1 files changed, 93 insertions, 0 deletions
diff --git a/llvm/lib/Target/SPIRV/SPIRVSubtarget.h b/llvm/lib/Target/SPIRV/SPIRVSubtarget.h
new file mode 100644
index 000000000000..a6332cfefa8e
--- /dev/null
+++ b/llvm/lib/Target/SPIRV/SPIRVSubtarget.h
@@ -0,0 +1,93 @@
+//===-- SPIRVSubtarget.h - SPIR-V Subtarget Information --------*- C++ -*--===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the SPIR-V specific subclass of TargetSubtargetInfo.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_SPIRV_SPIRVSUBTARGET_H
+#define LLVM_LIB_TARGET_SPIRV_SPIRVSUBTARGET_H
+
+#include "SPIRVCallLowering.h"
+#include "SPIRVFrameLowering.h"
+#include "SPIRVISelLowering.h"
+#include "SPIRVInstrInfo.h"
+#include "llvm/CodeGen/GlobalISel/CallLowering.h"
+#include "llvm/CodeGen/GlobalISel/InstructionSelector.h"
+#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
+#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
+#include "llvm/CodeGen/TargetSubtargetInfo.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/Target/TargetMachine.h"
+
+#define GET_SUBTARGETINFO_HEADER
+#include "SPIRVGenSubtargetInfo.inc"
+
+namespace llvm {
+class StringRef;
+class SPIRVGlobalRegistry;
+class SPIRVTargetMachine;
+
+class SPIRVSubtarget : public SPIRVGenSubtargetInfo {
+private:
+  const unsigned PointerSize;
+  uint32_t SPIRVVersion;
+
+  std::unique_ptr<SPIRVGlobalRegistry> GR;
+
+  SPIRVInstrInfo InstrInfo;
+  SPIRVFrameLowering FrameLowering;
+  SPIRVTargetLowering TLInfo;
+
+  // GlobalISel related APIs.
+  std::unique_ptr<CallLowering> CallLoweringInfo;
+  std::unique_ptr<RegisterBankInfo> RegBankInfo;
+  std::unique_ptr<LegalizerInfo> Legalizer;
+  std::unique_ptr<InstructionSelector> InstSelector;
+
+public:
+  // This constructor initializes the data members to match that
+  // of the specified triple.
+  SPIRVSubtarget(const Triple &TT, const std::string &CPU,
+                 const std::string &FS, const SPIRVTargetMachine &TM);
+  SPIRVSubtarget &initSubtargetDependencies(StringRef CPU, StringRef FS);
+
+  // Parses features string setting specified subtarget options.
+  // The definition of this function is auto generated by tblgen.
+  void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
+  unsigned getPointerSize() const { return PointerSize; }
+  bool canDirectlyComparePointers() const;
+  uint32_t getSPIRVVersion() const { return SPIRVVersion; };
+  SPIRVGlobalRegistry *getSPIRVGlobalRegistry() const { return GR.get(); }
+
+  const CallLowering *getCallLowering() const override {
+    return CallLoweringInfo.get();
+  }
+  const RegisterBankInfo *getRegBankInfo() const override {
+    return RegBankInfo.get();
+  }
+  const LegalizerInfo *getLegalizerInfo() const override {
+    return Legalizer.get();
+  }
+  InstructionSelector *getInstructionSelector() const override {
+    return InstSelector.get();
+  }
+  const SPIRVInstrInfo *getInstrInfo() const override { return &InstrInfo; }
+  const SPIRVFrameLowering *getFrameLowering() const override {
+    return &FrameLowering;
+  }
+  const SPIRVTargetLowering *getTargetLowering() const override {
+    return &TLInfo;
+  }
+  const SPIRVRegisterInfo *getRegisterInfo() const override {
+    return &InstrInfo.getRegisterInfo();
+  }
+};
+} // namespace llvm
+
+#endif // LLVM_LIB_TARGET_SPIRV_SPIRVSUBTARGET_H