David Green
b9622e84b4
[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 .
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