Add R600 backend

A new backend supporting AMD GPUs: Radeon HD2XXX - HD7XXX

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169915 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/R600/AMDILSIDevice.cpp b/lib/Target/R600/AMDILSIDevice.cpp
new file mode 100644
index 0000000..7c2710f
--- /dev/null
+++ b/lib/Target/R600/AMDILSIDevice.cpp
@@ -0,0 +1,45 @@
+//===-- AMDILSIDevice.cpp - Device Info for Southern Islands GPUs ---------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+/// \file
+//==-----------------------------------------------------------------------===//
+#include "AMDILSIDevice.h"
+#include "AMDILEvergreenDevice.h"
+#include "AMDILNIDevice.h"
+#include "AMDGPUSubtarget.h"
+
+using namespace llvm;
+
+AMDGPUSIDevice::AMDGPUSIDevice(AMDGPUSubtarget *ST)
+  : AMDGPUEvergreenDevice(ST) {
+}
+AMDGPUSIDevice::~AMDGPUSIDevice() {
+}
+
+size_t
+AMDGPUSIDevice::getMaxLDSSize() const {
+  if (usesHardware(AMDGPUDeviceInfo::LocalMem)) {
+    return MAX_LDS_SIZE_900;
+  } else {
+    return 0;
+  }
+}
+
+uint32_t
+AMDGPUSIDevice::getGeneration() const {
+  return AMDGPUDeviceInfo::HD7XXX;
+}
+
+std::string
+AMDGPUSIDevice::getDataLayout() const {
+  return std::string("e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16"
+      "-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f80:32:32"
+      "-v16:16:16-v24:32:32-v32:32:32-v48:64:64-v64:64:64"
+      "-v96:128:128-v128:128:128-v192:256:256-v256:256:256"
+      "-v512:512:512-v1024:1024:1024-v2048:2048:2048"
+      "-n8:16:32:64");
+}