llvm dev - Jan 2019 - Question about global variable type

Hi,

Let's say, we want to insert a global variable to a module, that, we can
accomplish as shown in the below code snippet. However, if I compare the
original type with the type after the call to getOrInsertGlobal(), the two
pointers are different as shown. Is it a correct behavior? If so, what is
the right way to get the type of global variable so that it is same as
original type?

PS: I am using LLVM versoin 8

------------------
// Get type of global variable to be inserted
auto varType = IntegerType::get(M.getContext(), 32);
outs() << "varType = " << varType << "\n";


// Insert newly created variable to current module
auto globalVar = M.getOrInsertGlobal("myVar", varType);
outs() << "varType = " << globalVar->getType() <<
"\n";
------------------


------------------
varType = 0x5567b71a22b8
varType = 0x5567b71ce1b0
------------------

-- 
Thanks,
Mahesha
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On Tue, 22 Jan 2019 at 13:22, Mahesha S via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> auto globalVar = M.getOrInsertGlobal("myVar", varType);
Globals (as an instance of Value) have a type that's a pointer to the
allocated storage. So in this case globalVar->getType() is actually
"i32*" rather than i32. GlobalValue::getValueType will return the
underlying type.

You could use Type::dump to see this kind of thing more quickly in future.

Cheers.

Tim.