1 //===-- Verifier.cpp - Implement the Module Verifier -----------------------==//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the function verifier interface, that can be used for some
11 // sanity checking of input to the system.
13 // Note that this does not provide full `Java style' security and verifications,
14 // instead it just tries to ensure that code is well-formed.
16 // * Both of a binary operator's parameters are of the same type
17 // * Verify that the indices of mem access instructions match other operands
18 // * Verify that arithmetic and other things are only performed on first-class
19 // types. Verify that shifts & logicals only happen on integrals f.e.
20 // * All of the constants in a switch statement are of the correct type
21 // * The code is in valid SSA form
22 // * It should be illegal to put a label into any other type (like a structure)
23 // or to return one. [except constant arrays!]
24 // * Only phi nodes can be self referential: 'add i32 %0, %0 ; <int>:0' is bad
25 // * PHI nodes must have an entry for each predecessor, with no extras.
26 // * PHI nodes must be the first thing in a basic block, all grouped together
27 // * PHI nodes must have at least one entry
28 // * All basic blocks should only end with terminator insts, not contain them
29 // * The entry node to a function must not have predecessors
30 // * All Instructions must be embedded into a basic block
31 // * Functions cannot take a void-typed parameter
32 // * Verify that a function's argument list agrees with it's declared type.
33 // * It is illegal to specify a name for a void value.
34 // * It is illegal to have a internal global value with no initializer
35 // * It is illegal to have a ret instruction that returns a value that does not
36 // agree with the function return value type.
37 // * Function call argument types match the function prototype
38 // * A landing pad is defined by a landingpad instruction, and can be jumped to
39 // only by the unwind edge of an invoke instruction.
40 // * A landingpad instruction must be the first non-PHI instruction in the
42 // * All landingpad instructions must use the same personality function with
44 // * All other things that are tested by asserts spread about the code...
46 //===----------------------------------------------------------------------===//
48 #include "llvm/Analysis/Verifier.h"
49 #include "llvm/ADT/STLExtras.h"
50 #include "llvm/ADT/SetVector.h"
51 #include "llvm/ADT/SmallPtrSet.h"
52 #include "llvm/ADT/SmallVector.h"
53 #include "llvm/ADT/StringExtras.h"
54 #include "llvm/Analysis/Dominators.h"
55 #include "llvm/Assembly/Writer.h"
56 #include "llvm/DebugInfo.h"
57 #include "llvm/IR/CallingConv.h"
58 #include "llvm/IR/Constants.h"
59 #include "llvm/IR/DataLayout.h"
60 #include "llvm/IR/DerivedTypes.h"
61 #include "llvm/IR/InlineAsm.h"
62 #include "llvm/IR/IntrinsicInst.h"
63 #include "llvm/IR/LLVMContext.h"
64 #include "llvm/IR/Metadata.h"
65 #include "llvm/IR/Module.h"
66 #include "llvm/InstVisitor.h"
67 #include "llvm/Pass.h"
68 #include "llvm/PassManager.h"
69 #include "llvm/Support/CFG.h"
70 #include "llvm/Support/CallSite.h"
71 #include "llvm/Support/CommandLine.h"
72 #include "llvm/Support/ConstantRange.h"
73 #include "llvm/Support/Debug.h"
74 #include "llvm/Support/ErrorHandling.h"
75 #include "llvm/Support/raw_ostream.h"
80 static cl::opt<bool> DisableDebugInfoVerifier("disable-debug-info-verifier",
83 namespace { // Anonymous namespace for class
84 struct PreVerifier : public FunctionPass {
85 static char ID; // Pass ID, replacement for typeid
87 PreVerifier() : FunctionPass(ID) {
88 initializePreVerifierPass(*PassRegistry::getPassRegistry());
91 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
95 // Check that the prerequisites for successful DominatorTree construction
97 bool runOnFunction(Function &F) {
100 for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I) {
101 if (I->empty() || !I->back().isTerminator()) {
102 dbgs() << "Basic Block in function '" << F.getName()
103 << "' does not have terminator!\n";
104 WriteAsOperand(dbgs(), I, true);
111 report_fatal_error("Broken module, no Basic Block terminator!");
118 char PreVerifier::ID = 0;
119 INITIALIZE_PASS(PreVerifier, "preverify", "Preliminary module verification",
121 static char &PreVerifyID = PreVerifier::ID;
124 struct Verifier : public FunctionPass, public InstVisitor<Verifier> {
125 static char ID; // Pass ID, replacement for typeid
126 bool Broken; // Is this module found to be broken?
127 VerifierFailureAction action;
128 // What to do if verification fails.
129 Module *Mod; // Module we are verifying right now
130 LLVMContext *Context; // Context within which we are verifying
131 DominatorTree *DT; // Dominator Tree, caution can be null!
132 const DataLayout *DL;
134 std::string Messages;
135 raw_string_ostream MessagesStr;
137 /// InstInThisBlock - when verifying a basic block, keep track of all of the
138 /// instructions we have seen so far. This allows us to do efficient
139 /// dominance checks for the case when an instruction has an operand that is
140 /// an instruction in the same block.
141 SmallPtrSet<Instruction*, 16> InstsInThisBlock;
143 /// MDNodes - keep track of the metadata nodes that have been checked
145 SmallPtrSet<MDNode *, 32> MDNodes;
147 /// PersonalityFn - The personality function referenced by the
148 /// LandingPadInsts. All LandingPadInsts within the same function must use
149 /// the same personality function.
150 const Value *PersonalityFn;
152 /// Finder keeps track of all debug info MDNodes in a Module.
153 DebugInfoFinder Finder;
156 : FunctionPass(ID), Broken(false),
157 action(AbortProcessAction), Mod(0), Context(0), DT(0), DL(0),
158 MessagesStr(Messages), PersonalityFn(0) {
159 initializeVerifierPass(*PassRegistry::getPassRegistry());
161 explicit Verifier(VerifierFailureAction ctn)
162 : FunctionPass(ID), Broken(false), action(ctn), Mod(0),
163 Context(0), DT(0), DL(0), MessagesStr(Messages), PersonalityFn(0) {
164 initializeVerifierPass(*PassRegistry::getPassRegistry());
167 bool doInitialization(Module &M) {
169 Context = &M.getContext();
172 DL = getAnalysisIfAvailable<DataLayout>();
174 // We must abort before returning back to the pass manager, or else the
175 // pass manager may try to run other passes on the broken module.
176 return abortIfBroken();
179 bool runOnFunction(Function &F) {
180 // Get dominator information if we are being run by PassManager
181 DT = &getAnalysis<DominatorTree>();
184 if (!Context) Context = &F.getContext();
187 InstsInThisBlock.clear();
190 // We must abort before returning back to the pass manager, or else the
191 // pass manager may try to run other passes on the broken module.
192 return abortIfBroken();
195 bool doFinalization(Module &M) {
196 // Scan through, checking all of the external function's linkage now...
197 for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I) {
198 visitGlobalValue(*I);
200 // Check to make sure function prototypes are okay.
201 if (I->isDeclaration()) visitFunction(*I);
204 for (Module::global_iterator I = M.global_begin(), E = M.global_end();
206 visitGlobalVariable(*I);
208 for (Module::alias_iterator I = M.alias_begin(), E = M.alias_end();
210 visitGlobalAlias(*I);
212 for (Module::named_metadata_iterator I = M.named_metadata_begin(),
213 E = M.named_metadata_end(); I != E; ++I)
214 visitNamedMDNode(*I);
218 // Verify Debug Info.
221 // If the module is broken, abort at this time.
222 return abortIfBroken();
225 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
226 AU.setPreservesAll();
227 AU.addRequiredID(PreVerifyID);
228 AU.addRequired<DominatorTree>();
231 /// abortIfBroken - If the module is broken and we are supposed to abort on
232 /// this condition, do so.
234 bool abortIfBroken() {
235 if (!Broken) return false;
236 MessagesStr << "Broken module found, ";
238 case AbortProcessAction:
239 MessagesStr << "compilation aborted!\n";
240 dbgs() << MessagesStr.str();
241 // Client should choose different reaction if abort is not desired
243 case PrintMessageAction:
244 MessagesStr << "verification continues.\n";
245 dbgs() << MessagesStr.str();
247 case ReturnStatusAction:
248 MessagesStr << "compilation terminated.\n";
251 llvm_unreachable("Invalid action");
255 // Verification methods...
256 void visitGlobalValue(GlobalValue &GV);
257 void visitGlobalVariable(GlobalVariable &GV);
258 void visitGlobalAlias(GlobalAlias &GA);
259 void visitNamedMDNode(NamedMDNode &NMD);
260 void visitMDNode(MDNode &MD, Function *F);
261 void visitModuleFlags(Module &M);
262 void visitModuleFlag(MDNode *Op, DenseMap<MDString*, MDNode*> &SeenIDs,
263 SmallVectorImpl<MDNode*> &Requirements);
264 void visitFunction(Function &F);
265 void visitBasicBlock(BasicBlock &BB);
266 using InstVisitor<Verifier>::visit;
268 void visit(Instruction &I);
270 void visitTruncInst(TruncInst &I);
271 void visitZExtInst(ZExtInst &I);
272 void visitSExtInst(SExtInst &I);
273 void visitFPTruncInst(FPTruncInst &I);
274 void visitFPExtInst(FPExtInst &I);
275 void visitFPToUIInst(FPToUIInst &I);
276 void visitFPToSIInst(FPToSIInst &I);
277 void visitUIToFPInst(UIToFPInst &I);
278 void visitSIToFPInst(SIToFPInst &I);
279 void visitIntToPtrInst(IntToPtrInst &I);
280 void visitPtrToIntInst(PtrToIntInst &I);
281 void visitBitCastInst(BitCastInst &I);
282 void visitPHINode(PHINode &PN);
283 void visitBinaryOperator(BinaryOperator &B);
284 void visitICmpInst(ICmpInst &IC);
285 void visitFCmpInst(FCmpInst &FC);
286 void visitExtractElementInst(ExtractElementInst &EI);
287 void visitInsertElementInst(InsertElementInst &EI);
288 void visitShuffleVectorInst(ShuffleVectorInst &EI);
289 void visitVAArgInst(VAArgInst &VAA) { visitInstruction(VAA); }
290 void visitCallInst(CallInst &CI);
291 void visitInvokeInst(InvokeInst &II);
292 void visitGetElementPtrInst(GetElementPtrInst &GEP);
293 void visitLoadInst(LoadInst &LI);
294 void visitStoreInst(StoreInst &SI);
295 void verifyDominatesUse(Instruction &I, unsigned i);
296 void visitInstruction(Instruction &I);
297 void visitTerminatorInst(TerminatorInst &I);
298 void visitBranchInst(BranchInst &BI);
299 void visitReturnInst(ReturnInst &RI);
300 void visitSwitchInst(SwitchInst &SI);
301 void visitIndirectBrInst(IndirectBrInst &BI);
302 void visitSelectInst(SelectInst &SI);
303 void visitUserOp1(Instruction &I);
304 void visitUserOp2(Instruction &I) { visitUserOp1(I); }
305 void visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI);
306 void visitAtomicCmpXchgInst(AtomicCmpXchgInst &CXI);
307 void visitAtomicRMWInst(AtomicRMWInst &RMWI);
308 void visitFenceInst(FenceInst &FI);
309 void visitAllocaInst(AllocaInst &AI);
310 void visitExtractValueInst(ExtractValueInst &EVI);
311 void visitInsertValueInst(InsertValueInst &IVI);
312 void visitLandingPadInst(LandingPadInst &LPI);
314 void VerifyCallSite(CallSite CS);
315 bool PerformTypeCheck(Intrinsic::ID ID, Function *F, Type *Ty,
316 int VT, unsigned ArgNo, std::string &Suffix);
317 bool VerifyIntrinsicType(Type *Ty,
318 ArrayRef<Intrinsic::IITDescriptor> &Infos,
319 SmallVectorImpl<Type*> &ArgTys);
320 bool VerifyAttributeCount(AttributeSet Attrs, unsigned Params);
321 void VerifyAttributeTypes(AttributeSet Attrs, unsigned Idx,
322 bool isFunction, const Value *V);
323 void VerifyParameterAttrs(AttributeSet Attrs, unsigned Idx, Type *Ty,
324 bool isReturnValue, const Value *V);
325 void VerifyFunctionAttrs(FunctionType *FT, AttributeSet Attrs,
328 void VerifyBitcastType(const Value *V, Type *DestTy, Type *SrcTy);
329 void VerifyConstantExprBitcastType(const ConstantExpr *CE);
331 void verifyDebugInfo(Module &M);
333 void WriteValue(const Value *V) {
335 if (isa<Instruction>(V)) {
336 MessagesStr << *V << '\n';
338 WriteAsOperand(MessagesStr, V, true, Mod);
343 void WriteType(Type *T) {
345 MessagesStr << ' ' << *T;
349 // CheckFailed - A check failed, so print out the condition and the message
350 // that failed. This provides a nice place to put a breakpoint if you want
351 // to see why something is not correct.
