mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-04 05:17:07 +00:00
ca88ceea52
globals. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166909 91177308-0d34-0410-b5e6-96231b3b80d8
286 lines
9.4 KiB
C++
286 lines
9.4 KiB
C++
//===- llvm-extract.cpp - LLVM function extraction utility ----------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This utility changes the input module to only contain a single function,
|
|
// which is primarily used for debugging transformations.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/LLVMContext.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/PassManager.h"
|
|
#include "llvm/Assembly/PrintModulePass.h"
|
|
#include "llvm/Bitcode/ReaderWriter.h"
|
|
#include "llvm/Transforms/IPO.h"
|
|
#include "llvm/DataLayout.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/IRReader.h"
|
|
#include "llvm/Support/ManagedStatic.h"
|
|
#include "llvm/Support/PrettyStackTrace.h"
|
|
#include "llvm/Support/ToolOutputFile.h"
|
|
#include "llvm/Support/SystemUtils.h"
|
|
#include "llvm/Support/Signals.h"
|
|
#include "llvm/Support/Regex.h"
|
|
#include "llvm/ADT/SmallPtrSet.h"
|
|
#include "llvm/ADT/SetVector.h"
|
|
#include <memory>
|
|
using namespace llvm;
|
|
|
|
// InputFilename - The filename to read from.
|
|
static cl::opt<std::string>
|
|
InputFilename(cl::Positional, cl::desc("<input bitcode file>"),
|
|
cl::init("-"), cl::value_desc("filename"));
|
|
|
|
static cl::opt<std::string>
|
|
OutputFilename("o", cl::desc("Specify output filename"),
|
|
cl::value_desc("filename"), cl::init("-"));
|
|
|
|
static cl::opt<bool>
|
|
Force("f", cl::desc("Enable binary output on terminals"));
|
|
|
|
static cl::opt<bool>
|
|
DeleteFn("delete", cl::desc("Delete specified Globals from Module"));
|
|
|
|
// ExtractFuncs - The functions to extract from the module.
|
|
static cl::list<std::string>
|
|
ExtractFuncs("func", cl::desc("Specify function to extract"),
|
|
cl::ZeroOrMore, cl::value_desc("function"));
|
|
|
|
// ExtractRegExpFuncs - The functions, matched via regular expression, to
|
|
// extract from the module.
|
|
static cl::list<std::string>
|
|
ExtractRegExpFuncs("rfunc", cl::desc("Specify function(s) to extract using a "
|
|
"regular expression"),
|
|
cl::ZeroOrMore, cl::value_desc("rfunction"));
|
|
|
|
// ExtractAlias - The alias to extract from the module.
|
|
static cl::list<std::string>
|
|
ExtractAliases("alias", cl::desc("Specify alias to extract"),
|
|
cl::ZeroOrMore, cl::value_desc("alias"));
|
|
|
|
|
|
// ExtractRegExpAliases - The aliases, matched via regular expression, to
|
|
// extract from the module.
|
|
static cl::list<std::string>
|
|
ExtractRegExpAliases("ralias", cl::desc("Specify alias(es) to extract using a "
|
|
"regular expression"),
|
|
cl::ZeroOrMore, cl::value_desc("ralias"));
|
|
|
|
// ExtractGlobals - The globals to extract from the module.
|
|
static cl::list<std::string>
|
|
ExtractGlobals("glob", cl::desc("Specify global to extract"),
|
|
cl::ZeroOrMore, cl::value_desc("global"));
|
|
|
|
// ExtractRegExpGlobals - The globals, matched via regular expression, to
|
|
// extract from the module...
|
|
static cl::list<std::string>
|
|
ExtractRegExpGlobals("rglob", cl::desc("Specify global(s) to extract using a "
|
|
"regular expression"),
|
|
cl::ZeroOrMore, cl::value_desc("rglobal"));
|
|
|
|
static cl::opt<bool>
|
|
OutputAssembly("S",
|
|
cl::desc("Write output as LLVM assembly"), cl::Hidden);
|
|
|
|
int main(int argc, char **argv) {
|
|
// Print a stack trace if we signal out.
