David Green d3ce069572 [AArch64][GlobalISel] Legalize ptr shuffle vector to s64 (#116013) ...

This converts all ptr element shuffle vectors to s64, so that the
existing vector legalization handling can lower them as needed. This
prevents a lot of fallbacks that currently try to generate things like
`<2 x ptr> G_EXT`.

I'm not sure if bitcast/inttoptr/ptrtoint is intended to be necessary
for vectors of pointers, but it uses buildCast for the casts, which now
generates a ptrtoint/inttoptr.

2024-11-23 17:00:51 +00:00

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