#include "llvm/Bytecode/WriteBytecodePass.h"
#include "llvm/Assembly/PrintModulePass.h"
#include "llvm/Analysis/Verifier.h"
+#include "llvm/Analysis/LoopPass.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/PassNameParser.h"
#include "llvm/System/Signals.h"
+#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PluginLoader.h"
+#include "llvm/Support/Streams.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/Support/Timer.h"
#include "llvm/LinkAllPasses.h"
#include "llvm/LinkAllVMCore.h"
+#include <iostream>
#include <fstream>
#include <memory>
#include <algorithm>
static cl::list<const PassInfo*, bool, PassNameParser>
PassList(cl::desc("Optimizations available:"));
-static cl::opt<bool> NoCompress("disable-compression", cl::init(false),
+static cl::opt<bool> NoCompress("disable-compression", cl::init(true),
cl::desc("Don't compress the generated bytecode"));
// Other command line options...
static cl::opt<bool>
NoVerify("disable-verify", cl::desc("Do not verify result module"), cl::Hidden);
+static cl::opt<bool>
+VerifyEach("verify-each", cl::desc("Verify after each transform"));
+
+static cl::opt<bool>
+StripDebug("strip-debug",
+ cl::desc("Strip debugger symbol info from translation unit"));
+
+static cl::opt<bool>
+DisableInline("disable-inlining", cl::desc("Do not run the inliner pass"));
+
+static cl::opt<bool>
+DisableOptimizations("disable-opt",
+ cl::desc("Do not run any optimization passes"));
+
+static cl::opt<bool>
+StandardCompileOpts("std-compile-opts",
+ cl::desc("Include the standard compile time optimizations"));
+
static cl::opt<bool>
Quiet("q", cl::desc("Obsolete option"), cl::Hidden);
virtual bool runOnModule(Module &M) {
if (!Quiet) {
- std::cout << "Printing analysis '" << PassToPrint->getPassName()
- << "':\n";
- getAnalysisID<Pass>(PassToPrint).print(std::cout, &M);
+ cout << "Printing analysis '" << PassToPrint->getPassName() << "':\n";
+ getAnalysisID<Pass>(PassToPrint).print(cout, &M);
}
// Get and print pass...
virtual bool runOnFunction(Function &F) {
if (!Quiet) {
- std::cout << "Printing analysis '" << PassToPrint->getPassName()
- << "' for function '" << F.getName() << "':\n";
+ cout << "Printing analysis '" << PassToPrint->getPassName()
+ << "' for function '" << F.getName() << "':\n";
}
// Get and print pass...
- getAnalysisID<Pass>(PassToPrint).print(std::cout, F.getParent());
+ getAnalysisID<Pass>(PassToPrint).print(cout, F.getParent());
return false;
}
virtual bool runOnBasicBlock(BasicBlock &BB) {
if (!Quiet) {
- std::cout << "Printing Analysis info for BasicBlock '" << BB.getName()
- << "': Pass " << PassToPrint->getPassName() << ":\n";
+ cout << "Printing Analysis info for BasicBlock '" << BB.getName()
+ << "': Pass " << PassToPrint->getPassName() << ":\n";
}
// Get and print pass...
- getAnalysisID<Pass>(PassToPrint).print(
- std::cout, BB.getParent()->getParent());
+ getAnalysisID<Pass>(PassToPrint).print(cout, BB.getParent()->getParent());
return false;
}
}
};
+inline void addPass(PassManager &PM, Pass *P) {
+ // Add the pass to the pass manager...
+ PM.add(P);
+
+ // If we are verifying all of the intermediate steps, add the verifier...
+ if (VerifyEach) PM.add(createVerifierPass());
+}
+
+void AddStandardCompilePasses(PassManager &PM) {
+ PM.add(createVerifierPass()); // Verify that input is correct
+
+ addPass(PM, createLowerSetJmpPass()); // Lower llvm.setjmp/.longjmp
+
+ // If the -strip-debug command line option was specified, do it.
+ if (StripDebug)
+ addPass(PM, createStripSymbolsPass(true));
+
+ if (DisableOptimizations) return;
+
+ addPass(PM, createRaiseAllocationsPass()); // call %malloc -> malloc inst
+ addPass(PM, createCFGSimplificationPass()); // Clean up disgusting code
+ addPass(PM, createPromoteMemoryToRegisterPass());// Kill useless allocas
+ addPass(PM, createGlobalOptimizerPass()); // Optimize out global vars
+ addPass(PM, createGlobalDCEPass()); // Remove unused fns and globs
+ addPass(PM, createIPConstantPropagationPass());// IP Constant Propagation
+ addPass(PM, createDeadArgEliminationPass()); // Dead argument elimination
+ addPass(PM, createInstructionCombiningPass()); // Clean up after IPCP & DAE
+ addPass(PM, createCFGSimplificationPass()); // Clean up after IPCP & DAE
+
+ addPass(PM, createPruneEHPass()); // Remove dead EH info
+
+ if (!DisableInline)
+ addPass(PM, createFunctionInliningPass()); // Inline small functions
+ addPass(PM, createArgumentPromotionPass()); // Scalarize uninlined fn args
+
+ addPass(PM, createTailDuplicationPass()); // Simplify cfg by copying code
+ addPass(PM, createInstructionCombiningPass()); // Cleanup for scalarrepl.
+ addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
+ addPass(PM, createScalarReplAggregatesPass()); // Break up aggregate allocas
+ addPass(PM, createInstructionCombiningPass()); // Combine silly seq's
+ addPass(PM, createCondPropagationPass()); // Propagate conditionals
+
+ addPass(PM, createTailCallEliminationPass()); // Eliminate tail calls
+ addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
+ addPass(PM, createReassociatePass()); // Reassociate expressions
+ addPass(PM, createLoopRotatePass());
+ addPass(PM, createLICMPass()); // Hoist loop invariants
+ addPass(PM, createLoopUnswitchPass()); // Unswitch loops.
+ addPass(PM, createInstructionCombiningPass()); // Clean up after LICM/reassoc
+ addPass(PM, createIndVarSimplifyPass()); // Canonicalize indvars
+ addPass(PM, createLoopUnrollPass()); // Unroll small loops
+ addPass(PM, createInstructionCombiningPass()); // Clean up after the unroller
+ addPass(PM, createLoadValueNumberingPass()); // GVN for load instructions
+ addPass(PM, createGCSEPass()); // Remove common subexprs
+ addPass(PM, createSCCPPass()); // Constant prop with SCCP
+
+ // Run instcombine after redundancy elimination to exploit opportunities
+ // opened up by them.
+ addPass(PM, createInstructionCombiningPass());
+ addPass(PM, createCondPropagationPass()); // Propagate conditionals
+
+ addPass(PM, createDeadStoreEliminationPass()); // Delete dead stores
+ addPass(PM, createAggressiveDCEPass()); // SSA based 'Aggressive DCE'
+ addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
+ addPass(PM, createSimplifyLibCallsPass()); // Library Call Optimizations
+ addPass(PM, createDeadTypeEliminationPass()); // Eliminate dead types
+ addPass(PM, createConstantMergePass()); // Merge dup global constants
+}
+
} // anonymous namespace
// main for opt
//
int main(int argc, char **argv) {
+ llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
try {
cl::ParseCommandLineOptions(argc, argv,
" llvm .bc -> .bc modular optimizer and analysis printer \n");
std::string ErrorMessage;
// Load the input module...
- std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename, &ErrorMessage));
+ std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename,
+ Compressor::decompressToNewBuffer, &ErrorMessage));
if (M.get() == 0) {
- std::cerr << argv[0] << ": ";
+ cerr << argv[0] << ": ";
if (ErrorMessage.size())
- std::cerr << ErrorMessage << "\n";
+ cerr << ErrorMessage << "\n";
else
- std::cerr << "bytecode didn't read correctly.\n";
+ cerr << "bytecode didn't read correctly.\n";
return 1;
}
if (OutputFilename != "-") {
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";
+ 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 |
Out = new std::ofstream(OutputFilename.c_str(), io_mode);
if (!Out->good()) {
- std::cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
+ cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
return 1;
}
// Add an appropriate TargetData instance for this module...
Passes.add(new TargetData(M.get()));
+ // If -std-compile-opts is given, add in all the standard compilation
+ // optimizations first. This will handle -strip-debug, -disable-inline,
+ // and -disable-opt as well.
+ if (StandardCompileOpts)
+ AddStandardCompilePasses(Passes);
+
+ // otherwise if the -strip-debug command line option was specified, add it.
+ else if (StripDebug)
+ addPass(Passes, createStripSymbolsPass(true));
+
// Create a new optimization pass for each one specified on the command line
for (unsigned i = 0; i < PassList.size(); ++i) {
const PassInfo *PassInf = PassList[i];
Pass *P = 0;
if (PassInf->getNormalCtor())
P = PassInf->getNormalCtor()();
- else if (PassInf->getTargetCtor()) {
- assert(target.get() && "Could not allocate target machine!");
- P = PassInf->getTargetCtor()(*target.get());
- } else
- std::cerr << argv[0] << ": cannot create pass: "
- << PassInf->getPassName() << "\n";
+ else
+ cerr << argv[0] << ": cannot create pass: "
+ << PassInf->getPassName() << "\n";
if (P) {
- Passes.add(P);
+ addPass(Passes, P);
if (AnalyzeOnly) {
if (dynamic_cast<BasicBlockPass*>(P))
}
if (PrintEachXForm)
- Passes.add(new PrintModulePass(&std::cerr));
+ Passes.add(new PrintModulePass(&cerr));
}
// Check that the module is well formed on completion of optimization
- if (!NoVerify)
+ if (!NoVerify && !VerifyEach)
Passes.add(createVerifierPass());
// Write bytecode out to disk or cout as the last step...
+ OStream L(*Out);
if (!NoOutput && !AnalyzeOnly)
- Passes.add(new WriteBytecodePass(Out, Out != &std::cout, !NoCompress));
+ Passes.add(new WriteBytecodePass(&L, false, !NoCompress));
// Now that we have all of the passes ready, run them.
Passes.run(*M.get());
return 0;
} catch (const std::string& msg) {
- std::cerr << argv[0] << ": " << msg << "\n";
+ cerr << argv[0] << ": " << msg << "\n";
} catch (...) {
- std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
+ cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
}
+ llvm_shutdown();
return 1;
}
projects / oota-llvm.git / blobdiff