//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/CodeGen/FileWriters.h"
#include "llvm/CodeGen/LinkAllCodegenComponents.h"
+#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
#include "llvm/Target/SubtargetFeature.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/PassManager.h"
#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PluginLoader.h"
-#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/RegistryParser.h"
+#include "llvm/Support/raw_ostream.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/System/Signals.h"
#include "llvm/Config/config.h"
#include "llvm/LinkAllVMCore.h"
+#include "llvm/InitializeAllTargets.h"
+#include "llvm/InitializeAllAsmPrinters.h"
#include <fstream>
#include <iostream>
#include <memory>
static cl::opt<bool> Force("f", cl::desc("Overwrite output files"));
-static cl::opt<bool> Fast("fast",
- cl::desc("Generate code quickly, potentially sacrificing code quality"));
+// Determine optimization level.
+static cl::opt<char>
+OptLevel("O",
+ cl::desc("Optimization level. [-O0, -O1, -O2, or -O3] "
+ "(default = '-O2')"),
+ cl::Prefix,
+ cl::ZeroOrMore,
+ cl::init(' '));
static cl::opt<std::string>
TargetTriple("mtriple", cl::desc("Override target triple for module"));
-static cl::opt<const TargetMachineRegistry::Entry*, false, TargetNameParser>
+static cl::opt<const TargetMachineRegistry::entry*, false,
+ RegistryParser<TargetMachine> >
MArch("march", cl::desc("Architecture to generate code for:"));
static cl::opt<std::string>
-MCPU("mcpu",
+MCPU("mcpu",
cl::desc("Target a specific cpu type (-mcpu=help for details)"),
cl::value_desc("cpu-name"),
cl::init(""));
static cl::list<std::string>
-MAttrs("mattr",
+MAttrs("mattr",
cl::CommaSeparated,
cl::desc("Target specific attributes (-mattr=help for details)"),
cl::value_desc("a1,+a2,-a3,..."));
FileType("filetype", cl::init(TargetMachine::AssemblyFile),
cl::desc("Choose a file type (not all types are supported by all targets):"),
cl::values(
- clEnumValN(TargetMachine::AssemblyFile, "asm",
- " Emit an assembly ('.s') file"),
- clEnumValN(TargetMachine::ObjectFile, "obj",
- " Emit a native object ('.o') file [experimental]"),
+ clEnumValN(TargetMachine::AssemblyFile, "asm",
+ "Emit an assembly ('.s') file"),
+ clEnumValN(TargetMachine::ObjectFile, "obj",
+ "Emit a native object ('.o') file [experimental]"),
clEnumValN(TargetMachine::DynamicLibrary, "dynlib",
- " Emit a native dynamic library ('.so') file"
+ "Emit a native dynamic library ('.so') file"
" [experimental]"),
clEnumValEnd));
cl::desc("Do not verify input module"));
+static cl::opt<bool>
+DisableRedZone("disable-red-zone",
+ cl::desc("Do not emit code that uses the red zone."),
+ cl::init(false));
+
+static cl::opt<bool>
+NoImplicitFloats("no-implicit-float",
+ cl::desc("Don't generate implicit floating point instructions (x86-only)"),
+ cl::init(false));
+
// GetFileNameRoot - Helper function to get the basename of a filename.
static inline std::string
GetFileNameRoot(const std::string &InputFilename) {
return outputFilename;
}
-static std::ostream *GetOutputStream(const char *ProgName) {
+static raw_ostream *GetOutputStream(const char *ProgName) {
if (OutputFilename != "") {
if (OutputFilename == "-")
- return &std::cout;
+ return &outs();
// Specified an output filename?
if (!Force && std::ifstream(OutputFilename.c_str())) {
// SIGINT
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
- return new std::ofstream(OutputFilename.c_str());
+ std::string error;
+ raw_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(), true, error);
+ if (!error.empty()) {
+ std::cerr << error << '\n';
+ delete Out;
+ return 0;
+ }
+
+ return Out;
}
-
+
if (InputFilename == "-") {
OutputFilename = "-";
- return &std::cout;
+ return &outs();
}
OutputFilename = GetFileNameRoot(InputFilename);
-
+
+ bool Binary = false;
switch (FileType) {
case TargetMachine::AssemblyFile:
- if (MArch->Name[0] != 'c' || MArch->Name[1] != 0) // not CBE
+ if (MArch->Name[0] == 'c') {
+ if (MArch->Name[1] == 0)
+ OutputFilename += ".cbe.c";
+ else if (MArch->Name[1] == 'p' && MArch->Name[2] == 'p')
+ OutputFilename += ".cpp";
+ else
+ OutputFilename += ".s";
+ } else
OutputFilename += ".s";
- else
- OutputFilename += ".cbe.c";
break;
case TargetMachine::ObjectFile:
OutputFilename += ".o";
+ Binary = true;
break;
case TargetMachine::DynamicLibrary:
OutputFilename += LTDL_SHLIB_EXT;
+ Binary = true;
break;
}
-
+
if (!Force && std::ifstream(OutputFilename.c_str())) {
// If force is not specified, make sure not to overwrite a file!
std::cerr << ProgName << ": error opening '" << OutputFilename
<< "Use -f command line argument to force output\n";
return 0;
}
-
+
// Make sure that the Out file gets unlinked from the disk if we get a
// SIGINT
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
- std::ostream *Out = new std::ofstream(OutputFilename.c_str());
- if (!Out->good()) {
- std::cerr << ProgName << ": error opening " << OutputFilename << "!\n";
+
+ std::string error;
+ raw_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(), Binary, error);
+ if (!error.empty()) {
+ std::cerr << error << '\n';
delete Out;
return 0;
}
-
+
return Out;
}
// main - Entry point for the llc compiler.