|
|
sys::PrintStackTraceOnErrorSignal();
|
|
PrettyStackTraceProgram X(argc, argv);
|
|
|
|
LLVMContext &Context = getGlobalContext();
|
|
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
|
|
cl::ParseCommandLineOptions(argc, argv, "llvm extractor\n");
|
|
|
|
// Use lazy loading, since we only care about selected global values.
|
|
SMDiagnostic Err;
|
|
std::auto_ptr<Module> M;
|
|
M.reset(getLazyIRFileModule(InputFilename, Err, Context));
|
|
|
|
if (M.get() == 0) {
|
|
Err.print(argv[0], errs());
|
|
return 1;
|
|
}
|
|
|
|
// Use SetVector to avoid duplicates.
|
|
SetVector<GlobalValue *> GVs;
|
|
|
|
// Figure out which aliases we should extract.
|
|
for (size_t i = 0, e = ExtractAliases.size(); i != e; ++i) {
|
|
GlobalAlias *GA = M->getNamedAlias(ExtractAliases[i]);
|
|
if (!GA) {
|
|
errs() << argv[0] << ": program doesn't contain alias named '"
|
|
<< ExtractAliases[i] << "'!\n";
|
|
return 1;
|
|
}
|
|
GVs.insert(GA);
|
|
}
|
|
|
|
// Extract aliases via regular expression matching.
|
|
for (size_t i = 0, e = ExtractRegExpAliases.size(); i != e; ++i) {
|
|
std::string Error;
|
|
Regex RegEx(ExtractRegExpAliases[i]);
|
|
if (!RegEx.isValid(Error)) {
|
|
errs() << argv[0] << ": '" << ExtractRegExpAliases[i] << "' "
|
|
"invalid regex: " << Error;
|
|
}
|
|
bool match = false;
|
|
for (Module::alias_iterator GA = M->alias_begin(), E = M->alias_end();
|
|
GA != E; GA++) {
|
|
if (RegEx.match(GA->getName())) {
|
|
GVs.insert(&*GA);
|
|
match = true;
|
|
}
|
|
}
|
|
if (!match) {
|
|
errs() << argv[0] << ": program doesn't contain global named '"
|
|
<< ExtractRegExpAliases[i] << "'!\n";
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
// Figure out which globals we should extract.
|
|
for (size_t i = 0, e = ExtractGlobals.size(); i != e; ++i) {
|
|
GlobalValue *GV = M->getNamedGlobal(ExtractGlobals[i]);
|
|
if (!GV) {
|
|
errs() << argv[0] << ": program doesn't contain global named '"
|
|
<< ExtractGlobals[i] << "'!\n";
|
|
return 1;
|
|
}
|
|
GVs.insert(GV);
|
|
}
|
|
|
|
// Extract globals via regular expression matching.
|
|
for (size_t i = 0, e = ExtractRegExpGlobals.size(); i != e; ++i) {
|
|
std::string Error;
|
|
Regex RegEx(ExtractRegExpGlobals[i]);
|
|
if (!RegEx.isValid(Error)) {
|
|
errs() << argv[0] << ": '" << ExtractRegExpGlobals[i] << "' "
|
|
"invalid regex: " << Error;
|
|
}
|
|
bool match = false;
|
|
for (Module::global_iterator GV = M->global_begin(),
|
|
E = M->global_end(); GV != E; GV++) {
|
|
if (RegEx.match(GV->getName())) {
|
|
GVs.insert(&*GV);
|
|
match = true;
|
|
}
|
|
}
|
|
if (!match) {
|
|
errs() << argv[0] << ": program doesn't contain global named '"
|
|
<< ExtractRegExpGlobals[i] << "'!\n";
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
// Figure out which functions we should extract.
