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-rw-r--r--lib/IR/Verifier.cpp442
1 files changed, 298 insertions, 144 deletions
diff --git a/lib/IR/Verifier.cpp b/lib/IR/Verifier.cpp
index 089ad1c..bcc38c1 100644
--- a/lib/IR/Verifier.cpp
+++ b/lib/IR/Verifier.cpp
@@ -61,6 +61,7 @@
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/InlineAsm.h"
+#include "llvm/IR/InstIterator.h"
#include "llvm/IR/InstVisitor.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LLVMContext.h"
@@ -76,15 +77,71 @@
#include <cstdarg>
using namespace llvm;
-static cl::opt<bool> DisableDebugInfoVerifier("disable-debug-info-verifier",
- cl::init(true));
+static cl::opt<bool> VerifyDebugInfo("verify-debug-info", cl::init(false));
namespace {
-class Verifier : public InstVisitor<Verifier> {
- friend class InstVisitor<Verifier>;
-
+struct VerifierSupport {
raw_ostream &OS;
const Module *M;
+
+ /// \brief Track the brokenness of the module while recursively visiting.
+ bool Broken;
+
+ explicit VerifierSupport(raw_ostream &OS)
+ : OS(OS), M(nullptr), Broken(false) {}
+
+ void WriteValue(const Value *V) {
+ if (!V)
+ return;
+ if (isa<Instruction>(V)) {
+ OS << *V << '\n';
+ } else {
+ V->printAsOperand(OS, true, M);
+ OS << '\n';
+ }
+ }
+
+ void WriteType(Type *T) {
+ if (!T)
+ return;
+ OS << ' ' << *T;
+ }
+
+ // CheckFailed - A check failed, so print out the condition and the message
+ // that failed. This provides a nice place to put a breakpoint if you want
+ // to see why something is not correct.
+ void CheckFailed(const Twine &Message, const Value *V1 = nullptr,
+ const Value *V2 = nullptr, const Value *V3 = nullptr,
+ const Value *V4 = nullptr) {
+ OS << Message.str() << "\n";
+ WriteValue(V1);
+ WriteValue(V2);
+ WriteValue(V3);
+ WriteValue(V4);
+ Broken = true;
+ }
+
+ void CheckFailed(const Twine &Message, const Value *V1, Type *T2,
+ const Value *V3 = nullptr) {
+ OS << Message.str() << "\n";
+ WriteValue(V1);
+ WriteType(T2);
+ WriteValue(V3);
+ Broken = true;
+ }
+
+ void CheckFailed(const Twine &Message, Type *T1, Type *T2 = nullptr,
+ Type *T3 = nullptr) {
+ OS << Message.str() << "\n";
+ WriteType(T1);
+ WriteType(T2);
+ WriteType(T3);
+ Broken = true;
+ }
+};
+class Verifier : public InstVisitor<Verifier>, VerifierSupport {
+ friend class InstVisitor<Verifier>;
+
LLVMContext *Context;
const DataLayout *DL;
DominatorTree DT;
@@ -104,15 +161,10 @@ class Verifier : public InstVisitor<Verifier> {
/// personality function.
const Value *PersonalityFn;
- /// \brief Finder keeps track of all debug info MDNodes in a Module.
- DebugInfoFinder Finder;
-
- /// \brief Track the brokenness of the module while recursively visiting.
- bool Broken;
-
public:
explicit Verifier(raw_ostream &OS = dbgs())
- : OS(OS), M(0), Context(0), DL(0), PersonalityFn(0), Broken(false) {}
+ : VerifierSupport(OS), Context(nullptr), DL(nullptr),
+ PersonalityFn(nullptr) {}
bool verify(const Function &F) {
M = F.getParent();
@@ -142,16 +194,11 @@ public:
// FIXME: It's really gross that we have to cast away constness here.
DT.recalculate(const_cast<Function &>(F));
- Finder.reset();
Broken = false;
// FIXME: We strip const here because the inst visitor strips const.
visit(const_cast<Function &>(F));
InstsInThisBlock.clear();
- PersonalityFn = 0;
-
- if (!DisableDebugInfoVerifier)
- // Verify Debug Info.
