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/AMDGPUTargetMachine.cpp b/lib/Target/R600/AMDGPUTargetMachine.cpp
new file mode 100644
index 0000000..98a3064
--- /dev/null
+++ b/lib/Target/R600/AMDGPUTargetMachine.cpp
@@ -0,0 +1,141 @@
+//===-- AMDGPUTargetMachine.cpp - TargetMachine for hw codegen targets-----===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// \brief The AMDGPU target machine contains all of the hardware specific
+/// information needed to emit code for R600 and SI GPUs.
+//
+//===----------------------------------------------------------------------===//
+
+#include "AMDGPUTargetMachine.h"
+#include "AMDGPU.h"
+#include "R600ISelLowering.h"
+#include "R600InstrInfo.h"
+#include "SIISelLowering.h"
+#include "SIInstrInfo.h"
+#include "llvm/Analysis/Passes.h"
+#include "llvm/Analysis/Verifier.h"
+#include "llvm/CodeGen/MachineFunctionAnalysis.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/CodeGen/Passes.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/PassManager.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/raw_os_ostream.h"
+#include "llvm/Transforms/IPO.h"
+#include "llvm/Transforms/Scalar.h"
+#include <llvm/CodeGen/Passes.h>
+
+using namespace llvm;
+
+extern "C" void LLVMInitializeR600Target() {
+ // Register the target
+ RegisterTargetMachine<AMDGPUTargetMachine> X(TheAMDGPUTarget);
+}
+
+AMDGPUTargetMachine::AMDGPUTargetMachine(const Target &T, StringRef TT,
+ StringRef CPU, StringRef FS,
+ TargetOptions Options,
+ Reloc::Model RM, CodeModel::Model CM,
+ CodeGenOpt::Level OptLevel
+)
+:
+ LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OptLevel),
+ Subtarget(TT, CPU, FS),
+ Layout(Subtarget.getDataLayout()),
+ FrameLowering(TargetFrameLowering::StackGrowsUp,
+ Subtarget.device()->getStackAlignment(), 0),
+ IntrinsicInfo(this),
+ InstrItins(&Subtarget.getInstrItineraryData()) {
+ // TLInfo uses InstrInfo so it must be initialized after.
+ if (Subtarget.device()->getGeneration() <= AMDGPUDeviceInfo::HD6XXX) {
+ InstrInfo = new R600InstrInfo(*this);
+ TLInfo = new R600TargetLowering(*this);
+ } else {
+ InstrInfo = new SIInstrInfo(*this);
+ TLInfo = new SITargetLowering(*this);
+ }
+}
+
+AMDGPUTargetMachine::~AMDGPUTargetMachine() {
+}
+
+namespace {
+class AMDGPUPassConfig : public TargetPassConfig {
+public:
+ AMDGPUPassConfig(AMDGPUTargetMachine *TM, PassManagerBase &PM)
+ : TargetPassConfig(TM, PM) {}
+
+ AMDGPUTargetMachine &getAMDGPUTargetMachine() const {
+ return getTM<AMDGPUTargetMachine>();
+ }
+
+ virtual bool addPreISel();
+ virtual bool addInstSelector();
+ virtual bool addPreRegAlloc();
+ virtual bool addPostRegAlloc();
+ virtual bool addPreSched2();
+ virtual bool addPreEmitPass();
+};
+} // End of anonymous namespace
+
+TargetPassConfig *AMDGPUTargetMachine::createPassConfig(PassManagerBase &PM) {
+ return new AMDGPUPassConfig(this, PM);
+}
+
+bool
+AMDGPUPassConfig::addPreISel() {
+ return false;
+}
+
+bool AMDGPUPassConfig::addInstSelector() {
+ addPass(createAMDGPUPeepholeOpt(*TM));
+ addPass(createAMDGPUISelDag(getAMDGPUTargetMachine()));
+ return false;
+}
+
+bool AMDGPUPassConfig::addPreRegAlloc() {
+ const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
+
+ if (ST.device()->getGeneration() > AMDGPUDeviceInfo::HD6XXX) {
+ addPass(createSIAssignInterpRegsPass(*TM));
+ }
+ addPass(createAMDGPUConvertToISAPass(*TM));
+ if (ST.device()->getGeneration() > AMDGPUDeviceInfo::HD6XXX) {
+ addPass(createSIFixSGPRLivenessPass(*TM));
+ }
+ return false;
+}
+
+bool AMDGPUPassConfig::addPostRegAlloc() {
+ return false;
+}
+
+bool AMDGPUPassConfig::addPreSched2() {
+
+ addPass(&IfConverterID);
+ return false;
+}
+
+bool AMDGPUPassConfig::addPreEmitPass() {
+ addPass(createAMDGPUCFGPreparationPass(*TM));
+ addPass(createAMDGPUCFGStructurizerPass(*TM));
+
+ const AMDGPUSubtarget &ST = TM->getSubtarget<AMDGPUSubtarget>();
+ if (ST.device()->getGeneration() <= AMDGPUDeviceInfo::HD6XXX) {
+ addPass(createR600ExpandSpecialInstrsPass(*TM));
+ addPass(&FinalizeMachineBundlesID);
+ } else {
+ addPass(createSILowerLiteralConstantsPass(*TM));
+ addPass(createSILowerControlFlowPass(*TM));
+ }
+
+ return false;
+}
+