mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-05 13:30:38 +00:00
7593f34d67
The check to not allow -analyze and -disable-output at the same time was done before parsing the command line flags. Therefore it never triggered, and in case both options where used opt segfaulted. Fix this by moving this check a after command line parsing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120732 91177308-0d34-0410-b5e6-96231b3b80d8
631 lines
19 KiB
C++
631 lines
19 KiB
C++
//===- opt.cpp - The LLVM Modular Optimizer -------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Optimizations may be specified an arbitrary number of times on the command
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// line, They are run in the order specified.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/LLVMContext.h"
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#include "llvm/Module.h"
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#include "llvm/PassManager.h"
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#include "llvm/CallGraphSCCPass.h"
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#include "llvm/Bitcode/ReaderWriter.h"
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#include "llvm/Assembly/PrintModulePass.h"
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#include "llvm/Analysis/Verifier.h"
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#include "llvm/Analysis/LoopPass.h"
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#include "llvm/Analysis/RegionPass.h"
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#include "llvm/Analysis/CallGraph.h"
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#include "llvm/Target/TargetData.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Support/PassNameParser.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/IRReader.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/PluginLoader.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/StandardPasses.h"
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#include "llvm/Support/SystemUtils.h"
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#include "llvm/Support/ToolOutputFile.h"
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#include "llvm/LinkAllPasses.h"
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#include "llvm/LinkAllVMCore.h"
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#include <memory>
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#include <algorithm>
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using namespace llvm;
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// The OptimizationList is automatically populated with registered Passes by the
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// PassNameParser.
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//
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static cl::list<const PassInfo*, bool, PassNameParser>
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PassList(cl::desc("Optimizations available:"));
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// Other command line options...
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//
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static cl::opt<std::string>
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InputFilename(cl::Positional, cl::desc("<input bitcode file>"),
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cl::init("-"), cl::value_desc("filename"));
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static cl::opt<std::string>
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OutputFilename("o", cl::desc("Override output filename"),
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cl::value_desc("filename"));
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static cl::opt<bool>
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Force("f", cl::desc("Enable binary output on terminals"));
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static cl::opt<bool>
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PrintEachXForm("p", cl::desc("Print module after each transformation"));
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static cl::opt<bool>
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NoOutput("disable-output",
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cl::desc("Do not write result bitcode file"), cl::Hidden);
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static cl::opt<bool>
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OutputAssembly("S", cl::desc("Write output as LLVM assembly"));
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static cl::opt<bool>
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NoVerify("disable-verify", cl::desc("Do not verify result module"), cl::Hidden);
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static cl::opt<bool>
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VerifyEach("verify-each", cl::desc("Verify after each transform"));
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static cl::opt<bool>
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StripDebug("strip-debug",
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cl::desc("Strip debugger symbol info from translation unit"));
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static cl::opt<bool>
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DisableInline("disable-inlining", cl::desc("Do not run the inliner pass"));
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static cl::opt<bool>
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DisableOptimizations("disable-opt",
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cl::desc("Do not run any optimization passes"));
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static cl::opt<bool>
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DisableInternalize("disable-internalize",
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cl::desc("Do not mark all symbols as internal"));
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static cl::opt<bool>
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StandardCompileOpts("std-compile-opts",
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cl::desc("Include the standard compile time optimizations"));
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static cl::opt<bool>
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StandardLinkOpts("std-link-opts",
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cl::desc("Include the standard link time optimizations"));
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static cl::opt<bool>
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OptLevelO1("O1",
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cl::desc("Optimization level 1. Similar to llvm-gcc -O1"));
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static cl::opt<bool>
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OptLevelO2("O2",
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cl::desc("Optimization level 2. Similar to llvm-gcc -O2"));
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static cl::opt<bool>
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OptLevelO3("O3",
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cl::desc("Optimization level 3. Similar to llvm-gcc -O3"));
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static cl::opt<bool>
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UnitAtATime("funit-at-a-time",
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cl::desc("Enable IPO. This is same as llvm-gcc's -funit-at-a-time"),
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cl::init(true));
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static cl::opt<bool>
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DisableSimplifyLibCalls("disable-simplify-libcalls",
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cl::desc("Disable simplify-libcalls"));
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static cl::opt<bool>
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Quiet("q", cl::desc("Obsolete option"), cl::Hidden);
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static cl::alias
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QuietA("quiet", cl::desc("Alias for -q"), cl::aliasopt(Quiet));
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static cl::opt<bool>
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AnalyzeOnly("analyze", cl::desc("Only perform analysis, no optimization"));
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static cl::opt<std::string>
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DefaultDataLayout("default-data-layout",
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cl::desc("data layout string to use if not specified by module"),
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cl::value_desc("layout-string"), cl::init(""));
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// ---------- Define Printers for module and function passes ------------
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namespace {
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struct CallGraphSCCPassPrinter : public CallGraphSCCPass {
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static char ID;
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const PassInfo *PassToPrint;
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raw_ostream &Out;
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std::string PassName;
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CallGraphSCCPassPrinter(const PassInfo *PI, raw_ostream &out) :
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CallGraphSCCPass(ID), PassToPrint(PI), Out(out) {
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std::string PassToPrintName = PassToPrint->getPassName();
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PassName = "CallGraphSCCPass Printer: " + PassToPrintName;
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}
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virtual bool runOnSCC(CallGraphSCC &SCC) {
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if (!Quiet)
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Out << "Printing analysis '" << PassToPrint->getPassName() << "':\n";
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// Get and print pass...
