Amara Emerson 19f4d68252 [GlobalISel] Fix store merging incorrectly classifying an unknown index expr as 0. (#90375) ...

During analysis, we incorrectly leave the offset part of an address info
struct
as zero, when in actual fact we failed to decompose it into base +
offset.
This results in incorrectly assuming that the address is adjacent to
another store
addr. To fix this we wrap the offset in an optional<> so we can
distinguish between
real zero and unknown.

Fixes issue #90242

2024-04-30 14:42:14 -07:00

35 KiB

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