352 void CheckFailed(const Twine &Message,
353 const Value *V1 = 0, const Value *V2 = 0,
354 const Value *V3 = 0, const Value *V4 = 0) {
355 MessagesStr << Message.str() << "\n";
363 void CheckFailed(const Twine &Message, const Value *V1,
364 Type *T2, const Value *V3 = 0) {
365 MessagesStr << Message.str() << "\n";
372 void CheckFailed(const Twine &Message, Type *T1,
373 Type *T2 = 0, Type *T3 = 0) {
374 MessagesStr << Message.str() << "\n";
381 } // End anonymous namespace
383 char Verifier::ID = 0;
384 INITIALIZE_PASS_BEGIN(Verifier, "verify", "Module Verifier", false, false)
385 INITIALIZE_PASS_DEPENDENCY(PreVerifier)
386 INITIALIZE_PASS_DEPENDENCY(DominatorTree)
387 INITIALIZE_PASS_END(Verifier, "verify", "Module Verifier", false, false)
389 // Assert - We know that cond should be true, if not print an error message.
390 #define Assert(C, M) \
391 do { if (!(C)) { CheckFailed(M); return; } } while (0)
392 #define Assert1(C, M, V1) \
393 do { if (!(C)) { CheckFailed(M, V1); return; } } while (0)
394 #define Assert2(C, M, V1, V2) \
395 do { if (!(C)) { CheckFailed(M, V1, V2); return; } } while (0)
396 #define Assert3(C, M, V1, V2, V3) \
397 do { if (!(C)) { CheckFailed(M, V1, V2, V3); return; } } while (0)
398 #define Assert4(C, M, V1, V2, V3, V4) \
399 do { if (!(C)) { CheckFailed(M, V1, V2, V3, V4); return; } } while (0)
401 void Verifier::visit(Instruction &I) {
402 for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i)
403 Assert1(I.getOperand(i) != 0, "Operand is null", &I);
404 InstVisitor<Verifier>::visit(I);
408 void Verifier::visitGlobalValue(GlobalValue &GV) {
409 Assert1(!GV.isDeclaration() ||
410 GV.isMaterializable() ||
411 GV.hasExternalLinkage() ||
412 GV.hasDLLImportLinkage() ||
413 GV.hasExternalWeakLinkage() ||
414 (isa<GlobalAlias>(GV) &&
415 (GV.hasLocalLinkage() || GV.hasWeakLinkage())),
416 "Global is external, but doesn't have external or dllimport or weak linkage!",
419 Assert1(!GV.hasDLLImportLinkage() || GV.isDeclaration(),
420 "Global is marked as dllimport, but not external", &GV);
422 Assert1(!GV.hasAppendingLinkage() || isa<GlobalVariable>(GV),
423 "Only global variables can have appending linkage!", &GV);
425 if (GV.hasAppendingLinkage()) {
426 GlobalVariable *GVar = dyn_cast<GlobalVariable>(&GV);
427 Assert1(GVar && GVar->getType()->getElementType()->isArrayTy(),
428 "Only global arrays can have appending linkage!", GVar);
431 Assert1(!GV.hasLinkOnceODRAutoHideLinkage() || GV.hasDefaultVisibility(),
432 "linkonce_odr_auto_hide can only have default visibility!",
436 void Verifier::visitGlobalVariable(GlobalVariable &GV) {
437 if (GV.hasInitializer()) {
438 Assert1(GV.getInitializer()->getType() == GV.getType()->getElementType(),
439 "Global variable initializer type does not match global "
440 "variable type!", &GV);
442 // If the global has common linkage, it must have a zero initializer and
443 // cannot be constant.
444 if (GV.hasCommonLinkage()) {
445 Assert1(GV.getInitializer()->isNullValue(),
446 "'common' global must have a zero initializer!", &GV);
447 Assert1(!GV.isConstant(), "'common' global may not be marked constant!",
451 Assert1(GV.hasExternalLinkage() || GV.hasDLLImportLinkage() ||
452 GV.hasExternalWeakLinkage(),
453 "invalid linkage type for global declaration", &GV);
456 if (GV.hasName() && (GV.getName() == "llvm.global_ctors" ||
457 GV.getName() == "llvm.global_dtors")) {
458 Assert1(!GV.hasInitializer() || GV.hasAppendingLinkage(),
459 "invalid linkage for intrinsic global variable", &GV);
460 // Don't worry about emitting an error for it not being an array,
461 // visitGlobalValue will complain on appending non-array.
462 if (ArrayType *ATy = dyn_cast<ArrayType>(GV.getType())) {
463 StructType *STy = dyn_cast<StructType>(ATy->getElementType());
464 PointerType *FuncPtrTy =
465 FunctionType::get(Type::getVoidTy(*Context), false)->getPointerTo();
466 Assert1(STy && STy->getNumElements() == 2 &&
467 STy->getTypeAtIndex(0u)->isIntegerTy(32) &&
468 STy->getTypeAtIndex(1) == FuncPtrTy,
469 "wrong type for intrinsic global variable", &GV);
473 if (GV.hasName() && (GV.getName() == "llvm.used" ||
474 GV.getName() == "llvm.compiler.used")) {
475 Assert1(!GV.hasInitializer() || GV.hasAppendingLinkage(),
476 "invalid linkage for intrinsic global variable", &GV);
477 Type *GVType = GV.getType()->getElementType();
478 if (ArrayType *ATy = dyn_cast<ArrayType>(GVType)) {
479 PointerType *PTy = dyn_cast<PointerType>(ATy->getElementType());
480 Assert1(PTy, "wrong type for intrinsic global variable", &GV);
481 if (GV.hasInitializer()) {
482 Constant *Init = GV.getInitializer();
483 ConstantArray *InitArray = dyn_cast<ConstantArray>(Init);
484 Assert1(InitArray, "wrong initalizer for intrinsic global variable",
486 for (unsigned i = 0, e = InitArray->getNumOperands(); i != e; ++i) {
487 Value *V = Init->getOperand(i)->stripPointerCastsNoFollowAliases();
489 isa<GlobalVariable>(V) || isa<Function>(V) || isa<GlobalAlias>(V),
490 "invalid llvm.used member", V);
491 Assert1(V->hasName(), "members of llvm.used must be named", V);
497 if (!GV.hasInitializer()) {
498 visitGlobalValue(GV);
502 // Walk any aggregate initializers looking for bitcasts between address spaces
503 SmallPtrSet<const Value *, 4> Visited;
504 SmallVector<const Value *, 4> WorkStack;
505 WorkStack.push_back(cast<Value>(GV.getInitializer()));
507 while (!WorkStack.empty()) {
508 const Value *V = WorkStack.pop_back_val();
509 if (!Visited.insert(V))
512 if (const User *U = dyn_cast<User>(V)) {
513 for (unsigned I = 0, N = U->getNumOperands(); I != N; ++I)
514 WorkStack.push_back(U->getOperand(I));
517 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
518 VerifyConstantExprBitcastType(CE);
524 visitGlobalValue(GV);
527 void Verifier::visitGlobalAlias(GlobalAlias &GA) {
528 Assert1(!GA.getName().empty(),
529 "Alias name cannot be empty!", &GA);
530 Assert1(GA.hasExternalLinkage() || GA.hasLocalLinkage() ||
532 "Alias should have external or external weak linkage!", &GA);
533 Assert1(GA.getAliasee(),
534 "Aliasee cannot be NULL!", &GA);
535 Assert1(GA.getType() == GA.getAliasee()->getType(),
536 "Alias and aliasee types should match!", &GA);
537 Assert1(!GA.hasUnnamedAddr(), "Alias cannot have unnamed_addr!", &GA);
539 Constant *Aliasee = GA.getAliasee();
541 if (!isa<GlobalValue>(Aliasee)) {
542 ConstantExpr *CE = dyn_cast<ConstantExpr>(Aliasee);
544 (CE->getOpcode() == Instruction::BitCast ||
545 CE->getOpcode() == Instruction::GetElementPtr) &&
546 isa<GlobalValue>(CE->getOperand(0)),
547 "Aliasee should be either GlobalValue or bitcast of GlobalValue",
550 if (CE->getOpcode() == Instruction::BitCast) {
551 unsigned SrcAS = CE->getOperand(0)->getType()->getPointerAddressSpace();
552 unsigned DstAS = CE->getType()->getPointerAddressSpace();
554 Assert1(SrcAS == DstAS,
555 "Alias bitcasts cannot be between different address spaces",
560 const GlobalValue* Resolved = GA.resolveAliasedGlobal(/*stopOnWeak*/ false);
562 "Aliasing chain should end with function or global variable", &GA);
564 visitGlobalValue(GA);
567 void Verifier::visitNamedMDNode(NamedMDNode &NMD) {
568 for (unsigned i = 0, e = NMD.getNumOperands(); i != e; ++i) {
569 MDNode *MD = NMD.getOperand(i);
573 Assert1(!MD->isFunctionLocal(),
574 "Named metadata operand cannot be function local!", MD);
579 void Verifier::visitMDNode(MDNode &MD, Function *F) {
580 // Only visit each node once. Metadata can be mutually recursive, so this
581 // avoids infinite recursion here, as well as being an optimization.
582 if (!MDNodes.insert(&MD))
585 for (unsigned i = 0, e = MD.getNumOperands(); i != e; ++i) {
586 Value *Op = MD.getOperand(i);
589 if (isa<Constant>(Op) || isa<MDString>(Op))
591 if (MDNode *N = dyn_cast<MDNode>(Op)) {
592 Assert2(MD.isFunctionLocal() || !N->isFunctionLocal(),
593 "Global metadata operand cannot be function local!", &MD, N);
597 Assert2(MD.isFunctionLocal(), "Invalid operand for global metadata!", &MD, Op);
599 // If this was an instruction, bb, or argument, verify that it is in the
600 // function that we expect.
601 Function *ActualF = 0;
602 if (Instruction *I = dyn_cast<Instruction>(Op))
603 ActualF = I->getParent()->getParent();
604 else if (BasicBlock *BB = dyn_cast<BasicBlock>(Op))
605 ActualF = BB->getParent();
606 else if (Argument *A = dyn_cast<Argument>(Op))
607 ActualF = A->getParent();
608 assert(ActualF && "Unimplemented function local metadata case!");
610 Assert2(ActualF == F, "function-local metadata used in wrong function",
615 void Verifier::visitModuleFlags(Module &M) {
616 const NamedMDNode *Flags = M.getModuleFlagsMetadata();
619 // Scan each flag, and track the flags and requirements.
620 DenseMap<MDString*, MDNode*> SeenIDs;
621 SmallVector<MDNode*, 16> Requirements;
622 for (unsigned I = 0, E = Flags->getNumOperands(); I != E; ++I) {
623 visitModuleFlag(Flags->getOperand(I), SeenIDs, Requirements);
626 // Validate that the requirements in the module are valid.
627 for (unsigned I = 0, E = Requirements.size(); I != E; ++I) {
628 MDNode *Requirement = Requirements[I];
629 MDString *Flag = cast<MDString>(Requirement->getOperand(0));
630 Value *ReqValue = Requirement->getOperand(1);
632 MDNode *Op = SeenIDs.lookup(Flag);
634 CheckFailed("invalid requirement on flag, flag is not present in module",
639 if (Op->getOperand(2) != ReqValue) {
640 CheckFailed(("invalid requirement on flag, "
641 "flag does not have the required value"),
648 void Verifier::visitModuleFlag(MDNode *Op, DenseMap<MDString*, MDNode*>&SeenIDs,
649 SmallVectorImpl<MDNode*> &Requirements) {
650 // Each module flag should have three arguments, the merge behavior (a
651 // constant int), the flag ID (an MDString), and the value.
652 Assert1(Op->getNumOperands() == 3,
653 "incorrect number of operands in module flag", Op);
654 ConstantInt *Behavior = dyn_cast<ConstantInt>(Op->getOperand(0));
655 MDString *ID = dyn_cast<MDString>(Op->getOperand(1));
657 "invalid behavior operand in module flag (expected constant integer)",
659 unsigned BehaviorValue = Behavior->getZExtValue();
661 "invalid ID operand in module flag (expected metadata string)",
664 // Sanity check the values for behaviors with additional requirements.
