Driver: Use the new ELF lld linker for AMDGPU

Summary: 'gnu-old' has been deprecated in favor or 'gnu'.

Reviewers: arsenm, ruiu, rafael

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D15953

llvm-svn: 257175

clang/lib/Driver/Tools.cpp

@@ -6520,10 +6520,6 @@ void amdgpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
 
   std::string Linker = getToolChain().GetProgramPath(getShortName());
   ArgStringList CmdArgs;
-  CmdArgs.push_back("-flavor");
-  CmdArgs.push_back("old-gnu");
-  CmdArgs.push_back("-target");
-  CmdArgs.push_back(Args.MakeArgString(getToolChain().getTripleString()));
   AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
   CmdArgs.push_back("-o");
   CmdArgs.push_back(Output.getFilename());

clang/lib/Driver/Tools.h

@@ -240,7 +240,7 @@ namespace amdgpu {
 
 class LLVM_LIBRARY_VISIBILITY Linker : public GnuTool {
 public:
-  Linker(const ToolChain &TC) : GnuTool("amdgpu::Linker", "lld", TC) {}
+  Linker(const ToolChain &TC) : GnuTool("amdgpu::Linker", "ld.lld", TC) {}
   bool isLinkJob() const override { return true; }
   bool hasIntegratedCPP() const override { return false; }
   void ConstructJob(Compilation &C, const JobAction &JA,

clang/test/Driver/amdgpu-toolchain.c

@@ -1,3 +1,3 @@
 // RUN: %clang -### -target amdgcn--amdhsa -x assembler -mcpu=kaveri %s 2>&1 | FileCheck -check-prefix=AS_LINK %s
 // AS_LINK: clang{{.*}} "-cc1as"
-// AS_LINK: lld{{.*}} "-flavor" "old-gnu" "-target" "amdgcn--amdhsa"
+// AS_LINK: ld.lld{{.*}}