void initializeUnreachableBlockElimPass(PassRegistry&);
void initializeUnreachableMachineBlockElimPass(PassRegistry&);
void initializeVerifierLegacyPassPass(PassRegistry&);
-void initializeVerifyUseListOrderPass(PassRegistry&);
void initializeVirtRegMapPass(PassRegistry&);
void initializeVirtRegRewriterPass(PassRegistry&);
void initializeInstSimplifierPass(PassRegistry&);
(void) llvm::createPartiallyInlineLibCallsPass();
(void) llvm::createScalarizerPass();
(void) llvm::createSeparateConstOffsetFromGEPPass();
- (void) llvm::createVerifyUseListOrderPass();
(void)new llvm::IntervalPartition();
(void)new llvm::FindUsedTypes();
/// createInternalizePass - Same as above, but with an empty exportList.
ModulePass *createInternalizePass();
-/// \brief Verify that use-list order doesn't change after shuffling.
-///
-/// \note This is a transformation, since the use-list order changes.
-ModulePass *createVerifyUseListOrderPass();
-
//===----------------------------------------------------------------------===//
/// createDeadArgEliminationPass - This pass removes arguments from functions
/// which are not used by the body of the function.
PruneEH.cpp
StripDeadPrototypes.cpp
StripSymbols.cpp
- VerifyUseListOrder.cpp
)
add_dependencies(LLVMipo intrinsics_gen)
initializeStripDebugDeclarePass(Registry);
initializeStripDeadDebugInfoPass(Registry);
initializeStripNonDebugSymbolsPass(Registry);
- initializeVerifyUseListOrderPass(Registry);
initializeBarrierNoopPass(Registry);
}
+++ /dev/null
-//===- VerifyUseListOrder.cpp - Use List Order Verifier ---------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Pass to verify use-list order doesn't change after serialization.
-//
-// Despite it being a verifier, this pass *does* transform the module, since it
-// shuffles the use-list of every value.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/IPO.h"
-
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/AsmParser/Parser.h"
-#include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/UseListOrder.h"
-#include "llvm/Pass.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/FileUtilities.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/SourceMgr.h"
-
-using namespace llvm;
-
-#define DEBUG_TYPE "use-list-order"
-
-namespace {
-
-struct TempFile {
- std::string Filename;
- FileRemover Remover;
- bool init(const std::string &Ext);
- bool writeBitcode(const Module &M) const;
- bool writeAssembly(const Module &M) const;
- std::unique_ptr<Module> readBitcode(LLVMContext &Context) const;
- std::unique_ptr<Module> readAssembly(LLVMContext &Context) const;
-};
-
-struct ValueMapping {
- DenseMap<const Value *, unsigned> IDs;
- std::vector<const Value *> Values;
-
- /// \brief Construct a value mapping for module.
- ///
- /// Creates mapping from every value in \c M to an ID. This mapping includes
- /// un-referencable values.
- ///
- /// Every \a Value that gets serialized in some way should be represented
- /// here. The order needs to be deterministic, but it's unnecessary to match
- /// the value-ids in the bitcode writer.
- ///
- /// All constants that are referenced by other values are included in the
- /// mapping, but others -- which wouldn't be serialized -- are not.
- ValueMapping(const Module &M);
-
- /// \brief Map a value.
- ///
- /// Maps a value. If it's a constant, maps all of its operands first.
