[PATCH] D123508: GlobalISel: Allow forming atomic/volatile G_ZEXTLOAD

[Matt Arsenault via Phabricator via llvm-commits]

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In D123508#3489330 <https://reviews.llvm.org/D123508#3489330>, @reames wrote:

> At a high level, I do very much think having atomic loads simply be normal loads with some atomic flags makes a lot of sense.

This is already the case for GlobalISel. I'm just extending to extending loads, rather than repeating the special case computeKnownBits hack the DAG uses (plus another poorly conceived target hook to report the atomic high bit behavior)


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https://reviews.llvm.org/D123508