Nick Lewycky 15245953a5 Fix indenting, remove tabs. ...

Learn from sext and zext. The destination value falls within the range of the
source type.

Generalize properties regarding constant ints.

Get smarter about marking blocks as unreachable. If 1 >= 2 in order for this
block to execute, then it isn't reachable.

llvm-svn: 33889

2007-02-04 23:43:05 +00:00

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