[PATCH] D104852: [AArch64][SVEIntrinsicOpts] Convect cntb/h/w/d to vscale intrinsic or constant.

[JunMa via Phabricator via cfe-commits]

junparser added inline comments.


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Comment at: llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp:662
+    return IC.replaceInstUsesWith(II, StepVal);
+  } else if (Pattern == AArch64SVEPredPattern::vl16 && NumElts == 16) {
+    Constant *StepVal = ConstantInt::get(II.getType(), NumElts);
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david-arm wrote:
> Could you potentially fold these two cases into one somehow? Maybe with a switch-case statement? I'm just imagining a situation where we might want other patterns too like vl32, vl64, etc.
> 
There is no other special pattern except vl16. But I do think switch-case is more straightforward


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  https://reviews.llvm.org/D104852/new/

https://reviews.llvm.org/D104852