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896f064a49
folding the code into the main Analysis library. There already wasn't much of a distinction between Analysis and IPA. A number of the passes in Analysis are actually IPA passes, and there doesn't seem to be any advantage to separating them. Moreover, it makes it hard to have interactions between analyses that are both local and interprocedural. In trying to make the Alias Analysis infrastructure work with the new pass manager, it becomes particularly awkward to navigate this split. I've tried to find all the places where we referenced this, but I may have missed some. I have also adjusted the C API to continue to be equivalently functional after this change. Differential Revision: http://reviews.llvm.org/D12075 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@245318 91177308-0d34-0410-b5e6-96231b3b80d8
211 lines
6.5 KiB
C++
211 lines
6.5 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/IR/LLVMContext.h"
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/IR/LegacyPassNameParser.h"
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#include "llvm/LinkAllIR.h"
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#include "llvm/LinkAllPasses.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/Process.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/Valgrind.h"
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#include "llvm/Transforms/IPO/PassManagerBuilder.h"
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//Enable this macro to debug bugpoint itself.
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//#define DEBUG_BUGPOINT 1
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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 400MB (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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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. Identical to 'opt -O1'"));
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static cl::opt<bool>
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OptLevelO2("O2",
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cl::desc("Optimization level 2. Identical to 'opt -O2'"));
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static cl::opt<bool>
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OptLevelO3("O3",
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cl::desc("Optimization level 3. Identical to 'opt -O3'"));
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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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#ifndef DEBUG_BUGPOINT
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static void BugpointInterruptFunction() {
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BugpointIsInterrupted = true;
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}
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#endif
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// Hack to capture a pass list.
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namespace {
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class AddToDriver : public legacy::FunctionPassManager {
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BugDriver &D;
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public:
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AddToDriver(BugDriver &_D) : FunctionPassManager(nullptr), D(_D) {}
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void add(Pass *P) override {
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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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#ifdef LINK_POLLY_INTO_TOOLS
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namespace polly {
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void initializePollyPasses(llvm::PassRegistry &Registry);
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}
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#endif
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int main(int argc, char **argv) {
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#ifndef DEBUG_BUGPOINT
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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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#endif
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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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initializeObjCARCOpts(Registry);
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initializeVectorization(Registry);
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initializeIPO(Registry);
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initializeAnalysis(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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#ifdef LINK_POLLY_INTO_TOOLS
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polly::initializePollyPasses(Registry);
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#endif
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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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#ifndef DEBUG_BUGPOINT
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sys::SetInterruptFunction(BugpointInterruptFunction);
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#endif
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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 = 400;
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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 (StandardLinkOpts) {
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PassManagerBuilder Builder;
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Builder.Inliner = createFunctionInliningPass();
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Builder.populateLTOPassManager(PM);
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}
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if (OptLevelO1 || OptLevelO2 || OptLevelO3) {
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PassManagerBuilder Builder;
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if (OptLevelO1)
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Builder.Inliner = createAlwaysInlinerPass();
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else if (OptLevelO2)
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Builder.Inliner = createFunctionInliningPass(225);
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else
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Builder.Inliner = createFunctionInliningPass(275);
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// Note that although clang/llvm-gcc use two separate passmanagers
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// here, it shouldn't normally make a difference.
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Builder.populateFunctionPassManager(PM);
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Builder.populateModulePassManager(PM);
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}
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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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#ifndef DEBUG_BUGPOINT
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sys::Process::PreventCoreFiles();
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#endif
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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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