tree a0e4c7c92ca51c5cbfdba1d62944f98e4ec55261
parent bd16a87d05d33655a6f51f89fa4c5663c72c648e
author David Green <david.green@arm.com> 1740134504 +0000
committer GitHub <noreply@github.com> 1740134504 +0000
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[TTI][AArch64] Detect OperandInfo from scalable splats. (#122469)

Pulled out of #122236, this allows Splats constants to be recognized by
getOperandInfo, allowing "better" costs for instructions like divides by
constants to be produced (which are expanded into mul+add+shift). Some
of the costs are not very accurate yet, but the comparison of scalar vs
fixed-width vs scalable for the same div can become more accurate,
especially with patches like #122236.