strict alias rule

[hstk30-hw]

• https://gist.github.com/shafik/848ae25ee209f698763cffee272a58f8
• https://dbp-consulting.com/tutorials/StrictAliasing.html
• https://stackoverflow.com/questions/98650/what-is-the-strict-aliasing-rule
• https://stackoverflow.com/questions/98340/what-are-the-common-undefined-unspecified-behavior-for-c-that-you-run-into
• https://blog.llvm.org/2011/05/what-every-c-programmer-should-know.html

[hstk30-hw]

• BasicAliasAnalysis.cpp
• ScopedNoAliasAA.cpp
• TypeBasedAliasAnalysis.cpp