- void map(const Value *V);
- unsigned lookup(const Value *V) const { return IDs.lookup(V); }
-};
-
-} // end namespace
-
-bool TempFile::init(const std::string &Ext) {
- SmallVector<char, 64> Vector;
- DEBUG(dbgs() << " - create-temp-file\n");
- if (auto EC = sys::fs::createTemporaryFile("use-list-order", Ext, Vector)) {
- (void)EC;
- DEBUG(dbgs() << "error: " << EC.message() << "\n");
- return true;
- }
- assert(!Vector.empty());
-
- Filename.assign(Vector.data(), Vector.data() + Vector.size());
- Remover.setFile(Filename);
- DEBUG(dbgs() << " - filename = " << Filename << "\n");
- return false;
-}
-
-bool TempFile::writeBitcode(const Module &M) const {
- DEBUG(dbgs() << " - write bitcode\n");
- std::string ErrorInfo;
- raw_fd_ostream OS(Filename.c_str(), ErrorInfo, sys::fs::F_None);
- if (!ErrorInfo.empty()) {
- DEBUG(dbgs() << "error: " << ErrorInfo << "\n");
- return true;
- }
-
- WriteBitcodeToFile(&M, OS);
- return false;
-}
-
-bool TempFile::writeAssembly(const Module &M) const {
- DEBUG(dbgs() << " - write assembly\n");
- std::string ErrorInfo;
- raw_fd_ostream OS(Filename.c_str(), ErrorInfo, sys::fs::F_Text);
- if (!ErrorInfo.empty()) {
- DEBUG(dbgs() << "error: " << ErrorInfo << "\n");
- return true;
- }
-
- OS << M;
- return false;
-}
-
-std::unique_ptr<Module> TempFile::readBitcode(LLVMContext &Context) const {
- DEBUG(dbgs() << " - read bitcode\n");
- ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOr =
- MemoryBuffer::getFile(Filename);
- if (!BufferOr) {
- DEBUG(dbgs() << "error: " << BufferOr.getError().message() << "\n");
- return nullptr;
- }
-
- std::unique_ptr<MemoryBuffer> Buffer = std::move(BufferOr.get());
- ErrorOr<Module *> ModuleOr = parseBitcodeFile(Buffer.release(), Context);
- if (!ModuleOr) {
- DEBUG(dbgs() << "error: " << ModuleOr.getError().message() << "\n");
- return nullptr;
- }
- return std::unique_ptr<Module>(ModuleOr.get());
-}
-
-std::unique_ptr<Module> TempFile::readAssembly(LLVMContext &Context) const {
- DEBUG(dbgs() << " - read assembly\n");
- SMDiagnostic Err;
- std::unique_ptr<Module> M(ParseAssemblyFile(Filename, Err, Context));
- if (!M.get())
- DEBUG(dbgs() << "error: "; Err.print("verify-use-list-order", dbgs()));
- return M;
-}
-
-ValueMapping::ValueMapping(const Module &M) {
- // Every value should be mapped, including things like void instructions and
- // basic blocks that are kept out of the ValueEnumerator.
- //
- // The current mapping order makes it easier to debug the tables. It happens
- // to be similar to the ID mapping when writing ValueEnumerator, but they
- // aren't (and needn't be) in sync.
-
- // Globals.
- for (const GlobalVariable &G : M.globals())
- map(&G);
- for (const GlobalAlias &A : M.aliases())
- map(&A);
- for (const Function &F : M)
- map(&F);
-
- // Constants used by globals.
- for (const GlobalVariable &G : M.globals())
- if (G.hasInitializer())
- map(G.getInitializer());
- for (const GlobalAlias &A : M.aliases())
- map(A.getAliasee());
- for (const Function &F : M)
- if (F.hasPrefixData())
- map(F.getPrefixData());
-
- // Function bodies.
- for (const Function &F : M) {
- for (const Argument &A : F.args())
- map(&A);
- for (const BasicBlock &BB : F)
- map(&BB);
- for (const BasicBlock &BB : F)
- for (const Instruction &I : BB)
- map(&I);
-
- // Constants used by instructions.
