R600: Move DataLayout to AMDGPUTargetMachine

This is a follow up to r227113.

It is now required to use the amdgcn target for SI and newer GPUs.

llvm-svn: 227316
diff --git a/llvm/test/CodeGen/R600/inline-asm.ll b/llvm/test/CodeGen/R600/inline-asm.ll
index 37e4486..efc2292 100644
--- a/llvm/test/CodeGen/R600/inline-asm.ll
+++ b/llvm/test/CodeGen/R600/inline-asm.ll
@@ -1,5 +1,5 @@
-; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s
-; RUN: llc < %s -march=r600 -mcpu=tonga -verify-machineinstrs | FileCheck %s
+; RUN: llc < %s -march=amdgcn -mcpu=SI -verify-machineinstrs | FileCheck %s
+; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck %s
 
 ; CHECK: {{^}}inline_asm:
 ; CHECK: s_endpgm