mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-04-06 09:41:38 +00:00
2a04344d58
This puts all the global PassManager debugging flags, like -print-after-all and -time-passes, behind a managed static. This eliminates their static initializers and, more importantly, exit-time destructors. The only behavioral change I anticipate is that tools need to initialize the PassManager before parsing the command line in order to export these options, which makes sense. Tools that already initialize the standard passes (opt/llc) don't need to do anything new. llvm-svn: 190974
101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
//===-- llvm-diff.cpp - Module comparator command-line driver ---*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the command-line driver for the difference engine.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "DiffLog.h"
|
|
#include "DifferenceEngine.h"
|
|
#include "llvm/ADT/DenseMap.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/IR/Type.h"
|
|
#include "llvm/IRReader/IRReader.h"
|
|
#include "llvm/PassManager.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/SourceMgr.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include <string>
|
|
#include <utility>
|
|
|
|
|
|
using namespace llvm;
|
|
|
|
/// Reads a module from a file. On error, messages are written to stderr
|
|
/// and null is returned.
|
|
static Module *ReadModule(LLVMContext &Context, StringRef Name) {
|
|
SMDiagnostic Diag;
|
|
Module *M = ParseIRFile(Name, Diag, Context);
|
|
if (!M)
|
|
Diag.print("llvm-diff", errs());
|
|
return M;
|
|
}
|
|
|
|
static void diffGlobal(DifferenceEngine &Engine, Module *L, Module *R,
|
|
StringRef Name) {
|
|
// Drop leading sigils from the global name.
|
|
if (Name.startswith("@")) Name = Name.substr(1);
|
|
|
|
Function *LFn = L->getFunction(Name);
|
|
Function *RFn = R->getFunction(Name);
|
|
if (LFn && RFn)
|
|
Engine.diff(LFn, RFn);
|
|
else if (!LFn && !RFn)
|
|
errs() << "No function named @" << Name << " in either module\n";
|
|
else if (!LFn)
|
|
errs() << "No function named @" << Name << " in left module\n";
|
|
else
|
|
errs() << "No function named @" << Name << " in right module\n";
|
|
}
|
|
|
|
static cl::opt<std::string> LeftFilename(cl::Positional,
|
|
cl::desc("<first file>"),
|
|
cl::Required);
|
|
static cl::opt<std::string> RightFilename(cl::Positional,
|
|
cl::desc("<second file>"),
|
|
cl::Required);
|
|
static cl::list<std::string> GlobalsToCompare(cl::Positional,
|
|
cl::desc("<globals to compare>"));
|
|
|
|
int main(int argc, char **argv) {
|
|
// Initialize PassManager for -time-passes support.
|
|
initializePassManager();
|
|
|
|
cl::ParseCommandLineOptions(argc, argv);
|
|
|
|
LLVMContext Context;
|
|
|
|
// Load both modules. Die if that fails.
|
|
Module *LModule = ReadModule(Context, LeftFilename);
|
|
Module *RModule = ReadModule(Context, RightFilename);
|
|
if (!LModule || !RModule) return 1;
|
|
|
|
DiffConsumer Consumer;
|
|
DifferenceEngine Engine(Consumer);
|
|
|
|
// If any global names were given, just diff those.
|
|
if (!GlobalsToCompare.empty()) {
|
|
for (unsigned I = 0, E = GlobalsToCompare.size(); I != E; ++I)
|
|
diffGlobal(Engine, LModule, RModule, GlobalsToCompare[I]);
|
|
|
|
// Otherwise, diff everything in the module.
|
|
} else {
|
|
Engine.diff(LModule, RModule);
|
|
}
|
|
|
|
delete LModule;
|
|
delete RModule;
|
|
|
|
return Consumer.hadDifferences();
|
|
}
|