- PR55137 fold reassociation fix
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00636.html
(alternatively also retry with unsigned atype if the reassociation
would fail otherwise)
- PR43631 fix up var-tracking notes in between bbs
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01201.html
- PR55331 substitute_and_fold fix for memmove folding to nothing
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01302.html
- convert asan to use builtins instead of building fndecls on the fly
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01875.html
- PR55380 tiny libcpp performance fix + hack for asan/valgrind
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg01973.html
Jakub
