Actually, some: "Type-based alias analysis now disambiguates accesses to different pointers. This improves precision of the alias oracle by about 20-30% on high

Actually, some: "Type-based alias analysis now disambiguates accesses to different pointers. This improves precision of the alias oracle by about 20-30% on higher-level C++ programs. Programs doing invalid type punning of pointer types may now need -fno-strict-aliasing to work correctly."