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for (CallGraphSCC::iterator I = SCC.begin(), E = SCC.end(); I != E; ++I) {
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Function *F = (*I)->getFunction();
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if (F)
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getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
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F->getParent());
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}
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return false;
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}
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virtual const char *getPassName() const { return PassName.c_str(); }
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequiredID(PassToPrint->getTypeInfo());
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AU.setPreservesAll();
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}
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};
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char CallGraphSCCPassPrinter::ID = 0;
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struct ModulePassPrinter : public ModulePass {
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static char ID;
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const PassInfo *PassToPrint;
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raw_ostream &Out;
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std::string PassName;
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ModulePassPrinter(const PassInfo *PI, raw_ostream &out)
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: ModulePass(ID), PassToPrint(PI), Out(out) {
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std::string PassToPrintName = PassToPrint->getPassName();
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PassName = "ModulePass Printer: " + PassToPrintName;
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}
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virtual bool runOnModule(Module &M) {
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if (!Quiet)
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Out << "Printing analysis '" << PassToPrint->getPassName() << "':\n";
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// Get and print pass...
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getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out, &M);
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return false;
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}
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virtual const char *getPassName() const { return PassName.c_str(); }
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequiredID(PassToPrint->getTypeInfo());
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AU.setPreservesAll();
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}
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};
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char ModulePassPrinter::ID = 0;
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struct FunctionPassPrinter : public FunctionPass {
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const PassInfo *PassToPrint;
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raw_ostream &Out;
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static char ID;
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std::string PassName;
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FunctionPassPrinter(const PassInfo *PI, raw_ostream &out)
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: FunctionPass(ID), PassToPrint(PI), Out(out) {
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std::string PassToPrintName = PassToPrint->getPassName();
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PassName = "FunctionPass Printer: " + PassToPrintName;
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}
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virtual bool runOnFunction(Function &F) {
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if (!Quiet)
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Out << "Printing analysis '" << PassToPrint->getPassName()
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<< "' for function '" << F.getName() << "':\n";
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// Get and print pass...
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getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
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F.getParent());
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return false;
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}
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virtual const char *getPassName() const { return PassName.c_str(); }
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequiredID(PassToPrint->getTypeInfo());
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AU.setPreservesAll();
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}
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};
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char FunctionPassPrinter::ID = 0;
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struct LoopPassPrinter : public LoopPass {
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static char ID;
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const PassInfo *PassToPrint;
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raw_ostream &Out;
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std::string PassName;
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LoopPassPrinter(const PassInfo *PI, raw_ostream &out) :
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LoopPass(ID), PassToPrint(PI), Out(out) {
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std::string PassToPrintName = PassToPrint->getPassName();
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PassName = "LoopPass Printer: " + PassToPrintName;
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}
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virtual bool runOnLoop(Loop *L, LPPassManager &LPM) {
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if (!Quiet)
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Out << "Printing analysis '" << PassToPrint->getPassName() << "':\n";
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// Get and print pass...
