1 files changed, 47 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/include/llvm/CodeGen/MultiHazardRecognizer.h b/contrib/llvm-project/llvm/include/llvm/CodeGen/MultiHazardRecognizer.h
new file mode 100644
index 000000000000..9846045ff014
--- /dev/null
+++ b/contrib/llvm-project/llvm/include/llvm/CodeGen/MultiHazardRecognizer.h
@@ -0,0 +1,47 @@
+//=- llvm/CodeGen/MultiHazardRecognizer.h - Scheduling Support ----*- 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 implements the MultiHazardRecognizer class, which is a wrapper
+// for a set of ScheduleHazardRecognizer instances
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H
+#define LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/CodeGen/ScheduleHazardRecognizer.h"
+
+namespace llvm {
+
+class MachineInstr;
+class SUnit;
+
+class MultiHazardRecognizer : public ScheduleHazardRecognizer {
+  SmallVector<std::unique_ptr<ScheduleHazardRecognizer>, 4> Recognizers;
+
+public:
+  MultiHazardRecognizer() = default;
+  void AddHazardRecognizer(std::unique_ptr<ScheduleHazardRecognizer> &&);
+
+  bool atIssueLimit() const override;
+  HazardType getHazardType(SUnit *, int Stalls = 0) override;
+  void Reset() override;
+  void EmitInstruction(SUnit *) override;
+  void EmitInstruction(MachineInstr *) override;
+  unsigned PreEmitNoops(SUnit *) override;
+  unsigned PreEmitNoops(MachineInstr *) override;
+  bool ShouldPreferAnother(SUnit *) override;
+  void AdvanceCycle() override;
+  void RecedeCycle() override;
+  void EmitNoop() override;
+};
+
+} // end namespace llvm
+
+#endif // LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H