tree ab9b1cf7ba93de491166ef4b814f9b673ad8f2ae
parent 8f4e22ff9a17b750fef179ed1572e9bfd01ed9a2
author Dan Gohman <gohman@apple.com> 1248111810 +0000
committer Dan Gohman <gohman@apple.com> 1248111810 +0000

Revert the addition of hasNoPointerOverflow to GEPOperator.
Getelementptrs that are defined to wrap are virtually useless to
optimization, and getelementptrs that are undefined on any kind
of overflow are too restrictive -- it's difficult to ensure that
all intermediate addresses are within bounds. I'm going to take
a different approach.

Remove a few optimizations that depended on this flag.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76437 91177308-0d34-0410-b5e6-96231b3b80d8