- verifyDebugInfo();
+ PersonalityFn = nullptr;
return !Broken;
}
@@ -159,7 +206,6 @@ public:
bool verify(const Module &M) {
this->M = &M;
Context = &M.getContext();
- Finder.reset();
Broken = false;
// Scan through, checking all of the external function's linkage now...
@@ -187,13 +233,6 @@ public:
visitModuleFlags(M);
visitModuleIdents(M);
- if (!DisableDebugInfoVerifier) {
- Finder.reset();
- Finder.processModule(M);
- // Verify Debug Info.
- verifyDebugInfo();
- }
-
return !Broken;
}
@@ -262,6 +301,7 @@ private:
void visitLandingPadInst(LandingPadInst &LPI);
void VerifyCallSite(CallSite CS);
+ void verifyMustTailCall(CallInst &CI);
bool PerformTypeCheck(Intrinsic::ID ID, Function *F, Type *Ty, int VT,
unsigned ArgNo, std::string &Suffix);
bool VerifyIntrinsicType(Type *Ty, ArrayRef<Intrinsic::IITDescriptor> &Infos,
@@ -278,56 +318,21 @@ private:
void VerifyBitcastType(const Value *V, Type *DestTy, Type *SrcTy);
void VerifyConstantExprBitcastType(const ConstantExpr *CE);
+};
+class DebugInfoVerifier : public VerifierSupport {
+public:
+ explicit DebugInfoVerifier(raw_ostream &OS = dbgs()) : VerifierSupport(OS) {}
- void verifyDebugInfo();
-
- void WriteValue(const Value *V) {
- if (!V)
- return;
- if (isa<Instruction>(V)) {
- OS << *V << '\n';
- } else {
- V->printAsOperand(OS, true, M);
- OS << '\n';
- }
- }
-
- void WriteType(Type *T) {
- if (!T)
- return;
- OS << ' ' << *T;
- }
-
- // CheckFailed - A check failed, so print out the condition and the message
- // that failed. This provides a nice place to put a breakpoint if you want
- // to see why something is not correct.
- void CheckFailed(const Twine &Message, const Value *V1 = 0,
- const Value *V2 = 0, const Value *V3 = 0,
- const Value *V4 = 0) {
- OS << Message.str() << "\n";
- WriteValue(V1);
- WriteValue(V2);
- WriteValue(V3);
- WriteValue(V4);
- Broken = true;
- }
-
- void CheckFailed(const Twine &Message, const Value *V1, Type *T2,
- const Value *V3 = 0) {
- OS << Message.str() << "\n";
- WriteValue(V1);
- WriteType(T2);
- WriteValue(V3);
- Broken = true;
+ bool verify(const Module &M) {
+ this->M = &M;
+ verifyDebugInfo();
+ return !Broken;
}
- void CheckFailed(const Twine &Message, Type *T1, Type *T2 = 0, Type *T3 = 0) {
- OS << Message.str() << "\n";
- WriteType(T1);
- WriteType(T2);
- WriteType(T3);
- Broken = true;
- }
+private:
+ void verifyDebugInfo();
+ void processInstructions(DebugInfoFinder &Finder);
+ void processCallInst(DebugInfoFinder &Finder, const CallInst &CI);
};
} // End anonymous namespace
@@ -345,18 +350,14 @@ private:
void Verifier::visit(Instruction &I) {
for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i)
- Assert1(I.getOperand(i) != 0, "Operand is null", &I);
+ Assert1(I.getOperand(i) != nullptr, "Operand is null", &I);
InstVisitor<Verifier>::visit(I);
}
void Verifier::visitGlobalValue(const GlobalValue &GV) {
- Assert1(!GV.isDeclaration() ||
- GV.isMaterializable() ||
- GV.hasExternalLinkage() ||
- GV.hasExternalWeakLinkage() ||
- (isa<GlobalAlias>(GV) &&
- (GV.hasLocalLinkage() || GV.hasWeakLinkage())),
+ Assert1(!GV.isDeclaration() || GV.isMaterializable() ||
+ GV.hasExternalLinkage() || GV.hasExternalWeakLinkage(),
"Global is external, but doesn't have external or weak linkage!",
&GV);
@@ -395,14 +396,22 @@ void Verifier::visitGlobalVariable(const GlobalVariable &GV) {
"invalid linkage for intrinsic global variable", &GV);
// Don't worry about emitting an error for it not being an array,
// visitGlobalValue will complain on appending non-array.