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getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
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L->getHeader()->getParent()->getParent());
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return false;
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}
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virtual const char *getPassName() const { return PassName.c_str(); }
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequiredID(PassToPrint->getTypeInfo());
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AU.setPreservesAll();
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}
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};
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char LoopPassPrinter::ID = 0;
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struct RegionPassPrinter : public RegionPass {
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static char ID;
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const PassInfo *PassToPrint;
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raw_ostream &Out;
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std::string PassName;
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RegionPassPrinter(const PassInfo *PI, raw_ostream &out) : RegionPass(ID),
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PassToPrint(PI), Out(out) {
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std::string PassToPrintName = PassToPrint->getPassName();
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PassName = "LoopPass Printer: " + PassToPrintName;
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}
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virtual bool runOnRegion(Region *R, RGPassManager &RGM) {
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if (!Quiet) {
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Out << "Printing analysis '" << PassToPrint->getPassName() << "' for "
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<< "region: '" << R->getNameStr() << "' in function '"
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<< R->getEntry()->getParent()->getNameStr() << "':\n";
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}
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// Get and print pass...
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getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
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R->getEntry()->getParent()->getParent());
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return false;
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}
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virtual const char *getPassName() const { return "'Pass' Printer"; }
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequiredID(PassToPrint->getTypeInfo());
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AU.setPreservesAll();
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}
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};
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char RegionPassPrinter::ID = 0;
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struct BasicBlockPassPrinter : public BasicBlockPass {
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const PassInfo *PassToPrint;
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raw_ostream &Out;
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static char ID;
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std::string PassName;
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BasicBlockPassPrinter(const PassInfo *PI, raw_ostream &out)
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: BasicBlockPass(ID), PassToPrint(PI), Out(out) {
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std::string PassToPrintName = PassToPrint->getPassName();
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PassName = "BasicBlockPass Printer: " + PassToPrintName;
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}
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virtual bool runOnBasicBlock(BasicBlock &BB) {
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if (!Quiet)
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Out << "Printing Analysis info for BasicBlock '" << BB.getName()
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<< "': Pass " << PassToPrint->getPassName() << ":\n";
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// Get and print pass...
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getAnalysisID<Pass>(PassToPrint->getTypeInfo()).print(Out,
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BB.getParent()->getParent());
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return false;
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}
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virtual const char *getPassName() const { return PassName.c_str(); }
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequiredID(PassToPrint->getTypeInfo());
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AU.setPreservesAll();
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}
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};
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char BasicBlockPassPrinter::ID = 0;
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inline void addPass(PassManagerBase &PM, Pass *P) {
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// Add the pass to the pass manager...
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PM.add(P);
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// If we are verifying all of the intermediate steps, add the verifier...
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if (VerifyEach) PM.add(createVerifierPass());
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}
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/// AddOptimizationPasses - This routine adds optimization passes
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/// based on selected optimization level, OptLevel. This routine
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/// duplicates llvm-gcc behaviour.
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///
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/// OptLevel - Optimization Level
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void AddOptimizationPasses(PassManagerBase &MPM, PassManagerBase &FPM,
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unsigned OptLevel) {
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createStandardFunctionPasses(&FPM, OptLevel);
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llvm::Pass *InliningPass = 0;
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if (DisableInline) {
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// No inlining pass
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} else if (OptLevel) {
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unsigned Threshold = 225;
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if (OptLevel > 2)
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Threshold = 275;
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InliningPass = createFunctionInliningPass(Threshold);
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} else {
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InliningPass = createAlwaysInlinerPass();
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}
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createStandardModulePasses(&MPM, OptLevel,
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/*OptimizeSize=*/ false,
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UnitAtATime,
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/*UnrollLoops=*/ OptLevel > 1,
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!DisableSimplifyLibCalls,
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/*HaveExceptions=*/ true,
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InliningPass);
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}
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void AddStandardCompilePasses(PassManagerBase &PM) {
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PM.add(createVerifierPass()); // Verify that input is correct
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addPass(PM, createLowerSetJmpPass()); // Lower llvm.setjmp/.longjmp
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// If the -strip-debug command line option was specified, do it.
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if (StripDebug)
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addPass(PM, createStripSymbolsPass(true));
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if (DisableOptimizations) return;
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llvm::Pass *InliningPass = !DisableInline ? createFunctionInliningPass() : 0;
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// -std-compile-opts adds the same module passes as -O3.
