Add -femulated-tls flag to select the emulated TLS model.
This will be used for old targets like Android that do not
support ELF TLS models.
Differential Revision: http://reviews.llvm.org/D10524
llvm-svn: 243441
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index dd281ad..f5cb90e 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -4036,6 +4036,12 @@
Args.AddLastArg(CmdArgs, options::OPT_fstandalone_debug);
Args.AddLastArg(CmdArgs, options::OPT_fno_standalone_debug);
Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
+ // Emulated TLS is enabled by default on Android, and can be enabled manually
+ // with -femulated-tls.
+ bool EmulatedTLSDefault = Triple.getEnvironment() == llvm::Triple::Android;
+ if (Args.hasFlag(options::OPT_femulated_tls, options::OPT_fno_emulated_tls,
+ EmulatedTLSDefault))
+ CmdArgs.push_back("-femulated-tls");
// AltiVec language extensions aren't relevant for assembling.
if (!isa<PreprocessJobAction>(JA) || Output.getType() != types::TY_PP_Asm)
Args.AddLastArg(CmdArgs, options::OPT_faltivec);