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[ARM] Fix incorrect handling of big-endian vmov.i64

Authored by john.brawn on Mar 16 2020, 10:28 AM.

Description

[ARM] Fix incorrect handling of big-endian vmov.i64

Currently when the target is big-endian vmov.i64 reverses the order of the two
words of the vector. This is correct only when the underlying element type is
32-bit, as actually what it should be doing is considering it a vector of the
underlying type and reversing the elements of that.

Differential Revision: https://reviews.llvm.org/D76515

Details

Committed
john.brawnApr 3 2020, 9:36 AM
Differential Revision
D76515: [ARM] Fix incorrect handling of big-endian vmov.i64
Parents
rGcd58fb632533: [ARM] Avoid pointless vrev of element-wise vmov
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