clang 17.0.0git
SystemZ.h
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1//===--- SystemZ.h - Declare SystemZ target feature support -----*- 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 declares SystemZ TargetInfo objects.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_SYSTEMZ_H
14#define LLVM_CLANG_LIB_BASIC_TARGETS_SYSTEMZ_H
15
18#include "llvm/Support/Compiler.h"
19#include "llvm/TargetParser/Triple.h"
20
21namespace clang {
22namespace targets {
23
24class LLVM_LIBRARY_VISIBILITY SystemZTargetInfo : public TargetInfo {
25
26 static const char *const GCCRegNames[];
27 std::string CPU;
28 int ISARevision;
29 bool HasTransactionalExecution;
30 bool HasVector;
31 bool SoftFloat;
32
33public:
34 SystemZTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
35 : TargetInfo(Triple), CPU("z10"), ISARevision(8),
36 HasTransactionalExecution(false), HasVector(false), SoftFloat(false) {
37 IntMaxType = SignedLong;
38 Int64Type = SignedLong;
39 TLSSupported = true;
40 IntWidth = IntAlign = 32;
41 LongWidth = LongLongWidth = LongAlign = LongLongAlign = 64;
42 Int128Align = 64;
43 PointerWidth = PointerAlign = 64;
44 LongDoubleWidth = 128;
45 LongDoubleAlign = 64;
46 LongDoubleFormat = &llvm::APFloat::IEEEquad();
47 DefaultAlignForAttributeAligned = 64;
48 MinGlobalAlign = 16;
49 if (Triple.isOSzOS()) {
50 // All vector types are default aligned on an 8-byte boundary, even if the
51 // vector facility is not available. That is different from Linux.
52 MaxVectorAlign = 64;
53 // Compared to Linux/ELF, the data layout differs only in that name
54 // mangling is GOFF.
55 resetDataLayout(
56 "E-m:l-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64");
57 } else
58 resetDataLayout("E-m:e-i1:8:16-i8:8:16-i64:64-f128:64"
59 "-v128:64-a:8:16-n32:64");
60 MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
61 HasStrictFP = true;
62 }
63
64 void getTargetDefines(const LangOptions &Opts,
65 MacroBuilder &Builder) const override;
66
67 ArrayRef<Builtin::Info> getTargetBuiltins() const override;
68
69 ArrayRef<const char *> getGCCRegNames() const override;
70
72 // No aliases.
73 return std::nullopt;
74 }
75
76 ArrayRef<TargetInfo::AddlRegName> getGCCAddlRegNames() const override;
77
78 bool isSPRegName(StringRef RegName) const override {
79 return RegName.equals("r15");
80 }
81
82 bool validateAsmConstraint(const char *&Name,
83 TargetInfo::ConstraintInfo &info) const override;
84
85 std::string convertConstraint(const char *&Constraint) const override {
86 switch (Constraint[0]) {
87 case 'p': // Keep 'p' constraint.
88 return std::string("p");
89 case 'Z':
90 switch (Constraint[1]) {
91 case 'Q': // Address with base and unsigned 12-bit displacement
92 case 'R': // Likewise, plus an index
93 case 'S': // Address with base and signed 20-bit displacement
94 case 'T': // Likewise, plus an index
95 // "^" hints llvm that this is a 2 letter constraint.
96 // "Constraint++" is used to promote the string iterator
97 // to the next constraint.
98 return std::string("^") + std::string(Constraint++, 2);
99 default:
100 break;
101 }
102 break;
103 default:
104 break;
105 }
106 return TargetInfo::convertConstraint(Constraint);
107 }
108
109 std::string_view getClobbers() const override {
110 // FIXME: Is this really right?
111 return "";
112 }
113
115 return TargetInfo::SystemZBuiltinVaList;
116 }
117
118 int getISARevision(StringRef Name) const;
119
120 bool isValidCPUName(StringRef Name) const override {
121 return getISARevision(Name) != -1;
122 }
123
124 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
125
126 bool isValidTuneCPUName(StringRef Name) const override {
127 return isValidCPUName(Name);
128 }
129
131 fillValidCPUList(Values);
132 }
133
134 bool setCPU(const std::string &Name) override {
135 CPU = Name;
136 ISARevision = getISARevision(CPU);
137 return ISARevision != -1;
138 }
139
140 bool
141 initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
142 StringRef CPU,
143 const std::vector<std::string> &FeaturesVec) const override {
144 int ISARevision = getISARevision(CPU);
145 if (ISARevision >= 10)
146 Features["transactional-execution"] = true;
147 if (ISARevision >= 11)
148 Features["vector"] = true;
149 if (ISARevision >= 12)
150 Features["vector-enhancements-1"] = true;
151 if (ISARevision >= 13)
152 Features["vector-enhancements-2"] = true;
153 if (ISARevision >= 14)
154 Features["nnp-assist"] = true;
155 return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
156 }
157
158 bool handleTargetFeatures(std::vector<std::string> &Features,
159 DiagnosticsEngine &Diags) override {
160 HasTransactionalExecution = false;
161 HasVector = false;
162 SoftFloat = false;
163 for (const auto &Feature : Features) {
164 if (Feature == "+transactional-execution")
165 HasTransactionalExecution = true;
166 else if (Feature == "+vector")
167 HasVector = true;
168 else if (Feature == "+soft-float")
169 SoftFloat = true;
170 }
171 HasVector &= !SoftFloat;
172
173 // If we use the vector ABI, vector types are 64-bit aligned. The
174 // DataLayout string is always set to this alignment as it is not a
175 // requirement that it follows the alignment emitted by the front end. It
176 // is assumed generally that the Datalayout should reflect only the
177 // target triple and not any specific feature.