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createStandardModulePasses(&PM, 3,
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/*OptimizeSize=*/ false,
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/*UnitAtATime=*/ true,
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/*UnrollLoops=*/ true,
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/*SimplifyLibCalls=*/ true,
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/*HaveExceptions=*/ true,
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InliningPass);
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}
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void AddStandardLinkPasses(PassManagerBase &PM) {
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PM.add(createVerifierPass()); // Verify that input is correct
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// If the -strip-debug command line option was specified, do it.
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if (StripDebug)
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addPass(PM, createStripSymbolsPass(true));
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if (DisableOptimizations) return;
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createStandardLTOPasses(&PM, /*Internalize=*/ !DisableInternalize,
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/*RunInliner=*/ !DisableInline,
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/*VerifyEach=*/ VerifyEach);
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}
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} // anonymous namespace
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//===----------------------------------------------------------------------===//
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// main for opt
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//
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int main(int argc, char **argv) {
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sys::PrintStackTraceOnErrorSignal();
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llvm::PrettyStackTraceProgram X(argc, argv);
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// Enable debug stream buffering.
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EnableDebugBuffering = true;
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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LLVMContext &Context = getGlobalContext();
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// Initialize passes
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PassRegistry &Registry = *PassRegistry::getPassRegistry();
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initializeCore(Registry);
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initializeScalarOpts(Registry);
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initializeIPO(Registry);
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initializeAnalysis(Registry);
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initializeIPA(Registry);
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initializeTransformUtils(Registry);
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initializeInstCombine(Registry);
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initializeInstrumentation(Registry);
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initializeTarget(Registry);
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cl::ParseCommandLineOptions(argc, argv,
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"llvm .bc -> .bc modular optimizer and analysis printer\n");
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if (AnalyzeOnly && NoOutput) {
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errs() << argv[0] << ": analyze mode conflicts with no-output mode.\n";
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return 1;
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}
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// Allocate a full target machine description only if necessary.
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// FIXME: The choice of target should be controllable on the command line.
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std::auto_ptr<TargetMachine> target;
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SMDiagnostic Err;
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// Load the input module...
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std::auto_ptr<Module> M;
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M.reset(ParseIRFile(InputFilename, Err, Context));
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if (M.get() == 0) {
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Err.Print(argv[0], errs());
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return 1;
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}
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// Figure out what stream we are supposed to write to...
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OwningPtr<tool_output_file> Out;
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if (NoOutput) {
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if (!OutputFilename.empty())
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errs() << "WARNING: The -o (output filename) option is ignored when\n"
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"the --disable-output option is used.\n";
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} else {
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// Default to standard output.
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if (OutputFilename.empty())
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OutputFilename = "-";
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std::string ErrorInfo;
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Out.reset(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
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raw_fd_ostream::F_Binary));
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if (!ErrorInfo.empty()) {
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errs() << ErrorInfo << '\n';
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return 1;
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}
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}
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// If the output is set to be emitted to standard out, and standard out is a
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// console, print out a warning message and refuse to do it. We don't
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// impress anyone by spewing tons of binary goo to a terminal.
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if (!Force && !NoOutput && !AnalyzeOnly && !OutputAssembly)
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if (CheckBitcodeOutputToConsole(Out->os(), !Quiet))
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NoOutput = true;
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// Create a PassManager to hold and optimize the collection of passes we are
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// about to build...
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//
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PassManager Passes;
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// Add an appropriate TargetData instance for this module...
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TargetData *TD = 0;
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const std::string &ModuleDataLayout = M.get()->getDataLayout();
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if (!ModuleDataLayout.empty())
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TD = new TargetData(ModuleDataLayout);
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else if (!DefaultDataLayout.empty())
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TD = new TargetData(DefaultDataLayout);
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if (TD)
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Passes.add(TD);
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OwningPtr<PassManager> FPasses;
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if (OptLevelO1 || OptLevelO2 || OptLevelO3) {
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FPasses.reset(new PassManager());
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if (TD)
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FPasses->add(new TargetData(*TD));
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}
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// If the -strip-debug command line option was specified, add it. If
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// -std-compile-opts was also specified, it will handle StripDebug.
