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clang-1/lib/Driver/Driver.cpp

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//===--- Driver.cpp - Clang GCC Compatible Driver -----------------------*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Driver/Driver.h"
#include "clang/Driver/Action.h"
#include "clang/Driver/Arg.h"
#include "clang/Driver/ArgList.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/HostInfo.h"
#include "clang/Driver/Job.h"
#include "clang/Driver/Option.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/Tool.h"
#include "clang/Driver/ToolChain.h"
#include "clang/Driver/Types.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Path.h"
#include "llvm/System/Program.h"
#include "InputInfo.h"
#include <map>
using namespace clang::driver;
Driver::Driver(const char *_Name, const char *_Dir,
const char *_DefaultHostTriple,
const char *_DefaultImageName,
Diagnostic &_Diags)
: Opts(new OptTable()), Diags(_Diags),
Name(_Name), Dir(_Dir), DefaultHostTriple(_DefaultHostTriple),
DefaultImageName(_DefaultImageName),
Host(0),
CCCIsCXX(false), CCCEcho(false), CCCPrintBindings(false),
CCCNoClang(false), CCCNoClangCXX(false), CCCNoClangCPP(false),
SuppressMissingInputWarning(false)
{
}
Driver::~Driver() {
delete Opts;
delete Host;
}
ArgList *Driver::ParseArgStrings(const char **ArgBegin, const char **ArgEnd) {
llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
ArgList *Args = new ArgList(ArgBegin, ArgEnd);
// FIXME: Handle '@' args (or at least error on them).
unsigned Index = 0, End = ArgEnd - ArgBegin;
while (Index < End) {
// gcc's handling of empty arguments doesn't make
// sense, but this is not a common use case. :)
//
// We just ignore them here (note that other things may
// still take them as arguments).
if (Args->getArgString(Index)[0] == '\0') {
++Index;
continue;
}
unsigned Prev = Index;
Arg *A = getOpts().ParseOneArg(*Args, Index);
assert(Index > Prev && "Parser failed to consume argument.");
// Check for missing argument error.
if (!A) {
assert(Index >= End && "Unexpected parser error.");
Diag(clang::diag::err_drv_missing_argument)
<< Args->getArgString(Prev)
<< (Index - Prev - 1);
break;
}
if (A->getOption().isUnsupported()) {
Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args);
continue;
}
Args->append(A);
}
return Args;
}
Compilation *Driver::BuildCompilation(int argc, const char **argv) {
llvm::PrettyStackTraceString CrashInfo("Compilation construction");
// FIXME: Handle environment options which effect driver behavior,
// somewhere (client?). GCC_EXEC_PREFIX, COMPILER_PATH,
// LIBRARY_PATH, LPATH, CC_PRINT_OPTIONS, QA_OVERRIDE_GCC3_OPTIONS.
// FIXME: What are we going to do with -V and -b?
// FIXME: Handle CCC_ADD_ARGS.
// FIXME: This stuff needs to go into the Compilation, not the
// driver.
bool CCCPrintOptions = false, CCCPrintActions = false;
const char **Start = argv + 1, **End = argv + argc;
const char *HostTriple = DefaultHostTriple.c_str();
// Read -ccc args.
//
// FIXME: We need to figure out where this behavior should
// live. Most of it should be outside in the client; the parts that
// aren't should have proper options, either by introducing new ones
// or by overloading gcc ones like -V or -b.
for (; Start != End && memcmp(*Start, "-ccc-", 5) == 0; ++Start) {
const char *Opt = *Start + 5;
if (!strcmp(Opt, "print-options")) {
CCCPrintOptions = true;
} else if (!strcmp(Opt, "print-phases")) {
CCCPrintActions = true;
} else if (!strcmp(Opt, "print-bindings")) {
CCCPrintBindings = true;
} else if (!strcmp(Opt, "cxx")) {
CCCIsCXX = true;
} else if (!strcmp(Opt, "echo")) {
CCCEcho = true;
} else if (!strcmp(Opt, "no-clang")) {
CCCNoClang = true;
} else if (!strcmp(Opt, "no-clang-cxx")) {
CCCNoClangCXX = true;
} else if (!strcmp(Opt, "no-clang-cpp")) {
CCCNoClangCPP = true;
} else if (!strcmp(Opt, "clang-archs")) {
assert(Start+1 < End && "FIXME: -ccc- argument handling.");
const char *Cur = *++Start;
for (;;) {
const char *Next = strchr(Cur, ',');
if (Next) {
CCCClangArchs.insert(std::string(Cur, Next));
Cur = Next + 1;
} else {
CCCClangArchs.insert(std::string(Cur));
break;
}
}
} else if (!strcmp(Opt, "host-triple")) {
assert(Start+1 < End && "FIXME: -ccc- argument handling.");
HostTriple = *++Start;
} else {
// FIXME: Error handling.