|
|
for (size_t i = 0, e = ExtractFuncs.size(); i != e; ++i) {
|
|
GlobalValue *GV = M->getFunction(ExtractFuncs[i]);
|
|
if (!GV) {
|
|
errs() << argv[0] << ": program doesn't contain function named '"
|
|
<< ExtractFuncs[i] << "'!\n";
|
|
return 1;
|
|
}
|
|
GVs.insert(GV);
|
|
}
|
|
// Extract functions via regular expression matching.
|
|
for (size_t i = 0, e = ExtractRegExpFuncs.size(); i != e; ++i) {
|
|
std::string Error;
|
|
StringRef RegExStr = ExtractRegExpFuncs[i];
|
|
Regex RegEx(RegExStr);
|
|
if (!RegEx.isValid(Error)) {
|
|
errs() << argv[0] << ": '" << ExtractRegExpFuncs[i] << "' "
|
|
"invalid regex: " << Error;
|
|
}
|
|
bool match = false;
|
|
for (Module::iterator F = M->begin(), E = M->end(); F != E;
|
|
F++) {
|
|
if (RegEx.match(F->getName())) {
|
|
GVs.insert(&*F);
|
|
match = true;
|
|
}
|
|
}
|
|
if (!match) {
|
|
errs() << argv[0] << ": program doesn't contain global named '"
|
|
<< ExtractRegExpFuncs[i] << "'!\n";
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
// Materialize requisite global values.
|
|
if (!DeleteFn)
|
|
for (size_t i = 0, e = GVs.size(); i != e; ++i) {
|
|
GlobalValue *GV = GVs[i];
|
|
if (GV->isMaterializable()) {
|
|
std::string ErrInfo;
|
|
if (GV->Materialize(&ErrInfo)) {
|
|
errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// Deleting. Materialize every GV that's *not* in GVs.
|
|
SmallPtrSet<GlobalValue *, 8> GVSet(GVs.begin(), GVs.end());
|
|
for (Module::global_iterator I = M->global_begin(), E = M->global_end();
|
|
I != E; ++I) {
|
|
GlobalVariable *G = I;
|
|
if (!GVSet.count(G) && G->isMaterializable()) {
|
|
std::string ErrInfo;
|
|
if (G->Materialize(&ErrInfo)) {
|
|
errs() << argv[0] << ": error reading input: " << ErrInfo << "\n";
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I) {
|
|
Function *F = I;
|
|
if (!GVSet.count(F) && F->isMaterializable()) {
|
|
std::string ErrInfo;
|
|
if (F->Materialize(&ErrInfo)) {
|
|
errs() << argv[0] << ": error reading input: " << ErrInfo << "\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 DataLayout(M.get())); // Use correct DataLayout
|
|
|
|
std::vector<GlobalValue*> Gvs(GVs.begin(), GVs.end());
|
|
|
|
Passes.add(createGVExtractionPass(Gvs, DeleteFn));
|
|
if (!DeleteFn)
|
|
Passes.add(createGlobalDCEPass()); // Delete unreachable globals
|
|
Passes.add(createStripDeadDebugInfoPass()); // Remove dead debug info
|
|
Passes.add(createStripDeadPrototypesPass()); // Remove dead func decls
|
|
|
|
std::string ErrorInfo;
|
|
tool_output_file Out(OutputFilename.c_str(), ErrorInfo,
|
|
raw_fd_ostream::F_Binary);
|
|
if (!ErrorInfo.empty()) {
|
|
errs() << ErrorInfo << '\n';
|
|
return 1;
|
|
}
|
|
|
|
if (OutputAssembly)
|
|
Passes.add(createPrintModulePass(&Out.os()));
|
|
else if (Force || !CheckBitcodeOutputToConsole(Out.os(), true))
|
|
Passes.add(createBitcodeWriterPass(Out.os()));
|
|
|
|
Passes.run(*M.get());
|
|
|
|
// Declare success.
|
|
Out.keep();
|
|
|
|
return 0;
|
|
}
|