- for (const BasicBlock &BB : F)
- for (const Instruction &I : BB)
- for (const Value *Op : I.operands())
- if ((isa<Constant>(Op) && !isa<GlobalValue>(*Op)) ||
- isa<InlineAsm>(Op))
- map(Op);
- }
-}
-
-void ValueMapping::map(const Value *V) {
- if (IDs.lookup(V))
- return;
-
- if (auto *C = dyn_cast<Constant>(V))
- if (!isa<GlobalValue>(C))
- for (const Value *Op : C->operands())
- map(Op);
-
- Values.push_back(V);
- IDs[V] = Values.size();
-}
-
-#ifndef NDEBUG
-static void dumpMapping(const ValueMapping &VM) {
- dbgs() << "value-mapping (size = " << VM.Values.size() << "):\n";
- for (unsigned I = 0, E = VM.Values.size(); I != E; ++I) {
- dbgs() << " - id = " << I << ", value = ";
- VM.Values[I]->dump();
- }
-}
-
-static void debugValue(const ValueMapping &M, unsigned I, StringRef Desc) {
- const Value *V = M.Values[I];
- dbgs() << " - " << Desc << " value = ";
- V->dump();
- for (const Use &U : V->uses()) {
- dbgs() << " => use: op = " << U.getOperandNo()
- << ", user-id = " << M.IDs.lookup(U.getUser()) << ", user = ";
- U.getUser()->dump();
- }
-}
-
-static void debugUserMismatch(const ValueMapping &L, const ValueMapping &R,
- unsigned I) {
- dbgs() << " - fail: user mismatch: ID = " << I << "\n";
- debugValue(L, I, "LHS");
- debugValue(R, I, "RHS");
-
- dbgs() << "\nlhs-";
- dumpMapping(L);
- dbgs() << "\nrhs-";
- dumpMapping(R);
-}
-
-static void debugSizeMismatch(const ValueMapping &L, const ValueMapping &R) {
- dbgs() << " - fail: map size: " << L.Values.size()
- << " != " << R.Values.size() << "\n";
- dbgs() << "\nlhs-";
- dumpMapping(L);
- dbgs() << "\nrhs-";
- dumpMapping(R);
-}
-#endif
-
-static bool matches(const ValueMapping &LM, const ValueMapping &RM) {
- DEBUG(dbgs() << "compare value maps\n");
- if (LM.Values.size() != RM.Values.size()) {
- DEBUG(debugSizeMismatch(LM, RM));
- return false;
- }
-
- // This mapping doesn't include dangling constant users, since those don't
- // get serialized. However, checking if users are constant and calling
- // isConstantUsed() on every one is very expensive. Instead, just check if
- // the user is mapped.
- auto skipUnmappedUsers =
- [&](Value::const_use_iterator &U, Value::const_use_iterator E,
- const ValueMapping &M) {
- while (U != E && !M.lookup(U->getUser()))
- ++U;
- };
-
- // Iterate through all values, and check that both mappings have the same
- // users.
- for (unsigned I = 0, E = LM.Values.size(); I != E; ++I) {
- const Value *L = LM.Values[I];
- const Value *R = RM.Values[I];
- auto LU = L->use_begin(), LE = L->use_end();
- auto RU = R->use_begin(), RE = R->use_end();
- skipUnmappedUsers(LU, LE, LM);
- skipUnmappedUsers(RU, RE, RM);
-
- while (LU != LE) {
- if (RU == RE) {
- DEBUG(debugUserMismatch(LM, RM, I));
- return false;
- }
- if (LM.lookup(LU->getUser()) != RM.lookup(RU->getUser())) {
- DEBUG(debugUserMismatch(LM, RM, I));
- return false;
- }
- if (LU->getOperandNo() != RU->getOperandNo()) {
- DEBUG(debugUserMismatch(LM, RM, I));
- return false;
- }
- skipUnmappedUsers(++LU, LE, LM);
- skipUnmappedUsers(++RU, RE, RM);
- }
- if (RU != RE) {
- DEBUG(debugUserMismatch(LM, RM, I));
- return false;
- }
- }
-
- return true;
-}
-
-static bool verifyBitcodeUseListOrder(const Module &M) {
- DEBUG(dbgs() << "*** verify-use-list-order: bitcode ***\n");
- TempFile F;
- if (F.init("bc"))
- return false;
-
- if (F.writeBitcode(M))
- return false;
-
- LLVMContext Context;
- std::unique_ptr<Module> OtherM = F.readBitcode(Context);
- if (!OtherM)
- return false;
-
- return matches(ValueMapping(M), ValueMapping(*OtherM));
-}
-
-static bool verifyAssemblyUseListOrder(const Module &M) {
- DEBUG(dbgs() << "*** verify-use-list-order: assembly ***\n");
- TempFile F;
- if (F.init("ll"))
- return false;
-
- if (F.writeAssembly(M))
- return false;
-
- LLVMContext Context;
- std::unique_ptr<Module> OtherM = F.readAssembly(Context);
- if (!OtherM)
- return false;
-
- return matches(ValueMapping(M), ValueMapping(*OtherM));
-}
-
-namespace {
-class VerifyUseListOrder : public ModulePass {
-public:
- static char ID;
- VerifyUseListOrder();
- bool runOnModule(Module &M) override;
-};
-} // end anonymous namespace
-
-char VerifyUseListOrder::ID = 0;
-INITIALIZE_PASS(VerifyUseListOrder, "verify-use-list-order",
- "Verify Use List Order", false, false)
-VerifyUseListOrder::VerifyUseListOrder() : ModulePass(ID) {
- initializeVerifyUseListOrderPass(*PassRegistry::getPassRegistry());
-}
-
-bool VerifyUseListOrder::runOnModule(Module &M) {
- DEBUG(dbgs() << "*** verify-use-list-order ***\n");
- if (!shouldPreserveBitcodeUseListOrder()) {
- // Can't verify if order isn't preserved.