llvm::errs() << "invalid option: " << *Start << "\n";
exit(1);
}
}
ArgList *Args = ParseArgStrings(Start, End);
Host = GetHostInfo(HostTriple);
// The compilation takes ownership of Args.
Compilation *C = new Compilation(*this, *Host->getToolChain(*Args), Args);
// FIXME: This behavior shouldn't be here.
if (CCCPrintOptions) {
PrintOptions(C->getArgs());
return C;
}
if (!HandleImmediateArgs(*C))
return C;
// Construct the list of abstract actions to perform for this
// compilation. We avoid passing a Compilation here simply to
// enforce the abstraction that pipelining is not host or toolchain
// dependent (other than the driver driver test).
if (Host->useDriverDriver())
BuildUniversalActions(C->getArgs(), C->getActions());
else
BuildActions(C->getArgs(), C->getActions());
if (CCCPrintActions) {
PrintActions(*C);
return C;
}
BuildJobs(*C);
return C;
}
void Driver::PrintOptions(const ArgList &Args) const {
unsigned i = 0;
for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
it != ie; ++it, ++i) {
Arg *A = *it;
llvm::errs() << "Option " << i << " - "
<< "Name: \"" << A->getOption().getName() << "\", "
<< "Values: {";
for (unsigned j = 0; j < A->getNumValues(); ++j) {
if (j)
llvm::errs() << ", ";
llvm::errs() << '"' << A->getValue(Args, j) << '"';
}
llvm::errs() << "}\n";
}
}
void Driver::PrintVersion() const {
static char buf[] = "$URL$";
char *zap = strstr(buf, "/lib/Driver");
if (zap)
*zap = 0;
zap = strstr(buf, "/clang/tools/clang");
if (zap)
*zap = 0;
const char *vers = buf+6;
// FIXME: Add cmake support and remove #ifdef
#ifdef SVN_REVISION
const char *revision = SVN_REVISION;
#else
const char *revision = "";
#endif
// FIXME: The following handlers should use a callback mechanism, we
// don't know what the client would like to do.
llvm::errs() << "clang version 1.0 (" << vers << " " << revision << ")" << "\n";
// FIXME: Add cmake support and remove #ifdef
#ifdef TARGET_TRIPLE
llvm::errs() << "Target: " << TARGET_TRIPLE << "\n";
#endif
}
bool Driver::HandleImmediateArgs(const Compilation &C) {
// The order these options are handled in in gcc is all over the
// place, but we don't expect inconsistencies w.r.t. that to matter
// in practice.
if (C.getArgs().hasArg(options::OPT_v) ||
C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
PrintVersion();
SuppressMissingInputWarning = true;
}
const ToolChain &TC = C.getDefaultToolChain();
if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
llvm::outs() << "programs: =";
for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(),
ie = TC.getProgramPaths().end(); it != ie; ++it) {
if (it != TC.getProgramPaths().begin())
llvm::outs() << ':';
llvm::outs() << *it;
}
llvm::outs() << "\n";
llvm::outs() << "libraries: =";
for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(),
ie = TC.getFilePaths().end(); it != ie; ++it) {
if (it != TC.getFilePaths().begin())
llvm::outs() << ':';
llvm::outs() << *it;
}
llvm::outs() << "\n";
}
// FIXME: The following handlers should use a callback mechanism, we
// don't know what the client would like to do.
