Andrew Trick aa8ceba833 Remove a bunch of old SCEVExpander FIXME's for preserving NoWrap. ...

The great thing about the SCEVAddRec No-Wrap flag (unlike nsw/nuw) is
that is can be preserved while normalizing (reassociating and
factoring).

The bad thing is that is can't be tranfered back to IR, which is one
of the reasons I don't like the concept of SCEVExpander.

Sorry, I can't think of a direct way to test this, which is why these
were FIXMEs for so long. I just think it's a good time to finally
clean it up.

llvm-svn: 186273

2013-07-14 03:10:08 +00:00

69 KiB

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