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