Find redundant null-checks in java file

Usage

ruby <source>/check_file.rb file_to_check.java

Checker will print the file name and the line number of the redundant check.
E.g. Null check is always true: tests/Example2.java:7

ruby <source>/tests/run_tests.rb --glob "<source>/tests/*.java"

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
ir		ir
tests		tests
.gitignore		.gitignore
README.md		README.md
bytecode.csv		bytecode.csv
bytecode.rb		bytecode.rb
check_file.rb		check_file.rb
ir_builder_javap.rb		ir_builder_javap.rb
null_check_analysis.rb		null_check_analysis.rb
rpo.rb		rpo.rb