LLVM 20.0.0git
LowLevelTypeUtils.h
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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
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.
43}
44
45#endif // LLVM_CODEGEN_LOWLEVELTYPEUTILS_H
MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL
RelocType Type
Definition: COFFYAML.cpp:391
Implement a low-level type suitable for MachineInstr level instruction selection.
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
EVT getApproximateEVTForLLT(LLT Ty, const DataLayout &DL, LLVMContext &Ctx)
const llvm::fltSemantics & getFltSemanticForLLT(LLT Ty)
Get the appropriate floating point arithmetic semantic based on the bit size of the given scalar LLT.
MVT getMVTForLLT(LLT Ty)
Get a rough equivalent of an MVT for a given LLT.
LLT getLLTForMVT(MVT Ty)
Get a rough equivalent of an LLT for a given MVT.
LLT getLLTForType(Type &Ty, const DataLayout &DL)
Construct a low-level type based on an LLVM type.