Driver: adjust linker invocation for GNUTools

Adjust the driver to invoke the linker more similar to gcc.  -dynamic-linker is
only passed if -static and -shared are not part of the compiler (driver)
invocation.  Replicate the passing of -export-rdynamic as per the GCC link spec:

  %{!static: %{rdynamic:-export-dynamic} %{!shared:-dynamic-linker ...}}

This behaviour is consistent across all the targets that are supported, so no
need to conditionalise it on the target.

Resolves PR24245.

llvm-svn: 260019

1 files changed, 10 insertions, 7 deletions

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index b16c672..eb0b78a 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -8900,13 +8900,16 @@ void gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     CmdArgs.push_back("-shared");
   }
 
-  if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
-      Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb ||
-      (!Args.hasArg(options::OPT_static) &&
-       !Args.hasArg(options::OPT_shared))) {
-    CmdArgs.push_back("-dynamic-linker");
-    CmdArgs.push_back(Args.MakeArgString(
-        D.DyldPrefix + getLinuxDynamicLinker(Args, ToolChain)));
+  if (!Args.hasArg(options::OPT_static)) {
+    if (Args.hasArg(options::OPT_rdynamic))
+      CmdArgs.push_back("-export-dynamic");
+
+    if (!Args.hasArg(options::OPT_shared)) {
+      const std::string Loader =
+          D.DyldPrefix + getLinuxDynamicLinker(Args, ToolChain);
+      CmdArgs.push_back("-dynamic-linker");
+      CmdArgs.push_back(Args.MakeArgString(Loader));
+    }
   }
 
   CmdArgs.push_back("-o");