From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Daniel Bertalan <dani@danielbertalan.dev>
Date: Thu, 14 Apr 2022 10:12:54 +0200
Subject: [PATCH] [Driver] Default to -ftls-model=initial-exec on Minerva

This is a hack to make Clang use the initial-exec TLS model instead of
the default local-exec when building code for Minerva.

This patch should be removed when we implement proper TLS support.
---
 clang/lib/Driver/ToolChains/Clang.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 77554aa2c..84eebee36 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -6100,7 +6100,13 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   Args.AddLastArg(CmdArgs, options::OPT_fvisibility_inlines_hidden_static_local_var,
                            options::OPT_fno_visibility_inlines_hidden_static_local_var);
   Args.AddLastArg(CmdArgs, options::OPT_fvisibility_global_new_delete_hidden);
-  Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
+  if (Triple.isOSMinerva()) {
+    StringRef tls_model =
+        Args.getLastArgValue(options::OPT_ftlsmodel_EQ, "initial-exec");
+    CmdArgs.push_back(Args.MakeArgString("-ftls-model=" + tls_model));
+  } else {
+    Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
+  }
 
   if (Args.hasFlag(options::OPT_fnew_infallible,
                    options::OPT_fno_new_infallible, false))