LLVM 19.0.0git
LoongArchTargetTransformInfo.cpp
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1//===-- LoongArchTargetTransformInfo.cpp - LoongArch specific TTI ---------===//
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/// This file implements a TargetTransformInfo analysis pass specific to the
10/// LoongArch target machine. It uses the target's detailed information to
11/// provide more precise answers to certain TTI queries, while letting the
12/// target independent and default TTI implementations handle the rest.
13///
14//===----------------------------------------------------------------------===//
15
17
18using namespace llvm;
19
20#define DEBUG_TYPE "loongarchtti"
21
25 switch (K) {
27 return TypeSize::getFixed(ST->is64Bit() ? 64 : 32);
29 if (!ST->hasExpAutoVec())
30 return DefSize;
31 if (ST->hasExtLASX())
32 return TypeSize::getFixed(256);
33 if (ST->hasExtLSX())
34 return TypeSize::getFixed(128);
35 [[fallthrough]];
37 return DefSize;
38 }
39
40 llvm_unreachable("Unsupported register kind");
41}
42
43// TODO: Implement more hooks to provide TTI machinery for LoongArch.
This file a TargetTransformInfo::Concept conforming object specific to the LoongArch target machine.
TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const
TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const
static constexpr TypeSize getFixed(ScalarTy ExactSize)
Definition: TypeSize.h:332
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18