clang  12.0.0git
Myriad.cpp
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1 //===--- Myriad.cpp - Myriad ToolChain Implementations ----------*- 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 #include "Myriad.h"
10 #include "CommonArgs.h"
12 #include "clang/Driver/Driver.h"
14 #include "clang/Driver/Options.h"
15 #include "llvm/Option/ArgList.h"
16 
17 using namespace clang::driver;
18 using namespace clang::driver::toolchains;
19 using namespace clang;
20 using namespace llvm::opt;
21 
23 
25  const InputInfo &Output,
26  const InputInfoList &Inputs,
27  const ArgList &Args,
28  const char *LinkingOutput) const {
29  ArgStringList CmdArgs;
30  assert(Inputs.size() == 1);
31  const InputInfo &II = Inputs[0];
32  assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
33  II.getType() == types::TY_PP_CXX);
34 
35  if (JA.getKind() == Action::PreprocessJobClass) {
36  Args.ClaimAllArgs();
37  CmdArgs.push_back("-E");
38  } else {
39  assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
40  CmdArgs.push_back("-S");
41  CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
42  }
43  CmdArgs.push_back("-DMYRIAD2");
44 
45  // Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
46  // flags, 'g' flags, 'M' flags, optimize flags, warning options,
47  // mcpu flags, mllvm flags, and Xclang flags.
48  // These are spelled the same way in clang and moviCompile.
49  Args.AddAllArgsExcept(
50  CmdArgs,
51  {options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
52  options::OPT_D, options::OPT_U, options::OPT_f_Group,
53  options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
54  options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
55  options::OPT_mllvm, options::OPT_Xclang},
56  {options::OPT_fno_split_dwarf_inlining});
57  Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
58 
59  // If we're producing a dependency file, and assembly is the final action,
60  // then the name of the target in the dependency file should be the '.o'
61  // file, not the '.s' file produced by this step. For example, instead of
62  // /tmp/mumble.s: mumble.c .../someheader.h
63  // the filename on the lefthand side should be "mumble.o"
64  if (Args.getLastArg(options::OPT_MF) && !Args.getLastArg(options::OPT_MT) &&
65  C.getActions().size() == 1 &&
66  C.getActions()[0]->getKind() == Action::AssembleJobClass) {
67  Arg *A = Args.getLastArg(options::OPT_o);
68  if (A) {
69  CmdArgs.push_back("-MT");
70  CmdArgs.push_back(Args.MakeArgString(A->getValue()));
71  }
72  }
73 
74  CmdArgs.push_back(II.getFilename());
75  CmdArgs.push_back("-o");
76  CmdArgs.push_back(Output.getFilename());
77 
78  std::string Exec =
79  Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
80  C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
81  Args.MakeArgString(Exec), CmdArgs,
82  Inputs));
83 }
84 
86  const InputInfo &Output,
87  const InputInfoList &Inputs,
88  const ArgList &Args,
89  const char *LinkingOutput) const {
90  ArgStringList CmdArgs;
91 
92  assert(Inputs.size() == 1);
93  const InputInfo &II = Inputs[0];
94  assert(II.getType() == types::TY_PP_Asm); // Require preprocessed asm input.
95  assert(Output.getType() == types::TY_Object);
96 
97  CmdArgs.push_back("-no6thSlotCompression");
98  const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
99  if (CPUArg)
100  CmdArgs.push_back(
101  Args.MakeArgString("-cv:" + StringRef(CPUArg->getValue())));
102  CmdArgs.push_back("-noSPrefixing");
103  CmdArgs.push_back("-a"); // Mystery option.
104  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
105  for (const Arg *A : Args.filtered(options::OPT_I, options::OPT_isystem)) {
106  A->claim();
107  CmdArgs.push_back(
108  Args.MakeArgString(std::string("-i:") + A->getValue(0)));
109  }
110  CmdArgs.push_back(II.getFilename());
111  CmdArgs.push_back(
112  Args.MakeArgString(std::string("-o:") + Output.getFilename()));
113 
114  std::string Exec =
115  Args.MakeArgString(getToolChain().GetProgramPath("moviAsm"));
116  C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
117  Args.MakeArgString(Exec), CmdArgs,
118  Inputs));
119 }
120 
122  const InputInfo &Output,
123  const InputInfoList &Inputs,
124  const ArgList &Args,
125  const char *LinkingOutput) const {
126  const auto &TC =
127  static_cast<const toolchains::MyriadToolChain &>(getToolChain());
128  const llvm::Triple &T = TC.getTriple();
129  ArgStringList CmdArgs;
130  bool UseStartfiles =
131  !Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
132  bool UseDefaultLibs =
133  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
134  // Silence warning if the args contain both -nostdlib and -stdlib=.
135  Args.getLastArg(options::OPT_stdlib_EQ);
136 
137  if (T.getArch() == llvm::Triple::sparc)
138  CmdArgs.push_back("-EB");
139  else // SHAVE assumes little-endian, and sparcel is expressly so.
