[analyzer] Start fixing modeling of bool based types

Authored by alexshap on Jul 10 2017, 5:30 PM.


[analyzer] Start fixing modeling of bool based types

This is a follow up for one of
the previous diffs https://reviews.llvm.org/D32328.
getTypeSize and with getIntWidth are not equivalent for bool
(see https://clang.llvm.org/doxygen/ASTContext_8cpp_source.html#l08444),
this causes a number of issues
(for instance, if APint X representing a bool is created
with the wrong bit width then X is not comparable against Min/Max
(because of the different bit width), that results in crashes
(triggered asserts) inside assume* methods),
for examples see the newly added test cases.

Test plan: make check-all

Differential revision: https://reviews.llvm.org/D35041

llvm-svn: 307604