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must be called in the pass's constructor. This function uses static dependency declarations to recursively initialize the pass's dependencies. Clients that only create passes through the createFooPass() APIs will require no changes. Clients that want to use the CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h before parsing commandline arguments. I have tested this with all standard configurations of clang and llvm-gcc on Darwin. It is possible that there are problems with the static dependencies that will only be visible with non-standard options. If you encounter any crash in pass registration/creation, please send the testcase to me directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116820 91177308-0d34-0410-b5e6-96231b3b80d8
173 lines
5.7 KiB
C++
173 lines
5.7 KiB
C++
//===- bugpoint.cpp - The LLVM Bugpoint utility ---------------------------===//
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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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// This program is an automated compiler debugger tool. It is used to narrow
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// down miscompilations and crash problems to a specific pass in the compiler,
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// and the specific Module or Function input that is causing the problem.
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//
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//===----------------------------------------------------------------------===//
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#include "BugDriver.h"
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#include "ToolRunner.h"
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#include "llvm/LinkAllPasses.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/Support/PassNameParser.h"
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#include "llvm/Support/CommandLine.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/System/Process.h"
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#include "llvm/System/Signals.h"
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#include "llvm/System/Valgrind.h"
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#include "llvm/LinkAllVMCore.h"
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using namespace llvm;
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static cl::opt<bool>
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FindBugs("find-bugs", cl::desc("Run many different optimization sequences "
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"on program to find bugs"), cl::init(false));
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static cl::list<std::string>
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InputFilenames(cl::Positional, cl::OneOrMore,
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cl::desc("<input llvm ll/bc files>"));
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static cl::opt<unsigned>
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TimeoutValue("timeout", cl::init(300), cl::value_desc("seconds"),
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cl::desc("Number of seconds program is allowed to run before it "
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"is killed (default is 300s), 0 disables timeout"));
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static cl::opt<int>
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MemoryLimit("mlimit", cl::init(-1), cl::value_desc("MBytes"),
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cl::desc("Maximum amount of memory to use. 0 disables check."
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" Defaults to 100MB (800MB under valgrind)."));
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static cl::opt<bool>
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UseValgrind("enable-valgrind",
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cl::desc("Run optimizations through valgrind"));
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// The AnalysesList 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("Passes available:"), cl::ZeroOrMore);
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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<std::string>
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OverrideTriple("mtriple", cl::desc("Override target triple for module"));
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/// BugpointIsInterrupted - Set to true when the user presses ctrl-c.
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bool llvm::BugpointIsInterrupted = false;
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static void BugpointInterruptFunction() {
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BugpointIsInterrupted = true;
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}
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// Hack to capture a pass list.
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namespace {
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class AddToDriver : public PassManager {
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BugDriver &D;
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public:
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AddToDriver(BugDriver &_D) : D(_D) {}
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virtual void add(Pass *P) {
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const void *ID = P->getPassID();
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const PassInfo *PI = PassRegistry::getPassRegistry()->getPassInfo(ID);
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D.addPass(PI->getPassArgument());
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}
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};
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}
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int main(int argc, char **argv) {
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llvm::sys::PrintStackTraceOnErrorSignal();
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llvm::PrettyStackTraceProgram X(argc, argv);
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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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 automatic testcase reducer. See\nhttp://"
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"llvm.org/cmds/bugpoint.html"
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" for more information.\n");
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sys::SetInterruptFunction(BugpointInterruptFunction);
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LLVMContext& Context = getGlobalContext();
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// If we have an override, set it and then track the triple we want Modules
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// to use.
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if (!OverrideTriple.empty()) {
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TargetTriple.setTriple(Triple::normalize(OverrideTriple));
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outs() << "Override triple set to '" << TargetTriple.getTriple() << "'\n";
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}
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if (MemoryLimit < 0) {
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// Set the default MemoryLimit. Be sure to update the flag's description if
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// you change this.
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if (sys::RunningOnValgrind() || UseValgrind)
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MemoryLimit = 800;
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else
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MemoryLimit = 100;
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}
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BugDriver D(argv[0], FindBugs, TimeoutValue, MemoryLimit,
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UseValgrind, Context);
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if (D.addSources(InputFilenames)) return 1;
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AddToDriver PM(D);
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if (StandardCompileOpts) {
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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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createFunctionInliningPass());
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}
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if (StandardLinkOpts)
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createStandardLTOPasses(&PM, /*Internalize=*/true,
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/*RunInliner=*/true,
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/*VerifyEach=*/false);
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for (std::vector<const PassInfo*>::iterator I = PassList.begin(),
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E = PassList.end();
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I != E; ++I) {
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const PassInfo* PI = *I;
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D.addPass(PI->getPassArgument());
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}
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// Bugpoint has the ability of generating a plethora of core files, so to
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// avoid filling up the disk, we prevent it
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sys::Process::PreventCoreFiles();
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std::string Error;
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bool Failure = D.run(Error);
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if (!Error.empty()) {
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errs() << Error;
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return 1;
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}
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return Failure;
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}
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