- DEBUG(dbgs() << "warning: cannot verify bitcode; "
- "try -preserve-bc-use-list-order\n");
- return false;
- }
-
- shuffleUseLists(M);
- if (!verifyBitcodeUseListOrder(M))
- report_fatal_error("bitcode use-list order changed");
-
- if (shouldPreserveBitcodeUseListOrder())
- if (!verifyAssemblyUseListOrder(M))
- report_fatal_error("assembly use-list order changed");
-
- return true;
-}
-
-ModulePass *llvm::createVerifyUseListOrderPass() {
- return new VerifyUseListOrder;
-}
-; RUN: opt -S < %s -preserve-bc-use-list-order -verify-use-list-order
+; RUN: llvm-uselistorder < %s -preserve-bc-use-list-order
; XFAIL: *
@a = global [4 x i1] [i1 0, i1 1, i1 0, i1 1]
llvm-rtdyld
llvm-symbolizer
llvm-tblgen
+ llvm-uselistorder
llvm-vtabledump
macho-dump
opt
r"\bllvm-rtdyld\b",
r"\bllvm-size\b",
r"\bllvm-tblgen\b",
+ r"\bllvm-uselistorder\b",
r"\bllvm-vtabledump\b",
r"\bllvm-c-test\b",
r"\bmacho-dump\b",
add_llvm_tool_subdirectory(llvm-stress)
add_llvm_tool_subdirectory(llvm-mcmarkup)
+add_llvm_tool_subdirectory(llvm-uselistorder)
+
add_llvm_tool_subdirectory(llvm-symbolizer)
add_llvm_tool_subdirectory(llvm-c-test)
--- /dev/null
+set(LLVM_LINK_COMPONENTS
+ Support
+ IRReader
+ BitWriter
+ )
+
+add_llvm_tool(llvm-uselistorder
+ llvm-uselistorder.cpp
+ )
--- /dev/null
+;===- ./tools/llvm-uselistorder/LLVMBuild.txt ------------------*- Conf -*--===;
+;
+; The LLVM Compiler Infrastructure
+;
+; This file is distributed under the University of Illinois Open Source
+; License. See LICENSE.TXT for details.
+;
+;===------------------------------------------------------------------------===;
+;
+; This is an LLVMBuild description file for the components in this subdirectory.
+;
+; For more information on the LLVMBuild system, please see:
+;
+; http://llvm.org/docs/LLVMBuild.html
+;
+;===------------------------------------------------------------------------===;
+
+[component_0]
+type = Tool
+name = llvm-uselistorder
+parent = Tools
+required_libraries = IRReader BitWriter Support
--- /dev/null
+##===- tools/llvm-uselistorder/Makefile --------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL := ../..
+TOOLNAME := llvm-uselistorder
+LINK_COMPONENTS := support irreader bitwriter
+
+# This tool has no plugins, optimize startup time.