665 switch (BehaviorValue) {
668 "invalid behavior operand in module flag (unexpected constant)",
673 case Module::Warning:
674 case Module::Override:
675 // These behavior types accept any value.
678 case Module::Require: {
679 // The value should itself be an MDNode with two operands, a flag ID (an
680 // MDString), and a value.
681 MDNode *Value = dyn_cast<MDNode>(Op->getOperand(2));
682 Assert1(Value && Value->getNumOperands() == 2,
683 "invalid value for 'require' module flag (expected metadata pair)",
685 Assert1(isa<MDString>(Value->getOperand(0)),
686 ("invalid value for 'require' module flag "
687 "(first value operand should be a string)"),
688 Value->getOperand(0));
690 // Append it to the list of requirements, to check once all module flags are
692 Requirements.push_back(Value);
697 case Module::AppendUnique: {
698 // These behavior types require the operand be an MDNode.
699 Assert1(isa<MDNode>(Op->getOperand(2)),
700 "invalid value for 'append'-type module flag "
701 "(expected a metadata node)", Op->getOperand(2));
706 // Unless this is a "requires" flag, check the ID is unique.
707 if (BehaviorValue != Module::Require) {
708 bool Inserted = SeenIDs.insert(std::make_pair(ID, Op)).second;
710 "module flag identifiers must be unique (or of 'require' type)",
715 void Verifier::VerifyAttributeTypes(AttributeSet Attrs, unsigned Idx,
716 bool isFunction, const Value *V) {
718 for (unsigned I = 0, E = Attrs.getNumSlots(); I != E; ++I)
719 if (Attrs.getSlotIndex(I) == Idx) {
724 assert(Slot != ~0U && "Attribute set inconsistency!");
726 for (AttributeSet::iterator I = Attrs.begin(Slot), E = Attrs.end(Slot);
728 if (I->isStringAttribute())
731 if (I->getKindAsEnum() == Attribute::NoReturn ||
732 I->getKindAsEnum() == Attribute::NoUnwind ||
733 I->getKindAsEnum() == Attribute::NoInline ||
734 I->getKindAsEnum() == Attribute::AlwaysInline ||
735 I->getKindAsEnum() == Attribute::OptimizeForSize ||
736 I->getKindAsEnum() == Attribute::StackProtect ||
737 I->getKindAsEnum() == Attribute::StackProtectReq ||
738 I->getKindAsEnum() == Attribute::StackProtectStrong ||
739 I->getKindAsEnum() == Attribute::NoRedZone ||
740 I->getKindAsEnum() == Attribute::NoImplicitFloat ||
741 I->getKindAsEnum() == Attribute::Naked ||
742 I->getKindAsEnum() == Attribute::InlineHint ||
743 I->getKindAsEnum() == Attribute::StackAlignment ||
744 I->getKindAsEnum() == Attribute::UWTable ||
745 I->getKindAsEnum() == Attribute::NonLazyBind ||
746 I->getKindAsEnum() == Attribute::ReturnsTwice ||
747 I->getKindAsEnum() == Attribute::SanitizeAddress ||
748 I->getKindAsEnum() == Attribute::SanitizeThread ||
749 I->getKindAsEnum() == Attribute::SanitizeMemory ||
750 I->getKindAsEnum() == Attribute::MinSize ||
751 I->getKindAsEnum() == Attribute::NoDuplicate ||
752 I->getKindAsEnum() == Attribute::Builtin ||
753 I->getKindAsEnum() == Attribute::NoBuiltin ||
754 I->getKindAsEnum() == Attribute::Cold) {
756 CheckFailed("Attribute '" + I->getAsString() +
757 "' only applies to functions!", V);
760 } else if (I->getKindAsEnum() == Attribute::ReadOnly ||
761 I->getKindAsEnum() == Attribute::ReadNone) {
763 CheckFailed("Attribute '" + I->getAsString() +
764 "' does not apply to function returns");
767 } else if (isFunction) {
768 CheckFailed("Attribute '" + I->getAsString() +
769 "' does not apply to functions!", V);
775 // VerifyParameterAttrs - Check the given attributes for an argument or return
776 // value of the specified type. The value V is printed in error messages.
777 void Verifier::VerifyParameterAttrs(AttributeSet Attrs, unsigned Idx, Type *Ty,
778 bool isReturnValue, const Value *V) {
779 if (!Attrs.hasAttributes(Idx))
782 VerifyAttributeTypes(Attrs, Idx, false, V);
785 Assert1(!Attrs.hasAttribute(Idx, Attribute::ByVal) &&
786 !Attrs.hasAttribute(Idx, Attribute::Nest) &&
787 !Attrs.hasAttribute(Idx, Attribute::StructRet) &&
788 !Attrs.hasAttribute(Idx, Attribute::NoCapture) &&
789 !Attrs.hasAttribute(Idx, Attribute::Returned),
790 "Attribute 'byval', 'nest', 'sret', 'nocapture', and 'returned' "
791 "do not apply to return values!", V);
793 // Check for mutually incompatible attributes.
794 Assert1(!((Attrs.hasAttribute(Idx, Attribute::ByVal) &&
795 Attrs.hasAttribute(Idx, Attribute::Nest)) ||
796 (Attrs.hasAttribute(Idx, Attribute::ByVal) &&
797 Attrs.hasAttribute(Idx, Attribute::StructRet)) ||
798 (Attrs.hasAttribute(Idx, Attribute::Nest) &&
799 Attrs.hasAttribute(Idx, Attribute::StructRet))), "Attributes "
800 "'byval, nest, and sret' are incompatible!", V);
802 Assert1(!((Attrs.hasAttribute(Idx, Attribute::ByVal) &&
803 Attrs.hasAttribute(Idx, Attribute::Nest)) ||
804 (Attrs.hasAttribute(Idx, Attribute::ByVal) &&
805 Attrs.hasAttribute(Idx, Attribute::InReg)) ||
806 (Attrs.hasAttribute(Idx, Attribute::Nest) &&
807 Attrs.hasAttribute(Idx, Attribute::InReg))), "Attributes "
808 "'byval, nest, and inreg' are incompatible!", V);
810 Assert1(!(Attrs.hasAttribute(Idx, Attribute::StructRet) &&
811 Attrs.hasAttribute(Idx, Attribute::Returned)), "Attributes "
812 "'sret and returned' are incompatible!", V);
814 Assert1(!(Attrs.hasAttribute(Idx, Attribute::ZExt) &&
815 Attrs.hasAttribute(Idx, Attribute::SExt)), "Attributes "
816 "'zeroext and signext' are incompatible!", V);
818 Assert1(!(Attrs.hasAttribute(Idx, Attribute::ReadNone) &&
819 Attrs.hasAttribute(Idx, Attribute::ReadOnly)), "Attributes "
820 "'readnone and readonly' are incompatible!", V);
822 Assert1(!(Attrs.hasAttribute(Idx, Attribute::NoInline) &&
823 Attrs.hasAttribute(Idx, Attribute::AlwaysInline)), "Attributes "
824 "'noinline and alwaysinline' are incompatible!", V);
826 Assert1(!AttrBuilder(Attrs, Idx).
827 hasAttributes(AttributeFuncs::typeIncompatible(Ty, Idx), Idx),
828 "Wrong types for attribute: " +
829 AttributeFuncs::typeIncompatible(Ty, Idx).getAsString(Idx), V);
831 if (PointerType *PTy = dyn_cast<PointerType>(Ty))
832 Assert1(!Attrs.hasAttribute(Idx, Attribute::ByVal) ||
833 PTy->getElementType()->isSized(),
834 "Attribute 'byval' does not support unsized types!", V);
836 Assert1(!Attrs.hasAttribute(Idx, Attribute::ByVal),
837 "Attribute 'byval' only applies to parameters with pointer type!",
841 // VerifyFunctionAttrs - Check parameter attributes against a function type.
842 // The value V is printed in error messages.
843 void Verifier::VerifyFunctionAttrs(FunctionType *FT, AttributeSet Attrs,
848 bool SawNest = false;
849 bool SawReturned = false;
851 for (unsigned i = 0, e = Attrs.getNumSlots(); i != e; ++i) {
852 unsigned Idx = Attrs.getSlotIndex(i);
856 Ty = FT->getReturnType();
857 else if (Idx-1 < FT->getNumParams())
858 Ty = FT->getParamType(Idx-1);
860 break; // VarArgs attributes, verified elsewhere.
862 VerifyParameterAttrs(Attrs, Idx, Ty, Idx == 0, V);
867 if (Attrs.hasAttribute(Idx, Attribute::Nest)) {
868 Assert1(!SawNest, "More than one parameter has attribute nest!", V);
872 if (Attrs.hasAttribute(Idx, Attribute::Returned)) {
873 Assert1(!SawReturned, "More than one parameter has attribute returned!",
875 Assert1(Ty->canLosslesslyBitCastTo(FT->getReturnType()), "Incompatible "
876 "argument and return types for 'returned' attribute", V);
880 if (Attrs.hasAttribute(Idx, Attribute::StructRet))
881 Assert1(Idx == 1, "Attribute sret is not on first parameter!", V);
884 if (!Attrs.hasAttributes(AttributeSet::FunctionIndex))
887 VerifyAttributeTypes(Attrs, AttributeSet::FunctionIndex, true, V);
889 Assert1(!(Attrs.hasAttribute(AttributeSet::FunctionIndex,
890 Attribute::ReadNone) &&
891 Attrs.hasAttribute(AttributeSet::FunctionIndex,
892 Attribute::ReadOnly)),
893 "Attributes 'readnone and readonly' are incompatible!", V);
895 Assert1(!(Attrs.hasAttribute(AttributeSet::FunctionIndex,
896 Attribute::NoInline) &&
897 Attrs.hasAttribute(AttributeSet::FunctionIndex,
898 Attribute::AlwaysInline)),
899 "Attributes 'noinline and alwaysinline' are incompatible!", V);
902 void Verifier::VerifyBitcastType(const Value *V, Type *DestTy, Type *SrcTy) {
903 // Get the size of the types in bits, we'll need this later
904 unsigned SrcBitSize = SrcTy->getPrimitiveSizeInBits();
905 unsigned DestBitSize = DestTy->getPrimitiveSizeInBits();
907 // BitCast implies a no-op cast of type only. No bits change.
908 // However, you can't cast pointers to anything but pointers.
909 Assert1(SrcTy->isPointerTy() == DestTy->isPointerTy(),
910 "Bitcast requires both operands to be pointer or neither", V);
911 Assert1(SrcBitSize == DestBitSize,
912 "Bitcast requires types of same width", V);
914 // Disallow aggregates.
915 Assert1(!SrcTy->isAggregateType(),
916 "Bitcast operand must not be aggregate", V);
917 Assert1(!DestTy->isAggregateType(),
918 "Bitcast type must not be aggregate", V);
920 // Without datalayout, assume all address spaces are the same size.
921 // Don't check if both types are not pointers.
922 // Skip casts between scalars and vectors.
924 !SrcTy->isPtrOrPtrVectorTy() ||
925 !DestTy->isPtrOrPtrVectorTy() ||
926 SrcTy->isVectorTy() != DestTy->isVectorTy()) {
930 unsigned SrcAS = SrcTy->getPointerAddressSpace();
931 unsigned DstAS = DestTy->getPointerAddressSpace();
933 unsigned SrcASSize = DL->getPointerSizeInBits(SrcAS);
934 unsigned DstASSize = DL->getPointerSizeInBits(DstAS);
935 Assert1(SrcASSize == DstASSize,
936 "Bitcasts between pointers of different address spaces must have "
937 "the same size pointers, otherwise use PtrToInt/IntToPtr.", V);
940 void Verifier::VerifyConstantExprBitcastType(const ConstantExpr *CE) {
941 if (CE->getOpcode() == Instruction::BitCast) {
942 Type *SrcTy = CE->getOperand(0)->getType();
943 Type *DstTy = CE->getType();
944 VerifyBitcastType(CE, DstTy, SrcTy);
948 bool Verifier::VerifyAttributeCount(AttributeSet Attrs, unsigned Params) {
949 if (Attrs.getNumSlots() == 0)
952 unsigned LastSlot = Attrs.getNumSlots() - 1;
953 unsigned LastIndex = Attrs.getSlotIndex(LastSlot);
954 if (LastIndex <= Params
955 || (LastIndex == AttributeSet::FunctionIndex
956 && (LastSlot == 0 || Attrs.getSlotIndex(LastSlot - 1) <= Params)))
962 // visitFunction - Verify that a function is ok.
