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 | |
22 | namespace llvm { |
23 | |
24 | class DataLayout; |
25 | class Type; |
26 | struct fltSemantics; |
27 | |
28 | /// Construct a low-level type based on an LLVM type. |
29 | LLT 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. |
33 | MVT getMVTForLLT(LLT Ty); |
34 | EVT 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. |
38 | LLT getLLTForMVT(MVT Ty); |
39 | |
40 | /// Get the appropriate floating point arithmetic semantic based on the bit size |
41 | /// of the given scalar LLT. |
42 | const llvm::fltSemantics &getFltSemanticForLLT(LLT Ty); |
43 | } |
44 | |
45 | #endif // LLVM_CODEGEN_LOWLEVELTYPEUTILS_H |
46 | |