clang  7.0.0svn
Myriad.cpp
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1 //===--- Myriad.cpp - Myriad ToolChain Implementations ----------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "Myriad.h"
11 #include "CommonArgs.h"
13 #include "clang/Driver/Driver.h"
15 #include "clang/Driver/Options.h"
16 #include "llvm/Option/ArgList.h"
17 
18 using namespace clang::driver;
19 using namespace clang::driver::toolchains;
20 using namespace clang;
21 using namespace llvm::opt;
22 
24 
26  const InputInfo &Output,
27  const InputInfoList &Inputs,
28  const ArgList &Args,
29  const char *LinkingOutput) const {
30  ArgStringList CmdArgs;
31  assert(Inputs.size() == 1);
32  const InputInfo &II = Inputs[0];
33  assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
34  II.getType() == types::TY_PP_CXX);
35 
36  if (JA.getKind() == Action::PreprocessJobClass) {
37  Args.ClaimAllArgs();
38  CmdArgs.push_back("-E");
39  } else {
40  assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
41  CmdArgs.push_back("-S");
42  CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
43  }
44  CmdArgs.push_back("-DMYRIAD2");
45 
46  // Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
47  // flags, 'g' flags, 'M' flags, optimize flags, warning options,
48  // mcpu flags, mllvm flags, and Xclang flags.
49  // These are spelled the same way in clang and moviCompile.
50  Args.AddAllArgsExcept(
51  CmdArgs,
52  {options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
53  options::OPT_D, options::OPT_U, options::OPT_f_Group,
54  options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
55  options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
56  options::OPT_mllvm, options::OPT_Xclang},
57  {options::OPT_fno_split_dwarf_inlining});
58  Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
59 
60  // If we're producing a dependency file, and assembly is the final action,
61  // then the name of the target in the dependency file should be the '.o'
62  // file, not the '.s' file produced by this step. For example, instead of
63  // /tmp/mumble.s: mumble.c .../someheader.h
64  // the filename on the lefthand side should be "mumble.o"
65  if (Args.getLastArg(options::OPT_MF) && !Args.getLastArg(options::OPT_MT) &&
66  C.getActions().size() == 1 &&
67  C.getActions()[0]->getKind() == Action::AssembleJobClass) {
68  Arg *A = Args.getLastArg(options::OPT_o);
69  if (A) {
70  CmdArgs.push_back("-MT");
71  CmdArgs.push_back(Args.MakeArgString(A->getValue()));
72  }
73  }
74 
75  CmdArgs.push_back(II.getFilename());
76  CmdArgs.push_back("-o");
77  CmdArgs.push_back(Output.getFilename());
78 
79  std::string Exec =
80  Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
81  C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
82  CmdArgs, 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(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
117  CmdArgs, Inputs));
118 }
119 
121  const InputInfo &Output,
122  const InputInfoList &Inputs,
123  const ArgList &Args,
124  const char *LinkingOutput) const {
125  const auto &TC =
126  static_cast<const toolchains::MyriadToolChain &>(getToolChain());
127  const llvm::Triple &T = TC.getTriple();
128  ArgStringList CmdArgs;
129  bool UseStartfiles =
130  !Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
131  bool UseDefaultLibs =
132  !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
133  // Silence warning if the args contain both -nostdlib and -stdlib=.
134  Args.getLastArg(options::OPT_stdlib_EQ);
135 
136  if (T.getArch() == llvm::Triple::sparc)
137  CmdArgs.push_back("-EB");
138  else // SHAVE assumes little-endian, and sparcel is expressly so.
139  CmdArgs.push_back("-EL");
140 
141  // The remaining logic is mostly like gnutools::Linker::ConstructJob,
142  // but we never pass through a --sysroot option and various other bits.
143  // For example, there are no sanitizers (yet) nor gold linker.
144 
145  // Eat some arguments that may be present but have no effect.
