// to the x.ll file.
// Options:
// --help - Output information about command line switches
-// -dfo - Print basic blocks in depth first order
-// -rdfo - Print basic blocks in reverse depth first order
-// -po - Print basic blocks in post order
-// -rpo - Print basic blocks in reverse post order
-//
-// -c - Print C code
-//
-// TODO: add -vcg which prints VCG compatible output.
+// -c - Print C code instead of LLVM assembly
//
//===----------------------------------------------------------------------===//
#include "llvm/Module.h"
+#include "llvm/PassManager.h"
#include "llvm/Bytecode/Reader.h"
-#include "llvm/Support/CFG.h"
-#include "Support/DepthFirstIterator.h"
-#include "Support/PostOrderIterator.h"
+#include "llvm/Assembly/CWriter.h"
+#include "llvm/Assembly/PrintModulePass.h"
#include "Support/CommandLine.h"
#include "Support/Signals.h"
-#include "llvm/Assembly/CWriter.h"
#include <fstream>
-#include <iostream>
+#include <memory>
using std::cerr;
// OutputMode - The different orderings to print basic blocks in...
enum OutputMode {
- Default = 0, // Function Order (list order)
- dfo, // Depth First ordering
- rdfo, // Reverse Depth First ordering
- po, // Post Order
- rpo, // Reverse Post Order
-
- c, // Generate C code
+ llvm = 0, // Generate LLVM assembly (the default)
+ c, // Generate C code
};
-cl::String InputFilename ("", "Load <arg> file, print as assembly", 0, "-");
-cl::String OutputFilename("o", "Override output filename", cl::NoFlags, "");
-cl::Flag Force ("f", "Overwrite output files", cl::NoFlags, false);
-cl::EnumFlags<enum OutputMode> WriteMode(cl::NoFlags,
- clEnumVal(Default, "Write basic blocks in bytecode order"),
- clEnumVal(dfo , "Write basic blocks in depth first order"),
- clEnumVal(rdfo , "Write basic blocks in reverse DFO"),
- clEnumVal(po , "Write basic blocks in postorder"),
- clEnumVal(rpo , "Write basic blocks in reverse postorder"),
+static cl::opt<std::string>
+InputFilename(cl::Positional, cl::desc("<input bytecode>"), cl::init("-"));
- clEnumVal(c , "Write corresponding C code"),
- 0);
+static cl::opt<std::string>
+OutputFilename("o", cl::desc("Override output filename"),
+ cl::value_desc("filename"));
+
+static cl::opt<bool>
+Force("f", cl::desc("Overwrite output files"));
+
+static cl::opt<enum OutputMode>
+WriteMode(cl::desc("Specify the output format:"),
+ cl::values(
+ clEnumVal(llvm, "Output LLVM assembly"),
+ clEnumVal(c , "Output C code for program"),
+ 0));
int main(int argc, char **argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm .bc -> .ll disassembler\n");
std::ostream *Out = &std::cout; // Default to printing to stdout...
- Module *M = ParseBytecodeFile(InputFilename);
- if (M == 0) {
- cerr << "bytecode didn't read correctly.\n";
+ std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename));
+ if (M.get() == 0) {
+ cerr << argv[0] << ": bytecode didn't read correctly.\n";
return 1;
}
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!
- cerr << "Error opening '" << OutputFilename
- << "': File exists! Sending to standard output.\n";
+ cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists! Sending to standard output.\n";
} else {
Out = new std::ofstream(OutputFilename.c_str());
}
OutputFilename = IFN; // Append a .ll to it
}
if (WriteMode == c)
- OutputFilename += ".c";
+ OutputFilename += ".c";
else
- OutputFilename += ".ll";
+ OutputFilename += ".ll";
if (!Force && std::ifstream(OutputFilename.c_str())) {
// If force is not specified, make sure not to overwrite a file!
- cerr << "Error opening '" << OutputFilename
- << "': File exists! Sending to standard output.\n";
+ cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists! Sending to standard output.\n";
} else {
Out = new std::ofstream(OutputFilename.c_str());
}
if (!Out->good()) {
- cerr << "Error opening " << OutputFilename
+ cerr << argv[0] << ": error opening " << OutputFilename
<< ": sending to stdout instead!\n";
Out = &std::cout;
}
- // All that dis does is write the assembly or C out to a file... which is
- // exactly what the writer or cwriter library is supposed to do...
- if (WriteMode == Default) {
- (*Out) << M; // Print out in list order
- } else if (WriteMode == c) {
- WriteToC(M, *Out);
- } else {
- // TODO: This does not print anything other than the basic blocks in the
- // functions... more should definately be printed. It should be valid
- // output consumable by the assembler.
- //
- for (Module::iterator I = M->begin(), End = M->end(); I != End; ++I) {
- Function *F = *I;
- (*Out) << "-------------- Method: " << F->getName() << " -------------\n";
-
- switch (WriteMode) {
- case dfo: // Depth First ordering
- copy(df_begin(F), df_end(F),
- std::ostream_iterator<BasicBlock*>(*Out, "\n"));
- break;
- case rdfo: // Reverse Depth First ordering
- copy(df_begin(F, true), df_end(F),
- std::ostream_iterator<BasicBlock*>(*Out, "\n"));
- break;
- case po: // Post Order
- copy(po_begin(F), po_end(F),
- std::ostream_iterator<BasicBlock*>(*Out, "\n"));
- break;
- case rpo: { // Reverse Post Order
-#if 0 // FIXME, GCC 3.0.4 bug
- ReversePostOrderTraversal<Function*> RPOT(F);
- copy(RPOT.begin(), RPOT.end(),
- std::ostream_iterator<BasicBlock*>(*Out, "\n"));
-#endif
- break;
- }
- default:
- abort();
- break;
- }
- }
+ // All that dis does is write the assembly or C out to a file...
+ //
+ PassManager Passes;
+
+ switch (WriteMode) {
+ case llvm: // Output LLVM assembly
+ Passes.add(new PrintModulePass(Out));
+ break;
+ case c: // Convert LLVM to C
+ Passes.add(createWriteToCPass(*Out));
+ break;
}
- delete M;
- if (Out != &std::cout) delete Out;
+ Passes.run(*M.get());
+
+ if (Out != &std::cout) {
+ ((std::ofstream*)Out)->close();
+ delete Out;
+ }
return 0;
}