Clang Project

clang_source_code/lib/Basic/Targets/SystemZ.cpp
1//===--- SystemZ.cpp - Implement SystemZ target feature support -----------===//
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 SystemZ TargetInfo objects.
10//
11//===----------------------------------------------------------------------===//
12
13#include "SystemZ.h"
14#include "clang/Basic/Builtins.h"
15#include "clang/Basic/LangOptions.h"
16#include "clang/Basic/MacroBuilder.h"
17#include "clang/Basic/TargetBuiltins.h"
18#include "llvm/ADT/StringSwitch.h"
19
20using namespace clang;
21using namespace clang::targets;
22
23const Builtin::Info SystemZTargetInfo::BuiltinInfo[] = {
24#define BUILTIN(ID, TYPE, ATTRS)                                               \
25  {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr},
26#define TARGET_BUILTIN(ID, TYPE, ATTRS, FEATURE)                               \
27  {#ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, FEATURE},
28#include "clang/Basic/BuiltinsSystemZ.def"
29};
30
31const char *const SystemZTargetInfo::GCCRegNames[] = {
32    "r0",  "r1",  "r2",  "r3",  "r4",  "r5",  "r6",  "r7",
33    "r8",  "r9",  "r10""r11""r12""r13""r14""r15",
34    "f0",  "f2",  "f4",  "f6",  "f1",  "f3",  "f5",  "f7",
35    "f8",  "f10""f12""f14""f9",  "f11""f13""f15",
36    /*ap*/"""cc"/*fp*/""/*rp*/"""a0",  "a1",
37    "v16""v18""v20""v22""v17""v19""v21""v23",
38    "v24""v26""v28""v30""v25""v27""v29""v31"
39};
40
41const TargetInfo::AddlRegName GCCAddlRegNames[] = {
42    {{"v0"}, 16}, {{"v2"},  17}, {{"v4"},  18}, {{"v6"},  19},
43    {{"v1"}, 20}, {{"v3"},  21}, {{"v5"},  22}, {{"v7"},  23},
44    {{"v8"}, 24}, {{"v10"}, 25}, {{"v12"}, 26}, {{"v14"}, 27},
45    {{"v9"}, 28}, {{"v11"}, 29}, {{"v13"}, 30}, {{"v15"}, 31}
46};
47
48ArrayRef<const char *> SystemZTargetInfo::getGCCRegNames() const {
49  return llvm::makeArrayRef(GCCRegNames);
50}
51
52ArrayRef<TargetInfo::AddlRegName> SystemZTargetInfo::getGCCAddlRegNames() const {
53  return llvm::makeArrayRef(GCCAddlRegNames);
54}
55
56bool SystemZTargetInfo::validateAsmConstraint(
57    const char *&Name, TargetInfo::ConstraintInfo &Info) const {
58  switch (*Name) {
59  default:
60    return false;
61
62  case 'a'// Address register
63  case 'd'// Data register (equivalent to 'r')
64  case 'f'// Floating-point register
65  case 'v'// Vector register
66    Info.setAllowsRegister();
67    return true;
68
69  case 'I'// Unsigned 8-bit constant
70  case 'J'// Unsigned 12-bit constant
71  case 'K'// Signed 16-bit constant
72  case 'L'// Signed 20-bit displacement (on all targets we support)
73  case 'M'// 0x7fffffff
74    return true;
75
76  case 'Q'// Memory with base and unsigned 12-bit displacement
77  case 'R'// Likewise, plus an index
78  case 'S'// Memory with base and signed 20-bit displacement
79  case 'T'// Likewise, plus an index
80    Info.setAllowsMemory();
81    return true;
82  }
83}
84
85struct ISANameRevision {
86  llvm::StringLiteral Name;
87  int ISARevisionID;
88};
89static constexpr ISANameRevision ISARevisions[] = {
90  {{"arch8"}, 8}, {{"z10"}, 8},
91  {{"arch9"}, 9}, {{"z196"}, 9},
92  {{"arch10"}, 10}, {{"zEC12"}, 10},
93  {{"arch11"}, 11}, {{"z13"}, 11},
94  {{"arch12"}, 12}, {{"z14"}, 12}
95};
96
97int SystemZTargetInfo::getISARevision(StringRef Name) const {
98  const auto Rev =
99      llvm::find_if(ISARevisions, [Name](const ISANameRevision &CR) {
100        return CR.Name == Name;
101      });
102  if (Rev == std::end(ISARevisions))
103    return -1;
104  return Rev->ISARevisionID;
105}
106
107void SystemZTargetInfo::fillValidCPUList(
108    SmallVectorImpl<StringRef> &Values) const {
109  for (const ISANameRevision &Rev : ISARevisions)
110    Values.push_back(Rev.Name);
111}
112
113bool SystemZTargetInfo::hasFeature(StringRef Feature) const {
114  return llvm::StringSwitch<bool>(Feature)
115      .Case("systemz"true)
116      .Case("arch8", ISARevision >= 8)
117      .Case("arch9", ISARevision >= 9)
118      .Case("arch10", ISARevision >= 10)
119      .Case("arch11", ISARevision >= 11)
120      .Case("arch12", ISARevision >= 12)
121      .Case("htm", HasTransactionalExecution)
122      .Case("vx", HasVector)
123      .Default(false);
124}
125
126void SystemZTargetInfo::getTargetDefines(const LangOptions &Opts,
127                                         MacroBuilder &Builder) const {
128  Builder.defineMacro("__s390__");
129  Builder.defineMacro("__s390x__");
130  Builder.defineMacro("__zarch__");
131  Builder.defineMacro("__LONG_DOUBLE_128__");
132
133  Builder.defineMacro("__ARCH__", Twine(ISARevision));
134
135  Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1");
136  Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2");
137  Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4");
138  Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8");
139
140  if (HasTransactionalExecution)
141    Builder.defineMacro("__HTM__");
142  if (HasVector)
143    Builder.defineMacro("__VX__");
144  if (Opts.ZVector)
145    Builder.defineMacro("__VEC__""10302");
146}
147
148ArrayRef<Builtin::Info> SystemZTargetInfo::getTargetBuiltins() const {
149  return llvm::makeArrayRef(BuiltinInfo, clang::SystemZ::LastTSBuiltin -
150                                             Builtin::FirstTSBuiltin);
151}
152