//===-- llc.cpp - Implement the LLVM Native Code Generator ----------------===//
+//
+// The LLVM Compiler Infrastructure
//
-// This is the llc code generator.
+// 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 is the llc code generator driver. It provides a convenient
+// command-line interface for generating native assembly-language code
+// or C code, given LLVM bytecode.
//
//===----------------------------------------------------------------------===//
#include "llvm/Bytecode/Reader.h"
-#include "llvm/Target/TargetMachineImpls.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetMachineRegistry.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Pass.h"
-#include "Support/CommandLine.h"
-#include "Support/Signals.h"
-#include <memory>
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/PluginLoader.h"
+#include "llvm/System/Signals.h"
#include <fstream>
+#include <iostream>
+#include <memory>
+
+using namespace llvm;
// General options for llc. Other pass-specific options are specified
// within the corresponding llc passes, and target-specific options
static cl::opt<bool> Force("f", cl::desc("Overwrite output files"));
-enum ArchName { noarch, x86, Sparc };
-
-static cl::opt<ArchName>
-Arch("march", cl::desc("Architecture to generate assembly for:"), cl::Prefix,
- cl::values(clEnumVal(x86, " IA-32 (Pentium and above)"),
- clEnumValN(Sparc, "sparc", " SPARC V9"),
- 0),
-#if defined(i386) || defined(__i386__) || defined(__x86__)
- cl::init(x86)
-#elif defined(sparc) || defined(__sparc__) || defined(__sparcv9)
- cl::init(Sparc)
-#else
- cl::init(noarch)
-#endif
- );
-
+static cl::opt<const TargetMachineRegistry::Entry*, false, TargetNameParser>
+MArch("march", cl::desc("Architecture to generate assembly for:"));
+
// GetFileNameRoot - Helper function to get the basename of a filename...
static inline std::string
-GetFileNameRoot(const std::string &InputFilename)
-{
+GetFileNameRoot(const std::string &InputFilename) {
std::string IFN = InputFilename;
std::string outputFilename;
int Len = IFN.length();
- if (IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c') {
+ if ((Len > 2) &&
+ IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c') {
outputFilename = std::string(IFN.begin(), IFN.end()-3); // s/.bc/.s/
} else {
outputFilename = IFN;
//
int main(int argc, char **argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm system compiler\n");
-
+ sys::PrintStackTraceOnErrorSignal();
+
// Load the module to be compiled...
std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename));
if (M.get() == 0) {
// Allocate target machine. First, check whether the user has
// explicitly specified an architecture to compile for.
- unsigned Config = (mod.isLittleEndian() ? TM::LittleEndian : TM::BigEndian)|
- (mod.has32BitPointers() ? TM::PtrSize32 : TM::PtrSize64);
- TargetMachine* (*TargetMachineAllocator)(unsigned) = 0;
- switch (Arch) {
- case x86:
- TargetMachineAllocator = allocateX86TargetMachine;
- break;
- case Sparc:
- TargetMachineAllocator = allocateSparcTargetMachine;
- break;
- default:
- // Decide what the default target machine should be, by looking at
- // the module. This heuristic (ILP32, LE -> IA32; LP64, BE ->
- // SPARCV9) is kind of gross, but it will work until we have more
- // sophisticated target information to work from.
- if (mod.isLittleEndian() && mod.has32BitPointers()) {
- TargetMachineAllocator = allocateX86TargetMachine;
- } else if (mod.isBigEndian() && mod.has64BitPointers()) {
- TargetMachineAllocator = allocateSparcTargetMachine;
- } else {
- assert(0 && "You must specify -march; I could not guess the default");
- }
- break;
+ TargetMachine* (*TargetMachineAllocator)(const Module&,
+ IntrinsicLowering *) = 0;
+ if (MArch == 0) {
+ std::string Err;
+ MArch = TargetMachineRegistry::getClosestStaticTargetForModule(mod, Err);
+ if (MArch == 0) {
+ std::cerr << argv[0] << ": error auto-selecting target for module '"
+ << Err << "'. Please use the -march option to explicitly "
+ << "pick a target.\n";
+ return 1;
+ }
}
- std::auto_ptr<TargetMachine> target((*TargetMachineAllocator)(Config));
+
+ std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, 0));
assert(target.get() && "Could not allocate target machine!");
TargetMachine &Target = *target.get();
const TargetData &TD = Target.getTargetData();
// Build up all of the passes that we want to do to the module...
PassManager Passes;
-
Passes.add(new TargetData("llc", TD.isLittleEndian(), TD.getPointerSize(),
TD.getPointerAlignment(), TD.getDoubleAlignment()));
if (OutputFilename != "-") {
// Specified an output filename?
if (!Force && std::ifstream(OutputFilename.c_str())) {
- // If force is not specified, make sure not to overwrite a file!
- std::cerr << argv[0] << ": error opening '" << OutputFilename
- << "': file exists!\n"
- << "Use -f command line argument to force output\n";
- return 1;
+ // If force is not specified, make sure not to overwrite a file!
+ std::cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists!\n"
+ << "Use -f command line argument to force output\n";
+ return 1;
}
Out = new std::ofstream(OutputFilename.c_str());
- // Make sure that the Out file gets unlink'd from the disk if we get a
+ // Make sure that the Out file gets unlinked from the disk if we get a
// SIGINT
- RemoveFileOnSignal(OutputFilename);
+ sys::RemoveFileOnSignal(OutputFilename);
} else {
Out = &std::cout;
}
Out = &std::cout;
} else {
OutputFilename = GetFileNameRoot(InputFilename);
- OutputFilename += ".s";
+
+ if (MArch->Name[0] != 'c' || MArch->Name[1] != 0) // not CBE
+ OutputFilename += ".s";
+ else
+ OutputFilename += ".cbe.c";
if (!Force && std::ifstream(OutputFilename.c_str())) {
// If force is not specified, make sure not to overwrite a file!
return 1;
}
- // Make sure that the Out file gets unlink'd from the disk if we get a
+ // Make sure that the Out file gets unlinked from the disk if we get a
// SIGINT
- RemoveFileOnSignal(OutputFilename);
+ sys::RemoveFileOnSignal(OutputFilename);
}
}
projects / oota-llvm.git / blobdiff