- if (ArrayType *ATy = dyn_cast<ArrayType>(GV.getType())) {
+ if (ArrayType *ATy = dyn_cast<ArrayType>(GV.getType()->getElementType())) {
StructType *STy = dyn_cast<StructType>(ATy->getElementType());
PointerType *FuncPtrTy =
FunctionType::get(Type::getVoidTy(*Context), false)->getPointerTo();
- Assert1(STy && STy->getNumElements() == 2 &&
+ // FIXME: Reject the 2-field form in LLVM 4.0.
+ Assert1(STy && (STy->getNumElements() == 2 ||
+ STy->getNumElements() == 3) &&
STy->getTypeAtIndex(0u)->isIntegerTy(32) &&
STy->getTypeAtIndex(1) == FuncPtrTy,
"wrong type for intrinsic global variable", &GV);
+ if (STy->getNumElements() == 3) {
+ Type *ETy = STy->getTypeAtIndex(2);
+ Assert1(ETy->isPointerTy() &&
+ cast<PointerType>(ETy)->getElementType()->isIntegerTy(8),
+ "wrong type for intrinsic global variable", &GV);
+ }
}
}
@@ -472,11 +481,7 @@ void Verifier::visitGlobalAlias(const GlobalAlias &GA) {
"Alias should have external or external weak linkage!", &GA);
Assert1(GA.getAliasee(),
"Aliasee cannot be NULL!", &GA);
- Assert1(GA.getType() == GA.getAliasee()->getType(),
- "Alias and aliasee types should match!", &GA);
Assert1(!GA.hasUnnamedAddr(), "Alias cannot have unnamed_addr!", &GA);
- Assert1(!GA.hasSection(), "Alias cannot have a section!", &GA);
- Assert1(!GA.getAlignment(), "Alias connot have an alignment", &GA);
const Constant *Aliasee = GA.getAliasee();
const GlobalValue *GV = dyn_cast<GlobalValue>(Aliasee);
@@ -492,14 +497,7 @@ void Verifier::visitGlobalAlias(const GlobalAlias &GA) {
"addrspacecast of GlobalValue",
&GA);
- if (CE->getOpcode() == Instruction::BitCast) {
- unsigned SrcAS = GV->getType()->getPointerAddressSpace();
- unsigned DstAS = CE->getType()->getPointerAddressSpace();
-
- Assert1(SrcAS == DstAS,
- "Alias bitcasts cannot be between different address spaces",
- &GA);
- }
+ VerifyConstantExprBitcastType(CE);
}
Assert1(!GV->isDeclaration(), "Alias must point to a definition", &GA);
if (const GlobalAlias *GAAliasee = dyn_cast<GlobalAlias>(GV)) {
@@ -507,10 +505,6 @@ void Verifier::visitGlobalAlias(const GlobalAlias &GA) {
&GA);
}
- const GlobalValue *AG = GA.getAliasedGlobal();
- Assert1(AG, "Aliasing chain should end with function or global variable",
- &GA);
-
visitGlobalValue(GA);
}
@@ -522,7 +516,7 @@ void Verifier::visitNamedMDNode(const NamedMDNode &NMD) {
Assert1(!MD->isFunctionLocal(),
"Named metadata operand cannot be function local!", MD);
- visitMDNode(*MD, 0);
+ visitMDNode(*MD, nullptr);
}
}
@@ -548,7 +542,7 @@ void Verifier::visitMDNode(MDNode &MD, Function *F) {
// If this was an instruction, bb, or argument, verify that it is in the
// function that we expect.