+TOOL_NO_EXPORTS := 1
+
+include $(LEVEL)/Makefile.common
--- /dev/null
+//===- opt.cpp - The LLVM Modular Optimizer -------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Optimizations may be specified an arbitrary number of times on the command
+// line, They are run in the order specified.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/AsmParser/Parser.h"
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/UseListOrder.h"
+#include "llvm/IRReader/IRReader.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/SystemUtils.h"
+
+using namespace llvm;
+
+#define DEBUG_TYPE "use-list-order"
+
+static cl::opt<std::string> InputFilename(cl::Positional,
+ cl::desc("<input bitcode file>"),
+ cl::init("-"),
+ cl::value_desc("filename"));
+
+namespace {
+
+struct TempFile {
+ std::string Filename;
+ FileRemover Remover;
+ bool init(const std::string &Ext);
+ bool writeBitcode(const Module &M) const;
+ bool writeAssembly(const Module &M) const;
+ std::unique_ptr<Module> readBitcode(LLVMContext &Context) const;
+ std::unique_ptr<Module> readAssembly(LLVMContext &Context) const;
+};
+
+struct ValueMapping {
+ DenseMap<const Value *, unsigned> IDs;
+ std::vector<const Value *> Values;
+
+ /// \brief Construct a value mapping for module.
+ ///
+ /// Creates mapping from every value in \c M to an ID. This mapping includes
+ /// un-referencable values.
+ ///
+ /// Every \a Value that gets serialized in some way should be represented
+ /// here. The order needs to be deterministic, but it's unnecessary to match
+ /// the value-ids in the bitcode writer.
+ ///
+ /// All constants that are referenced by other values are included in the
+ /// mapping, but others -- which wouldn't be serialized -- are not.
+ ValueMapping(const Module &M);
+
+ /// \brief Map a value.
+ ///
+ /// Maps a value. If it's a constant, maps all of its operands first.
+ void map(const Value *V);
+ unsigned lookup(const Value *V) const { return IDs.lookup(V); }
+};
+
+} // end namespace
+
+bool TempFile::init(const std::string &Ext) {
+ SmallVector<char, 64> Vector;
+ DEBUG(dbgs() << " - create-temp-file\n");
+ if (auto EC = sys::fs::createTemporaryFile("use-list-order", Ext, Vector)) {
+ (void)EC;
+ DEBUG(dbgs() << "error: " << EC.message() << "\n");
+ return true;
+ }
+ assert(!Vector.empty());
+
+ Filename.assign(Vector.data(), Vector.data() + Vector.size());
+ Remover.setFile(Filename);
+ DEBUG(dbgs() << " - filename = " << Filename << "\n");
+ return false;
+}
+
+bool TempFile::writeBitcode(const Module &M) const {
+ DEBUG(dbgs() << " - write bitcode\n");
+ std::string ErrorInfo;
+ raw_fd_ostream OS(Filename.c_str(), ErrorInfo, sys::fs::F_None);
+ if (!ErrorInfo.empty()) {
+ DEBUG(dbgs() << "error: " << ErrorInfo << "\n");
+ return true;
+ }
+
+ WriteBitcodeToFile(&M, OS);
+ return false;
+}
+
+bool TempFile::writeAssembly(const Module &M) const {
+ DEBUG(dbgs() << " - write assembly\n");
+ std::string ErrorInfo;
+ raw_fd_ostream OS(Filename.c_str(), ErrorInfo, sys::fs::F_Text);
+ if (!ErrorInfo.empty()) {
+ DEBUG(dbgs() << "error: " << ErrorInfo << "\n");
+ return true;
+ }
+
+ OS << M;
+ return false;
+}
+
+std::unique_ptr<Module> TempFile::readBitcode(LLVMContext &Context) const {
+ DEBUG(dbgs() << " - read bitcode\n");
+ ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOr =
+ MemoryBuffer::getFile(Filename);
+ if (!BufferOr) {
+ DEBUG(dbgs() << "error: " << BufferOr.getError().message() << "\n");
+ return nullptr;
+ }
+
+ std::unique_ptr<MemoryBuffer> Buffer = std::move(BufferOr.get());
+ ErrorOr<Module *> ModuleOr = parseBitcodeFile(Buffer.release(), Context);
+ if (!ModuleOr) {
+ DEBUG(dbgs() << "error: " << ModuleOr.getError().message() << "\n");
+ return nullptr;
+ }
+ return std::unique_ptr<Module>(ModuleOr.get());
+}
+
+std::unique_ptr<Module> TempFile::readAssembly(LLVMContext &Context) const {
+ DEBUG(dbgs() << " - read assembly\n");
+ SMDiagnostic Err;
+ std::unique_ptr<Module> M(ParseAssemblyFile(Filename, Err, Context));
+ if (!M.get())
+ DEBUG(dbgs() << "error: "; Err.print("verify-use-list-order", dbgs()));
+ return M;
+}
+
+ValueMapping::ValueMapping(const Module &M) {
+ // Every value should be mapped, including things like void instructions and
+ // basic blocks that are kept out of the ValueEnumerator.
