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Remove the "metadata*" type and simplify the code it complicated. This was only

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used to support GlobalVariables storing MDNodes, back when they were derived
from Constant before the introduction of NamedMDNode, but never removed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82943 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2009-09-27 23:27:42 +00:00
parent ae03af2663
commit c261df9fab
3 changed files with 22 additions and 95 deletions
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8
docs/LangRef.html
View File

@ -1489,9 +1489,9 @@ Classifications</a> </div>
<div class="doc_text">
<h5>Overview:</h5>
<p>The metadata type represents embedded metadata. The only derived type that
may contain metadata is <tt>metadata*</tt> or a function type that returns or
takes metadata typed parameters, but not pointer to metadata types.</p>
<p>The metadata type represents embedded metadata. No derived types may be
created from metadata except for <a href="#t_function">function</a>
arguments.
<h5>Syntax:</h5>
<pre>
@ -1601,7 +1601,7 @@ Classifications</a> </div>
Variable argument functions can access their arguments with
the <a href="#int_varargs">variable argument handling intrinsic</a>
functions. '<tt>&lt;returntype&gt;</tt>' is a any type except
<a href="#t_label">label</a> and <a href="#t_metadata">metadata</a>.</p>
<a href="#t_label">label</a>.</p>
<h5>Examples:</h5>
<table class="layout">

51
lib/VMCore/Type.cpp
View File

@ -365,9 +365,6 @@ const IntegerType *Type::getInt64Ty(LLVMContext &C) {
/// isValidReturnType - Return true if the specified type is valid as a return
/// type.
bool FunctionType::isValidReturnType(const Type *RetTy) {
if (const PointerType *PTy = dyn_cast<PointerType>(RetTy))
return PTy->getElementType()->getTypeID() != MetadataTyID;
return RetTy->getTypeID() != LabelTyID &&
RetTy->getTypeID() != MetadataTyID;
}
@ -375,12 +372,7 @@ bool FunctionType::isValidReturnType(const Type *RetTy) {
/// isValidArgumentType - Return true if the specified type is valid as an
/// argument type.
bool FunctionType::isValidArgumentType(const Type *ArgTy) {
if ((!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy)) ||
(isa<PointerType>(ArgTy) &&
cast<PointerType>(ArgTy)->getElementType()->getTypeID() == MetadataTyID))
return false;
return true;
return ArgTy->isFirstClassType() || isa<OpaqueType>(ArgTy);
}
FunctionType::FunctionType(const Type *Result,
@ -817,15 +809,8 @@ ArrayType *ArrayType::get(const Type *ElementType, uint64_t NumElements) {
}
bool ArrayType::isValidElementType(const Type *ElemTy) {
if (ElemTy->getTypeID() == VoidTyID || ElemTy->getTypeID() == LabelTyID ||
ElemTy->getTypeID() == MetadataTyID || isa<FunctionType>(ElemTy))
return false;
if (const PointerType *PTy = dyn_cast<PointerType>(ElemTy))
if (PTy->getElementType()->getTypeID() == MetadataTyID)
return false;
return true;
return ElemTy->getTypeID() != VoidTyID && ElemTy->getTypeID() != LabelTyID &&
ElemTy->getTypeID() != MetadataTyID && !isa<FunctionType>(ElemTy);
}
VectorType *VectorType::get(const Type *ElementType, unsigned NumElements) {
@ -849,11 +834,8 @@ VectorType *VectorType::get(const Type *ElementType, unsigned NumElements) {
}
bool VectorType::isValidElementType(const Type *ElemTy) {
if (ElemTy->isInteger() || ElemTy->isFloatingPoint() ||
isa<OpaqueType>(ElemTy))
return true;
return false;
return ElemTy->isInteger() || ElemTy->isFloatingPoint() ||
isa<OpaqueType>(ElemTy);
}
//===----------------------------------------------------------------------===//
@ -896,15 +878,8 @@ StructType *StructType::get(LLVMContext &Context, const Type *type, ...) {
}
bool StructType::isValidElementType(const Type *ElemTy) {
if (ElemTy->getTypeID() == VoidTyID || ElemTy->getTypeID() == LabelTyID ||
ElemTy->getTypeID() == MetadataTyID || isa<FunctionType>(ElemTy))
return false;
if (const PointerType *PTy = dyn_cast<PointerType>(ElemTy))
if (PTy->getElementType()->getTypeID() == MetadataTyID)
return false;
return true;
return ElemTy->getTypeID() != VoidTyID && ElemTy->getTypeID() != LabelTyID &&
ElemTy->getTypeID() != MetadataTyID && !isa<FunctionType>(ElemTy);
}
@ -941,15 +916,9 @@ PointerType *Type::getPointerTo(unsigned addrs) const {
}
bool PointerType::isValidElementType(const Type *ElemTy) {
if (ElemTy->getTypeID() == VoidTyID ||
ElemTy->getTypeID() == LabelTyID)
return false;
if (const PointerType *PTy = dyn_cast<PointerType>(ElemTy))
if (PTy->getElementType()->getTypeID() == MetadataTyID)
return false;
return true;
return ElemTy->getTypeID() != VoidTyID &&
ElemTy->getTypeID() != LabelTyID &&
ElemTy->getTypeID() != MetadataTyID;
}