if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC).toString()
<< "\n";
return false;
}
if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC).toString()
<< "\n";
return false;
}
if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
llvm::outs() << GetProgramPath("libgcc.a", TC).toString() << "\n";
return false;
}
return true;
}
static unsigned PrintActions1(const Compilation &C,
Action *A,
std::map<Action*, unsigned> &Ids) {
if (Ids.count(A))
return Ids[A];
std::string str;
llvm::raw_string_ostream os(str);
os << Action::getClassName(A->getKind()) << ", ";
if (InputAction *IA = dyn_cast<InputAction>(A)) {
os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\"";
} else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
os << '"' << (BIA->getArchName() ? BIA->getArchName() :
C.getDefaultToolChain().getArchName()) << '"'
<< ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}";
} else {
os << "{";
for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) {
os << PrintActions1(C, *it, Ids);
++it;
if (it != ie)
os << ", ";
}
os << "}";
}
unsigned Id = Ids.size();
Ids[A] = Id;
llvm::errs() << Id << ": " << os.str() << ", "
<< types::getTypeName(A->getType()) << "\n";
return Id;
}
void Driver::PrintActions(const Compilation &C) const {
std::map<Action*, unsigned> Ids;
for (ActionList::const_iterator it = C.getActions().begin(),
ie = C.getActions().end(); it != ie; ++it)
PrintActions1(C, *it, Ids);
}
void Driver::BuildUniversalActions(const ArgList &Args,
ActionList &Actions) const {
llvm::PrettyStackTraceString CrashInfo("Building actions for universal build");
// Collect the list of architectures. Duplicates are allowed, but
// should only be handled once (in the order seen).
llvm::StringSet<> ArchNames;
llvm::SmallVector<const char *, 4> Archs;
for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
it != ie; ++it) {
Arg *A = *it;
if (A->getOption().getId() == options::OPT_arch) {
const char *Name = A->getValue(Args);
// FIXME: We need to handle canonicalization of the specified
// arch?
A->claim();
if (ArchNames.insert(Name))
Archs.push_back(Name);
}
}
// When there is no explicit arch for this platform, make sure we
// still bind the architecture (to the default) so that -Xarch_ is
// handled correctly.
if (!Archs.size())
Archs.push_back(0);
// FIXME: We killed off some others but these aren't yet detected in
// a functional manner. If we added information to jobs about which
// "auxiliary" files they wrote then we could detect the conflict
// these cause downstream.
if (Archs.size() > 1) {
// No recovery needed, the point of this is just to prevent
// overwriting the same files.
if (const Arg *A = Args.getLastArg(options::OPT_M_Group))
Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs)
<< A->getAsString(Args);
if (const Arg *A = Args.getLastArg(options::OPT_save_temps))
Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs)
<< A->getAsString(Args);
}
ActionList SingleActions;
BuildActions(Args, SingleActions);
// Add in arch binding and lipo (if necessary) for every top level
// action.
for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) {
Action *Act = SingleActions[i];
// Make sure we can lipo this kind of output. If not (and it is an
// actual output) then we disallow, since we can't create an
// output file with the right name without overwriting it. We
// could remove this oddity by just changing the output names to
// include the arch, which would also fix
// -save-temps. Compatibility wins for now.
if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
<< types::getTypeName(Act->getType());
ActionList Inputs;
for (unsigned i = 0, e = Archs.size(); i != e; ++i)
Inputs.push_back(new BindArchAction(Act, Archs[i]));
// Lipo if necessary, We do it this way because we need to set the
// arch flag so that -Xarch_ gets overwritten.
if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
Actions.append(Inputs.begin(), Inputs.end());
else
Actions.push_back(new LipoJobAction(Inputs, Act->getType()));
}
}
void Driver::BuildActions(const ArgList &Args, ActionList &Actions) const {
llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
// Start by constructing the list of inputs and their types.
// Track the current user specified (-x) input. We also explicitly
// track the argument used to set the type; we only want to claim
// the type when we actually use it, so we warn about unused -x
// arguments.
types::ID InputType = types::TY_Nothing;
Arg *InputTypeArg = 0;
llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs;
for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
it != ie; ++it) {
Arg *A = *it;
if (isa<InputOption>(A->getOption())) {
const char *Value = A->getValue(Args);
types::ID Ty = types::TY_INVALID;
// Infer the input type if necessary.
if (InputType == types::TY_Nothing) {
// If there was an explicit arg for this, claim it.
if (InputTypeArg)
InputTypeArg->claim();
// stdin must be handled specially.
if (memcmp(Value, "-", 2) == 0) {
// If running with -E, treat as a C input (this changes the
// builtin macros, for example). This may be overridden by
// -ObjC below.