964 void Verifier::visitFunction(Function &F) {
965 // Check function arguments.
966 FunctionType *FT = F.getFunctionType();
967 unsigned NumArgs = F.arg_size();
969 Assert1(Context == &F.getContext(),
970 "Function context does not match Module context!", &F);
972 Assert1(!F.hasCommonLinkage(), "Functions may not have common linkage", &F);
973 Assert2(FT->getNumParams() == NumArgs,
974 "# formal arguments must match # of arguments for function type!",
976 Assert1(F.getReturnType()->isFirstClassType() ||
977 F.getReturnType()->isVoidTy() ||
978 F.getReturnType()->isStructTy(),
979 "Functions cannot return aggregate values!", &F);
981 Assert1(!F.hasStructRetAttr() || F.getReturnType()->isVoidTy(),
982 "Invalid struct return type!", &F);
984 AttributeSet Attrs = F.getAttributes();
986 Assert1(VerifyAttributeCount(Attrs, FT->getNumParams()),
987 "Attribute after last parameter!", &F);
989 // Check function attributes.
990 VerifyFunctionAttrs(FT, Attrs, &F);
992 // On function declarations/definitions, we do not support the builtin
993 // attribute. We do not check this in VerifyFunctionAttrs since that is
994 // checking for Attributes that can/can not ever be on functions.
995 Assert1(!Attrs.hasAttribute(AttributeSet::FunctionIndex,
997 "Attribute 'builtin' can only be applied to a callsite.", &F);
999 // Check that this function meets the restrictions on this calling convention.
1000 switch (F.getCallingConv()) {
1003 case CallingConv::C:
1005 case CallingConv::Fast:
1006 case CallingConv::Cold:
1007 case CallingConv::X86_FastCall:
1008 case CallingConv::X86_ThisCall:
1009 case CallingConv::Intel_OCL_BI:
1010 case CallingConv::PTX_Kernel:
1011 case CallingConv::PTX_Device:
1012 Assert1(!F.isVarArg(),
1013 "Varargs functions must have C calling conventions!", &F);
1017 bool isLLVMdotName = F.getName().size() >= 5 &&
1018 F.getName().substr(0, 5) == "llvm.";
1020 // Check that the argument values match the function type for this function...
1022 for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end();
1024 Assert2(I->getType() == FT->getParamType(i),
1025 "Argument value does not match function argument type!",
1026 I, FT->getParamType(i));
1027 Assert1(I->getType()->isFirstClassType(),
1028 "Function arguments must have first-class types!", I);
1030 Assert2(!I->getType()->isMetadataTy(),
1031 "Function takes metadata but isn't an intrinsic", I, &F);
1034 if (F.isMaterializable()) {
1035 // Function has a body somewhere we can't see.
1036 } else if (F.isDeclaration()) {
1037 Assert1(F.hasExternalLinkage() || F.hasDLLImportLinkage() ||
1038 F.hasExternalWeakLinkage(),
1039 "invalid linkage type for function declaration", &F);
1041 // Verify that this function (which has a body) is not named "llvm.*". It
1042 // is not legal to define intrinsics.
1043 Assert1(!isLLVMdotName, "llvm intrinsics cannot be defined!", &F);
1045 // Check the entry node
1046 BasicBlock *Entry = &F.getEntryBlock();
1047 Assert1(pred_begin(Entry) == pred_end(Entry),
1048 "Entry block to function must not have predecessors!", Entry);
1050 // The address of the entry block cannot be taken, unless it is dead.
1051 if (Entry->hasAddressTaken()) {
1052 Assert1(!BlockAddress::get(Entry)->isConstantUsed(),
1053 "blockaddress may not be used with the entry block!", Entry);
1057 // If this function is actually an intrinsic, verify that it is only used in
1058 // direct call/invokes, never having its "address taken".
1059 if (F.getIntrinsicID()) {
1061 if (F.hasAddressTaken(&U))
1062 Assert1(0, "Invalid user of intrinsic instruction!", U);
1066 // verifyBasicBlock - Verify that a basic block is well formed...
1068 void Verifier::visitBasicBlock(BasicBlock &BB) {
1069 InstsInThisBlock.clear();
1071 // Ensure that basic blocks have terminators!
1072 Assert1(BB.getTerminator(), "Basic Block does not have terminator!", &BB);
1074 // Check constraints that this basic block imposes on all of the PHI nodes in
1076 if (isa<PHINode>(BB.front())) {
1077 SmallVector<BasicBlock*, 8> Preds(pred_begin(&BB), pred_end(&BB));
1078 SmallVector<std::pair<BasicBlock*, Value*>, 8> Values;
1079 std::sort(Preds.begin(), Preds.end());
1081 for (BasicBlock::iterator I = BB.begin(); (PN = dyn_cast<PHINode>(I));++I) {
1082 // Ensure that PHI nodes have at least one entry!
1083 Assert1(PN->getNumIncomingValues() != 0,
1084 "PHI nodes must have at least one entry. If the block is dead, "
1085 "the PHI should be removed!", PN);
1086 Assert1(PN->getNumIncomingValues() == Preds.size(),
1087 "PHINode should have one entry for each predecessor of its "
1088 "parent basic block!", PN);
1090 // Get and sort all incoming values in the PHI node...
1092 Values.reserve(PN->getNumIncomingValues());
1093 for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i)
1094 Values.push_back(std::make_pair(PN->getIncomingBlock(i),
1095 PN->getIncomingValue(i)));
1096 std::sort(Values.begin(), Values.end());
1098 for (unsigned i = 0, e = Values.size(); i != e; ++i) {
1099 // Check to make sure that if there is more than one entry for a
1100 // particular basic block in this PHI node, that the incoming values are
1103 Assert4(i == 0 || Values[i].first != Values[i-1].first ||
1104 Values[i].second == Values[i-1].second,
1105 "PHI node has multiple entries for the same basic block with "
1106 "different incoming values!", PN, Values[i].first,
1107 Values[i].second, Values[i-1].second);
1109 // Check to make sure that the predecessors and PHI node entries are
1111 Assert3(Values[i].first == Preds[i],
1112 "PHI node entries do not match predecessors!", PN,
1113 Values[i].first, Preds[i]);
1119 void Verifier::visitTerminatorInst(TerminatorInst &I) {
1120 // Ensure that terminators only exist at the end of the basic block.
1121 Assert1(&I == I.getParent()->getTerminator(),
1122 "Terminator found in the middle of a basic block!", I.getParent());
1123 visitInstruction(I);
1126 void Verifier::visitBranchInst(BranchInst &BI) {
1127 if (BI.isConditional()) {
1128 Assert2(BI.getCondition()->getType()->isIntegerTy(1),
1129 "Branch condition is not 'i1' type!", &BI, BI.getCondition());
1131 visitTerminatorInst(BI);
1134 void Verifier::visitReturnInst(ReturnInst &RI) {
1135 Function *F = RI.getParent()->getParent();
1136 unsigned N = RI.getNumOperands();
1137 if (F->getReturnType()->isVoidTy())
1139 "Found return instr that returns non-void in Function of void "
1140 "return type!", &RI, F->getReturnType());
1142 Assert2(N == 1 && F->getReturnType() == RI.getOperand(0)->getType(),
1143 "Function return type does not match operand "
1144 "type of return inst!", &RI, F->getReturnType());
1146 // Check to make sure that the return value has necessary properties for
1148 visitTerminatorInst(RI);
1151 void Verifier::visitSwitchInst(SwitchInst &SI) {
1152 // Check to make sure that all of the constants in the switch instruction
1153 // have the same type as the switched-on value.
1154 Type *SwitchTy = SI.getCondition()->getType();
1155 IntegerType *IntTy = cast<IntegerType>(SwitchTy);
1156 IntegersSubsetToBB Mapping;
1157 std::map<IntegersSubset::Range, unsigned> RangeSetMap;
1158 for (SwitchInst::CaseIt i = SI.case_begin(), e = SI.case_end(); i != e; ++i) {
1159 IntegersSubset CaseRanges = i.getCaseValueEx();
1160 for (unsigned ri = 0, rie = CaseRanges.getNumItems(); ri < rie; ++ri) {
1161 IntegersSubset::Range r = CaseRanges.getItem(ri);
1162 Assert1(((const APInt&)r.getLow()).getBitWidth() == IntTy->getBitWidth(),
1163 "Switch constants must all be same type as switch value!", &SI);
1164 Assert1(((const APInt&)r.getHigh()).getBitWidth() == IntTy->getBitWidth(),
1165 "Switch constants must all be same type as switch value!", &SI);
1167 RangeSetMap[r] = i.getCaseIndex();
1171 IntegersSubsetToBB::RangeIterator errItem;
1172 if (!Mapping.verify(errItem)) {
1173 unsigned CaseIndex = RangeSetMap[errItem->first];
1174 SwitchInst::CaseIt i(&SI, CaseIndex);
1175 Assert2(false, "Duplicate integer as switch case", &SI, i.getCaseValueEx());
1178 visitTerminatorInst(SI);
1181 void Verifier::visitIndirectBrInst(IndirectBrInst &BI) {
1182 Assert1(BI.getAddress()->getType()->isPointerTy(),
1183 "Indirectbr operand must have pointer type!", &BI);
1184 for (unsigned i = 0, e = BI.getNumDestinations(); i != e; ++i)
1185 Assert1(BI.getDestination(i)->getType()->isLabelTy(),
1186 "Indirectbr destinations must all have pointer type!", &BI);
1188 visitTerminatorInst(BI);
1191 void Verifier::visitSelectInst(SelectInst &SI) {
1192 Assert1(!SelectInst::areInvalidOperands(SI.getOperand(0), SI.getOperand(1),
1194 "Invalid operands for select instruction!", &SI);
1196 Assert1(SI.getTrueValue()->getType() == SI.getType(),
1197 "Select values must have same type as select instruction!", &SI);
1198 visitInstruction(SI);
1201 /// visitUserOp1 - User defined operators shouldn't live beyond the lifetime of
1202 /// a pass, if any exist, it's an error.
