mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
b12063919f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38 91177308-0d34-0410-b5e6-96231b3b80d8
102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
//===------------------------------------------------------------------------===
|
|
// LLVM 'OPT' UTILITY
|
|
//
|
|
// This utility may be invoked in the following manner:
|
|
// opt --help - Output information about command line switches
|
|
// opt [options] -dce - Run a dead code elimination pass on input
|
|
// bytecodes
|
|
// opt [options] -constprop - Run a constant propogation pass on input
|
|
// bytecodes
|
|
// opt [options] -inline - Run a method inlining pass on input bytecodes
|
|
// opt [options] -strip - Strip symbol tables out of methods
|
|
// opt [options] -mstrip - Strip module & method symbol tables
|
|
//
|
|
// Optimizations may be specified an arbitrary number of times on the command
|
|
// line, they are run in the order specified.
|
|
//
|
|
// TODO: Add a -all option to keep applying all optimizations until the program
|
|
// stops permuting.
|
|
//
|
|
//===------------------------------------------------------------------------===
|
|
|
|
#include <iostream.h>
|
|
#include <fstream.h>
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Bytecode/Reader.h"
|
|
#include "llvm/Bytecode/Writer.h"
|
|
#include "llvm/Tools/CommandLine.h"
|
|
#include "llvm/Opt/AllOpts.h"
|
|
|
|
struct {
|
|
const string ArgName, Name;
|
|
bool (*OptPtr)(Module *C);
|
|
} OptTable[] = {
|
|
{ "-dce", "Dead Code Elimination", DoDeadCodeElimination },
|
|
{ "-constprop","Constant Propogation", DoConstantPropogation },
|
|
{ "-inline" ,"Method Inlining", DoMethodInlining },
|
|
{ "-strip" ,"Strip Symbols", DoSymbolStripping },
|
|
{ "-mstrip" ,"Strip Module Symbols", DoFullSymbolStripping },
|
|
{ "-indvars" ,"Simplify Induction Vars", DoInductionVariableCannonicalize },
|
|
};
|
|
|
|
int main(int argc, char **argv) {
|
|
ToolCommandLine Opts(argc, argv, false);
|
|
bool Quiet = false;
|
|
|
|
for (int i = 1; i < argc; i++) {
|
|
if (string(argv[i]) == string("--help")) {
|
|
cerr << argv[0] << " usage:\n"
|
|
<< " " << argv[0] << " --help - Print this usage information\n";
|
|
for (unsigned j = 0; j < sizeof(OptTable)/sizeof(OptTable[0]); ++j) {
|
|
cerr << "\t" << OptTable[j].ArgName << "\t - Enable "
|
|
<< OptTable[j].Name << endl;
|
|
}
|
|
return 1;
|
|
} else if (string(argv[i]) == string("-q")) {
|
|
Quiet = true; argv[i] = 0;
|
|
}
|
|
}
|
|
|
|
ostream *Out = &cout; // Default to printing to stdout...
|
|
|
|
Module *C = ParseBytecodeFile(Opts.getInputFilename());
|
|
if (C == 0) {
|
|
cerr << "bytecode didn't read correctly.\n";
|
|
return 1;
|
|
}
|
|
|
|
|
|
for (int i = 1; i < argc; i++) {
|
|
if (argv[i] == 0) continue;
|
|
unsigned j;
|
|
for (j = 0; j < sizeof(OptTable)/sizeof(OptTable[0]); j++) {
|
|
if (string(argv[i]) == OptTable[j].ArgName) {
|
|
if (OptTable[j].OptPtr(C) && !Quiet)
|
|
cerr << OptTable[j].Name << " pass made modifications!\n";
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (j == sizeof(OptTable)/sizeof(OptTable[0]))
|
|
cerr << "'" << argv[i] << "' argument unrecognized: ignored\n";
|
|
}
|
|
|
|
if (Opts.getOutputFilename() != "-") {
|
|
Out = new ofstream(Opts.getOutputFilename().c_str(),
|
|
(Opts.getForce() ? 0 : ios::noreplace)|ios::out);
|
|
if (!Out->good()) {
|
|
cerr << "Error opening " << Opts.getOutputFilename()
|
|
<< "!\n";
|
|
delete C;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
// Okay, we're done now... write out result...
|
|
WriteBytecodeToFile(C, *Out);
|
|
delete C;
|
|
|
|
if (Out != &cout) delete Out;
|
|
return 0;
|
|
}
|