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* Cull extraneous whitespace.Paul Phillips2013-09-181-1/+1
| | | | | | | | | | | | | | | | | | | | | One last flurry with the broom before I leave you slobs to code in your own filth. Eliminated all the trailing whitespace I could manage, with special prejudice reserved for the test cases which depended on the preservation of trailing whitespace. Was reminded I cannot figure out how to eliminate the trailing space on the "scala> " prompt in repl transcripts. At least reduced the number of such empty prompts by trimming transcript code on the way in. Routed ConsoleReporter's "printMessage" through a trailing whitespace stripping method which might help futureproof against the future of whitespace diseases. Deleted the up-to-40 lines of trailing whitespace found in various library files. It seems like only yesterday we performed whitespace surgery on the whole repo. Clearly it doesn't stick very well. I suggest it would work better to enforce a few requirements on the way in.
* Analyze constants to remove unnecessary branchesJames Iry2013-03-073-0/+37
This commit adds analysis and optimization of constants to remove unnecessary branches. It uses abstract interpretation to determine what constant(s) a particular stack slot or variable might or might not hold at a given spot and uses that knowledge to eliminate branches that cannot be taken. Its primary goal is null check removal, but it also works for other constants. Several tests are modified to include the new optimization phase. Two new tests are added. One verifies that branching still works as expected. The other verifies that branches are removed.