#include "llvm/CodeGen/CommandFlags.h"
#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
#include "llvm/CodeGen/LinkAllCodegenComponents.h"
+#include "llvm/CodeGen/MIRParser/MIRParser.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/IRPrintingPasses.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetSubtargetInfo.h"
+#include "llvm/Transforms/Utils/Cloning.h"
#include <memory>
using namespace llvm;
cl::desc("Add comments to directives."),
cl::init(true));
+static cl::opt<bool>
+ CompileTwice("compile-twice", cl::Hidden,
+ cl::desc("Run everything twice, re-using the same pass "
+ "manager and verify the the result is the same."),
+ cl::init(false));
+
static int compileModule(char **, LLVMContext &);
static std::unique_ptr<tool_output_file>
StringRef IFN = InputFilename;
if (IFN.endswith(".bc") || IFN.endswith(".ll"))
OutputFilename = IFN.drop_back(3);
+ else if (IFN.endswith(".mir"))
+ OutputFilename = IFN.drop_back(4);
else
OutputFilename = IFN;
// Load the module to be compiled...
SMDiagnostic Err;
std::unique_ptr<Module> M;
+ std::unique_ptr<MIRParser> MIR;
Triple TheTriple;
bool SkipModule = MCPU == "help" ||
// If user just wants to list available options, skip module loading
if (!SkipModule) {
- M = parseIRFile(InputFilename, Err, Context);
+ if (StringRef(InputFilename).endswith_lower(".mir")) {
+ MIR = createMIRParserFromFile(InputFilename, Err, Context);
+ if (MIR) {
+ M = MIR->parseLLVMModule();
+ assert(M && "parseLLVMModule should exit on failure");
+ }
+ } else
+ M = parseIRFile(InputFilename, Err, Context);
if (!M) {
Err.print(argv[0], errs());
return 1;
PM.add(new TargetLibraryInfoWrapperPass(TLII));
// Add the target data from the target machine, if it exists, or the module.
- if (const DataLayout *DL = Target->getDataLayout())
- M->setDataLayout(*DL);
+ M->setDataLayout(Target->createDataLayout());
- // Override function attributes based on CPUStr, FeaturesStr, and Options.
- // Pass AlwaysRecordAttrs=false as we want to override an attribute only when
- // the corresponding cl::opt has been provided on llc's command line.
- setFunctionAttributes(CPUStr, FeaturesStr, Options, *M,
- /* AlwaysRecordAttrs */ false);
+ // Override function attributes based on CPUStr, FeaturesStr, and command line
+ // flags.
+ setFunctionAttributes(CPUStr, FeaturesStr, *M);
if (RelaxAll.getNumOccurrences() > 0 &&
FileType != TargetMachine::CGFT_ObjectFile)
{
raw_pwrite_stream *OS = &Out->os();
- std::unique_ptr<buffer_ostream> BOS;
- if (FileType != TargetMachine::CGFT_AssemblyFile &&
- !Out->os().supportsSeeking()) {
- BOS = make_unique<buffer_ostream>(*OS);
+
+ // Manually do the buffering rather than using buffer_ostream,
+ // so we can memcmp the contents in CompileTwice mode
+ SmallVector<char, 0> Buffer;
+ std::unique_ptr<raw_svector_ostream> BOS;
+ if ((FileType != TargetMachine::CGFT_AssemblyFile &&
+ !Out->os().supportsSeeking()) ||
+ CompileTwice) {
+ BOS = make_unique<raw_svector_ostream>(Buffer);
OS = BOS.get();
}
+ AnalysisID StartBeforeID = nullptr;
AnalysisID StartAfterID = nullptr;
AnalysisID StopAfterID = nullptr;
const PassRegistry *PR = PassRegistry::getPassRegistry();
- if (!StartAfter.empty()) {
- const PassInfo *PI = PR->getPassInfo(StartAfter);
- if (!PI) {
- errs() << argv[0] << ": start-after pass is not registered.\n";
+ if (!RunPass.empty()) {
+ if (!StartAfter.empty() || !StopAfter.empty()) {
+ errs() << argv[0] << ": start-after and/or stop-after passes are "
+ "redundant when run-pass is specified.\n";
return 1;
}
- StartAfterID = PI->getTypeInfo();
- }
- if (!StopAfter.empty()) {
- const PassInfo *PI = PR->getPassInfo(StopAfter);
+ const PassInfo *PI = PR->getPassInfo(RunPass);
if (!PI) {
- errs() << argv[0] << ": stop-after pass is not registered.\n";
+ errs() << argv[0] << ": run-pass pass is not registered.\n";
return 1;
}
- StopAfterID = PI->getTypeInfo();
+ StopAfterID = StartBeforeID = PI->getTypeInfo();
+ } else {
+ if (!StartAfter.empty()) {
+ const PassInfo *PI = PR->getPassInfo(StartAfter);
+ if (!PI) {
+ errs() << argv[0] << ": start-after pass is not registered.\n";
+ return 1;
+ }
+ StartAfterID = PI->getTypeInfo();
+ }
+ if (!StopAfter.empty()) {
+ const PassInfo *PI = PR->getPassInfo(StopAfter);
+ if (!PI) {
+ errs() << argv[0] << ": stop-after pass is not registered.\n";
+ return 1;
+ }
+ StopAfterID = PI->getTypeInfo();
+ }
}
// Ask the target to add backend passes as necessary.
- if (Target->addPassesToEmitFile(PM, *OS, FileType, NoVerify, StartAfterID,
- StopAfterID)) {
+ if (Target->addPassesToEmitFile(PM, *OS, FileType, NoVerify, StartBeforeID,
+ StartAfterID, StopAfterID, MIR.get())) {
errs() << argv[0] << ": target does not support generation of this"
<< " file type!\n";
return 1;
// Before executing passes, print the final values of the LLVM options.
cl::PrintOptionValues();
+ // If requested, run the pass manager over the same module again,
+ // to catch any bugs due to persistent state in the passes. Note that
+ // opt has the same functionality, so it may be worth abstracting this out
+ // in the future.
+ SmallVector<char, 0> CompileTwiceBuffer;
+ if (CompileTwice) {
+ std::unique_ptr<Module> M2(llvm::CloneModule(M.get()));
+ PM.run(*M2);
+ CompileTwiceBuffer = Buffer;
+ Buffer.clear();
+ }
+
PM.run(*M);
+
+ // Compare the two outputs and make sure they're the same
+ if (CompileTwice) {
+ if (Buffer.size() != CompileTwiceBuffer.size() ||
+ (memcmp(Buffer.data(), CompileTwiceBuffer.data(), Buffer.size()) !=
+ 0)) {
+ errs()
+ << "Running the pass manager twice changed the output.\n"
+ "Writing the result of the second run to the specified output\n"
+ "To generate the one-run comparison binary, just run without\n"
+ "the compile-twice option\n";
+ Out->os() << Buffer;
+ Out->keep();
+ return 1;
+ }
+ }
+
+ if (BOS) {
+ Out->os() << Buffer;
+ }
}
// Declare success.
projects / oota-llvm.git / blobdiff