140  CmdArgs.push_back("-EL");
141 
142  // The remaining logic is mostly like gnutools::Linker::ConstructJob,
143  // but we never pass through a --sysroot option and various other bits.
144  // For example, there are no sanitizers (yet) nor gold linker.
145 
146  // Eat some arguments that may be present but have no effect.
147  Args.ClaimAllArgs(options::OPT_g_Group);
148  Args.ClaimAllArgs(options::OPT_w);
149  Args.ClaimAllArgs(options::OPT_static_libgcc);
150 
151  if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
152  CmdArgs.push_back("-s");
153 
154  CmdArgs.push_back("-o");
155  CmdArgs.push_back(Output.getFilename());
156 
157  if (UseStartfiles) {
158  // If you want startfiles, it means you want the builtin crti and crtbegin,
159  // but not crt0. Myriad link commands provide their own crt0.o as needed.
160  CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
161  CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
162  }
163 
164  Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
165  options::OPT_e, options::OPT_s, options::OPT_t,
166  options::OPT_Z_Flag, options::OPT_r});
167 
168  TC.AddFilePathLibArgs(Args, CmdArgs);
169 
170  bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
171  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
172 
173  if (UseDefaultLibs) {
174  if (NeedsSanitizerDeps)
175  linkSanitizerRuntimeDeps(TC, CmdArgs);
176  if (C.getDriver().CCCIsCXX()) {
177  if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) {
178  CmdArgs.push_back("-lc++");
179  CmdArgs.push_back("-lc++abi");
180  } else
181  CmdArgs.push_back("-lstdc++");
182  }
183  if (T.getOS() == llvm::Triple::RTEMS) {
184  CmdArgs.push_back("--start-group");
185  CmdArgs.push_back("-lc");
186  CmdArgs.push_back("-lgcc"); // circularly dependent on rtems
187  // You must provide your own "-L" option to enable finding these.
188  CmdArgs.push_back("-lrtemscpu");
189  CmdArgs.push_back("-lrtemsbsp");
190  CmdArgs.push_back("--end-group");
191  } else {
192  CmdArgs.push_back("-lc");
193  CmdArgs.push_back("-lgcc");
194  }
195  }
196  if (UseStartfiles) {
197  CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
198  CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
199  }
200 
201  std::string Exec =
202  Args.MakeArgString(TC.GetProgramPath("sparc-myriad-rtems-ld"));
203  C.addCommand(
204  std::make_unique<Command>(JA, *this, ResponseFileSupport::AtFileCurCP(),
205  Args.MakeArgString(Exec), CmdArgs, Inputs));
206 }
207 
208 MyriadToolChain::MyriadToolChain(const Driver &D, const llvm::Triple &Triple,
209  const ArgList &Args)
210  : Generic_ELF(D, Triple, Args) {
211  // If a target of 'sparc-myriad-elf' is specified to clang, it wants to use
212  // 'sparc-myriad--elf' (note the unknown OS) as the canonical triple.
213  // This won't work to find gcc. Instead we give the installation detector an
214  // extra triple, which is preferable to further hacks of the logic that at
215  // present is based solely on getArch(). In particular, it would be wrong to
216  // choose the myriad installation when targeting a non-myriad sparc install.
217  switch (Triple.getArch()) {
218  default:
219  D.Diag(clang::diag::err_target_unsupported_arch)
220  << Triple.getArchName() << "myriad";
221  LLVM_FALLTHROUGH;
222  case llvm::Triple::shave:
223  return;
224  case llvm::Triple::sparc:
225  case llvm::Triple::sparcel:
226  GCCInstallation.init(Triple, Args, {"sparc-myriad-rtems"});
227  }
228 
229  if (GCCInstallation.isValid()) {
230  // This directory contains crt{i,n,begin,end}.o as well as libgcc.
231  // These files are tied to a particular version of gcc.
232  SmallString<128> CompilerSupportDir(GCCInstallation.getInstallPath());
233  addPathIfExists(D, CompilerSupportDir, getFilePaths());
234  }
235  // libstd++ and libc++ must both be found in this one place.
236  addPathIfExists(D, D.Dir + "/../sparc-myriad-rtems/lib", getFilePaths());
237 }
238 
240 
241 void MyriadToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
242  ArgStringList &CC1Args) const {
243  if (!DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
244  addSystemInclude(DriverArgs, CC1Args, getDriver().SysRoot + "/include");
245 }
246 
248  const llvm::opt::ArgList &DriverArgs,
249  llvm::opt::ArgStringList &CC1Args) const {
250  std::string Path(getDriver().getInstalledDir());
251  addSystemInclude(DriverArgs, CC1Args, Path + "/../include/c++/v1");
252 }
253 
255  const llvm::opt::ArgList &DriverArgs,
256  llvm::opt::ArgStringList &CC1Args) const {
257  StringRef LibDir = GCCInstallation.getParentLibPath();
258  const GCCVersion &Version = GCCInstallation.getVersion();
259  StringRef TripleStr = GCCInstallation.getTriple().str();
262  LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
263  "", TripleStr, "", "", Multilib.includeSuffix(), DriverArgs, CC1Args);
264 }
265 
266 // MyriadToolChain handles several triples:
267 // {shave,sparc{,el}}-myriad-{rtems,unknown}-elf
269  // The inherited method works fine if not targeting the SHAVE.
