/// getGlobalVariable - Look up the specified global variable in the module
/// symbol table. If it does not exist, return null. Note that this only
/// returns a global variable if it does not have internal linkage. The type
- /// argument should be the underlying type of the global, ie, it should not
+ /// argument should be the underlying type of the global, i.e., it should not
/// have the top-level PointerType, which represents the address of the
/// global.
///