//
// Otherwise emit an error but still use a valid type to
// avoid spurious errors (e.g., no inputs).
if (!Args.hasArg(options::OPT_E, false))
Diag(clang::diag::err_drv_unknown_stdin_type);
Ty = types::TY_C;
} else {
// Otherwise lookup by extension, and fallback to ObjectType
// if not found. We use a host hook here because Darwin at
// least has its own idea of what .s is.
if (const char *Ext = strrchr(Value, '.'))
Ty = Host->lookupTypeForExtension(Ext + 1);
if (Ty == types::TY_INVALID)
Ty = types::TY_Object;
}
// -ObjC and -ObjC++ override the default language, but only
// -for "source files". We just treat everything that isn't a
// -linker input as a source file.
//
// FIXME: Clean this up if we move the phase sequence into the
// type.
if (Ty != types::TY_Object) {
if (Args.hasArg(options::OPT_ObjC))
Ty = types::TY_ObjC;
else if (Args.hasArg(options::OPT_ObjCXX))
Ty = types::TY_ObjCXX;
}
} else {
assert(InputTypeArg && "InputType set w/o InputTypeArg");
InputTypeArg->claim();
Ty = InputType;
}
// Check that the file exists. It isn't clear this is worth
// doing, since the tool presumably does this anyway, and this
// just adds an extra stat to the equation, but this is gcc
// compatible.
if (memcmp(Value, "-", 2) != 0 && !llvm::sys::Path(Value).exists())
Diag(clang::diag::err_drv_no_such_file) << A->getValue(Args);
else
Inputs.push_back(std::make_pair(Ty, A));
} else if (A->getOption().isLinkerInput()) {
// Just treat as object type, we could make a special type for
// this if necessary.
Inputs.push_back(std::make_pair(types::TY_Object, A));
} else if (A->getOption().getId() == options::OPT_x) {
InputTypeArg = A;
InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args));
// Follow gcc behavior and treat as linker input for invalid -x
// options. Its not clear why we shouldn't just revert to
// unknown; but this isn't very important, we might as well be
// bug comatible.
if (!InputType) {
Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args);
InputType = types::TY_Object;
}
}
}
if (!SuppressMissingInputWarning && Inputs.empty()) {
Diag(clang::diag::err_drv_no_input_files);
return;
}
// Determine which compilation mode we are in. We look for options
// which affect the phase, starting with the earliest phases, and
// record which option we used to determine the final phase.
Arg *FinalPhaseArg = 0;
phases::ID FinalPhase;
// -{E,M,MM} only run the preprocessor.
if ((FinalPhaseArg = Args.getLastArg(options::OPT_E)) ||
(FinalPhaseArg = Args.getLastArg(options::OPT_M)) ||
(FinalPhaseArg = Args.getLastArg(options::OPT_MM))) {
FinalPhase = phases::Preprocess;
// -{fsyntax-only,-analyze,emit-llvm,S} only run up to the compiler.
} else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) ||
(FinalPhaseArg = Args.getLastArg(options::OPT__analyze)) ||
(FinalPhaseArg = Args.getLastArg(options::OPT_emit_llvm)) ||
(FinalPhaseArg = Args.getLastArg(options::OPT_S))) {
FinalPhase = phases::Compile;
// -c only runs up to the assembler.
} else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) {
FinalPhase = phases::Assemble;
// Otherwise do everything.
} else
FinalPhase = phases::Link;
// Reject -Z* at the top level, these options should never have been
// exposed by gcc.
if (Arg *A = Args.getLastArg(options::OPT_Z))
Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
// Construct the actions to perform.
ActionList LinkerInputs;
for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
types::ID InputType = Inputs[i].first;
const Arg *InputArg = Inputs[i].second;
unsigned NumSteps = types::getNumCompilationPhases(InputType);
assert(NumSteps && "Invalid number of steps!");
// If the first step comes after the final phase we are doing as
// part of this compilation, warn the user about it.
phases::ID InitialPhase = types::getCompilationPhase(InputType, 0);
if (InitialPhase > FinalPhase) {
// Claim here to avoid the more general unused warning.
InputArg->claim();
Diag(clang::diag::warn_drv_input_file_unused)
<< InputArg->getAsString(Args)
<< getPhaseName(InitialPhase)
<< FinalPhaseArg->getOption().getName();
continue;
}
// Build the pipeline for this file.
