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Improve compatibility with system AS further by allowing input from stdin 

llvm-svn: 5780
This commit is contained in:
Chris Lattner 2003-04-16 17:49:18 +00:00
parent 3708870ec8
commit 12fe9b47cc
1 changed files with 30 additions and 16 deletions
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32
llvm/tools/gccas/gccas.cpp
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@ -27,7 +27,7 @@ namespace {
TargetData TD("gccas target");
cl::opt<std::string>
InputFilename(cl::Positional, cl::desc("<input llvm assembly>"),cl::Required);
InputFilename(cl::Positional,cl::desc("<input llvm assembly>"),cl::init("-"));
cl::opt<std::string>
OutputFilename("o", cl::desc("Override output filename"),
@ -117,7 +117,11 @@ int main(int argc, char **argv) {
return 1;
}
std::ostream *Out = 0;
if (OutputFilename == "") { // Didn't specify an output filename?
if (InputFilename == "-") {
OutputFilename = "-";
} else {
std::string IFN = InputFilename;
int Len = IFN.length();
if (IFN[Len-2] == '.' && IFN[Len-1] == 's') { // Source ends in .s?
@ -127,18 +131,26 @@ int main(int argc, char **argv) {
}
OutputFilename += ".o";
}
}
std::ofstream Out(OutputFilename.c_str(), std::ios::out);
if (!Out.good()) {
if (OutputFilename == "-")
Out = &std::cout;
else {
Out = new std::ofstream(OutputFilename.c_str(), std::ios::out);
// Make sure that the Out file gets unlink'd from the disk if we get a
// signal
RemoveFileOnSignal(OutputFilename);
}
if (!Out->good()) {
std::cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
return 1;
}
// Make sure that the Out file gets unlink'd from the disk if we get a SIGINT
RemoveFileOnSignal(OutputFilename);
if (PrintVersion)
std::cerr << "LLVM GCCAS version xx\n"; /* For GNU compatibility */
if (PrintVersion) /* For GNU compatibility */
std::cerr << "LLVM GCCAS version xx\n" << std::flush;
// In addition to just parsing the input from GCC, we also want to spiff it up
// a little bit. Do this now.
@ -151,9 +163,11 @@ int main(int argc, char **argv) {
AddConfiguredTransformationPasses(Passes);
// Write bytecode to file...
Passes.add(new WriteBytecodePass(&Out));
Passes.add(new WriteBytecodePass(Out));
// Run our queue of passes all at once now, efficiently.
Passes.run(*M.get());
if (Out != &std::cout) delete Out;
return 0;
}