[llvm] r301429 - Reverts commit r301424, r301425 and r301426

[Sanjoy Das via llvm-commits]

In any case, this isn't hard to fix.  There are a couple of other
pointers in ValueHandleBase that I can steal bits from.  I'm a bit
busy ATM, but I can to get to this in a few days.

On Wed, Apr 26, 2017 at 10:04 AM, Sanjoy Das
<sanjoy at playingwithpointers.com> wrote:
> Hi Davide,
>
> On Wed, Apr 26, 2017 at 9:59 AM, Davide Italiano <davide at freebsd.org> wrote:
>> On Wed, Apr 26, 2017 at 9:37 AM, Sanjoy Das via llvm-commits
>> <llvm-commits at lists.llvm.org> wrote:
>>> Author: sanjoy
>>> Date: Wed Apr 26 11:37:05 2017
>>> New Revision: 301429
>>>
>>> URL: http://llvm.org/viewvc/llvm-project?rev=301429&view=rev
>>> Log:
>>> Reverts commit r301424, r301425 and r301426
>>>
>>> Commits were:
>>>
>>> "Use WeakVH instead of WeakTrackingVH in AliasSetTracker's UnkownInsts"
>>> "Add a new WeakVH value handle; NFC"
>>> "Rename WeakVH to WeakTrackingVH; NFC"
>>>
>>> The changes assumed pointers are 8 byte aligned on all architectures.
>>>
>>
>> Sorry, I didn't think about this when reviewing.
>> Did any of the bots fail? Do you have a log?
>
> Example failure:
> http://lab.llvm.org:8011/builders/clang-cmake-thumbv7-a15/builds/6482/steps/build%20stage%201/logs/stdio