC.SupportsProfiling())
-    Args.AddLastArg(CmdArgs, options::OPT_mrecord_mcount);
+  if (TC.SupportsProfiling()) {
+    if (Arg *A = Args.getLastArg(options::OPT_mrecord_mcount)) {
+      if (TC.getArch() == llvm::Triple::systemz)
+        A->render(Args, CmdArgs);
+      else
+        D.Diag(diag::err_drv_unsupported_opt_for_target)
+            << A->getAsString(Args) << TripleStr;
+    }
+  }
 
   Args.AddLastArg(CmdArgs, options::OPT_mpacked_stack);