1204 void Verifier::visitUserOp1(Instruction &I) {
1205 Assert1(0, "User-defined operators should not live outside of a pass!", &I);
1208 void Verifier::visitTruncInst(TruncInst &I) {
1209 // Get the source and destination types
1210 Type *SrcTy = I.getOperand(0)->getType();
1211 Type *DestTy = I.getType();
1213 // Get the size of the types in bits, we'll need this later
1214 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1215 unsigned DestBitSize = DestTy->getScalarSizeInBits();
1217 Assert1(SrcTy->isIntOrIntVectorTy(), "Trunc only operates on integer", &I);
1218 Assert1(DestTy->isIntOrIntVectorTy(), "Trunc only produces integer", &I);
1219 Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1220 "trunc source and destination must both be a vector or neither", &I);
1221 Assert1(SrcBitSize > DestBitSize,"DestTy too big for Trunc", &I);
1223 visitInstruction(I);
1226 void Verifier::visitZExtInst(ZExtInst &I) {
1227 // Get the source and destination types
1228 Type *SrcTy = I.getOperand(0)->getType();
1229 Type *DestTy = I.getType();
1231 // Get the size of the types in bits, we'll need this later
1232 Assert1(SrcTy->isIntOrIntVectorTy(), "ZExt only operates on integer", &I);
1233 Assert1(DestTy->isIntOrIntVectorTy(), "ZExt only produces an integer", &I);
1234 Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1235 "zext source and destination must both be a vector or neither", &I);
1236 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1237 unsigned DestBitSize = DestTy->getScalarSizeInBits();
1239 Assert1(SrcBitSize < DestBitSize,"Type too small for ZExt", &I);
1241 visitInstruction(I);
1244 void Verifier::visitSExtInst(SExtInst &I) {
1245 // Get the source and destination types
1246 Type *SrcTy = I.getOperand(0)->getType();
1247 Type *DestTy = I.getType();
1249 // Get the size of the types in bits, we'll need this later
1250 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1251 unsigned DestBitSize = DestTy->getScalarSizeInBits();
1253 Assert1(SrcTy->isIntOrIntVectorTy(), "SExt only operates on integer", &I);
1254 Assert1(DestTy->isIntOrIntVectorTy(), "SExt only produces an integer", &I);
1255 Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1256 "sext source and destination must both be a vector or neither", &I);
1257 Assert1(SrcBitSize < DestBitSize,"Type too small for SExt", &I);
1259 visitInstruction(I);
1262 void Verifier::visitFPTruncInst(FPTruncInst &I) {
1263 // Get the source and destination types
1264 Type *SrcTy = I.getOperand(0)->getType();
1265 Type *DestTy = I.getType();
1266 // Get the size of the types in bits, we'll need this later
1267 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1268 unsigned DestBitSize = DestTy->getScalarSizeInBits();
1270 Assert1(SrcTy->isFPOrFPVectorTy(),"FPTrunc only operates on FP", &I);
1271 Assert1(DestTy->isFPOrFPVectorTy(),"FPTrunc only produces an FP", &I);
1272 Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1273 "fptrunc source and destination must both be a vector or neither",&I);
1274 Assert1(SrcBitSize > DestBitSize,"DestTy too big for FPTrunc", &I);
1276 visitInstruction(I);
1279 void Verifier::visitFPExtInst(FPExtInst &I) {
1280 // Get the source and destination types
1281 Type *SrcTy = I.getOperand(0)->getType();
1282 Type *DestTy = I.getType();
1284 // Get the size of the types in bits, we'll need this later
1285 unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
1286 unsigned DestBitSize = DestTy->getScalarSizeInBits();
1288 Assert1(SrcTy->isFPOrFPVectorTy(),"FPExt only operates on FP", &I);
1289 Assert1(DestTy->isFPOrFPVectorTy(),"FPExt only produces an FP", &I);
1290 Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1291 "fpext source and destination must both be a vector or neither", &I);
1292 Assert1(SrcBitSize < DestBitSize,"DestTy too small for FPExt", &I);
1294 visitInstruction(I);
1297 void Verifier::visitUIToFPInst(UIToFPInst &I) {
1298 // Get the source and destination types
1299 Type *SrcTy = I.getOperand(0)->getType();
1300 Type *DestTy = I.getType();
1302 bool SrcVec = SrcTy->isVectorTy();
1303 bool DstVec = DestTy->isVectorTy();
1305 Assert1(SrcVec == DstVec,
1306 "UIToFP source and dest must both be vector or scalar", &I);
1307 Assert1(SrcTy->isIntOrIntVectorTy(),
1308 "UIToFP source must be integer or integer vector", &I);
1309 Assert1(DestTy->isFPOrFPVectorTy(),
1310 "UIToFP result must be FP or FP vector", &I);
1312 if (SrcVec && DstVec)
1313 Assert1(cast<VectorType>(SrcTy)->getNumElements() ==
1314 cast<VectorType>(DestTy)->getNumElements(),
1315 "UIToFP source and dest vector length mismatch", &I);
1317 visitInstruction(I);
1320 void Verifier::visitSIToFPInst(SIToFPInst &I) {
1321 // Get the source and destination types
1322 Type *SrcTy = I.getOperand(0)->getType();
1323 Type *DestTy = I.getType();
1325 bool SrcVec = SrcTy->isVectorTy();
1326 bool DstVec = DestTy->isVectorTy();
1328 Assert1(SrcVec == DstVec,
1329 "SIToFP source and dest must both be vector or scalar", &I);
1330 Assert1(SrcTy->isIntOrIntVectorTy(),
1331 "SIToFP source must be integer or integer vector", &I);
1332 Assert1(DestTy->isFPOrFPVectorTy(),
1333 "SIToFP result must be FP or FP vector", &I);
1335 if (SrcVec && DstVec)
1336 Assert1(cast<VectorType>(SrcTy)->getNumElements() ==
1337 cast<VectorType>(DestTy)->getNumElements(),
1338 "SIToFP source and dest vector length mismatch", &I);
1340 visitInstruction(I);
1343 void Verifier::visitFPToUIInst(FPToUIInst &I) {
1344 // Get the source and destination types
1345 Type *SrcTy = I.getOperand(0)->getType();
1346 Type *DestTy = I.getType();
1348 bool SrcVec = SrcTy->isVectorTy();
1349 bool DstVec = DestTy->isVectorTy();
1351 Assert1(SrcVec == DstVec,
1352 "FPToUI source and dest must both be vector or scalar", &I);
1353 Assert1(SrcTy->isFPOrFPVectorTy(), "FPToUI source must be FP or FP vector",
1355 Assert1(DestTy->isIntOrIntVectorTy(),
1356 "FPToUI result must be integer or integer vector", &I);
1358 if (SrcVec && DstVec)
1359 Assert1(cast<VectorType>(SrcTy)->getNumElements() ==
1360 cast<VectorType>(DestTy)->getNumElements(),
1361 "FPToUI source and dest vector length mismatch", &I);
1363 visitInstruction(I);
1366 void Verifier::visitFPToSIInst(FPToSIInst &I) {
1367 // Get the source and destination types
1368 Type *SrcTy = I.getOperand(0)->getType();
1369 Type *DestTy = I.getType();
1371 bool SrcVec = SrcTy->isVectorTy();
1372 bool DstVec = DestTy->isVectorTy();
1374 Assert1(SrcVec == DstVec,
1375 "FPToSI source and dest must both be vector or scalar", &I);
1376 Assert1(SrcTy->isFPOrFPVectorTy(),
1377 "FPToSI source must be FP or FP vector", &I);
1378 Assert1(DestTy->isIntOrIntVectorTy(),
1379 "FPToSI result must be integer or integer vector", &I);
1381 if (SrcVec && DstVec)
1382 Assert1(cast<VectorType>(SrcTy)->getNumElements() ==
1383 cast<VectorType>(DestTy)->getNumElements(),
1384 "FPToSI source and dest vector length mismatch", &I);
1386 visitInstruction(I);
1389 void Verifier::visitPtrToIntInst(PtrToIntInst &I) {
1390 // Get the source and destination types
1391 Type *SrcTy = I.getOperand(0)->getType();
1392 Type *DestTy = I.getType();
1394 Assert1(SrcTy->getScalarType()->isPointerTy(),
1395 "PtrToInt source must be pointer", &I);
1396 Assert1(DestTy->getScalarType()->isIntegerTy(),
1397 "PtrToInt result must be integral", &I);
1398 Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1399 "PtrToInt type mismatch", &I);
1401 if (SrcTy->isVectorTy()) {
1402 VectorType *VSrc = dyn_cast<VectorType>(SrcTy);
1403 VectorType *VDest = dyn_cast<VectorType>(DestTy);
1404 Assert1(VSrc->getNumElements() == VDest->getNumElements(),
1405 "PtrToInt Vector width mismatch", &I);
1408 visitInstruction(I);
1411 void Verifier::visitIntToPtrInst(IntToPtrInst &I) {
1412 // Get the source and destination types
1413 Type *SrcTy = I.getOperand(0)->getType();
1414 Type *DestTy = I.getType();
1416 Assert1(SrcTy->getScalarType()->isIntegerTy(),
1417 "IntToPtr source must be an integral", &I);
1418 Assert1(DestTy->getScalarType()->isPointerTy(),
1419 "IntToPtr result must be a pointer",&I);
1420 Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
1421 "IntToPtr type mismatch", &I);
1422 if (SrcTy->isVectorTy()) {
1423 VectorType *VSrc = dyn_cast<VectorType>(SrcTy);
1424 VectorType *VDest = dyn_cast<VectorType>(DestTy);
1425 Assert1(VSrc->getNumElements() == VDest->getNumElements(),
1426 "IntToPtr Vector width mismatch", &I);
1428 visitInstruction(I);
1431 void Verifier::visitBitCastInst(BitCastInst &I) {
1432 Type *SrcTy = I.getOperand(0)->getType();
1433 Type *DestTy = I.getType();
1434 VerifyBitcastType(&I, DestTy, SrcTy);
1435 visitInstruction(I);
1438 /// visitPHINode - Ensure that a PHI node is well formed.
1440 void Verifier::visitPHINode(PHINode &PN) {
1441 // Ensure that the PHI nodes are all grouped together at the top of the block.
1442 // This can be tested by checking whether the instruction before this is
1443 // either nonexistent (because this is begin()) or is a PHI node. If not,
1444 // then there is some other instruction before a PHI.
1445 Assert2(&PN == &PN.getParent()->front() ||
1446 isa<PHINode>(--BasicBlock::iterator(&PN)),
1447 "PHI nodes not grouped at top of basic block!",
1448 &PN, PN.getParent());
1450 // Check that all of the values of the PHI node have the same type as the
1451 // result, and that the incoming blocks are really basic blocks.
1452 for (unsigned i = 0, e = PN.getNumIncomingValues(); i != e; ++i) {
1453 Assert1(PN.getType() == PN.getIncomingValue(i)->getType(),
1454 "PHI node operands are not the same type as the result!", &PN);
1457 // All other PHI node constraints are checked in the visitBasicBlock method.
1459 visitInstruction(PN);
1462 void Verifier::VerifyCallSite(CallSite CS) {
1463 Instruction *I = CS.getInstruction();
1465 Assert1(CS.getCalledValue()->getType()->isPointerTy(),
1466 "Called function must be a pointer!", I);
1467 PointerType *FPTy = cast<PointerType>(CS.getCalledValue()->getType());
1469 Assert1(FPTy->getElementType()->isFunctionTy(),
1470 "Called function is not pointer to function type!", I);
1471 FunctionType *FTy = cast<FunctionType>(FPTy->getElementType());
1473 // Verify that the correct number of arguments are being passed
1474 if (FTy->isVarArg())
1475 Assert1(CS.arg_size() >= FTy->getNumParams(),
1476 "Called function requires more parameters than were provided!",I);
1478 Assert1(CS.arg_size() == FTy->getNumParams(),
1479 "Incorrect number of arguments passed to called function!", I);
1481 // Verify that all arguments to the call match the function type.
1482 for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i)
1483 Assert3(CS.getArgument(i)->getType() == FTy->getParamType(i),
1484 "Call parameter type does not match function signature!",
1485 CS.getArgument(i), FTy->getParamType(i), I);
1487 AttributeSet Attrs = CS.getAttributes();
1489 Assert1(VerifyAttributeCount(Attrs, CS.arg_size()),
1490 "Attribute after last parameter!", I);
1492 // Verify call attributes.
1493 VerifyFunctionAttrs(FTy, Attrs, I);
1495 if (FTy->isVarArg()) {
1496 // FIXME? is 'nest' even legal here?
1497 bool SawNest = false;
1498 bool SawReturned = false;
1500 for (unsigned Idx = 1; Idx < 1 + FTy->getNumParams(); ++Idx) {
1501 if (Attrs.hasAttribute(Idx, Attribute::Nest))
1503 if (Attrs.hasAttribute(Idx, Attribute::Returned))
1507 // Check attributes on the varargs part.
1508 for (unsigned Idx = 1 + FTy->getNumParams(); Idx <= CS.arg_size(); ++Idx) {
1509 Type *Ty = CS.getArgument(Idx-1)->getType();
1510 VerifyParameterAttrs(Attrs, Idx, Ty, false, I);
1512 if (Attrs.hasAttribute(Idx, Attribute::Nest)) {
1513 Assert1(!SawNest, "More than one parameter has attribute nest!", I);
1517 if (Attrs.hasAttribute(Idx, Attribute::Returned)) {
1518 Assert1(!SawReturned, "More than one parameter has attribute returned!",
1520 Assert1(Ty->canLosslesslyBitCastTo(FTy->getReturnType()),
1521 "Incompatible argument and return types for 'returned' "
1526 Assert1(!Attrs.hasAttribute(Idx, Attribute::StructRet),
1527 "Attribute 'sret' cannot be used for vararg call arguments!", I);
1531 // Verify that there's no metadata unless it's a direct call to an intrinsic.
1532 if (CS.getCalledFunction() == 0 ||
1533 !CS.getCalledFunction()->getName().startswith("llvm.")) {
1534 for (FunctionType::param_iterator PI = FTy->param_begin(),
1535 PE = FTy->param_end(); PI != PE; ++PI)
1536 Assert1(!(*PI)->isMetadataTy(),
1537 "Function has metadata parameter but isn't an intrinsic", I);
1540 // If the call site has the 'builtin' attribute, verify that it's applied to a
1541 // direct call to a function with the 'nobuiltin' attribute.
1542 if (CS.hasFnAttr(Attribute::Builtin))
1543 Assert1(CS.getCalledFunction() &&
1544 CS.getCalledFunction()->hasFnAttribute(Attribute::NoBuiltin),
1545 "Attribute 'builtin' can only be used in a call to a function with "
1546 "the 'nobuiltin' attribute.", I);
1548 visitInstruction(*I);
1551 void Verifier::visitCallInst(CallInst &CI) {
1552 VerifyCallSite(&CI);
1554 if (Function *F = CI.getCalledFunction())
1555 if (Intrinsic::ID ID = (Intrinsic::ID)F->getIntrinsicID())
1556 visitIntrinsicFunctionCall(ID, CI);
1559 void Verifier::visitInvokeInst(InvokeInst &II) {
1560 VerifyCallSite(&II);
1562 // Verify that there is a landingpad instruction as the first non-PHI
1563 // instruction of the 'unwind' destination.