146  Args.ClaimAllArgs(options::OPT_g_Group);
147  Args.ClaimAllArgs(options::OPT_w);
148  Args.ClaimAllArgs(options::OPT_static_libgcc);
149 
150  if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
151  CmdArgs.push_back("-s");
152 
153  CmdArgs.push_back("-o");
154  CmdArgs.push_back(Output.getFilename());
155 
156  if (UseStartfiles) {
157  // If you want startfiles, it means you want the builtin crti and crtbegin,
158  // but not crt0. Myriad link commands provide their own crt0.o as needed.
159  CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
160  CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
161  }
162 
163  Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
164  options::OPT_e, options::OPT_s, options::OPT_t,
165  options::OPT_Z_Flag, options::OPT_r});
166 
167  TC.AddFilePathLibArgs(Args, CmdArgs);
168 
169  bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
170  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
171 
172  if (UseDefaultLibs) {
173  if (NeedsSanitizerDeps)
174  linkSanitizerRuntimeDeps(TC, CmdArgs);
175  if (C.getDriver().CCCIsCXX()) {
176  if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) {
177  CmdArgs.push_back("-lc++");
178  CmdArgs.push_back("-lc++abi");
179  } else
180  CmdArgs.push_back("-lstdc++");
181  }
182  if (T.getOS() == llvm::Triple::RTEMS) {
183  CmdArgs.push_back("--start-group");
184  CmdArgs.push_back("-lc");
185  CmdArgs.push_back("-lgcc"); // circularly dependent on rtems
186  // You must provide your own "-L" option to enable finding these.
187  CmdArgs.push_back("-lrtemscpu");
188  CmdArgs.push_back("-lrtemsbsp");
189  CmdArgs.push_back("--end-group");
190  } else {
191  CmdArgs.push_back("-lc");
192  CmdArgs.push_back("-lgcc");
193  }
194  }
195  if (UseStartfiles) {
196  CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
197  CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
198  }
199 
200  std::string Exec =
201  Args.MakeArgString(TC.GetProgramPath("sparc-myriad-rtems-ld"));
202  C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
203  CmdArgs, Inputs));
204 }
205 
206 MyriadToolChain::MyriadToolChain(const Driver &D, const llvm::Triple &Triple,
207  const ArgList &Args)
208  : Generic_ELF(D, Triple, Args) {
209  // If a target of 'sparc-myriad-elf' is specified to clang, it wants to use
210  // 'sparc-myriad--elf' (note the unknown OS) as the canonical triple.
211  // This won't work to find gcc. Instead we give the installation detector an
212  // extra triple, which is preferable to further hacks of the logic that at
213  // present is based solely on getArch(). In particular, it would be wrong to
214  // choose the myriad installation when targeting a non-myriad sparc install.
215  switch (Triple.getArch()) {
216  default:
217  D.Diag(clang::diag::err_target_unsupported_arch)
218  << Triple.getArchName() << "myriad";
219  LLVM_FALLTHROUGH;
220  case llvm::Triple::shave:
221  return;
222  case llvm::Triple::sparc:
223  case llvm::Triple::sparcel:
224  GCCInstallation.init(Triple, Args, {"sparc-myriad-rtems"});
225  }
226 
227  if (GCCInstallation.isValid()) {
228  // This directory contains crt{i,n,begin,end}.o as well as libgcc.
229  // These files are tied to a particular version of gcc.
230  SmallString<128> CompilerSupportDir(GCCInstallation.getInstallPath());
231  addPathIfExists(D, CompilerSupportDir, getFilePaths());
232  }
233  // libstd++ and libc++ must both be found in this one place.
