llvm-project/llvm/test/Feature/globalvars.ll

%MyVar     = uninitialized global int
%MyIntList = uninitialized global { \2 *, int }
             uninitialized global int      ; int*:0

%AConst    = constant int 123

implementation

int "foo"(int %blah)
begin
	store int 5, int *%MyVar
	store int 12, { \2 *, int } * %MyIntList, ubyte 1
	ret int %blah
end