58
lib/VMCore/Verifier.cpp
View File

@ -447,28 +447,6 @@ void Verifier::visitGlobalVariable(GlobalVariable &GV) {
Assert1(!GV.isConstant(), "'common' global may not be marked constant!",
&GV);
}
// Verify that any metadata used in a global initializer points only to
// other globals.
if (MDNode *FirstNode = dyn_cast<MDNode>(GV.getInitializer())) {
SmallVector<const MDNode *, 4> NodesToAnalyze;
NodesToAnalyze.push_back(FirstNode);
while (!NodesToAnalyze.empty()) {
const MDNode *N = NodesToAnalyze.back();
NodesToAnalyze.pop_back();
for (MDNode::const_elem_iterator I = N->elem_begin(),
E = N->elem_end(); I != E; ++I)
if (const Value *V = *I) {
if (const MDNode *Next = dyn_cast<MDNode>(V))
NodesToAnalyze.push_back(Next);
else
Assert3(isa<Constant>(V),
"reference to instruction from global metadata node",
&GV, N, V);
}
}
}
} else {
Assert1(GV.hasExternalLinkage() || GV.hasDLLImportLinkage() ||
GV.hasExternalWeakLinkage(),
@ -622,12 +600,12 @@ void Verifier::visitFunction(Function &F) {
"# formal arguments must match # of arguments for function type!",
&F, FT);
Assert1(F.getReturnType()->isFirstClassType() ||
F.getReturnType() == Type::getVoidTy(F.getContext()) ||
F.getReturnType()->getTypeID() == Type::VoidTyID ||
isa<StructType>(F.getReturnType()),
"Functions cannot return aggregate values!", &F);
Assert1(!F.hasStructRetAttr() ||
F.getReturnType() == Type::getVoidTy(F.getContext()),
F.getReturnType()->getTypeID() == Type::VoidTyID,
"Invalid struct return type!", &F);
const AttrListPtr &Attrs = F.getAttributes();
@ -654,9 +632,6 @@ void Verifier::visitFunction(Function &F) {
bool isLLVMdotName = F.getName().size() >= 5 &&
F.getName().substr(0, 5) == "llvm.";
if (!isLLVMdotName)
Assert1(F.getReturnType() != Type::getMetadataTy(F.getContext()),
"Function may not return metadata unless it's an intrinsic", &F);
// Check that the argument values match the function type for this function...
unsigned i = 0;
@ -763,7 +738,7 @@ void Verifier::visitTerminatorInst(TerminatorInst &I) {
void Verifier::visitReturnInst(ReturnInst &RI) {
Function *F = RI.getParent()->getParent();
unsigned N = RI.getNumOperands();
if (F->getReturnType() == Type::getVoidTy(RI.getContext()))
if (F->getReturnType()->getTypeID() == Type::VoidTyID)
Assert2(N == 0,
"Found return instr that returns non-void in Function of void "
"return type!", &RI, F->getReturnType());
@ -1126,8 +1101,6 @@ void Verifier::VerifyCallSite(CallSite CS) {
// Verify that there's no metadata unless it's a direct call to an intrinsic.
if (!CS.getCalledFunction() || CS.getCalledFunction()->getName().size() < 5 ||
CS.getCalledFunction()->getName().substr(0, 5) != "llvm.") {
