1//== llvm/CodeGen/LowLevelTypeUtils.h -------------------------- -*- 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/// \file
9/// Implement a low-level type suitable for MachineInstr level instruction
10/// selection.
11///
12/// This provides the CodeGen aspects of LowLevelType, such as Type conversion.
13///
14//===----------------------------------------------------------------------===//
15
16#ifndef LLVM_CODEGEN_LOWLEVELTYPEUTILS_H
17#define LLVM_CODEGEN_LOWLEVELTYPEUTILS_H
18
19#include "llvm/CodeGen/ValueTypes.h"
20#include "llvm/CodeGenTypes/LowLevelType.h"
21
22namespace llvm {
23
24class DataLayout;
25class Type;
26struct fltSemantics;
27
28/// Construct a low-level type based on an LLVM type.
29LLT getLLTForType(Type &Ty, const DataLayout &DL);
30
31/// Get a rough equivalent of an MVT for a given LLT. MVT can't distinguish
32/// pointers, so these will convert to a plain integer.
33MVT getMVTForLLT(LLT Ty);
34EVT getApproximateEVTForLLT(LLT Ty, const DataLayout &DL, LLVMContext &Ctx);
35
36/// Get a rough equivalent of an LLT for a given MVT. LLT does not yet support
37/// scalarable vector types, and will assert if used.
38LLT getLLTForMVT(MVT Ty);
39
40/// Get the appropriate floating point arithmetic semantic based on the bit size
41/// of the given scalar LLT.
42const llvm::fltSemantics &getFltSemanticForLLT(LLT Ty);
43}
44
45#endif // LLVM_CODEGEN_LOWLEVELTYPEUTILS_H
46

source code of llvm/include/llvm/CodeGen/LowLevelTypeUtils.h