//
int main(int argc, char **argv) {
- llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
- cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
sys::PrintStackTraceOnErrorSignal();
+ PrettyStackTraceProgram X(argc, argv);
+ llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+ cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
// Load the module to be compiled...
std::string ErrorMessage;
std::auto_ptr<Module> M;
-
+
std::auto_ptr<MemoryBuffer> Buffer(
MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage));
if (Buffer.get())
return 1;
}
Module &mod = *M.get();
-
+
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
mod.setTargetTriple(TargetTriple);
-
+
// Allocate target machine. First, check whether the user has
// explicitly specified an architecture to compile for.
if (MArch == 0) {
Features.AddFeature(MAttrs[i]);
FeaturesStr = Features.getString();
}
-
+
std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, FeaturesStr));
assert(target.get() && "Could not allocate target machine!");
TargetMachine &Target = *target.get();
// Figure out where we are going to send the output...
- std::ostream *Out = GetOutputStream(argv[0]);
+ raw_ostream *Out = GetOutputStream(argv[0]);
if (Out == 0) return 1;
-
+
+ CodeGenOpt::Level OLvl = CodeGenOpt::Default;
+ switch (OptLevel) {
+ default:
+ std::cerr << argv[0] << ": invalid optimization level.\n";
+ return 1;
+ case ' ': break;
+ case '0': OLvl = CodeGenOpt::None; break;
+ case '1':
+ case '2': OLvl = CodeGenOpt::Default; break;
+ case '3': OLvl = CodeGenOpt::Aggressive; break;
+ }
+
// If this target requires addPassesToEmitWholeFile, do it now. This is
// used by strange things like the C backend.
if (Target.WantsWholeFile()) {
PM.add(new TargetData(*Target.getTargetData()));
if (!NoVerify)
PM.add(createVerifierPass());
-
+
// Ask the target to add backend passes as necessary.
- if (Target.addPassesToEmitWholeFile(PM, *Out, FileType, Fast)) {
+ if (Target.addPassesToEmitWholeFile(PM, *Out, FileType, OLvl)) {
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
- if (Out != &std::cout) delete Out;
+ if (Out != &outs()) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
PM.run(mod);
} else {
// Build up all of the passes that we want to do to the module.
- FunctionPassManager Passes(new ExistingModuleProvider(M.get()));
+ ExistingModuleProvider Provider(M.release());
+ FunctionPassManager Passes(&Provider);
Passes.add(new TargetData(*Target.getTargetData()));
-
+
#ifndef NDEBUG
if (!NoVerify)
Passes.add(createVerifierPass());
#endif
-
+
// Ask the target to add backend passes as necessary.
MachineCodeEmitter *MCE = 0;
- switch (Target.addPassesToEmitFile(Passes, *Out, FileType, Fast)) {
+ // Override default to generate verbose assembly.
+ Target.setAsmVerbosityDefault(true);
+
+ switch (Target.addPassesToEmitFile(Passes, *Out, FileType, OLvl)) {
default:
assert(0 && "Invalid file model!");
return 1;
case FileModel::Error:
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
- if (Out != &std::cout) delete Out;
+ if (Out != &outs()) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
break;
}
- if (Target.addPassesToEmitFileFinish(Passes, MCE, Fast)) {
+ if (Target.addPassesToEmitFileFinish(Passes, MCE, OLvl)) {
std::cerr << argv[0] << ": target does not support generation of this"
<< " file type!\n";
- if (Out != &std::cout) delete Out;
+ if (Out != &outs()) delete Out;
// And the Out file is empty and useless, so remove it now.
sys::Path(OutputFilename).eraseFromDisk();
return 1;
}
-
+
Passes.doInitialization();
-
+
// Run our queue of passes all at once now, efficiently.
// TODO: this could lazily stream functions out of the module.
for (Module::iterator I = mod.begin(), E = mod.end(); I != E; ++I)
- if (!I->isDeclaration())
+ if (!I->isDeclaration()) {
+ if (DisableRedZone)
+ I->addFnAttr(Attribute::NoRedZone);
+ if (NoImplicitFloats)
+ I->addFnAttr(Attribute::NoImplicitFloat);
Passes.run(*I);
-
+ }
+
Passes.doFinalization();
}
-
+
// Delete the ostream if it's not a stdout stream
- if (Out != &std::cout) delete Out;
+ if (Out != &outs()) delete Out;
return 0;
}
projects / oota-llvm.git / blobdiff