271  return ToolChain::SelectTool(JA);
272  switch (JA.getKind()) {
275  if (!Compiler)
276  Compiler.reset(new tools::SHAVE::Compiler(*this));
277  return Compiler.get();
279  if (!Assembler)
280  Assembler.reset(new tools::SHAVE::Assembler(*this));
281  return Assembler.get();
282  default:
283  return ToolChain::getTool(JA.getKind());
284  }
285 }
286 
288  return new tools::Myriad::Linker(*this);
289 }
290 
292  return SanitizerKind::Address;
293 }
const llvm::Triple & getTriple() const
Get the GCC triple for the detected install.
Definition: Gnu.h:224
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:109
Struct to store and manipulate GCC versions.
Definition: Gnu.h:161
MyriadToolChain - A tool chain using either clang or the external compiler installed by the Movidius ...
Definition: Myriad.h:69
const char * getFilename() const
Definition: InputInfo.h:83
GCCInstallationDetector GCCInstallation
Definition: Gnu.h:284
void linkSanitizerRuntimeDeps(const ToolChain &TC, llvm::opt::ArgStringList &CmdArgs)
const std::string & includeSuffix() const
Get the include directory suffix.
Definition: Multilib.h:67
std::string Dir
The path the driver executable was in, as invoked from the command line.
Definition: Driver.h:120
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
path_list & getFilePaths()
Definition: ToolChain.h:242
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:59
types::ID getType() const
Definition: InputInfo.h:77
bool isShaveCompilation(const llvm::Triple &T) const
Definition: Myriad.h:90
const GCCVersion & getVersion() const
Get the detected GCC version string.
Definition: Gnu.h:243
ActionClass getKind() const
Definition: Action.h:142
void addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Definition: Myriad.cpp:247
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
This corresponds to a single GCC Multilib, or a segment of one controlled by a command line flag...
Definition: Multilib.h:28
void addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Definition: Myriad.cpp:254
void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add the clang cc1 arguments for system include paths.
Definition: Myriad.cpp:241
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Myriad.cpp:85
const Driver & getDriver() const
Definition: ToolChain.h:204
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:173
static void addSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory to CC1 arguments.
Definition: ToolChain.cpp:859
StringRef getParentLibPath() const
Get the detected GCC parent lib path.
Definition: Gnu.h:230
MyriadToolChain(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Myriad.cpp:208
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Myriad.cpp:121
Dataflow Directional Tag Classes.
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
std::string SysRoot
sysroot, if present
Definition: Driver.h:148
Tool - Information on a specific compilation tool.
Definition: Tool.h:32
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: Myriad.cpp:24
ActionList & getActions()
Definition: Compilation.h:190
Tool * SelectTool(const JobAction &JA) const override
Choose a tool to use to handle the action JA.
Definition: Myriad.cpp:268
std::string Text
The unparsed text of the version.
Definition: Gnu.h:163
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
const Driver & getDriver() const
Definition: Compilation.h:133
const llvm::Triple & getTriple() const
Definition: ToolChain.h:206
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:324
static constexpr ResponseFileSupport None()
Returns a ResponseFileSupport indicating that response files are not supported.
Definition: Job.h:77
static constexpr ResponseFileSupport AtFileCurCP()
Definition: Job.h:91
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:63
virtual Tool * SelectTool(const JobAction &JA) const
Choose a tool to use to handle the action JA.
Definition: ToolChain.cpp:532
bool addLibStdCXXIncludePaths(Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple, StringRef TargetMultiarchTriple, Twine IncludeSuffix, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Helper to add the variant paths of a libstdc++ installation.
Definition: Gnu.cpp:2920
void init(const llvm::Triple &TargetTriple, const llvm::opt::ArgList &Args, ArrayRef< std::string > ExtraTripleAliases=None)
Initialize a GCCInstallationDetector from the driver.
Definition: Gnu.cpp:1878
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
Definition: Myriad.cpp:291
Tool * buildLinker() const override
Definition: Myriad.cpp:287
StringRef getInstallPath() const
Get the detected GCC installation path.
Definition: Gnu.h:227
const Multilib & getMultilib() const
Get the detected Multilib.
Definition: Gnu.h:233
bool isValid() const
Check whether we detected a valid GCC install.
Definition: Gnu.h:221