[SelectionDAGBuilder] Use ::precise LocationSizes; NFC
[SelectionDAGBuilder] Use ::precise LocationSizes; NFC

More migration so we can disable the implicit int -> LocationSize
conversion.

All of these are either scatter/gather'ed vector instructions, or direct
loads. Hence, they're all precise.

Perhaps if we see way more getTypeStoreSize calls, we can make a
getTypeStoreLocationSize (or similar) as a wrapper that applies this
::precise. Doesn't appear that it's a good idea to make getTypeStoreSize
return a LocationSize itself, however.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@350042 91177308-0d34-0410-b5e6-96231b3b80d8

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