// Returns true if base value is undef, or if all members are undef
bool AreAllUndefined(const llvm::Value* value)
{
if (IsUndef(value))
return true;
// Assume a fully undef aggregate satisfies "IsUndef" at the highest level
return false;
// If a fully undef aggregate ever needs to be walked to to verify that,
// use the following code.
//if (const llvm::User* user = llvm::dyn_cast<llvm::User>(value)) {
// switch(user->getType()->getTypeID()) {
// case llvm::Type::VectorTyID:
// case llvm::Type::ArrayTyID:
// case llvm::Type::StructTyID:
// if (user->getNumOperands() > 0) {
// for (llvm::User::const_op_iterator i = user->op_begin(), e = user->op_end(); i != e; ++i) {
// if (! AreAllUndefined(*i))
// return false;
// }
// }
// }
//}
//return true;
}
String CppMacro::ToString() const
{
String r;
if(param.GetCount()) {
String h = param;
h.Replace(".", "...");
r << "(" << h << ")";
}
if(IsUndef())
r << " #undef";
else
r << ' ' << body;
return r;
}
// Returns false if base value is undef, or if any member is undef
bool AreAllDefined(const llvm::Value* value)
{
if (IsUndef(value))
return false;
if (const llvm::User* user = llvm::dyn_cast<llvm::User>(value)) {
switch(user->getType()->getTypeID()) {
case llvm::Type::VectorTyID:
case llvm::Type::ArrayTyID:
case llvm::Type::StructTyID:
if (user->getNumOperands() > 0) {
for (llvm::User::const_op_iterator i = user->op_begin(), e = user->op_end(); i != e; ++i) {
if (! AreAllDefined(*i))
return false;
}
}
}
}
return true;
}
