f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
//===-- llvm-diff.cpp - Module comparator command-line driver ---*- C++ -*-===//
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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 file defines the command-line driver for the difference engine.
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//
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//===----------------------------------------------------------------------===//
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#include "DiffLog.h"
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#include "DifferenceEngine.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/Type.h"
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#include "llvm/IRReader/IRReader.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/raw_ostream.h"
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#include <string>
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#include <utility>
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using namespace llvm;
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/// Reads a module from a file. On error, messages are written to stderr
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/// and null is returned.
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static Module *ReadModule(LLVMContext &Context, StringRef Name) {
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SMDiagnostic Diag;
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Module *M = ParseIRFile(Name, Diag, Context);
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if (!M)
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Diag.print("llvm-diff", errs());
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return M;
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}
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static void diffGlobal(DifferenceEngine &Engine, Module *L, Module *R,
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StringRef Name) {
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// Drop leading sigils from the global name.
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if (Name.startswith("@")) Name = Name.substr(1);
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Function *LFn = L->getFunction(Name);
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Function *RFn = R->getFunction(Name);
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if (LFn && RFn)
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Engine.diff(LFn, RFn);
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else if (!LFn && !RFn)
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errs() << "No function named @" << Name << " in either module\n";
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else if (!LFn)
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errs() << "No function named @" << Name << " in left module\n";
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else
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errs() << "No function named @" << Name << " in right module\n";
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}
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static cl::opt<std::string> LeftFilename(cl::Positional,
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cl::desc("<first file>"),
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cl::Required);
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static cl::opt<std::string> RightFilename(cl::Positional,
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cl::desc("<second file>"),
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cl::Required);
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static cl::list<std::string> GlobalsToCompare(cl::Positional,
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cl::desc("<globals to compare>"));
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int main(int argc, char **argv) {
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cl::ParseCommandLineOptions(argc, argv);
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LLVMContext Context;
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// Load both modules. Die if that fails.
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Module *LModule = ReadModule(Context, LeftFilename);
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Module *RModule = ReadModule(Context, RightFilename);
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if (!LModule || !RModule) return 1;
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DiffConsumer Consumer;
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DifferenceEngine Engine(Consumer);
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// If any global names were given, just diff those.
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if (!GlobalsToCompare.empty()) {
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for (unsigned I = 0, E = GlobalsToCompare.size(); I != E; ++I)
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diffGlobal(Engine, LModule, RModule, GlobalsToCompare[I]);
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// Otherwise, diff everything in the module.
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} else {
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Engine.diff(LModule, RModule);
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}
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delete LModule;
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delete RModule;
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return Consumer.hadDifferences();
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}
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