- Function *ActualF = 0;
+ Function *ActualF = nullptr;
if (Instruction *I = dyn_cast<Instruction>(Op))
ActualF = I->getParent()->getParent();
else if (BasicBlock *BB = dyn_cast<BasicBlock>(Op))
@@ -821,6 +815,7 @@ void Verifier::VerifyFunctionAttrs(FunctionType *FT, AttributeSet Attrs,
bool SawNest = false;
bool SawReturned = false;
+ bool SawSRet = false;
for (unsigned i = 0, e = Attrs.getNumSlots(); i != e; ++i) {
unsigned Idx = Attrs.getSlotIndex(i);
@@ -851,8 +846,12 @@ void Verifier::VerifyFunctionAttrs(FunctionType *FT, AttributeSet Attrs,
SawReturned = true;
}
- if (Attrs.hasAttribute(Idx, Attribute::StructRet))
- Assert1(Idx == 1, "Attribute sret is not on first parameter!", V);
+ if (Attrs.hasAttribute(Idx, Attribute::StructRet)) {
+ Assert1(!SawSRet, "Cannot have multiple 'sret' parameters!", V);
+ Assert1(Idx == 1 || Idx == 2,
+ "Attribute 'sret' is not on first or second parameter!", V);
+ SawSRet = true;
+ }
if (Attrs.hasAttribute(Idx, Attribute::InAlloca)) {
Assert1(Idx == FT->getNumParams(),
@@ -1489,6 +1488,16 @@ void Verifier::VerifyCallSite(CallSite CS) {
// Verify call attributes.
VerifyFunctionAttrs(FTy, Attrs, I);
+ // Conservatively check the inalloca argument.
+ // We have a bug if we can find that there is an underlying alloca without
+ // inalloca.
+ if (CS.hasInAllocaArgument()) {
+ Value *InAllocaArg = CS.getArgument(FTy->getNumParams() - 1);
+ if (auto AI = dyn_cast<AllocaInst>(InAllocaArg->stripInBoundsOffsets()))
+ Assert2(AI->isUsedWithInAlloca(),
+ "inalloca argument for call has mismatched alloca", AI, I);
+ }
+
if (FTy->isVarArg()) {
// FIXME? is 'nest' even legal here?
bool SawNest = false;
@@ -1530,7 +1539,7 @@ void Verifier::VerifyCallSite(CallSite CS) {
}
// Verify that there's no metadata unless it's a direct call to an intrinsic.
- if (CS.getCalledFunction() == 0 ||
+ if (CS.getCalledFunction() == nullptr ||
!CS.getCalledFunction()->getName().startswith("llvm.")) {
for (FunctionType::param_iterator PI = FTy->param_begin(),
PE = FTy->param_end(); PI != PE; ++PI)
@@ -1541,9 +1550,102 @@ void Verifier::VerifyCallSite(CallSite CS) {
visitInstruction(*I);
}
+/// Two types are "congruent" if they are identical, or if they are both pointer
+/// types with different pointee types and the same address space.
+static bool isTypeCongruent(Type *L, Type *R) {
+ if (L == R)
+ return true;
+ PointerType *PL = dyn_cast<PointerType>(L);
+ PointerType *PR = dyn_cast<PointerType>(R);
+ if (!PL || !PR)
+ return false;
+ return PL->getAddressSpace() == PR->getAddressSpace();
+}
+
+static AttrBuilder getParameterABIAttributes(int I, AttributeSet Attrs) {
+ static const Attribute::AttrKind ABIAttrs[] = {
+ Attribute::StructRet, Attribute::ByVal, Attribute::InAlloca,
+ Attribute::InReg, Attribute::Returned};
+ AttrBuilder Copy;
+ for (auto AK : ABIAttrs) {
+ if (Attrs.hasAttribute(I + 1, AK))
+ Copy.addAttribute(AK);
+ }
+ if (Attrs.hasAttribute(I + 1, Attribute::Alignment))
+ Copy.addAlignmentAttr(Attrs.getParamAlignment(I + 1));
+ return Copy;
+}
+
+void Verifier::verifyMustTailCall(CallInst &CI) {
+ Assert1(!CI.isInlineAsm(), "cannot use musttail call with inline asm", &CI);
+
+ // - The caller and callee prototypes must match. Pointer types of
+ // parameters or return types may differ in pointee type, but not
+ // address space.