178 if (HasVector && !getTriple().isOSzOS())
179 MaxVectorAlign = 64;
180
181 return true;
182 }
183
184 bool hasFeature(StringRef Feature) const override;
185
187 switch (CC) {
188 case CC_C:
189 case CC_Swift:
190 case CC_OpenCLKernel:
191 return CCCR_OK;
192 case CC_SwiftAsync:
193 return CCCR_Error;
194 default:
195 return CCCR_Warning;
196 }
197 }
198
199 StringRef getABI() const override {
200 if (HasVector)
201 return "vector";
202 return "";
203 }
204
205 const char *getLongDoubleMangling() const override { return "g"; }
206
207 bool hasBitIntType() const override { return true; }
208
209 int getEHDataRegisterNumber(unsigned RegNo) const override {
210 return RegNo < 4 ? 6 + RegNo : -1;
211 }
212};
213} // namespace targets
214} // namespace clang
215#endif // LLVM_CLANG_LIB_BASIC_TARGETS_SYSTEMZ_H
static bool hasFeature(StringRef Feature, const LangOptions &LangOpts, const TargetInfo &Target)
Determine whether a translation unit built using the current language options has the given feature.
Definition: Module.cpp:100
Defines the clang::TargetOptions class.
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:192
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:82
Exposes information about the current target.
Definition: TargetInfo.h:206
BuiltinVaListKind
The different kinds of __builtin_va_list types defined by the target implementation.
Definition: TargetInfo.h:290
Options for controlling the target.
Definition: TargetOptions.h:26
bool hasBitIntType() const override
Determine whether the _BitInt type is supported on this target.
Definition: SystemZ.h:207
const char * getLongDoubleMangling() const override
Return the mangled code of long double.
Definition: SystemZ.h:205
bool isSPRegName(StringRef RegName) const override
Definition: SystemZ.h:78
std::string convertConstraint(const char *&Constraint) const override
Definition: SystemZ.h:85
bool isValidCPUName(StringRef Name) const override
brief Determine whether this TargetInfo supports the given CPU name.
Definition: SystemZ.h:120
ArrayRef< TargetInfo::GCCRegAlias > getGCCRegAliases() const override
Definition: SystemZ.h:71
bool handleTargetFeatures(std::vector< std::string > &Features, DiagnosticsEngine &Diags) override
Perform initialization based on the user configured set of features (e.g., +sse4).
Definition: SystemZ.h:158
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: SystemZ.h:186
bool setCPU(const std::string &Name) override
Target the specified CPU.
Definition: SystemZ.h:134
void fillValidTuneCPUList(SmallVectorImpl< StringRef > &Values) const override
Fill a SmallVectorImpl with the valid values for tuning CPU.
Definition: SystemZ.h:130
BuiltinVaListKind getBuiltinVaListKind() const override
Returns the kind of __builtin_va_list type that should be used with this target.
Definition: SystemZ.h:114
int getEHDataRegisterNumber(unsigned RegNo) const override
Return the register number that __builtin_eh_return_regno would return with the specified argument.
Definition: SystemZ.h:209
std::string_view getClobbers() const override
Returns a string of target-specific clobbers, in LLVM format.
Definition: SystemZ.h:109
bool initFeatureMap(llvm::StringMap< bool > &Features, DiagnosticsEngine &Diags, StringRef CPU, const std::vector< std::string > &FeaturesVec) const override
Initialize the map with the default set of target features for the CPU this should include all legal ...
Definition: SystemZ.h:141
StringRef getABI() const override
Get the ABI currently in use.
Definition: SystemZ.h:199
bool isValidTuneCPUName(StringRef Name) const override
brief Determine whether this TargetInfo supports the given CPU name for
Definition: SystemZ.h:126
SystemZTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
Definition: SystemZ.h:34
Defines the clang::TargetInfo interface.
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:269
@ CC_Swift
Definition: Specifiers.h:284
@ CC_OpenCLKernel
Definition: Specifiers.h:283
@ CC_C
Definition: Specifiers.h:270
@ CC_SwiftAsync
Definition: Specifiers.h:285
#define false
Definition: stdbool.h:22