D-Programming-Language/dmd — pull request #1493 by yebblies (2013-01-16 12:23:09+00:00)
Title: Fix Issue 9097 - Value range propagation to disable some array bound tests

Do not emit bounds check code if the index is statically known to be within bounds

http://d.puremagic.com/issues/show_bug.cgi?id=9097