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Split the basic block handling case out of getVal into getBBVal.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14805 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-07-14 01:33:11 +00:00
parent 144d9baf5e
commit 64116f980e
1 changed files with 40 additions and 34 deletions
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74
lib/AsmParser/llvmAsmParser.y
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@ -205,11 +205,6 @@ static int InsertValue(Value *V,
return List.size()-1;
}
// TODO: FIXME when Type are not const
static void InsertType(const Type *Ty, std::vector<PATypeHolder> &Types) {
Types.push_back(Ty);
}
static const Type *getTypeVal(const ValID &D, bool DoNotImprovise = false) {
switch (D.Type) {
case ValID::NumberVal: { // Is it a numbered definition?
@ -367,24 +362,23 @@ static Value *getValNonImprovising(const Type *Ty, const ValID &D) {
// defined later, all uses of the placeholder variable are replaced with the
// real thing.
//
static Value *getVal(const Type *Ty, const ValID &D) {
static Value *getVal(const Type *Ty, const ValID &ID) {
if (Ty == Type::LabelTy)
ThrowException("Cannot use a basic block here");
// See if the value has already been defined...
Value *V = getValNonImprovising(Ty, D);
// See if the value has already been defined.
Value *V = getValNonImprovising(Ty, ID);
if (V) return V;
// If we reached here, we referenced either a symbol that we don't know about
// or an id number that hasn't been read yet. We may be referencing something
// forward, so just create an entry to be resolved later and get to it...
//
if (Ty == Type::LabelTy)
V = new BasicBlock();
else
V = new Argument(Ty);
V = new Argument(Ty);
// Remember where this forward reference came from. FIXME, shouldn't we try
// to recycle these things??
CurModule.PlaceHolderInfo.insert(std::make_pair(V, std::make_pair(D,
CurModule.PlaceHolderInfo.insert(std::make_pair(V, std::make_pair(ID,
llvmAsmlineno)));
if (inFunctionScope())
@ -394,6 +388,23 @@ static Value *getVal(const Type *Ty, const ValID &D) {
return V;
}
static BasicBlock *getBBVal(const ValID &ID) {
assert(inFunctionScope() && "Can't get basic block at global scope!");
// See if the value has already been defined.
Value *V = getValNonImprovising(Type::LabelTy, ID);
if (V) return cast<BasicBlock>(V);
BasicBlock *BB = new BasicBlock();
// Remember where this forward reference came from. FIXME, shouldn't we try
// to recycle these things??
CurModule.PlaceHolderInfo.insert(std::make_pair(BB, std::make_pair(ID,
llvmAsmlineno)));
InsertValue(BB, CurFun.LateResolveValues);
return BB;
}
//===----------------------------------------------------------------------===//
// Code to handle forward references in instructions
@ -1378,7 +1389,10 @@ ConstPool : ConstPool OptAssign CONST ConstVal {
if (!setTypeName(*$4, $2) && !$2) {
// If this is a named type that is not a redefinition, add it to the slot
// table.
InsertType(*$4, inFunctionScope() ? CurFun.Types : CurModule.Types);
if (inFunctionScope())
CurFun.Types.push_back(*$4);
else
CurModule.Types.push_back(*$4);
}
delete $4;
@ -1667,16 +1681,13 @@ BBTerminatorInst : RET ResolvedVal { // Return with a result...
$$ = new ReturnInst();
}
| BR LABEL ValueRef { // Unconditional Branch...
$$ = new BranchInst(cast<BasicBlock>(getVal(Type::LabelTy, $3)));
$$ = new BranchInst(getBBVal($3));
} // Conditional Branch...
| BR BOOL ValueRef ',' LABEL ValueRef ',' LABEL ValueRef {
$$ = new BranchInst(cast<BasicBlock>(getVal(Type::LabelTy, $6)),
cast<BasicBlock>(getVal(Type::LabelTy, $9)),
getVal(Type::BoolTy, $3));
$$ = new BranchInst(getBBVal($6), getBBVal($9), getVal(Type::BoolTy, $3));
}
| SWITCH IntType ValueRef ',' LABEL ValueRef '[' JumpTable ']' {
SwitchInst *S = new SwitchInst(getVal($2, $3),
cast<BasicBlock>(getVal(Type::LabelTy, $6)));
SwitchInst *S = new SwitchInst(getVal($2, $3), getBBVal($6));
$$ = S;
std::vector<std::pair<Constant*,BasicBlock*> >::iterator I = $8->begin(),
@ -1686,12 +1697,11 @@ BBTerminatorInst : RET ResolvedVal { // Return with a result...
delete $8;
}
| SWITCH IntType ValueRef ',' LABEL ValueRef '[' ']' {
SwitchInst *S = new SwitchInst(getVal($2, $3),
cast<BasicBlock>(getVal(Type::LabelTy, $6)));
SwitchInst *S = new SwitchInst(getVal($2, $3), getBBVal($6));
$$ = S;
}
| INVOKE TypesV ValueRef '(' ValueRefListE ')' TO ResolvedVal
UNWIND ResolvedVal {
| INVOKE TypesV ValueRef '(' ValueRefListE ')' TO LABEL ValueRef
UNWIND LABEL ValueRef {
const PointerType *PFTy;
const FunctionType *Ty;
@ -1714,11 +1724,8 @@ BBTerminatorInst : RET ResolvedVal { // Return with a result...
Value *V = getVal(PFTy, $3); // Get the function we're calling...
BasicBlock *Normal = dyn_cast<BasicBlock>($8);
BasicBlock *Except = dyn_cast<BasicBlock>($10);
if (Normal == 0 || Except == 0)
ThrowException("Invoke instruction without label destinations!");
BasicBlock *Normal = getBBVal($9);
BasicBlock *Except = getBBVal($12);
// Create the call node...
if (!$5) { // Has no arguments?
@ -1756,7 +1763,7 @@ JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
if (V == 0)
ThrowException("May only switch on a constant pool value!");
$$->push_back(std::make_pair(V, cast<BasicBlock>(getVal($5, $6))));
$$->push_back(std::make_pair(V, getBBVal($6)));
}
| IntType ConstValueRef ',' LABEL ValueRef {
$$ = new std::vector<std::pair<Constant*, BasicBlock*> >();
@ -1765,7 +1772,7 @@ JumpTable : JumpTable IntType ConstValueRef ',' LABEL ValueRef {
if (V == 0)
ThrowException("May only switch on a constant pool value!");
$$->push_back(std::make_pair(V, cast<BasicBlock>(getVal($4, $5))));
$$->push_back(std::make_pair(V, getBBVal($5)));
};
Inst : OptAssign InstVal {
@ -1777,14 +1784,13 @@ Inst : OptAssign InstVal {
PHIList : Types '[' ValueRef ',' ValueRef ']' { // Used for PHI nodes
$$ = new std::list<std::pair<Value*, BasicBlock*> >();
$$->push_back(std::make_pair(getVal(*$1, $3),
cast<BasicBlock>(getVal(Type::LabelTy, $5))));
$$->push_back(std::make_pair(getVal(*$1, $3), getBBVal($5)));
delete $1;
}
| PHIList ',' '[' ValueRef ',' ValueRef ']' {
$$ = $1;
$1->push_back(std::make_pair(getVal($1->front().first->getType(), $4),
cast<BasicBlock>(getVal(Type::LabelTy, $6))));
getBBVal($6)));
};