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remove EH cruft, add bitcode support

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36841 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-05-06 05:13:17 +00:00
parent c1e6d68698
commit c48e1db214
4 changed files with 151 additions and 123 deletions
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129
tools/llvm-extract/llvm-extract.cpp
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@@ -14,6 +14,7 @@
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/Bytecode/Reader.h"
#include "llvm/Bytecode/WriteBytecodePass.h"
#include "llvm/Transforms/IPO.h"
@@ -21,6 +22,7 @@
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compressor.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Streams.h"
#include "llvm/System/Signals.h"
#include <iostream>
@@ -28,6 +30,8 @@
#include <fstream>
using namespace llvm;
cl::opt<bool> Bitcode("bitcode");
// InputFilename - The filename to read from.
static cl::opt<std::string>
InputFilename(cl::Positional, cl::desc("<input bytecode file>"),
@@ -54,65 +58,76 @@ ExtractFunc("func", cl::desc("Specify function to extract"), cl::init("main"),
int main(int argc, char **argv) {
llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
try {
cl::ParseCommandLineOptions(argc, argv, " llvm extractor\n");
sys::PrintStackTraceOnErrorSignal();
cl::ParseCommandLineOptions(argc, argv, " llvm extractor\n");
sys::PrintStackTraceOnErrorSignal();
std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename,
Compressor::decompressToNewBuffer));
if (M.get() == 0) {
cerr << argv[0] << ": bytecode didn't read correctly.\n";
std::auto_ptr<Module> M;
if (Bitcode) {
MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(&InputFilename[0],
InputFilename.size());
if (Buffer == 0) {
cerr << "Error reading file '" + InputFilename + "'";
return 1;
} else {
M.reset(ParseBitcodeFile(Buffer));
}
// Figure out which function we should extract
Function *F = M.get()->getFunction(ExtractFunc);
if (F == 0) {
cerr << argv[0] << ": program doesn't contain function named '"
<< ExtractFunc << "'!\n";
return 1;
}
// In addition to deleting all other functions, we also want to spiff it
// up a little bit. Do this now.
PassManager Passes;
Passes.add(new TargetData(M.get())); // Use correct TargetData
// Either isolate the function or delete it from the Module
Passes.add(createFunctionExtractionPass(F, DeleteFn, Relink));
if (!DeleteFn)
Passes.add(createGlobalDCEPass()); // Delete unreachable globals
Passes.add(createDeadTypeEliminationPass()); // Remove dead types...
Passes.add(createStripDeadPrototypesPass()); // Remove dead func decls
std::ostream *Out = 0;
if (OutputFilename != "-") { // Not stdout?
if (!Force && std::ifstream(OutputFilename.c_str())) {
// If force is not specified, make sure not to overwrite a file!
cerr << argv[0] << ": error opening '" << OutputFilename
<< "': file exists!\n"
<< "Use -f command line argument to force output\n";
return 1;
}
std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
std::ios::binary;
Out = new std::ofstream(OutputFilename.c_str(), io_mode);
} else { // Specified stdout
// FIXME: cout is not binary!
Out = &std::cout;
}
OStream L(*Out);
Passes.add(new WriteBytecodePass(&L)); // Write bytecode to file...
Passes.run(*M.get());
if (Out != &std::cout)
delete Out;
return 0;
} catch (const std::string& msg) {
cerr << argv[0] << ": " << msg << "\n";
} catch (...) {
cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
delete Buffer;
} else {
M.reset(ParseBytecodeFile(InputFilename,
Compressor::decompressToNewBuffer));
}
return 1;
if (M.get() == 0) {
cerr << argv[0] << ": bytecode didn't read correctly.\n";
return 1;
}
// Figure out which function we should extract
Function *F = M.get()->getFunction(ExtractFunc);
if (F == 0) {
cerr << argv[0] << ": program doesn't contain function named '"
<< ExtractFunc << "'!\n";
return 1;
}
// In addition to deleting all other functions, we also want to spiff it
// up a little bit. Do this now.
PassManager Passes;
Passes.add(new TargetData(M.get())); // Use correct TargetData
// Either isolate the function or delete it from the Module
Passes.add(createFunctionExtractionPass(F, DeleteFn, Relink));
if (!DeleteFn)
Passes.add(createGlobalDCEPass()); // Delete unreachable globals
Passes.add(createDeadTypeEliminationPass()); // Remove dead types...
Passes.add(createStripDeadPrototypesPass()); // Remove dead func decls
std::ostream *Out = 0;
if (OutputFilename != "-") { // Not stdout?
if (!Force && std::ifstream(OutputFilename.c_str())) {
// If force is not specified, make sure not to overwrite a file!
cerr << argv[0] << ": error opening '" << OutputFilename
<< "': file exists!\n"
<< "Use -f command line argument to force output\n";
return 1;
}
std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
std::ios::binary;
Out = new std::ofstream(OutputFilename.c_str(), io_mode);
} else { // Specified stdout
// FIXME: cout is not binary!
Out = &std::cout;
}
OStream L(*Out);
if (Bitcode)
Passes.add(CreateBitcodeWriterPass(*Out));
else
Passes.add(new WriteBytecodePass(&L)); // Write bytecode to file...
Passes.run(*M.get());
if (Out != &std::cout)
delete Out;
return 0;
}