PS llvm: fix PTA after some weird LLVM optimizations
PS llvm: fix PTA after some weird LLVM optimizations

LLVM sometimes optimize the code such that it basically
does ptrtoint using bitcast. For such cases we were missing the
nodes in PS

Signed-off-by: Marek Chalupa <a05df156a69ad59faa9af9b666ef78009594c145@gmail.com>

mchalupa/dg,mchalupa/dg,mchalupa/dg,mchalupa/dg