git reset HEAD README
lab1 to lab2
solution to Lab1
Merge branch 'Lab2' of github.com:ameng929/MyTiger into Lab2
just test it by qiu xing
Conflicts:
	src/Tiger.java
	src/control/Control.java
qiu xing's solution for exercise of Lab2
add program method
delete bin directory
write PrettyPrintVisitor.java
add isField
complete Part A
fix PART A
finish Lab2
A brand-new backend.
Smali.jar
Lab3 merge.
Merge branch 'Lab3' of git@github.com:starqiu/tiger.git into Lab2

Conflicts:
	src/Tiger.java
	src/ast/Fac.java
	src/control/CommandLine.java
	src/control/Control.java
Add a new test code. Thanks for XuDi for his help.
Merge branch 'Lab3' into Lab4
Bug fix. Thanks XuDi for this bug report. This bug
was a typo.
Merge branch 'Lab3' into Lab4