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Don't allow declaring an external internal variable

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5781 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-04-16 18:13:57 +00:00
parent 8c7b0551f4
commit 1f862af473
1 changed files with 30 additions and 28 deletions
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58
lib/AsmParser/llvmAsmParser.y
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@ -522,6 +522,8 @@ static bool setValueName(Value *V, char *NameStr) {
EGV->setInitializer(GV->getInitializer());
if (GV->isConstant())
EGV->setConstant(true);
if (GV->hasInternalLinkage())
EGV->setInternalLinkage(true);
delete GV; // Destroy the duplicate!
return true; // They are equivalent!
@ -1154,10 +1156,10 @@ ConstPool : ConstPool OptAssign CONST ConstVal {
}
}
}
| ConstPool OptAssign OptInternal EXTERNAL GlobalType Types {
const Type *Ty = *$6;
| ConstPool OptAssign EXTERNAL GlobalType Types {
const Type *Ty = *$5;
// Global declarations appear in Constant Pool
GlobalVariable *GV = new GlobalVariable(Ty, $5, $3);
GlobalVariable *GV = new GlobalVariable(Ty, $4, false);
if (!setValueName(GV, $2)) { // If not redefining...
CurModule.CurrentModule->getGlobalList().push_back(GV);
int Slot = InsertValue(GV, CurModule.Values);
@ -1170,7 +1172,7 @@ ConstPool : ConstPool OptAssign CONST ConstVal {
(char*)GV->getName().c_str()));
}
}
delete $6;
delete $5;
}
| /* empty: end of list */ {
};
@ -1216,23 +1218,23 @@ ArgList : ArgListH {
FuncName : VAR_ID | STRINGCONSTANT;
FunctionHeaderH : OptInternal TypesV FuncName '(' ArgList ')' {
UnEscapeLexed($3);
string FunctionName($3);
FunctionHeaderH : TypesV FuncName '(' ArgList ')' {
UnEscapeLexed($2);
string FunctionName($2);
vector<const Type*> ParamTypeList;
if ($5) { // If there are arguments...
for (vector<pair<PATypeHolder*,char*> >::iterator I = $5->begin();
I != $5->end(); ++I)
if ($4) { // If there are arguments...
for (vector<pair<PATypeHolder*,char*> >::iterator I = $4->begin();
I != $4->end(); ++I)
ParamTypeList.push_back(I->first->get());
}
bool isVarArg = ParamTypeList.size() && ParamTypeList.back() == Type::VoidTy;
if (isVarArg) ParamTypeList.pop_back();
const FunctionType *FT = FunctionType::get(*$2, ParamTypeList, isVarArg);
const FunctionType *FT = FunctionType::get(*$1, ParamTypeList, isVarArg);
const PointerType *PFT = PointerType::get(FT);
delete $2;
delete $1;
Function *Fn = 0;
// Is the function already in symtab?
@ -1242,11 +1244,6 @@ FunctionHeaderH : OptInternal TypesV FuncName '(' ArgList ')' {
if (!CurMeth.isDeclare && !Fn->isExternal())
ThrowException("Redefinition of function '" + FunctionName + "'!");
// Make sure that we keep track of the internal marker, even if there was
// a previous "declare".
if ($1)
Fn->setInternalLinkage(true);
// If we found a preexisting function prototype, remove it from the
// module, so that we don't get spurious conflicts with global & local
// variables.
@ -1258,25 +1255,25 @@ FunctionHeaderH : OptInternal TypesV FuncName '(' ArgList ')' {
AI->setName("");
} else { // Not already defined?
Fn = new Function(FT, $1, FunctionName);
Fn = new Function(FT, false, FunctionName);
InsertValue(Fn, CurModule.Values);
CurModule.DeclareNewGlobalValue(Fn, ValID::create($3));
CurModule.DeclareNewGlobalValue(Fn, ValID::create($2));
}
free($3); // Free strdup'd memory!
free($2); // Free strdup'd memory!
CurMeth.FunctionStart(Fn);
// Add all of the arguments we parsed to the function...
if ($5) { // Is null if empty...
if ($4) { // Is null if empty...
if (isVarArg) { // Nuke the last entry
assert($5->back().first->get() == Type::VoidTy && $5->back().second == 0&&
assert($4->back().first->get() == Type::VoidTy && $4->back().second == 0&&
"Not a varargs marker!");
delete $5->back().first;
$5->pop_back(); // Delete the last entry
delete $4->back().first;
$4->pop_back(); // Delete the last entry
}
Function::aiterator ArgIt = Fn->abegin();
for (vector<pair<PATypeHolder*, char*> >::iterator I = $5->begin();
I != $5->end(); ++I, ++ArgIt) {
for (vector<pair<PATypeHolder*, char*> >::iterator I = $4->begin();
I != $4->end(); ++I, ++ArgIt) {
delete I->first; // Delete the typeholder...
if (setValueName(ArgIt, I->second)) // Insert arg into symtab...
@ -1285,15 +1282,20 @@ FunctionHeaderH : OptInternal TypesV FuncName '(' ArgList ')' {
InsertValue(ArgIt);
}
delete $5; // We're now done with the argument list
delete $4; // We're now done with the argument list
}
};
BEGIN : BEGINTOK | '{'; // Allow BEGIN or '{' to start a function
FunctionHeader : FunctionHeaderH BEGIN {
FunctionHeader : OptInternal FunctionHeaderH BEGIN {
$$ = CurMeth.CurrentFunction;
// Make sure that we keep track of the internal marker, even if there was
// a previous "declare".
if ($1)
$$->setInternalLinkage(true);
// Resolve circular types before we parse the body of the function.
ResolveTypes(CurMeth.LateResolveTypes);
};