//===----------------------------------------------------------------------===//
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Triple.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
#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/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
+#include "llvm/IR/Verifier.h"
#include "llvm/IRReader/IRReader.h"
#include "llvm/MC/SubtargetFeature.h"
#include "llvm/Pass.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/ToolOutputFile.h"
-#include "llvm/Target/TargetLibraryInfo.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 int compileModule(char **, LLVMContext &);
+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));
-// GetFileNameRoot - Helper function to get the basename of a filename.
-static inline std::string
-GetFileNameRoot(const std::string &InputFilename) {
- std::string IFN = InputFilename;
- std::string outputFilename;
- int Len = IFN.length();
- if ((Len > 2) &&
- IFN[Len-3] == '.' &&
- ((IFN[Len-2] == 'b' && IFN[Len-1] == 'c') ||
- (IFN[Len-2] == 'l' && IFN[Len-1] == 'l'))) {
- outputFilename = std::string(IFN.begin(), IFN.end()-3); // s/.bc/.s/
- } else {
- outputFilename = IFN;
- }
- return outputFilename;
-}
+static int compileModule(char **, LLVMContext &);
-static tool_output_file *GetOutputStream(const char *TargetName,
- Triple::OSType OS,
- const char *ProgName) {
+static std::unique_ptr<tool_output_file>
+GetOutputStream(const char *TargetName, Triple::OSType OS,
+ const char *ProgName) {
// If we don't yet have an output filename, make one.
if (OutputFilename.empty()) {
if (InputFilename == "-")
OutputFilename = "-";
else {
- OutputFilename = GetFileNameRoot(InputFilename);
+ // If InputFilename ends in .bc or .ll, remove it.
+ 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;
switch (FileType) {
case TargetMachine::CGFT_AssemblyFile:
sys::fs::OpenFlags OpenFlags = sys::fs::F_None;
if (!Binary)
OpenFlags |= sys::fs::F_Text;
- tool_output_file *FDOut = new tool_output_file(OutputFilename, EC, OpenFlags);
+ auto FDOut = llvm::make_unique<tool_output_file>(OutputFilename, EC,
+ OpenFlags);
if (EC) {
errs() << EC.message() << '\n';
- delete FDOut;
return nullptr;
}
// Load the module to be compiled...
SMDiagnostic Err;
std::unique_ptr<Module> M;
- Module *mod = nullptr;
+ std::unique_ptr<MIRParser> MIR;
Triple TheTriple;
bool SkipModule = MCPU == "help" ||
(!MAttrs.empty() && MAttrs.front() == "help");
- // If user asked for the 'native' CPU, autodetect here. If autodection fails,
- // this will set the CPU to an empty string which tells the target to
- // pick a basic default.
- if (MCPU == "native")
- MCPU = sys::getHostCPUName();
-
// If user just wants to list available options, skip module loading
if (!SkipModule) {
- M.reset(ParseIRFile(InputFilename, Err, Context));
- mod = M.get();
- if (mod == nullptr) {
+ 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;
}
+ // Verify module immediately to catch problems before doInitialization() is
+ // called on any passes.
+ if (!NoVerify && verifyModule(*M, &errs())) {
+ errs() << argv[0] << ": " << InputFilename
+ << ": error: input module is broken!\n";
+ return 1;
+ }
+
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
- mod->setTargetTriple(Triple::normalize(TargetTriple));
- TheTriple = Triple(mod->getTargetTriple());
+ M->setTargetTriple(Triple::normalize(TargetTriple));
+ TheTriple = Triple(M->getTargetTriple());
} else {
TheTriple = Triple(Triple::normalize(TargetTriple));
}
return 1;
}
- // Package up features to be passed to target/subtarget
- std::string FeaturesStr;
- if (MAttrs.size()) {
- SubtargetFeatures Features;
- for (unsigned i = 0; i != MAttrs.size(); ++i)
- Features.AddFeature(MAttrs[i]);
- FeaturesStr = Features.getString();
- }
+ std::string CPUStr = getCPUStr(), FeaturesStr = getFeaturesStr();
CodeGenOpt::Level OLvl = CodeGenOpt::Default;
switch (OptLevel) {
Options.MCOptions.MCUseDwarfDirectory = EnableDwarfDirectory;
Options.MCOptions.AsmVerbose = AsmVerbose;
- std::unique_ptr<TargetMachine> target(
- TheTarget->createTargetMachine(TheTriple.getTriple(), MCPU, FeaturesStr,
+ std::unique_ptr<TargetMachine> Target(
+ TheTarget->createTargetMachine(TheTriple.getTriple(), CPUStr, FeaturesStr,
Options, RelocModel, CMModel, OLvl));
- assert(target.get() && "Could not allocate target machine!");
+
+ assert(Target && "Could not allocate target machine!");
// If we don't have a module then just exit now. We do this down
// here since the CPU/Feature help is underneath the target machine
if (SkipModule)
return 0;
- assert(mod && "Should have exited if we didn't have a module!");
- TargetMachine &Target = *target.get();
-
- if (GenerateSoftFloatCalls)
- FloatABIForCalls = FloatABI::Soft;
+ assert(M && "Should have exited if we didn't have a module!");
+ if (FloatABIForCalls != FloatABI::Default)
+ Options.FloatABIType = FloatABIForCalls;
// Figure out where we are going to send the output.
- std::unique_ptr<tool_output_file> Out(
- GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
+ std::unique_ptr<tool_output_file> Out =
+ GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]);
if (!Out) return 1;
// Build up all of the passes that we want to do to the module.
- PassManager PM;
+ legacy::PassManager PM;
// Add an appropriate TargetLibraryInfo pass for the module's triple.
- TargetLibraryInfo *TLI = new TargetLibraryInfo(TheTriple);
+ TargetLibraryInfoImpl TLII(Triple(M->getTargetTriple()));
+
+ // The -disable-simplify-libcalls flag actually disables all builtin optzns.
if (DisableSimplifyLibCalls)
- TLI->disableAllFunctions();
- PM.add(TLI);
+ TLII.disableAllFunctions();
+ PM.add(new TargetLibraryInfoWrapperPass(TLII));
// Add the target data from the target machine, if it exists, or the module.
- if (const DataLayout *DL = Target.getSubtargetImpl()->getDataLayout())
- mod->setDataLayout(DL);
- PM.add(new DataLayoutPass(mod));
+ M->setDataLayout(Target->createDataLayout());
+
+ // Override function attributes based on CPUStr, FeaturesStr, and command line
+ // flags.
+ setFunctionAttributes(CPUStr, FeaturesStr, *M);
if (RelaxAll.getNumOccurrences() > 0 &&
FileType != TargetMachine::CGFT_ObjectFile)
<< ": warning: ignoring -mc-relax-all because filetype != obj";
{
- formatted_raw_ostream FOS(Out->os());
+ raw_pwrite_stream *OS = &Out->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, FOS, 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();
- PM.run(*mod);
+ // 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