Florian Hahn a73166a452 [LAA] Use DL to get element size for bound computation. ...

Currently LAA uses getScalarSizeInBits to compute the size of an element
when computing the end bound of an access.

This does not work as expected for pointers to pointers, because
getScalarSizeInBits will return 0 for pointer types.

By using DataLayout to get the size of the element we can also correctly
handle pointer element types.

Note the changes to the existing test, which seems to also use the wrong
offset for the end.

Fixes PR47751.

Reviewed By: anemet

Differential Revision: https://reviews.llvm.org/D88953

2020-10-07 18:57:07 +01:00

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