let substs = instance.substs;
// All these intrinsics take raw pointers, so if we access memory directly
// (as opposed to through a place), we have to remember to erase any tag
// that might still hang around!
let substs = instance.substs;
// All these intrinsics take raw pointers, so if we access memory directly
// (as opposed to through a place), we have to remember to erase any tag
// that might still hang around!