tree 94979aef53efaf1b869e9dffcce8d70d88ddebbe
parent d441d28083e2f9de5170f5a96a8e44a38d306c62
author Pierre van Houtryve <pierre.vanhoutryve@amd.com> 1747212531 +0200
committer GitHub <noreply@github.com> 1747212531 +0200
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[AMDGPU] Canonicalize G_ZEXT of the shift amount in RegBankCombiner (#131792)

Canonicalize it to a G_AND instead so that ISel patterns can pick it
up and ignore it, as the shift instructions only read low bits.
G_ZEXT would be lowered to a v/s_and anyway in most cases.

I'm also looking at making a DAG version of this in a separate patch.