+ Function *F = CI.getParent()->getParent();
+ auto GetFnTy = [](Value *V) {
+ return cast<FunctionType>(
+ cast<PointerType>(V->getType())->getElementType());
+ };
+ FunctionType *CallerTy = GetFnTy(F);
+ FunctionType *CalleeTy = GetFnTy(CI.getCalledValue());
+ Assert1(CallerTy->getNumParams() == CalleeTy->getNumParams(),
+ "cannot guarantee tail call due to mismatched parameter counts", &CI);
+ Assert1(CallerTy->isVarArg() == CalleeTy->isVarArg(),
+ "cannot guarantee tail call due to mismatched varargs", &CI);
+ Assert1(isTypeCongruent(CallerTy->getReturnType(), CalleeTy->getReturnType()),
+ "cannot guarantee tail call due to mismatched return types", &CI);
+ for (int I = 0, E = CallerTy->getNumParams(); I != E; ++I) {
+ Assert1(
+ isTypeCongruent(CallerTy->getParamType(I), CalleeTy->getParamType(I)),
+ "cannot guarantee tail call due to mismatched parameter types", &CI);
+ }
+
+ // - The calling conventions of the caller and callee must match.
+ Assert1(F->getCallingConv() == CI.getCallingConv(),
+ "cannot guarantee tail call due to mismatched calling conv", &CI);
+
+ // - All ABI-impacting function attributes, such as sret, byval, inreg,
+ // returned, and inalloca, must match.
+ AttributeSet CallerAttrs = F->getAttributes();
+ AttributeSet CalleeAttrs = CI.getAttributes();
+ for (int I = 0, E = CallerTy->getNumParams(); I != E; ++I) {
+ AttrBuilder CallerABIAttrs = getParameterABIAttributes(I, CallerAttrs);
+ AttrBuilder CalleeABIAttrs = getParameterABIAttributes(I, CalleeAttrs);
+ Assert2(CallerABIAttrs == CalleeABIAttrs,
+ "cannot guarantee tail call due to mismatched ABI impacting "
+ "function attributes", &CI, CI.getOperand(I));
+ }
+
+ // - The call must immediately precede a :ref:`ret <i_ret>` instruction,
+ // or a pointer bitcast followed by a ret instruction.
+ // - The ret instruction must return the (possibly bitcasted) value
+ // produced by the call or void.
+ Value *RetVal = &CI;
+ Instruction *Next = CI.getNextNode();
+
+ // Handle the optional bitcast.
+ if (BitCastInst *BI = dyn_cast_or_null<BitCastInst>(Next)) {
+ Assert1(BI->getOperand(0) == RetVal,
+ "bitcast following musttail call must use the call", BI);
+ RetVal = BI;
+ Next = BI->getNextNode();
+ }
+
+ // Check the return.
+ ReturnInst *Ret = dyn_cast_or_null<ReturnInst>(Next);
+ Assert1(Ret, "musttail call must be precede a ret with an optional bitcast",
+ &CI);
+ Assert1(!Ret->getReturnValue() || Ret->getReturnValue() == RetVal,
+ "musttail call result must be returned", Ret);
+}
+
void Verifier::visitCallInst(CallInst &CI) {
VerifyCallSite(&CI);
+ if (CI.isMustTailCall())
+ verifyMustTailCall(CI);
+
if (Function *F = CI.getCalledFunction())
if (Intrinsic::ID ID = (Intrinsic::ID)F->getIntrinsicID())
visitIntrinsicFunctionCall(ID, CI);
@@ -1731,11 +1833,11 @@ void Verifier::visitLoadInst(LoadInst &LI) {
"Atomic load must specify explicit alignment", &LI);
if (!ElTy->isPointerTy()) {
Assert2(ElTy->isIntegerTy(),
- "atomic store operand must have integer type!",
+ "atomic load operand must have integer type!",
&LI, ElTy);
unsigned Size = ElTy->getPrimitiveSizeInBits();
Assert2(Size >= 8 && !(Size & (Size - 1)),
- "atomic store operand must be power-of-two byte-sized integer",
+ "atomic load operand must be power-of-two byte-sized integer",
&LI, ElTy);
}
} else {
@@ -2020,8 +2122,8 @@ void Verifier::visitInstruction(Instruction &I) {
// instruction, it is an error!
for (Use &U : I.uses()) {
if (Instruction *Used = dyn_cast<Instruction>(U.getUser()))
- Assert2(Used->getParent() != 0, "Instruction referencing instruction not"
- " embedded in a basic block!", &I, Used);
+ Assert2(Used->getParent() != nullptr, "Instruction referencing"
+ " instruction not embedded in a basic block!", &I, Used);
else {
CheckFailed("Use of instruction is not an instruction!", U);
return;
@@ -2029,7 +2131,7 @@ void Verifier::visitInstruction(Instruction &I) {
}
for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i) {
- Assert1(I.getOperand(i) != 0, "Instruction has null operand!", &I);
+ Assert1(I.getOperand(i) != nullptr, "Instruction has null operand!", &I);
// Check to make sure that only first-class-values are operands to
// instructions.
