[PATCH] D106555: [PowerPC] handle more splat loads

[ChenZheng via Phabricator via llvm-commits]

shchenz marked 2 inline comments as done.
shchenz added inline comments.


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Comment at: llvm/test/CodeGen/PowerPC/load-and-splat.ll:223
+; P7-NEXT:    lhzx r4, 0, r4
+; P7-NEXT:    mtvsrd v2, r4
+; P7-NEXT:    vsplth v2, v2, 3
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nemanjai wrote:
> Definitely bad. P7 doesn't have direct moves.
For this case, now we use one more instruction than the left ones. But I think it should still be a win as we don't use the stack which is always good for some opts, like leaf calls related optimizations. And now it uses fewer memory operations 2 vs 3.


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