Action *Current = new InputAction(*InputArg, InputType);
for (unsigned i = 0; i != NumSteps; ++i) {
phases::ID Phase = types::getCompilationPhase(InputType, i);
// We are done if this step is past what the user requested.
if (Phase > FinalPhase)
break;
// Queue linker inputs.
if (Phase == phases::Link) {
assert(i + 1 == NumSteps && "linking must be final compilation step.");
LinkerInputs.push_back(Current);
Current = 0;
break;
}
// Otherwise construct the appropriate action.
Current = ConstructPhaseAction(Args, Phase, Current);
if (Current->getType() == types::TY_Nothing)
break;
}
// If we ended with something, add to the output list.
if (Current)
Actions.push_back(Current);
}
// Add a link action if necessary.
if (!LinkerInputs.empty())
Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image));
}
Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
Action *Input) const {
llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
// Build the appropriate action.
switch (Phase) {
case phases::Link: assert(0 && "link action invalid here.");
case phases::Preprocess: {
types::ID OutputTy = types::getPreprocessedType(Input->getType());
assert(OutputTy != types::TY_INVALID &&
"Cannot preprocess this input type!");
return new PreprocessJobAction(Input, OutputTy);
}
case phases::Precompile:
return new PrecompileJobAction(Input, types::TY_PCH);
case phases::Compile: {
if (Args.hasArg(options::OPT_fsyntax_only)) {
return new CompileJobAction(Input, types::TY_Nothing);
} else if (Args.hasArg(options::OPT__analyze)) {
return new AnalyzeJobAction(Input, types::TY_Plist);
} else if (Args.hasArg(options::OPT_emit_llvm)) {
types::ID Output =
Args.hasArg(options::OPT_S) ? types::TY_LLVMAsm : types::TY_LLVMBC;
return new CompileJobAction(Input, Output);
} else {
return new CompileJobAction(Input, types::TY_PP_Asm);
}
}
case phases::Assemble:
return new AssembleJobAction(Input, types::TY_Object);
}
assert(0 && "invalid phase in ConstructPhaseAction");
return 0;
}
void Driver::BuildJobs(Compilation &C) const {
llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
bool SaveTemps = C.getArgs().hasArg(options::OPT_save_temps);
bool UsePipes = C.getArgs().hasArg(options::OPT_pipe);
// FIXME: Pipes are forcibly disabled until we support executing
// them.
if (!CCCPrintBindings)
UsePipes = false;
// -save-temps inhibits pipes.
if (SaveTemps && UsePipes) {
Diag(clang::diag::warn_drv_pipe_ignored_with_save_temps);
UsePipes = true;
}
Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
// It is an error to provide a -o option if we are making multiple
// output files.
if (FinalOutput) {
unsigned NumOutputs = 0;
for (ActionList::const_iterator it = C.getActions().begin(),
ie = C.getActions().end(); it != ie; ++it)
if ((*it)->getType() != types::TY_Nothing)
++NumOutputs;
if (NumOutputs > 1) {
Diag(clang::diag::err_drv_output_argument_with_multiple_files);
FinalOutput = 0;
}
}
for (ActionList::const_iterator it = C.getActions().begin(),
ie = C.getActions().end(); it != ie; ++it) {
Action *A = *it;
// If we are linking an image for multiple archs then the linker
// wants -arch_multiple and -final_output <final image
// name>. Unfortunately, this doesn't fit in cleanly because we
// have to pass this information down.
//
// FIXME: This is a hack; find a cleaner way to integrate this
// into the process.
const char *LinkingOutput = 0;
if (isa<LinkJobAction>(A)) {
if (FinalOutput)
LinkingOutput = FinalOutput->getValue(C.getArgs());
else
LinkingOutput = DefaultImageName.c_str();
}
InputInfo II;
BuildJobsForAction(C, A, &C.getDefaultToolChain(),
/*CanAcceptPipe*/ true,
/*AtTopLevel*/ true,
/*LinkingOutput*/ LinkingOutput,
II);
}
// If there were errors, don't warn about any unused arguments.
if (Diags.getNumErrors())
return;
for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
it != ie; ++it) {
Arg *A = *it;
// FIXME: It would be nice to be able to send the argument to the
// Diagnostic, so that extra values, position, and so on could be
// printed.