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|
if (StripDebug && !StandardCompileOpts)
|
|
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) {
|
|
// Check to see if -std-compile-opts was specified before this option. If
|
|
// so, handle it.
|
|
if (StandardCompileOpts &&
|
|
StandardCompileOpts.getPosition() < PassList.getPosition(i)) {
|
|
AddStandardCompilePasses(Passes);
|
|
StandardCompileOpts = false;
|
|
}
|
|
|
|
if (StandardLinkOpts &&
|
|
StandardLinkOpts.getPosition() < PassList.getPosition(i)) {
|
|
AddStandardLinkPasses(Passes);
|
|
StandardLinkOpts = false;
|
|
}
|
|
|
|
if (OptLevelO1 && OptLevelO1.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, 1);
|
|
OptLevelO1 = false;
|
|
}
|
|
|
|
if (OptLevelO2 && OptLevelO2.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, 2);
|
|
OptLevelO2 = false;
|
|
}
|
|
|
|
if (OptLevelO3 && OptLevelO3.getPosition() < PassList.getPosition(i)) {
|
|
AddOptimizationPasses(Passes, *FPasses, 3);
|
|
OptLevelO3 = false;
|
|
}
|
|
|
|
const PassInfo *PassInf = PassList[i];
|
|
Pass *P = 0;
|
|
if (PassInf->getNormalCtor())
|
|
P = PassInf->getNormalCtor()();
|
|
else
|
|
errs() << argv[0] << ": cannot create pass: "
|
|
<< PassInf->getPassName() << "\n";
|
|
if (P) {
|
|
PassKind Kind = P->getPassKind();
|
|
addPass(Passes, P);
|
|
|
|
if (AnalyzeOnly) {
|
|
switch (Kind) {
|
|
case PT_BasicBlock:
|
|
Passes.add(new BasicBlockPassPrinter(PassInf, Out->os()));
|
|
break;
|
|
case PT_Region:
|
|
Passes.add(new RegionPassPrinter(PassInf, Out->os()));
|
|
break;
|
|
case PT_Loop:
|
|
Passes.add(new LoopPassPrinter(PassInf, Out->os()));
|
|
break;
|
|
case PT_Function:
|
|
Passes.add(new FunctionPassPrinter(PassInf, Out->os()));
|
|
break;
|
|
case PT_CallGraphSCC:
|
|
Passes.add(new CallGraphSCCPassPrinter(PassInf, Out->os()));
|
|
break;
|
|
default:
|
|
Passes.add(new ModulePassPrinter(PassInf, Out->os()));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (PrintEachXForm)
|
|
Passes.add(createPrintModulePass(&errs()));
|
|
}
|
|
|
|
// If -std-compile-opts was specified at the end of the pass list, add them.
|
|
if (StandardCompileOpts) {
|
|
AddStandardCompilePasses(Passes);
|
|
StandardCompileOpts = false;
|
|
}
|
|
|
|
if (StandardLinkOpts) {
|
|
AddStandardLinkPasses(Passes);
|
|
StandardLinkOpts = false;
|
|
}
|
|
|
|
if (OptLevelO1)
|
|
AddOptimizationPasses(Passes, *FPasses, 1);
|
|
|
|
if (OptLevelO2)
|
|
AddOptimizationPasses(Passes, *FPasses, 2);
|
|
|
|
if (OptLevelO3)
|
|
AddOptimizationPasses(Passes, *FPasses, 3);
|
|
|
|
if (OptLevelO1 || OptLevelO2 || OptLevelO3)
|
|
FPasses->run(*M.get());
|
|
|
|
// Check that the module is well formed on completion of optimization
|
|
if (!NoVerify && !VerifyEach)
|
|
Passes.add(createVerifierPass());
|
|
|
|
// Write bitcode or assembly to the output as the last step...
|
|
if (!NoOutput && !AnalyzeOnly) {
|
|
if (OutputAssembly)
|
|
Passes.add(createPrintModulePass(&Out->os()));
|
|
else
|
|
Passes.add(createBitcodeWriterPass(Out->os()));
|
|
}
|
|
|
|
// Now that we have all of the passes ready, run them.
|
|
Passes.run(*M.get());
|
|
|
|
// Declare success.
|
|
if (!NoOutput)
|
|
Out->keep();
|
|
|
|
return 0;
|
|
}
|