clang  6.0.0svn
Ananas.cpp
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1 //===--- Ananas.cpp - Ananas 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 "Ananas.h"
11 #include "InputInfo.h"
12 #include "CommonArgs.h"
13 #include "clang/Config/config.h"
15 #include "clang/Driver/Driver.h"
16 #include "clang/Driver/Options.h"
17 #include "llvm/ADT/SmallString.h"
18 #include "llvm/Option/ArgList.h"
19 #include "llvm/Support/Path.h"
20 
21 using namespace clang::driver;
22 using namespace clang::driver::tools;
23 using namespace clang::driver::toolchains;
24 using namespace clang;
25 using namespace llvm::opt;
26 
28  const InputInfo &Output,
29  const InputInfoList &Inputs,
30  const ArgList &Args,
31  const char *LinkingOutput) const {
32  claimNoWarnArgs(Args);
33  ArgStringList CmdArgs;
34 
35  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
36 
37  CmdArgs.push_back("-o");
38  CmdArgs.push_back(Output.getFilename());
39 
40  for (const auto &II : Inputs)
41  CmdArgs.push_back(II.getFilename());
42 
43  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
44  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
45 }
46 
48  const InputInfo &Output,
49  const InputInfoList &Inputs,
50  const ArgList &Args,
51  const char *LinkingOutput) const {
52  const ToolChain &ToolChain = getToolChain();
53  const Driver &D = ToolChain.getDriver();
54  ArgStringList CmdArgs;
55 
56  // Silence warning for "clang -g foo.o -o foo"
57  Args.ClaimAllArgs(options::OPT_g_Group);
58  // and "clang -emit-llvm foo.o -o foo"
59  Args.ClaimAllArgs(options::OPT_emit_llvm);
60  // and for "clang -w foo.o -o foo". Other warning options are already
61  // handled somewhere else.
62  Args.ClaimAllArgs(options::OPT_w);
63 
64  if (!D.SysRoot.empty())
65  CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
66 
67  // Ananas only supports static linkage for now.
68  CmdArgs.push_back("-Bstatic");
69 
70  if (Output.isFilename()) {
71  CmdArgs.push_back("-o");
72  CmdArgs.push_back(Output.getFilename());
73  } else {
74  assert(Output.isNothing() && "Invalid output.");
75  }
76 
77  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
78  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
79  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
80  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
81  }
82 
83  Args.AddAllArgs(CmdArgs, options::OPT_L);
84  ToolChain.AddFilePathLibArgs(Args, CmdArgs);
85  Args.AddAllArgs(CmdArgs,
86  {options::OPT_T_Group, options::OPT_e, options::OPT_s,
87  options::OPT_t, options::OPT_Z_Flag, options::OPT_r});
88 
89  if (D.isUsingLTO())
90  AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin, D);
91 
92  AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
93 
94  if (ToolChain.ShouldLinkCXXStdlib(Args))
95  ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
96  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))
97  CmdArgs.push_back("-lc");
98 
99  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
100  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
101  CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
102  }
103 
104  const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
105  C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
106 }
107 
108 // Ananas - Ananas tool chain which can call as(1) and ld(1) directly.
109 
110 Ananas::Ananas(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
111  : Generic_ELF(D, Triple, Args) {
112  getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
113 }
114 
116  return new tools::ananas::Assembler(*this);
117 }
118 
119 Tool *Ananas::buildLinker() const { return new tools::ananas::Linker(*this); }
bool isUsingLTO() const
Returns true if we are performing any kind of LTO.
Definition: Driver.h:490
LTOKind getLTOMode() const
Get the specific kind of LTO being performed.
Definition: Driver.h:493
std::string GetLinkerPath() const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name...
Definition: ToolChain.cpp:399
const char * getFilename() const
Definition: InputInfo.h:84
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:23
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:391
void AddGoldPlugin(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, bool IsThinLTO, const Driver &D)
path_list & getFilePaths()
Definition: ToolChain.h:202
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:65
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:189
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: Ananas.cpp:27
void AddFilePathLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFilePathLibArgs - Add each thing in getFilePaths() as a "-L" option.
Definition: ToolChain.cpp:740
const Driver & getDriver() const
Definition: ToolChain.h:167
bool ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const
Returns if the C++ standard library should be linked in.
Definition: ToolChain.cpp:717
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 claimNoWarnArgs(const llvm::opt::ArgList &Args)
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:34
Tool * buildAssembler() const override
Definition: Ananas.cpp:115
bool isNothing() const
Definition: InputInfo.h:75
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: Ananas.cpp:47
bool isFilename() const
Definition: InputInfo.h:76
virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: ToolChain.cpp:723
Tool * buildLinker() const override
Definition: Ananas.cpp:119
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:73