if (!A->isClaimed())
Diag(clang::diag::warn_drv_unused_argument)
<< A->getAsString(C.getArgs());
}
}
void Driver::BuildJobsForAction(Compilation &C,
const Action *A,
const ToolChain *TC,
bool CanAcceptPipe,
bool AtTopLevel,
const char *LinkingOutput,
InputInfo &Result) const {
llvm::PrettyStackTraceString CrashInfo("Building compilation jobs for action");
bool UsePipes = C.getArgs().hasArg(options::OPT_pipe);
// FIXME: Pipes are forcibly disabled until we support executing
// them.
if (!CCCPrintBindings)
UsePipes = false;
if (const InputAction *IA = dyn_cast<InputAction>(A)) {
// FIXME: It would be nice to not claim this here; maybe the old
// scheme of just using Args was better?
const Arg &Input = IA->getInputArg();
Input.claim();
if (isa<PositionalArg>(Input)) {
const char *Name = Input.getValue(C.getArgs());
Result = InputInfo(Name, A->getType(), Name);
} else
Result = InputInfo(&Input, A->getType(), "");
return;
}
if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
const char *ArchName = BAA->getArchName();
if (!ArchName)
ArchName = C.getDefaultToolChain().getArchName().c_str();
BuildJobsForAction(C,
*BAA->begin(),
Host->getToolChain(C.getArgs(), ArchName),
CanAcceptPipe,
AtTopLevel,
LinkingOutput,
Result);
return;
}
const JobAction *JA = cast<JobAction>(A);
const Tool &T = TC->SelectTool(C, *JA);
// See if we should use an integrated preprocessor. We do so when we
// have exactly one input, since this is the only use case we care
// about (irrelevant since we don't support combine yet).
bool UseIntegratedCPP = false;
const ActionList *Inputs = &A->getInputs();
if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin())) {
if (!C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
!C.getArgs().hasArg(options::OPT_traditional_cpp) &&
!C.getArgs().hasArg(options::OPT_save_temps) &&
T.hasIntegratedCPP()) {
UseIntegratedCPP = true;
Inputs = &(*Inputs)[0]->getInputs();
}
}
// Only use pipes when there is exactly one input.
bool TryToUsePipeInput = Inputs->size() == 1 && T.acceptsPipedInput();
InputInfoList InputInfos;
for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end();
it != ie; ++it) {
InputInfo II;
BuildJobsForAction(C, *it, TC, TryToUsePipeInput,
/*AtTopLevel*/false,
LinkingOutput,
II);
InputInfos.push_back(II);
}
// Determine if we should output to a pipe.
bool OutputToPipe = false;
if (CanAcceptPipe && T.canPipeOutput()) {
// Some actions default to writing to a pipe if they are the top
// level phase and there was no user override.
//
// FIXME: Is there a better way to handle this?
if (AtTopLevel) {
if (isa<PreprocessJobAction>(A) && !C.getArgs().hasArg(options::OPT_o))
OutputToPipe = true;
} else if (UsePipes)
OutputToPipe = true;
}
// Figure out where to put the job (pipes).
Job *Dest = &C.getJobs();
if (InputInfos[0].isPipe()) {
assert(TryToUsePipeInput && "Unrequested pipe!");
assert(InputInfos.size() == 1 && "Unexpected pipe with multiple inputs.");
Dest = &InputInfos[0].getPipe();
}
// Always use the first input as the base input.
const char *BaseInput = InputInfos[0].getBaseInput();
// Determine the place to write output to (nothing, pipe, or
// filename) and where to put the new job.
if (JA->getType() == types::TY_Nothing) {
Result = InputInfo(A->getType(), BaseInput);
} else if (OutputToPipe) {
// Append to current piped job or create a new one as appropriate.
PipedJob *PJ = dyn_cast<PipedJob>(Dest);
if (!PJ) {
PJ = new PipedJob();
// FIXME: Temporary hack so that -ccc-print-bindings work until
// we have pipe support. Please remove later.
if (!CCCPrintBindings)
cast<JobList>(Dest)->addJob(PJ);
Dest = PJ;
}
Result = InputInfo(PJ, A->getType(), BaseInput);
} else {
Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel),
A->getType(), BaseInput);
}
if (CCCPrintBindings) {
llvm::errs() << "bind - \"" << T.getName() << "\", inputs: [";
for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
llvm::errs() << InputInfos[i].getAsString();
if (i + 1 != e)
llvm::errs() << ", ";
}
llvm::errs() << "], output: " << Result.getAsString() << "\n";
} else {
const ArgList &TCArgs = C.getArgsForToolChain(TC);
T.ConstructJob(C, *JA, *Dest, Result, InputInfos, TCArgs, LinkingOutput);
}
}
const char *Driver::GetNamedOutputPath(Compilation &C,
const JobAction &JA,
const char *BaseInput,
bool AtTopLevel) const {
llvm::PrettyStackTraceString CrashInfo("Computing output path");
// Output to a user requested destination?