1564 Assert1(II.getUnwindDest()->isLandingPad(),
1565 "The unwind destination does not have a landingpad instruction!",&II);
1567 visitTerminatorInst(II);
1570 /// visitBinaryOperator - Check that both arguments to the binary operator are
1571 /// of the same type!
1573 void Verifier::visitBinaryOperator(BinaryOperator &B) {
1574 Assert1(B.getOperand(0)->getType() == B.getOperand(1)->getType(),
1575 "Both operands to a binary operator are not of the same type!", &B);
1577 switch (B.getOpcode()) {
1578 // Check that integer arithmetic operators are only used with
1579 // integral operands.
1580 case Instruction::Add:
1581 case Instruction::Sub:
1582 case Instruction::Mul:
1583 case Instruction::SDiv:
1584 case Instruction::UDiv:
1585 case Instruction::SRem:
1586 case Instruction::URem:
1587 Assert1(B.getType()->isIntOrIntVectorTy(),
1588 "Integer arithmetic operators only work with integral types!", &B);
1589 Assert1(B.getType() == B.getOperand(0)->getType(),
1590 "Integer arithmetic operators must have same type "
1591 "for operands and result!", &B);
1593 // Check that floating-point arithmetic operators are only used with
1594 // floating-point operands.
1595 case Instruction::FAdd:
1596 case Instruction::FSub:
1597 case Instruction::FMul:
1598 case Instruction::FDiv:
1599 case Instruction::FRem:
1600 Assert1(B.getType()->isFPOrFPVectorTy(),
1601 "Floating-point arithmetic operators only work with "
1602 "floating-point types!", &B);
1603 Assert1(B.getType() == B.getOperand(0)->getType(),
1604 "Floating-point arithmetic operators must have same type "
1605 "for operands and result!", &B);
1607 // Check that logical operators are only used with integral operands.
1608 case Instruction::And:
1609 case Instruction::Or:
1610 case Instruction::Xor:
1611 Assert1(B.getType()->isIntOrIntVectorTy(),
1612 "Logical operators only work with integral types!", &B);
1613 Assert1(B.getType() == B.getOperand(0)->getType(),
1614 "Logical operators must have same type for operands and result!",
1617 case Instruction::Shl:
1618 case Instruction::LShr:
1619 case Instruction::AShr:
1620 Assert1(B.getType()->isIntOrIntVectorTy(),
1621 "Shifts only work with integral types!", &B);
1622 Assert1(B.getType() == B.getOperand(0)->getType(),
1623 "Shift return type must be same as operands!", &B);
1626 llvm_unreachable("Unknown BinaryOperator opcode!");
1629 visitInstruction(B);
1632 void Verifier::visitICmpInst(ICmpInst &IC) {
1633 // Check that the operands are the same type
1634 Type *Op0Ty = IC.getOperand(0)->getType();
1635 Type *Op1Ty = IC.getOperand(1)->getType();
1636 Assert1(Op0Ty == Op1Ty,
1637 "Both operands to ICmp instruction are not of the same type!", &IC);
1638 // Check that the operands are the right type
1639 Assert1(Op0Ty->isIntOrIntVectorTy() || Op0Ty->getScalarType()->isPointerTy(),
1640 "Invalid operand types for ICmp instruction", &IC);
1641 // Check that the predicate is valid.
1642 Assert1(IC.getPredicate() >= CmpInst::FIRST_ICMP_PREDICATE &&
1643 IC.getPredicate() <= CmpInst::LAST_ICMP_PREDICATE,
1644 "Invalid predicate in ICmp instruction!", &IC);
1646 visitInstruction(IC);
1649 void Verifier::visitFCmpInst(FCmpInst &FC) {
1650 // Check that the operands are the same type
1651 Type *Op0Ty = FC.getOperand(0)->getType();
1652 Type *Op1Ty = FC.getOperand(1)->getType();
1653 Assert1(Op0Ty == Op1Ty,
1654 "Both operands to FCmp instruction are not of the same type!", &FC);
1655 // Check that the operands are the right type
1656 Assert1(Op0Ty->isFPOrFPVectorTy(),
1657 "Invalid operand types for FCmp instruction", &FC);
1658 // Check that the predicate is valid.
1659 Assert1(FC.getPredicate() >= CmpInst::FIRST_FCMP_PREDICATE &&
1660 FC.getPredicate() <= CmpInst::LAST_FCMP_PREDICATE,
1661 "Invalid predicate in FCmp instruction!", &FC);
1663 visitInstruction(FC);
1666 void Verifier::visitExtractElementInst(ExtractElementInst &EI) {
1667 Assert1(ExtractElementInst::isValidOperands(EI.getOperand(0),
1669 "Invalid extractelement operands!", &EI);
1670 visitInstruction(EI);
1673 void Verifier::visitInsertElementInst(InsertElementInst &IE) {
1674 Assert1(InsertElementInst::isValidOperands(IE.getOperand(0),
1677 "Invalid insertelement operands!", &IE);
1678 visitInstruction(IE);
1681 void Verifier::visitShuffleVectorInst(ShuffleVectorInst &SV) {
1682 Assert1(ShuffleVectorInst::isValidOperands(SV.getOperand(0), SV.getOperand(1),
1684 "Invalid shufflevector operands!", &SV);
1685 visitInstruction(SV);
1688 void Verifier::visitGetElementPtrInst(GetElementPtrInst &GEP) {
1689 Type *TargetTy = GEP.getPointerOperandType()->getScalarType();
1691 Assert1(isa<PointerType>(TargetTy),
1692 "GEP base pointer is not a vector or a vector of pointers", &GEP);
1693 Assert1(cast<PointerType>(TargetTy)->getElementType()->isSized(),
1694 "GEP into unsized type!", &GEP);
1695 Assert1(GEP.getPointerOperandType()->isVectorTy() ==
1696 GEP.getType()->isVectorTy(), "Vector GEP must return a vector value",
1699 SmallVector<Value*, 16> Idxs(GEP.idx_begin(), GEP.idx_end());
1701 GetElementPtrInst::getIndexedType(GEP.getPointerOperandType(), Idxs);
1702 Assert1(ElTy, "Invalid indices for GEP pointer type!", &GEP);
1704 Assert2(GEP.getType()->getScalarType()->isPointerTy() &&
1705 cast<PointerType>(GEP.getType()->getScalarType())->getElementType()
1706 == ElTy, "GEP is not of right type for indices!", &GEP, ElTy);
1708 if (GEP.getPointerOperandType()->isVectorTy()) {
1709 // Additional checks for vector GEPs.
1710 unsigned GepWidth = GEP.getPointerOperandType()->getVectorNumElements();
1711 Assert1(GepWidth == GEP.getType()->getVectorNumElements(),
1712 "Vector GEP result width doesn't match operand's", &GEP);
1713 for (unsigned i = 0, e = Idxs.size(); i != e; ++i) {
1714 Type *IndexTy = Idxs[i]->getType();
1715 Assert1(IndexTy->isVectorTy(),
1716 "Vector GEP must have vector indices!", &GEP);
1717 unsigned IndexWidth = IndexTy->getVectorNumElements();
1718 Assert1(IndexWidth == GepWidth, "Invalid GEP index vector width", &GEP);
1721 visitInstruction(GEP);
1724 static bool isContiguous(const ConstantRange &A, const ConstantRange &B) {
1725 return A.getUpper() == B.getLower() || A.getLower() == B.getUpper();
1728 void Verifier::visitLoadInst(LoadInst &LI) {
1729 PointerType *PTy = dyn_cast<PointerType>(LI.getOperand(0)->getType());
1730 Assert1(PTy, "Load operand must be a pointer.", &LI);
1731 Type *ElTy = PTy->getElementType();
1732 Assert2(ElTy == LI.getType(),
1733 "Load result type does not match pointer operand type!", &LI, ElTy);
1734 if (LI.isAtomic()) {
1735 Assert1(LI.getOrdering() != Release && LI.getOrdering() != AcquireRelease,
1736 "Load cannot have Release ordering", &LI);
1737 Assert1(LI.getAlignment() != 0,
1738 "Atomic load must specify explicit alignment", &LI);
1739 if (!ElTy->isPointerTy()) {
1740 Assert2(ElTy->isIntegerTy(),
1741 "atomic store operand must have integer type!",
1743 unsigned Size = ElTy->getPrimitiveSizeInBits();
1744 Assert2(Size >= 8 && !(Size & (Size - 1)),
1745 "atomic store operand must be power-of-two byte-sized integer",
1749 Assert1(LI.getSynchScope() == CrossThread,
1750 "Non-atomic load cannot have SynchronizationScope specified", &LI);
1753 if (MDNode *Range = LI.getMetadata(LLVMContext::MD_range)) {
1754 unsigned NumOperands = Range->getNumOperands();
1755 Assert1(NumOperands % 2 == 0, "Unfinished range!", Range);
1756 unsigned NumRanges = NumOperands / 2;
1757 Assert1(NumRanges >= 1, "It should have at least one range!", Range);
1759 ConstantRange LastRange(1); // Dummy initial value
1760 for (unsigned i = 0; i < NumRanges; ++i) {
1761 ConstantInt *Low = dyn_cast<ConstantInt>(Range->getOperand(2*i));
1762 Assert1(Low, "The lower limit must be an integer!", Low);
1763 ConstantInt *High = dyn_cast<ConstantInt>(Range->getOperand(2*i + 1));
1764 Assert1(High, "The upper limit must be an integer!", High);
1765 Assert1(High->getType() == Low->getType() &&
1766 High->getType() == ElTy, "Range types must match load type!",
1769 APInt HighV = High->getValue();
1770 APInt LowV = Low->getValue();
1771 ConstantRange CurRange(LowV, HighV);
1772 Assert1(!CurRange.isEmptySet() && !CurRange.isFullSet(),
1773 "Range must not be empty!", Range);
1775 Assert1(CurRange.intersectWith(LastRange).isEmptySet(),
1776 "Intervals are overlapping", Range);
1777 Assert1(LowV.sgt(LastRange.getLower()), "Intervals are not in order",
1779 Assert1(!isContiguous(CurRange, LastRange), "Intervals are contiguous",
1782 LastRange = ConstantRange(LowV, HighV);
1784 if (NumRanges > 2) {
1786 dyn_cast<ConstantInt>(Range->getOperand(0))->getValue();
1788 dyn_cast<ConstantInt>(Range->getOperand(1))->getValue();
1789 ConstantRange FirstRange(FirstLow, FirstHigh);
1790 Assert1(FirstRange.intersectWith(LastRange).isEmptySet(),
1791 "Intervals are overlapping", Range);
1792 Assert1(!isContiguous(FirstRange, LastRange), "Intervals are contiguous",
1799 visitInstruction(LI);
1802 void Verifier::visitStoreInst(StoreInst &SI) {
1803 PointerType *PTy = dyn_cast<PointerType>(SI.getOperand(1)->getType());
1804 Assert1(PTy, "Store operand must be a pointer.", &SI);
1805 Type *ElTy = PTy->getElementType();
1806 Assert2(ElTy == SI.getOperand(0)->getType(),
1807 "Stored value type does not match pointer operand type!",
1809 if (SI.isAtomic()) {
1810 Assert1(SI.getOrdering() != Acquire && SI.getOrdering() != AcquireRelease,
1811 "Store cannot have Acquire ordering", &SI);
1812 Assert1(SI.getAlignment() != 0,
1813 "Atomic store must specify explicit alignment", &SI);
1814 if (!ElTy->isPointerTy()) {
1815 Assert2(ElTy->isIntegerTy(),
1816 "atomic store operand must have integer type!",
1818 unsigned Size = ElTy->getPrimitiveSizeInBits();
1819 Assert2(Size >= 8 && !(Size & (Size - 1)),
1820 "atomic store operand must be power-of-two byte-sized integer",
1824 Assert1(SI.getSynchScope() == CrossThread,
1825 "Non-atomic store cannot have SynchronizationScope specified", &SI);
1827 visitInstruction(SI);
1830 void Verifier::visitAllocaInst(AllocaInst &AI) {
1831 PointerType *PTy = AI.getType();
1832 Assert1(PTy->getAddressSpace() == 0,
1833 "Allocation instruction pointer not in the generic address space!",
1835 Assert1(PTy->getElementType()->isSized(), "Cannot allocate unsized type",
1837 Assert1(AI.getArraySize()->getType()->isIntegerTy(),
1838 "Alloca array size must have integer type", &AI);
1839 visitInstruction(AI);
1842 void Verifier::visitAtomicCmpXchgInst(AtomicCmpXchgInst &CXI) {
1843 Assert1(CXI.getOrdering() != NotAtomic,