234  addPathIfExists(D, D.Dir + "/../sparc-myriad-rtems/lib", getFilePaths());
235 }
236 
238 
239 void MyriadToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
240  ArgStringList &CC1Args) const {
241  if (!DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
242  addSystemInclude(DriverArgs, CC1Args, getDriver().SysRoot + "/include");
243 }
244 
246  const llvm::opt::ArgList &DriverArgs,
247  llvm::opt::ArgStringList &CC1Args) const {
248  std::string Path(getDriver().getInstalledDir());
249  addSystemInclude(DriverArgs, CC1Args, Path + "/../include/c++/v1");
250 }
251 
253  const llvm::opt::ArgList &DriverArgs,
254  llvm::opt::ArgStringList &CC1Args) const {
255  StringRef LibDir = GCCInstallation.getParentLibPath();
256  const GCCVersion &Version = GCCInstallation.getVersion();
257  StringRef TripleStr = GCCInstallation.getTriple().str();
260  LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
261  "", TripleStr, "", "", Multilib.includeSuffix(), DriverArgs, CC1Args);
262 }
263 
264 // MyriadToolChain handles several triples:
265 // {shave,sparc{,el}}-myriad-{rtems,unknown}-elf
267  // The inherited method works fine if not targeting the SHAVE.
269  return ToolChain::SelectTool(JA);
270  switch (JA.getKind()) {
273  if (!Compiler)
274  Compiler.reset(new tools::SHAVE::Compiler(*this));
275  return Compiler.get();
277  if (!Assembler)
278  Assembler.reset(new tools::SHAVE::Assembler(*this));
279  return Assembler.get();
280  default:
281  return ToolChain::getTool(JA.getKind());
282  }
283 }
284 
286  return new tools::Myriad::Linker(*this);
287 }
288 
290  return SanitizerKind::Address;
291 }
const llvm::Triple & getTriple() const
Get the GCC triple for the detected install.
Definition: Gnu.h:220
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:110
Struct to store and manipulate GCC versions.
Definition: Gnu.h:157
MyriadToolChain - A tool chain using either clang or the external compiler installed by the Movidius ...
Definition: Myriad.h:70
const char * getFilename() const
Definition: InputInfo.h:84
GCCInstallationDetector GCCInstallation
Definition: Gnu.h:280
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:121
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:23
path_list & getFilePaths()
Definition: ToolChain.h:216
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:78
bool isShaveCompilation(const llvm::Triple &T) const
Definition: Myriad.h:91
const GCCVersion & getVersion() const
Get the detected GCC version string.
Definition: Gnu.h:239
ActionClass getKind() const
Definition: Action.h:139
void addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Definition: Myriad.cpp:245
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:206
This corresponds to a single GCC Multilib, or a segment of one controlled by a command line flag...
Definition: Multilib.h:29
void addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Definition: Myriad.cpp:252
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:239
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:181
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:174
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:687
StringRef getParentLibPath() const
Get the detected GCC parent lib path.
Definition: Gnu.h:226
MyriadToolChain(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Myriad.cpp:206
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:120
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:149
Tool - Information on a specific compilation tool.
Definition: Tool.h:34
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:25
ActionList & getActions()
Definition: Compilation.h:191
Tool * SelectTool(const JobAction &JA) const override
Choose a tool to use to handle the action JA.
Definition: Myriad.cpp:266
uint64_t SanitizerMask
Definition: Sanitizers.h:26
std::string Text
The unparsed text of the version.
Definition: Gnu.h:159
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:46
const Driver & getDriver() const
Definition: Compilation.h:134
const llvm::Triple & getTriple() const
Definition: ToolChain.h:183
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:280
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:61
virtual Tool * SelectTool(const JobAction &JA) const
Choose a tool to use to handle the action JA.
Definition: ToolChain.cpp:408
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:2466
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:1648
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
Definition: Myriad.cpp:289
Tool * buildLinker() const override
Definition: Myriad.cpp:285
StringRef getInstallPath() const
Get the detected GCC installation path.
Definition: Gnu.h:223
const Multilib & getMultilib() const
Get the detected Multilib.
Definition: Gnu.h:229
bool isValid() const
Check whether we detected a valid GCC install.
Definition: Gnu.h:217