[PATCH] D129765: [DAG] SimplifyDemandedBits - don't early-out for multiple use values

Fri Jul 22 07:19:23 PDT 2022

RKSimon added a reviewer: deadalnix.
RKSimon added inline comments.

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Comment at: llvm/test/CodeGen/AArch64/parity.ll:85
+; CHECK-NEXT:    lsr x9, x8, #2
+; CHECK-NEXT:    eor w8, w8, w9
 ; CHECK-NEXT:    eor w8, w8, w8, lsr #1
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RKSimon wrote:
> RKSimon wrote:
> > I'm going to take a look at this, but for reference I'm surprised it doesn't get performed on the neon unit like ctpop: https://github.com/llvm/llvm-project/issues/56531
> This looks like its fixed by D127115
D130246 converts i64/i128 parity to use the neon unit

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https://reviews.llvm.org/D129765