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

1 files changed, 87 insertions, 0 deletions

diff --git a/lib/Target/R600/AMDGPUSubtarget.cpp b/lib/Target/R600/AMDGPUSubtarget.cpp
new file mode 100644
index 00000000000..0f356a1c3f1
--- /dev/null
+++ b/lib/Target/R600/AMDGPUSubtarget.cpp
@@ -0,0 +1,87 @@
+//===-- AMDGPUSubtarget.cpp - AMDGPU Subtarget Information ----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// \brief Implements the AMDGPU specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#include "AMDGPUSubtarget.h"
+
+using namespace llvm;
+
+#define GET_SUBTARGETINFO_ENUM
+#define GET_SUBTARGETINFO_TARGET_DESC
+#define GET_SUBTARGETINFO_CTOR
+#include "AMDGPUGenSubtargetInfo.inc"
+
+AMDGPUSubtarget::AMDGPUSubtarget(StringRef TT, StringRef CPU, StringRef FS) :
+  AMDGPUGenSubtargetInfo(TT, CPU, FS), DumpCode(false) {
+    InstrItins = getInstrItineraryForCPU(CPU);
+
+  memset(CapsOverride, 0, sizeof(*CapsOverride)
+      * AMDGPUDeviceInfo::MaxNumberCapabilities);
+  // Default card
+  StringRef GPU = CPU;
+  Is64bit = false;
+  DefaultSize[0] = 64;
+  DefaultSize[1] = 1;
+  DefaultSize[2] = 1;
+  ParseSubtargetFeatures(GPU, FS);
+  DevName = GPU;
+  Device = AMDGPUDeviceInfo::getDeviceFromName(DevName, this, Is64bit);
+}
+
+AMDGPUSubtarget::~AMDGPUSubtarget() {
+  delete Device;
+}
+
+bool
+AMDGPUSubtarget::isOverride(AMDGPUDeviceInfo::Caps caps) const {
+  assert(caps < AMDGPUDeviceInfo::MaxNumberCapabilities &&
+      "Caps index is out of bounds!");
+  return CapsOverride[caps];
+}
+bool
+AMDGPUSubtarget::is64bit() const  {
+  return Is64bit;
+}
+bool
+AMDGPUSubtarget::isTargetELF() const {
+  return false;
+}
+size_t
+AMDGPUSubtarget::getDefaultSize(uint32_t dim) const {
+  if (dim > 3) {
+    return 1;
+  } else {
+    return DefaultSize[dim];
+  }
+}
+
+std::string
+AMDGPUSubtarget::getDataLayout() const {
+    if (!Device) {
+        return std::string("e-p:32:32:32-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-a0:0:64");
+    }
+    return Device->getDataLayout();
+}
+
+std::string
+AMDGPUSubtarget::getDeviceName() const {
+  return DevName;
+}
+const AMDGPUDevice *
+AMDGPUSubtarget::device() const {
+  return Device;
+}