if (AtTopLevel) {
if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
return C.addResultFile(FinalOutput->getValue(C.getArgs()));
}
// Output to a temporary file?
if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) {
std::string TmpName =
GetTemporaryPath(types::getTypeTempSuffix(JA.getType()));
return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
}
llvm::sys::Path BasePath(BaseInput);
std::string BaseName(BasePath.getLast());
// Determine what the derived output name should be.
const char *NamedOutput;
if (JA.getType() == types::TY_Image) {
NamedOutput = DefaultImageName.c_str();
} else {
const char *Suffix = types::getTypeTempSuffix(JA.getType());
assert(Suffix && "All types used for output should have a suffix.");
std::string::size_type End = std::string::npos;
if (!types::appendSuffixForType(JA.getType()))
End = BaseName.rfind('.');
std::string Suffixed(BaseName.substr(0, End));
Suffixed += '.';
Suffixed += Suffix;
NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
}
// As an annoying special case, PCH generation doesn't strip the
// pathname.
if (JA.getType() == types::TY_PCH) {
BasePath.eraseComponent();
if (BasePath.isEmpty())
BasePath = NamedOutput;
else
BasePath.appendComponent(NamedOutput);
return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()));
} else {
return C.addResultFile(NamedOutput);
}
}
llvm::sys::Path Driver::GetFilePath(const char *Name,
const ToolChain &TC) const {
const ToolChain::path_list &List = TC.getFilePaths();
for (ToolChain::path_list::const_iterator
it = List.begin(), ie = List.end(); it != ie; ++it) {
llvm::sys::Path P(*it);
P.appendComponent(Name);
if (P.exists())
return P;
}
return llvm::sys::Path(Name);
}
llvm::sys::Path Driver::GetProgramPath(const char *Name,
const ToolChain &TC) const {
const ToolChain::path_list &List = TC.getProgramPaths();
for (ToolChain::path_list::const_iterator
it = List.begin(), ie = List.end(); it != ie; ++it) {
llvm::sys::Path P(*it);
P.appendComponent(Name);
if (P.exists())
return P;
}
// If all else failed, search the path.
llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name));
if (!P.empty())
return P;
return llvm::sys::Path(Name);
}
std::string Driver::GetTemporaryPath(const char *Suffix) const {
// FIXME: This is lame; sys::Path should provide this function (in
// particular, it should know how to find the temporary files dir).
std::string Error;
llvm::sys::Path P("/tmp/cc");
if (P.makeUnique(false, &Error)) {
Diag(clang::diag::err_drv_unable_to_make_temp) << Error;
return "";
}
// FIXME: Grumble, makeUnique sometimes leaves the file around!?
// PR3837.
P.eraseFromDisk(false, 0);
P.appendSuffix(Suffix);
return P.toString();
}
const HostInfo *Driver::GetHostInfo(const char *Triple) const {
llvm::PrettyStackTraceString CrashInfo("Constructing host");
// Dice into arch, platform, and OS. This matches
// arch,platform,os = '(.*?)-(.*?)-(.*?)'
// and missing fields are left empty.
std::string Arch, Platform, OS;
if (const char *ArchEnd = strchr(Triple, '-')) {
Arch = std::string(Triple, ArchEnd);
if (const char *PlatformEnd = strchr(ArchEnd+1, '-')) {
Platform = std::string(ArchEnd+1, PlatformEnd);
OS = PlatformEnd+1;
} else
Platform = ArchEnd+1;
} else
Arch = Triple;
// Normalize Arch a bit.
//
// FIXME: This is very incomplete.
if (Arch == "i686")
Arch = "i386";
else if (Arch == "amd64")
Arch = "x86_64";
else if (Arch == "powerpc" || Arch == "Power Macintosh")
Arch = "ppc";
if (memcmp(&OS[0], "darwin", 6) == 0)
return createDarwinHostInfo(*this, Arch.c_str(), Platform.c_str(),
OS.c_str());
return createUnknownHostInfo(*this, Arch.c_str(), Platform.c_str(),
OS.c_str());
}
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