Assert1(FTy->getReturnType() != Type::getMetadataTy(I->getContext()),
"Only intrinsics may return metadata", I);
for (FunctionType::param_iterator PI = FTy->param_begin(),
PE = FTy->param_end(); PI != PE; ++PI)
Assert1(PI->get() != Type::getMetadataTy(I->getContext()),
@ -1297,8 +1270,6 @@ void Verifier::visitLoadInst(LoadInst &LI) {
const Type *ElTy = PTy->getElementType();
Assert2(ElTy == LI.getType(),
"Load result type does not match pointer operand type!", &LI, ElTy);
Assert1(ElTy != Type::getMetadataTy(LI.getContext()),
"Can't load metadata!", &LI);
visitInstruction(LI);
}
@ -1309,8 +1280,6 @@ void Verifier::visitStoreInst(StoreInst &SI) {
Assert2(ElTy == SI.getOperand(0)->getType(),
"Stored value type does not match pointer operand type!",
&SI, ElTy);
Assert1(ElTy != Type::getMetadataTy(SI.getContext()),
"Can't store metadata!", &SI);
visitInstruction(SI);
}
@ -1365,22 +1334,16 @@ void Verifier::visitInstruction(Instruction &I) {
// Check that the return value of the instruction is either void or a legal
// value type.
Assert1(I.getType() == Type::getVoidTy(I.getContext()) ||
I.getType()->isFirstClassType()
|| ((isa<CallInst>(I) || isa<InvokeInst>(I))
&& isa<StructType>(I.getType())),
Assert1(I.getType()->getTypeID() == Type::VoidTyID ||
I.getType()->isFirstClassType(),
"Instruction returns a non-scalar type!", &I);
// Check that the instruction doesn't produce metadata or metadata*. Calls
// all already checked against the callee type.
Assert1(I.getType() != Type::getMetadataTy(I.getContext()) ||
// Check that the instruction doesn't produce metadata. Calls are already
// checked against the callee type.
Assert1(I.getType()->getTypeID() != Type::MetadataTyID ||
isa<CallInst>(I) || isa<InvokeInst>(I),
"Invalid use of metadata!", &I);
if (const PointerType *PTy = dyn_cast<PointerType>(I.getType()))
Assert1(PTy->getElementType() != Type::getMetadataTy(I.getContext()),
"Instructions may not produce pointer to metadata.", &I);
// Check that all uses of the instruction, if they are instructions
// themselves, actually have parent basic blocks. If the use is not an
// instruction, it is an error!
@ -1404,11 +1367,6 @@ void Verifier::visitInstruction(Instruction &I) {
Assert1(0, "Instruction operands must be first-class values!", &I);
}
if (const PointerType *PTy =
dyn_cast<PointerType>(I.getOperand(i)->getType()))
Assert1(PTy->getElementType() != Type::getMetadataTy(I.getContext()),
"Invalid use of metadata pointer.", &I);
if (Function *F = dyn_cast<Function>(I.getOperand(i))) {
// Check to make sure that the "address of" an intrinsic function is never
// taken.