+ //
+ // The current mapping order makes it easier to debug the tables. It happens
+ // to be similar to the ID mapping when writing ValueEnumerator, but they
+ // aren't (and needn't be) in sync.
+
+ // Globals.
+ for (const GlobalVariable &G : M.globals())
+ map(&G);
+ for (const GlobalAlias &A : M.aliases())
+ map(&A);
+ for (const Function &F : M)
+ map(&F);
+
+ // Constants used by globals.
+ for (const GlobalVariable &G : M.globals())
+ if (G.hasInitializer())
+ map(G.getInitializer());
+ for (const GlobalAlias &A : M.aliases())
+ map(A.getAliasee());
+ for (const Function &F : M)
+ if (F.hasPrefixData())
+ map(F.getPrefixData());
+
+ // Function bodies.
+ for (const Function &F : M) {
+ for (const Argument &A : F.args())
+ map(&A);
+ for (const BasicBlock &BB : F)
+ map(&BB);
+ for (const BasicBlock &BB : F)
+ for (const Instruction &I : BB)
+ map(&I);
+
+ // Constants used by instructions.
+ for (const BasicBlock &BB : F)
+ for (const Instruction &I : BB)
+ for (const Value *Op : I.operands())
+ if ((isa<Constant>(Op) && !isa<GlobalValue>(*Op)) ||
+ isa<InlineAsm>(Op))
+ map(Op);
+ }
+}
+
+void ValueMapping::map(const Value *V) {
+ if (IDs.lookup(V))
+ return;
+
+ if (auto *C = dyn_cast<Constant>(V))
+ if (!isa<GlobalValue>(C))
+ for (const Value *Op : C->operands())
+ map(Op);
+
+ Values.push_back(V);
+ IDs[V] = Values.size();
+}
+
+#ifndef NDEBUG
+static void dumpMapping(const ValueMapping &VM) {
+ dbgs() << "value-mapping (size = " << VM.Values.size() << "):\n";
+ for (unsigned I = 0, E = VM.Values.size(); I != E; ++I) {
+ dbgs() << " - id = " << I << ", value = ";
+ VM.Values[I]->dump();
+ }
+}
+
+static void debugValue(const ValueMapping &M, unsigned I, StringRef Desc) {
+ const Value *V = M.Values[I];
+ dbgs() << " - " << Desc << " value = ";
+ V->dump();
+ for (const Use &U : V->uses()) {
+ dbgs() << " => use: op = " << U.getOperandNo()
+ << ", user-id = " << M.IDs.lookup(U.getUser()) << ", user = ";
+ U.getUser()->dump();
+ }
+}
+
+static void debugUserMismatch(const ValueMapping &L, const ValueMapping &R,
+ unsigned I) {
+ dbgs() << " - fail: user mismatch: ID = " << I << "\n";
+ debugValue(L, I, "LHS");
+ debugValue(R, I, "RHS");
+
+ dbgs() << "\nlhs-";
+ dumpMapping(L);
+ dbgs() << "\nrhs-";
+ dumpMapping(R);
+}
+
+static void debugSizeMismatch(const ValueMapping &L, const ValueMapping &R) {
+ dbgs() << " - fail: map size: " << L.Values.size()
+ << " != " << R.Values.size() << "\n";
+ dbgs() << "\nlhs-";
+ dumpMapping(L);
+ dbgs() << "\nrhs-";
+ dumpMapping(R);
+}
+#endif
+
+static bool matches(const ValueMapping &LM, const ValueMapping &RM) {
+ DEBUG(dbgs() << "compare value maps\n");
+ if (LM.Values.size() != RM.Values.size()) {
+ DEBUG(debugSizeMismatch(LM, RM));
+ return false;
+ }
+
+ // This mapping doesn't include dangling constant users, since those don't
+ // get serialized. However, checking if users are constant and calling
+ // isConstantUsed() on every one is very expensive. Instead, just check if
+ // the user is mapped.
