[llvm] [Xtensa] Initial codegen support from IR (PR #78548)

[Andrei Safronov via llvm-commits]

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@@ -0,0 +1,43 @@
+//===-- XtensaInstrInfo.h - Xtensa Instruction Information ------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// 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 contains the Xtensa implementation of the TargetInstrInfo class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_XTENSA_XTENSAINSTRINFO_H
+#define LLVM_LIB_TARGET_XTENSA_XTENSAINSTRINFO_H
+
+#include "Xtensa.h"
+#include "XtensaRegisterInfo.h"
+#include "llvm/CodeGen/TargetInstrInfo.h"
+#include "llvm/CodeGen/TargetRegisterInfo.h"
+
+#define GET_INSTRINFO_HEADER
+
+#include "XtensaGenInstrInfo.inc"
+
+namespace llvm {
+
+class XtensaTargetMachine;
+class XtensaSubtarget;
+class XtensaInstrInfo : public XtensaGenInstrInfo {
+  const XtensaRegisterInfo RI;
+  XtensaSubtarget &STI;
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andreisfr wrote:

Fixed, I implemented "getSubtarget()" function.

https://github.com/llvm/llvm-project/pull/78548