1844 "cmpxchg instructions must be atomic.", &CXI);
1845 Assert1(CXI.getOrdering() != Unordered,
1846 "cmpxchg instructions cannot be unordered.", &CXI);
1847 PointerType *PTy = dyn_cast<PointerType>(CXI.getOperand(0)->getType());
1848 Assert1(PTy, "First cmpxchg operand must be a pointer.", &CXI);
1849 Type *ElTy = PTy->getElementType();
1850 Assert2(ElTy->isIntegerTy(),
1851 "cmpxchg operand must have integer type!",
1853 unsigned Size = ElTy->getPrimitiveSizeInBits();
1854 Assert2(Size >= 8 && !(Size & (Size - 1)),
1855 "cmpxchg operand must be power-of-two byte-sized integer",
1857 Assert2(ElTy == CXI.getOperand(1)->getType(),
1858 "Expected value type does not match pointer operand type!",
1860 Assert2(ElTy == CXI.getOperand(2)->getType(),
1861 "Stored value type does not match pointer operand type!",
1863 visitInstruction(CXI);
1866 void Verifier::visitAtomicRMWInst(AtomicRMWInst &RMWI) {
1867 Assert1(RMWI.getOrdering() != NotAtomic,
1868 "atomicrmw instructions must be atomic.", &RMWI);
1869 Assert1(RMWI.getOrdering() != Unordered,
1870 "atomicrmw instructions cannot be unordered.", &RMWI);
1871 PointerType *PTy = dyn_cast<PointerType>(RMWI.getOperand(0)->getType());
1872 Assert1(PTy, "First atomicrmw operand must be a pointer.", &RMWI);
1873 Type *ElTy = PTy->getElementType();
1874 Assert2(ElTy->isIntegerTy(),
1875 "atomicrmw operand must have integer type!",
1877 unsigned Size = ElTy->getPrimitiveSizeInBits();
1878 Assert2(Size >= 8 && !(Size & (Size - 1)),
1879 "atomicrmw operand must be power-of-two byte-sized integer",
1881 Assert2(ElTy == RMWI.getOperand(1)->getType(),
1882 "Argument value type does not match pointer operand type!",
1884 Assert1(AtomicRMWInst::FIRST_BINOP <= RMWI.getOperation() &&
1885 RMWI.getOperation() <= AtomicRMWInst::LAST_BINOP,
1886 "Invalid binary operation!", &RMWI);
1887 visitInstruction(RMWI);
1890 void Verifier::visitFenceInst(FenceInst &FI) {
1891 const AtomicOrdering Ordering = FI.getOrdering();
1892 Assert1(Ordering == Acquire || Ordering == Release ||
1893 Ordering == AcquireRelease || Ordering == SequentiallyConsistent,
1894 "fence instructions may only have "
1895 "acquire, release, acq_rel, or seq_cst ordering.", &FI);
1896 visitInstruction(FI);
1899 void Verifier::visitExtractValueInst(ExtractValueInst &EVI) {
1900 Assert1(ExtractValueInst::getIndexedType(EVI.getAggregateOperand()->getType(),
1901 EVI.getIndices()) ==
1903 "Invalid ExtractValueInst operands!", &EVI);
1905 visitInstruction(EVI);
1908 void Verifier::visitInsertValueInst(InsertValueInst &IVI) {
1909 Assert1(ExtractValueInst::getIndexedType(IVI.getAggregateOperand()->getType(),
1910 IVI.getIndices()) ==
1911 IVI.getOperand(1)->getType(),
1912 "Invalid InsertValueInst operands!", &IVI);
1914 visitInstruction(IVI);
1917 void Verifier::visitLandingPadInst(LandingPadInst &LPI) {
1918 BasicBlock *BB = LPI.getParent();
1920 // The landingpad instruction is ill-formed if it doesn't have any clauses and
1922 Assert1(LPI.getNumClauses() > 0 || LPI.isCleanup(),
1923 "LandingPadInst needs at least one clause or to be a cleanup.", &LPI);
1925 // The landingpad instruction defines its parent as a landing pad block. The
1926 // landing pad block may be branched to only by the unwind edge of an invoke.
1927 for (pred_iterator I = pred_begin(BB), E = pred_end(BB); I != E; ++I) {
1928 const InvokeInst *II = dyn_cast<InvokeInst>((*I)->getTerminator());
1929 Assert1(II && II->getUnwindDest() == BB && II->getNormalDest() != BB,
1930 "Block containing LandingPadInst must be jumped to "
1931 "only by the unwind edge of an invoke.", &LPI);
1934 // The landingpad instruction must be the first non-PHI instruction in the
1936 Assert1(LPI.getParent()->getLandingPadInst() == &LPI,
1937 "LandingPadInst not the first non-PHI instruction in the block.",
1940 // The personality functions for all landingpad instructions within the same
1941 // function should match.
1943 Assert1(LPI.getPersonalityFn() == PersonalityFn,
1944 "Personality function doesn't match others in function", &LPI);
1945 PersonalityFn = LPI.getPersonalityFn();
1947 // All operands must be constants.
1948 Assert1(isa<Constant>(PersonalityFn), "Personality function is not constant!",
1950 for (unsigned i = 0, e = LPI.getNumClauses(); i < e; ++i) {
1951 Value *Clause = LPI.getClause(i);
1952 Assert1(isa<Constant>(Clause), "Clause is not constant!", &LPI);
1953 if (LPI.isCatch(i)) {
1954 Assert1(isa<PointerType>(Clause->getType()),
1955 "Catch operand does not have pointer type!", &LPI);
1957 Assert1(LPI.isFilter(i), "Clause is neither catch nor filter!", &LPI);
1958 Assert1(isa<ConstantArray>(Clause) || isa<ConstantAggregateZero>(Clause),
1959 "Filter operand is not an array of constants!", &LPI);
1963 visitInstruction(LPI);
1966 void Verifier::verifyDominatesUse(Instruction &I, unsigned i) {
1967 Instruction *Op = cast<Instruction>(I.getOperand(i));
1968 // If the we have an invalid invoke, don't try to compute the dominance.
1969 // We already reject it in the invoke specific checks and the dominance
1970 // computation doesn't handle multiple edges.
1971 if (InvokeInst *II = dyn_cast<InvokeInst>(Op)) {
1972 if (II->getNormalDest() == II->getUnwindDest())
1976 const Use &U = I.getOperandUse(i);
1977 Assert2(InstsInThisBlock.count(Op) || DT->dominates(Op, U),
1978 "Instruction does not dominate all uses!", Op, &I);
1981 /// verifyInstruction - Verify that an instruction is well formed.
1983 void Verifier::visitInstruction(Instruction &I) {
1984 BasicBlock *BB = I.getParent();
1985 Assert1(BB, "Instruction not embedded in basic block!", &I);
1987 if (!isa<PHINode>(I)) { // Check that non-phi nodes are not self referential
1988 for (Value::use_iterator UI = I.use_begin(), UE = I.use_end();
1990 Assert1(*UI != (User*)&I || !DT->isReachableFromEntry(BB),
1991 "Only PHI nodes may reference their own value!", &I);
1994 // Check that void typed values don't have names
1995 Assert1(!I.getType()->isVoidTy() || !I.hasName(),
1996 "Instruction has a name, but provides a void value!", &I);
1998 // Check that the return value of the instruction is either void or a legal
2000 Assert1(I.getType()->isVoidTy() ||
2001 I.getType()->isFirstClassType(),
2002 "Instruction returns a non-scalar type!", &I);
2004 // Check that the instruction doesn't produce metadata. Calls are already
2005 // checked against the callee type.
2006 Assert1(!I.getType()->isMetadataTy() ||
2007 isa<CallInst>(I) || isa<InvokeInst>(I),
2008 "Invalid use of metadata!", &I);
2010 // Check that all uses of the instruction, if they are instructions
2011 // themselves, actually have parent basic blocks. If the use is not an
2012 // instruction, it is an error!
2013 for (User::use_iterator UI = I.use_begin(), UE = I.use_end();
2015 if (Instruction *Used = dyn_cast<Instruction>(*UI))
2016 Assert2(Used->getParent() != 0, "Instruction referencing instruction not"
2017 " embedded in a basic block!", &I, Used);
2019 CheckFailed("Use of instruction is not an instruction!", *UI);
2024 for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i) {
2025 Assert1(I.getOperand(i) != 0, "Instruction has null operand!", &I);
2027 // Check to make sure that only first-class-values are operands to
2029 if (!I.getOperand(i)->getType()->isFirstClassType()) {
2030 Assert1(0, "Instruction operands must be first-class values!", &I);
2033 if (Function *F = dyn_cast<Function>(I.getOperand(i))) {
2034 // Check to make sure that the "address of" an intrinsic function is never
2036 Assert1(!F->isIntrinsic() || i == (isa<CallInst>(I) ? e-1 : 0),
2037 "Cannot take the address of an intrinsic!", &I);
2038 Assert1(!F->isIntrinsic() || isa<CallInst>(I) ||
2039 F->getIntrinsicID() == Intrinsic::donothing,
2040 "Cannot invoke an intrinsinc other than donothing", &I);
2041 Assert1(F->getParent() == Mod, "Referencing function in another module!",
2043 } else if (BasicBlock *OpBB = dyn_cast<BasicBlock>(I.getOperand(i))) {
2044 Assert1(OpBB->getParent() == BB->getParent(),
2045 "Referring to a basic block in another function!", &I);
2046 } else if (Argument *OpArg = dyn_cast<Argument>(I.getOperand(i))) {
2047 Assert1(OpArg->getParent() == BB->getParent(),
2048 "Referring to an argument in another function!", &I);
2049 } else if (GlobalValue *GV = dyn_cast<GlobalValue>(I.getOperand(i))) {
2050 Assert1(GV->getParent() == Mod, "Referencing global in another module!",
2052 } else if (isa<Instruction>(I.getOperand(i))) {
2053 verifyDominatesUse(I, i);
2054 } else if (isa<InlineAsm>(I.getOperand(i))) {
2055 Assert1((i + 1 == e && isa<CallInst>(I)) ||
2056 (i + 3 == e && isa<InvokeInst>(I)),
2057 "Cannot take the address of an inline asm!", &I);
2058 } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(I.getOperand(i))) {
2059 if (CE->getType()->isPtrOrPtrVectorTy()) {
2060 // If we have a ConstantExpr pointer, we need to see if it came from an
2061 // illegal bitcast (inttoptr <constant int> )
2062 SmallVector<const ConstantExpr *, 4> Stack;
2063 SmallPtrSet<const ConstantExpr *, 4> Visited;
2064 Stack.push_back(CE);
2066 while (!Stack.empty()) {
2067 const ConstantExpr *V = Stack.pop_back_val();
2068 if (!Visited.insert(V))
2071 VerifyConstantExprBitcastType(V);
2073 for (unsigned I = 0, N = V->getNumOperands(); I != N; ++I) {
2074 if (ConstantExpr *Op = dyn_cast<ConstantExpr>(V->getOperand(I)))
2075 Stack.push_back(Op);
2082 if (MDNode *MD = I.getMetadata(LLVMContext::MD_fpmath)) {
2083 Assert1(I.getType()->isFPOrFPVectorTy(),
2084 "fpmath requires a floating point result!", &I);
2085 Assert1(MD->getNumOperands() == 1, "fpmath takes one operand!", &I);
2086 Value *Op0 = MD->getOperand(0);
2087 if (ConstantFP *CFP0 = dyn_cast_or_null<ConstantFP>(Op0)) {
2088 APFloat Accuracy = CFP0->getValueAPF();
2089 Assert1(Accuracy.isFiniteNonZero() && !Accuracy.isNegative(),
2090 "fpmath accuracy not a positive number!", &I);
2092 Assert1(false, "invalid fpmath accuracy!", &I);
2096 MDNode *MD = I.getMetadata(LLVMContext::MD_range);
2097 Assert1(!MD || isa<LoadInst>(I), "Ranges are only for loads!", &I);
2099 if (!DisableDebugInfoVerifier) {
2100 MD = I.getMetadata(LLVMContext::MD_dbg);
2101 Finder.processLocation(DILocation(MD));
2104 InstsInThisBlock.insert(&I);
2107 /// VerifyIntrinsicType - Verify that the specified type (which comes from an
2108 /// intrinsic argument or return value) matches the type constraints specified
2109 /// by the .td file (e.g. an "any integer" argument really is an integer).
