include/llvm/CodeGen/GlobalISel/Types.h

   1 //===- llvm/CodeGen/GlobalISel/Types.h - Types used by GISel ----*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 ///
   9 /// \file
  10 /// This file describes high level types that are used by several passes or
  11 /// APIs involved in the GlobalISel pipeline.
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_CODEGEN_GLOBALISEL_TYPES_H
  15 #define LLVM_CODEGEN_GLOBALISEL_TYPES_H
  16
  17 #include "llvm/ADT/DenseMap.h"
  18
  19 namespace llvm {
  20
  21 class Value;
  22
  23 /// Map a value to a virtual register.
  24 /// For now, we chose to map aggregate types to on single virtual
  25 /// register. This might be revisited if it turns out to be inefficient.
  26 /// PR26161 tracks that.
  27 /// Note: We need to expose this type to the target hooks for thing like
  28 /// ABI lowering that would be used during IRTranslation.
  29 using ValueToVReg = DenseMap<const Value *, unsigned>;
  30
  31 } // end namespace llvm
  32
  33 #endif // LLVM_CODEGEN_GLOBALISEL_TYPES_H