@@ -2103,11 +2205,6 @@ void Verifier::visitInstruction(Instruction &I) {
MDNode *MD = I.getMetadata(LLVMContext::MD_range);
Assert1(!MD || isa<LoadInst>(I), "Ranges are only for loads!", &I);
- if (!DisableDebugInfoVerifier) {
- MD = I.getMetadata(LLVMContext::MD_dbg);
- Finder.processLocation(*M, DILocation(MD));
- }
-
InstsInThisBlock.insert(&I);
}
@@ -2137,18 +2234,18 @@ bool Verifier::VerifyIntrinsicType(Type *Ty,
case IITDescriptor::Integer: return !Ty->isIntegerTy(D.Integer_Width);
case IITDescriptor::Vector: {
VectorType *VT = dyn_cast<VectorType>(Ty);
- return VT == 0 || VT->getNumElements() != D.Vector_Width ||
+ return !VT || VT->getNumElements() != D.Vector_Width ||
VerifyIntrinsicType(VT->getElementType(), Infos, ArgTys);
}
case IITDescriptor::Pointer: {
PointerType *PT = dyn_cast<PointerType>(Ty);
- return PT == 0 || PT->getAddressSpace() != D.Pointer_AddressSpace ||
+ return !PT || PT->getAddressSpace() != D.Pointer_AddressSpace ||
VerifyIntrinsicType(PT->getElementType(), Infos, ArgTys);
}
case IITDescriptor::Struct: {
StructType *ST = dyn_cast<StructType>(Ty);
- if (ST == 0 || ST->getNumElements() != D.Struct_NumElements)
+ if (!ST || ST->getNumElements() != D.Struct_NumElements)
return true;
for (unsigned i = 0, e = D.Struct_NumElements; i != e; ++i)
@@ -2307,17 +2404,7 @@ void Verifier::visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI) {
MDNode *MD = cast<MDNode>(CI.getArgOperand(0));
Assert1(MD->getNumOperands() == 1,
"invalid llvm.dbg.declare intrinsic call 2", &CI);
- if (!DisableDebugInfoVerifier)
- Finder.processDeclare(*M, cast<DbgDeclareInst>(&CI));
} break;
- case Intrinsic::dbg_value: { //llvm.dbg.value
- if (!DisableDebugInfoVerifier) {
- Assert1(CI.getArgOperand(0) && isa<MDNode>(CI.getArgOperand(0)),
- "invalid llvm.dbg.value intrinsic call 1", &CI);
- Finder.processValue(*M, cast<DbgValueInst>(&CI));
- }
- break;
- }
case Intrinsic::memcpy:
case Intrinsic::memmove:
case Intrinsic::memset:
@@ -2379,25 +2466,58 @@ void Verifier::visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI) {
}
}
-void Verifier::verifyDebugInfo() {
+void DebugInfoVerifier::verifyDebugInfo() {
+ if (!VerifyDebugInfo)
+ return;
+
+ DebugInfoFinder Finder;
+ Finder.processModule(*M);
+ processInstructions(Finder);
+
// Verify Debug Info.
- if (!DisableDebugInfoVerifier) {
- for (DICompileUnit CU : Finder.compile_units()) {
- Assert1(CU.Verify(), "DICompileUnit does not Verify!", CU);
- }
- for (DISubprogram S : Finder.subprograms()) {
- Assert1(S.Verify(), "DISubprogram does not Verify!", S);
- }
- for (DIGlobalVariable GV : Finder.global_variables()) {
- Assert1(GV.Verify(), "DIGlobalVariable does not Verify!", GV);
- }
- for (DIType T : Finder.types()) {
- Assert1(T.Verify(), "DIType does not Verify!", T);
- }
- for (DIScope S : Finder.scopes()) {
- Assert1(S.Verify(), "DIScope does not Verify!", S);
- }
+ //
+ // NOTE: The loud braces are necessary for MSVC compatibility.