2111 /// This return true on error but does not print a message.
2112 bool Verifier::VerifyIntrinsicType(Type *Ty,
2113 ArrayRef<Intrinsic::IITDescriptor> &Infos,
2114 SmallVectorImpl<Type*> &ArgTys) {
2115 using namespace Intrinsic;
2117 // If we ran out of descriptors, there are too many arguments.
2118 if (Infos.empty()) return true;
2119 IITDescriptor D = Infos.front();
2120 Infos = Infos.slice(1);
2123 case IITDescriptor::Void: return !Ty->isVoidTy();
2124 case IITDescriptor::MMX: return !Ty->isX86_MMXTy();
2125 case IITDescriptor::Metadata: return !Ty->isMetadataTy();
2126 case IITDescriptor::Half: return !Ty->isHalfTy();
2127 case IITDescriptor::Float: return !Ty->isFloatTy();
2128 case IITDescriptor::Double: return !Ty->isDoubleTy();
2129 case IITDescriptor::Integer: return !Ty->isIntegerTy(D.Integer_Width);
2130 case IITDescriptor::Vector: {
2131 VectorType *VT = dyn_cast<VectorType>(Ty);
2132 return VT == 0 || VT->getNumElements() != D.Vector_Width ||
2133 VerifyIntrinsicType(VT->getElementType(), Infos, ArgTys);
2135 case IITDescriptor::Pointer: {
2136 PointerType *PT = dyn_cast<PointerType>(Ty);
2137 return PT == 0 || PT->getAddressSpace() != D.Pointer_AddressSpace ||
2138 VerifyIntrinsicType(PT->getElementType(), Infos, ArgTys);
2141 case IITDescriptor::Struct: {
2142 StructType *ST = dyn_cast<StructType>(Ty);
2143 if (ST == 0 || ST->getNumElements() != D.Struct_NumElements)
2146 for (unsigned i = 0, e = D.Struct_NumElements; i != e; ++i)
2147 if (VerifyIntrinsicType(ST->getElementType(i), Infos, ArgTys))
2152 case IITDescriptor::Argument:
2153 // Two cases here - If this is the second occurrence of an argument, verify
2154 // that the later instance matches the previous instance.
2155 if (D.getArgumentNumber() < ArgTys.size())
2156 return Ty != ArgTys[D.getArgumentNumber()];
2158 // Otherwise, if this is the first instance of an argument, record it and
2159 // verify the "Any" kind.
2160 assert(D.getArgumentNumber() == ArgTys.size() && "Table consistency error");
2161 ArgTys.push_back(Ty);
2163 switch (D.getArgumentKind()) {
2164 case IITDescriptor::AK_AnyInteger: return !Ty->isIntOrIntVectorTy();
2165 case IITDescriptor::AK_AnyFloat: return !Ty->isFPOrFPVectorTy();
2166 case IITDescriptor::AK_AnyVector: return !isa<VectorType>(Ty);
2167 case IITDescriptor::AK_AnyPointer: return !isa<PointerType>(Ty);
2169 llvm_unreachable("all argument kinds not covered");
2171 case IITDescriptor::ExtendVecArgument:
2172 // This may only be used when referring to a previous vector argument.
2173 return D.getArgumentNumber() >= ArgTys.size() ||
2174 !isa<VectorType>(ArgTys[D.getArgumentNumber()]) ||
2175 VectorType::getExtendedElementVectorType(
2176 cast<VectorType>(ArgTys[D.getArgumentNumber()])) != Ty;
2178 case IITDescriptor::TruncVecArgument:
2179 // This may only be used when referring to a previous vector argument.
2180 return D.getArgumentNumber() >= ArgTys.size() ||
2181 !isa<VectorType>(ArgTys[D.getArgumentNumber()]) ||
2182 VectorType::getTruncatedElementVectorType(
2183 cast<VectorType>(ArgTys[D.getArgumentNumber()])) != Ty;
2185 llvm_unreachable("unhandled");
2188 /// visitIntrinsicFunction - Allow intrinsics to be verified in different ways.
2190 void Verifier::visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI) {
2191 Function *IF = CI.getCalledFunction();
2192 Assert1(IF->isDeclaration(), "Intrinsic functions should never be defined!",
2195 // Verify that the intrinsic prototype lines up with what the .td files
2197 FunctionType *IFTy = IF->getFunctionType();
2198 Assert1(!IFTy->isVarArg(), "Intrinsic prototypes are not varargs", IF);
2200 SmallVector<Intrinsic::IITDescriptor, 8> Table;
2201 getIntrinsicInfoTableEntries(ID, Table);
2202 ArrayRef<Intrinsic::IITDescriptor> TableRef = Table;
2204 SmallVector<Type *, 4> ArgTys;
2205 Assert1(!VerifyIntrinsicType(IFTy->getReturnType(), TableRef, ArgTys),
2206 "Intrinsic has incorrect return type!", IF);
2207 for (unsigned i = 0, e = IFTy->getNumParams(); i != e; ++i)
2208 Assert1(!VerifyIntrinsicType(IFTy->getParamType(i), TableRef, ArgTys),
2209 "Intrinsic has incorrect argument type!", IF);
2210 Assert1(TableRef.empty(), "Intrinsic has too few arguments!", IF);
2212 // Now that we have the intrinsic ID and the actual argument types (and we
2213 // know they are legal for the intrinsic!) get the intrinsic name through the
2214 // usual means. This allows us to verify the mangling of argument types into
2216 Assert1(Intrinsic::getName(ID, ArgTys) == IF->getName(),
2217 "Intrinsic name not mangled correctly for type arguments!", IF);
2219 // If the intrinsic takes MDNode arguments, verify that they are either global
2220 // or are local to *this* function.
2221 for (unsigned i = 0, e = CI.getNumArgOperands(); i != e; ++i)
2222 if (MDNode *MD = dyn_cast<MDNode>(CI.getArgOperand(i)))
2223 visitMDNode(*MD, CI.getParent()->getParent());
2228 case Intrinsic::ctlz: // llvm.ctlz
2229 case Intrinsic::cttz: // llvm.cttz
2230 Assert1(isa<ConstantInt>(CI.getArgOperand(1)),
2231 "is_zero_undef argument of bit counting intrinsics must be a "
2232 "constant int", &CI);
2234 case Intrinsic::dbg_declare: { // llvm.dbg.declare
2235 Assert1(CI.getArgOperand(0) && isa<MDNode>(CI.getArgOperand(0)),
2236 "invalid llvm.dbg.declare intrinsic call 1", &CI);
2237 MDNode *MD = cast<MDNode>(CI.getArgOperand(0));
2238 Assert1(MD->getNumOperands() == 1,
2239 "invalid llvm.dbg.declare intrinsic call 2", &CI);
2240 if (!DisableDebugInfoVerifier)
2241 Finder.processDeclare(cast<DbgDeclareInst>(&CI));
2243 case Intrinsic::dbg_value: { //llvm.dbg.value
2244 if (!DisableDebugInfoVerifier) {
2245 Assert1(CI.getArgOperand(0) && isa<MDNode>(CI.getArgOperand(0)),
2246 "invalid llvm.dbg.value intrinsic call 1", &CI);
2247 Finder.processValue(cast<DbgValueInst>(&CI));
2251 case Intrinsic::memcpy:
2252 case Intrinsic::memmove:
2253 case Intrinsic::memset:
2254 Assert1(isa<ConstantInt>(CI.getArgOperand(3)),
2255 "alignment argument of memory intrinsics must be a constant int",
2257 Assert1(isa<ConstantInt>(CI.getArgOperand(4)),
2258 "isvolatile argument of memory intrinsics must be a constant int",
2261 case Intrinsic::gcroot:
2262 case Intrinsic::gcwrite:
2263 case Intrinsic::gcread:
2264 if (ID == Intrinsic::gcroot) {
2266 dyn_cast<AllocaInst>(CI.getArgOperand(0)->stripPointerCasts());
2267 Assert1(AI, "llvm.gcroot parameter #1 must be an alloca.", &CI);
2268 Assert1(isa<Constant>(CI.getArgOperand(1)),
2269 "llvm.gcroot parameter #2 must be a constant.", &CI);
2270 if (!AI->getType()->getElementType()->isPointerTy()) {
2271 Assert1(!isa<ConstantPointerNull>(CI.getArgOperand(1)),
2272 "llvm.gcroot parameter #1 must either be a pointer alloca, "
2273 "or argument #2 must be a non-null constant.", &CI);
2277 Assert1(CI.getParent()->getParent()->hasGC(),
2278 "Enclosing function does not use GC.", &CI);
2280 case Intrinsic::init_trampoline:
2281 Assert1(isa<Function>(CI.getArgOperand(1)->stripPointerCasts()),
2282 "llvm.init_trampoline parameter #2 must resolve to a function.",
2285 case Intrinsic::prefetch:
2286 Assert1(isa<ConstantInt>(CI.getArgOperand(1)) &&
2287 isa<ConstantInt>(CI.getArgOperand(2)) &&
2288 cast<ConstantInt>(CI.getArgOperand(1))->getZExtValue() < 2 &&
2289 cast<ConstantInt>(CI.getArgOperand(2))->getZExtValue() < 4,
2290 "invalid arguments to llvm.prefetch",
2293 case Intrinsic::stackprotector:
2294 Assert1(isa<AllocaInst>(CI.getArgOperand(1)->stripPointerCasts()),
2295 "llvm.stackprotector parameter #2 must resolve to an alloca.",
2298 case Intrinsic::lifetime_start:
2299 case Intrinsic::lifetime_end:
2300 case Intrinsic::invariant_start:
2301 Assert1(isa<ConstantInt>(CI.getArgOperand(0)),
2302 "size argument of memory use markers must be a constant integer",
2305 case Intrinsic::invariant_end:
2306 Assert1(isa<ConstantInt>(CI.getArgOperand(1)),
2307 "llvm.invariant.end parameter #2 must be a constant integer", &CI);
2312 void Verifier::verifyDebugInfo(Module &M) {
2313 // Verify Debug Info.
2314 if (!DisableDebugInfoVerifier) {
2315 Finder.processModule(M);
2317 for (DebugInfoFinder::iterator I = Finder.compile_unit_begin(),
2318 E = Finder.compile_unit_end(); I != E; ++I)
2319 Assert1(DICompileUnit(*I).Verify(), "DICompileUnit does not Verify!", *I);
2320 for (DebugInfoFinder::iterator I = Finder.subprogram_begin(),
2321 E = Finder.subprogram_end(); I != E; ++I)
2322 Assert1(DISubprogram(*I).Verify(), "DISubprogram does not Verify!", *I);
2323 for (DebugInfoFinder::iterator I = Finder.global_variable_begin(),
2324 E = Finder.global_variable_end(); I != E; ++I)
2325 Assert1(DIGlobalVariable(*I).Verify(),
2326 "DIGlobalVariable does not Verify!", *I);
2327 for (DebugInfoFinder::iterator I = Finder.type_begin(),
2328 E = Finder.type_end(); I != E; ++I)
2329 Assert1(DIType(*I).Verify(), "DIType does not Verify!", *I);
2330 for (DebugInfoFinder::iterator I = Finder.scope_begin(),
2331 E = Finder.scope_end(); I != E; ++I)
2332 Assert1(DIScope(*I).Verify(), "DIScope does not Verify!", *I);
2336 //===----------------------------------------------------------------------===//
2337 // Implement the public interfaces to this file...
2338 //===----------------------------------------------------------------------===//
2340 FunctionPass *llvm::createVerifierPass(VerifierFailureAction action) {
2341 return new Verifier(action);
2345 /// verifyFunction - Check a function for errors, printing messages on stderr.
2346 /// Return true if the function is corrupt.
2348 bool llvm::verifyFunction(const Function &f, VerifierFailureAction action) {
2349 Function &F = const_cast<Function&>(f);
2350 assert(!F.isDeclaration() && "Cannot verify external functions");
2352 FunctionPassManager FPM(F.getParent());
2353 Verifier *V = new Verifier(action);
2359 /// verifyModule - Check a module for errors, printing messages on stderr.
2360 /// Return true if the module is corrupt.
2362 bool llvm::verifyModule(const Module &M, VerifierFailureAction action,
2363 std::string *ErrorInfo) {
2365 Verifier *V = new Verifier(action);
2367 PM.run(const_cast<Module&>(M));
2369 if (ErrorInfo && V->Broken)
2370 *ErrorInfo = V->MessagesStr.str();