+ auto skipUnmappedUsers =
+ [&](Value::const_use_iterator &U, Value::const_use_iterator E,
+ const ValueMapping &M) {
+ while (U != E && !M.lookup(U->getUser()))
+ ++U;
+ };
+
+ // Iterate through all values, and check that both mappings have the same
+ // users.
+ for (unsigned I = 0, E = LM.Values.size(); I != E; ++I) {
+ const Value *L = LM.Values[I];
+ const Value *R = RM.Values[I];
+ auto LU = L->use_begin(), LE = L->use_end();
+ auto RU = R->use_begin(), RE = R->use_end();
+ skipUnmappedUsers(LU, LE, LM);
+ skipUnmappedUsers(RU, RE, RM);
+
+ while (LU != LE) {
+ if (RU == RE) {
+ DEBUG(debugUserMismatch(LM, RM, I));
+ return false;
+ }
+ if (LM.lookup(LU->getUser()) != RM.lookup(RU->getUser())) {
+ DEBUG(debugUserMismatch(LM, RM, I));
+ return false;
+ }
+ if (LU->getOperandNo() != RU->getOperandNo()) {
+ DEBUG(debugUserMismatch(LM, RM, I));
+ return false;
+ }
+ skipUnmappedUsers(++LU, LE, LM);
+ skipUnmappedUsers(++RU, RE, RM);
+ }
+ if (RU != RE) {
+ DEBUG(debugUserMismatch(LM, RM, I));
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static bool verifyBitcodeUseListOrder(const Module &M) {
+ DEBUG(dbgs() << "*** verify-use-list-order: bitcode ***\n");
+ TempFile F;
+ if (F.init("bc"))
+ return false;
+
+ if (F.writeBitcode(M))
+ return false;
+
+ LLVMContext Context;
+ std::unique_ptr<Module> OtherM = F.readBitcode(Context);
+ if (!OtherM)
+ return false;
+
+ return matches(ValueMapping(M), ValueMapping(*OtherM));
+}
+
+static bool verifyAssemblyUseListOrder(const Module &M) {
+ DEBUG(dbgs() << "*** verify-use-list-order: assembly ***\n");
+ TempFile F;
+ if (F.init("ll"))
+ return false;
+
+ if (F.writeAssembly(M))
+ return false;
+
+ LLVMContext Context;
+ std::unique_ptr<Module> OtherM = F.readAssembly(Context);
+ if (!OtherM)
+ return false;
+
+ return matches(ValueMapping(M), ValueMapping(*OtherM));
+}
+
+int main(int argc, char **argv) {
+ sys::PrintStackTraceOnErrorSignal();
+ llvm::PrettyStackTraceProgram X(argc, argv);
+
+ // Enable debug stream buffering.
+ EnableDebugBuffering = true;
+
+ llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+ LLVMContext &Context = getGlobalContext();
+
+ cl::ParseCommandLineOptions(argc, argv,
+ "llvm tool to verify use-list order\n");
+
+ SMDiagnostic Err;
+
+ // Load the input module...
+ std::unique_ptr<Module> M;
+ M.reset(ParseIRFile(InputFilename, Err, Context));
+
+ if (!M.get()) {
+ Err.print(argv[0], errs());
+ return 1;
+ }
+
+ DEBUG(dbgs() << "*** verify-use-list-order ***\n");
+ if (!shouldPreserveBitcodeUseListOrder()) {
+ // Can't verify if order isn't preserved.
+ DEBUG(dbgs() << "warning: cannot verify bitcode; "
+ "try -preserve-bc-use-list-order\n");
+ return 0;
+ }
+
+ shuffleUseLists(*M);
+ if (!verifyBitcodeUseListOrder(*M))
+ report_fatal_error("bitcode use-list order changed");
+
+ if (shouldPreserveBitcodeUseListOrder())
+ if (!verifyAssemblyUseListOrder(*M))
+ report_fatal_error("assembly use-list order changed");
+
+ return 0;
+}
projects / oota-llvm.git / commitdiff