+ for (DICompileUnit CU : Finder.compile_units()) {
+ Assert1(CU.Verify(), "DICompileUnit does not Verify!", CU);
}
+ for (DISubprogram S : Finder.subprograms()) {
+ Assert1(S.Verify(), "DISubprogram does not Verify!", S);
+ }
+ for (DIGlobalVariable GV : Finder.global_variables()) {
+ Assert1(GV.Verify(), "DIGlobalVariable does not Verify!", GV);
+ }
+ for (DIType T : Finder.types()) {
+ Assert1(T.Verify(), "DIType does not Verify!", T);
+ }
+ for (DIScope S : Finder.scopes()) {
+ Assert1(S.Verify(), "DIScope does not Verify!", S);
+ }
+}
+
+void DebugInfoVerifier::processInstructions(DebugInfoFinder &Finder) {
+ for (const Function &F : *M)
+ for (auto I = inst_begin(&F), E = inst_end(&F); I != E; ++I) {
+ if (MDNode *MD = I->getMetadata(LLVMContext::MD_dbg))
+ Finder.processLocation(*M, DILocation(MD));
+ if (const CallInst *CI = dyn_cast<CallInst>(&*I))
+ processCallInst(Finder, *CI);
+ }
+}
+
+void DebugInfoVerifier::processCallInst(DebugInfoFinder &Finder,
+ const CallInst &CI) {
+ if (Function *F = CI.getCalledFunction())
+ if (Intrinsic::ID ID = (Intrinsic::ID)F->getIntrinsicID())
+ switch (ID) {
+ case Intrinsic::dbg_declare:
+ Finder.processDeclare(*M, cast<DbgDeclareInst>(&CI));
+ break;
+ case Intrinsic::dbg_value:
+ Finder.processValue(*M, cast<DbgValueInst>(&CI));
+ break;
+ default:
+ break;
+ }
}
//===----------------------------------------------------------------------===//
@@ -2427,7 +2547,8 @@ bool llvm::verifyModule(const Module &M, raw_ostream *OS) {
// Note that this function's return value is inverted from what you would
// expect of a function called "verify".
- return !V.verify(M) || Broken;
+ DebugInfoVerifier DIV(OS ? *OS : NullStr);
+ return !V.verify(M) || !DIV.verify(M) || Broken;
}
namespace {
@@ -2463,15 +2584,48 @@ struct VerifierLegacyPass : public FunctionPass {
AU.setPreservesAll();
}
};
+struct DebugInfoVerifierLegacyPass : public ModulePass {
+ static char ID;
+
+ DebugInfoVerifier V;
+ bool FatalErrors;
+
+ DebugInfoVerifierLegacyPass() : ModulePass(ID), FatalErrors(true) {
+ initializeDebugInfoVerifierLegacyPassPass(*PassRegistry::getPassRegistry());
+ }
+ explicit DebugInfoVerifierLegacyPass(bool FatalErrors)
+ : ModulePass(ID), V(dbgs()), FatalErrors(FatalErrors) {
+ initializeDebugInfoVerifierLegacyPassPass(*PassRegistry::getPassRegistry());
+ }
+
+ bool runOnModule(Module &M) override {
+ if (!V.verify(M) && FatalErrors)
+ report_fatal_error("Broken debug info found, compilation aborted!");
+
+ return false;
+ }
+
+ void getAnalysisUsage(AnalysisUsage &AU) const override {
+ AU.setPreservesAll();
+ }
+};
}
char VerifierLegacyPass::ID = 0;
INITIALIZE_PASS(VerifierLegacyPass, "verify", "Module Verifier", false, false)
+char DebugInfoVerifierLegacyPass::ID = 0;
+INITIALIZE_PASS(DebugInfoVerifierLegacyPass, "verify-di", "Debug Info Verifier",
+ false, false)
+
FunctionPass *llvm::createVerifierPass(bool FatalErrors) {
return new VerifierLegacyPass(FatalErrors);
}
+ModulePass *llvm::createDebugInfoVerifierPass(bool FatalErrors) {
+ return new DebugInfoVerifierLegacyPass(FatalErrors);
+}
+
PreservedAnalyses VerifierPass::run(Module *M) {
if (verifyModule(*M, &dbgs()) && FatalErrors)
report_fatal_error("Broken module found, compilation aborted!");
generated by cgit v1.1 at 2024-05-18 03:34:22 +0000