1//===-- LoongArchTargetParser - Parser for LoongArch features --*- 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// This file implements a target parser to recognise LoongArch hardware features
10// such as CPU/ARCH and extension names.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/TargetParser/LoongArchTargetParser.h"
15#include "llvm/ADT/SmallVector.h"
16
17using namespace llvm;
18using namespace llvm::LoongArch;
19
20const FeatureInfo AllFeatures[] = {
21#define LOONGARCH_FEATURE(NAME, KIND) {NAME, KIND},
22#include "llvm/TargetParser/LoongArchTargetParser.def"
23};
24
25const ArchInfo AllArchs[] = {
26#define LOONGARCH_ARCH(NAME, KIND, FEATURES) \
27 {NAME, LoongArch::ArchKind::KIND, FEATURES},
28#include "llvm/TargetParser/LoongArchTargetParser.def"
29};
30
31bool LoongArch::isValidArchName(StringRef Arch) {
32 for (const auto A : AllArchs)
33 if (A.Name == Arch)
34 return true;
35 return false;
36}
37
38bool LoongArch::isValidFeatureName(StringRef Feature) {
39 if (Feature.starts_with(Prefix: "+") || Feature.starts_with(Prefix: "-"))
40 return false;
41 for (const auto &F : AllFeatures) {
42 StringRef CanonicalName =
43 F.Name.starts_with(Prefix: "+") ? F.Name.drop_front() : F.Name;
44 if (CanonicalName == Feature)
45 return true;
46 }
47 return false;
48}
49
50bool LoongArch::getArchFeatures(StringRef Arch,
51 std::vector<StringRef> &Features) {
52 for (const auto A : AllArchs) {
53 if (A.Name == Arch) {
54 for (const auto F : AllFeatures)
55 if ((A.Features & F.Kind) == F.Kind)
56 Features.push_back(x: F.Name);
57 return true;
58 }
59 }
60
61 if (Arch == "la64v1.0" || Arch == "la64v1.1") {
62 Features.push_back(x: "+64bit");
63 Features.push_back(x: "+d");
64 Features.push_back(x: "+lsx");
65 Features.push_back(x: "+ual");
66 if (Arch == "la64v1.1") {
67 Features.push_back(x: "+frecipe");
68 Features.push_back(x: "+lam-bh");
69 Features.push_back(x: "+lamcas");
70 Features.push_back(x: "+ld-seq-sa");
71 Features.push_back(x: "+div32");
72 Features.push_back(x: "+scq");
73 }
74 return true;
75 }
76
77 return false;
78}
79
80bool LoongArch::isValidCPUName(StringRef Name) { return isValidArchName(Arch: Name); }
81
82void LoongArch::fillValidCPUList(SmallVectorImpl<StringRef> &Values) {
83 for (const auto A : AllArchs)
84 Values.emplace_back(Args: A.Name);
85}
86
87StringRef LoongArch::getDefaultArch(bool Is64Bit) {
88 // TODO: use a real 32-bit arch name.
89 return Is64Bit ? "loongarch64" : "";
90}
91