[PATCH] D100463: [AArch64][SVEIntrinsicOpts] Fold sve_convert_from_svbool(zero) to zero

[Joe Ellis via Phabricator via llvm-commits]

joechrisellis added a comment.

Hi @dmgreen! This is SVE-specific, and `SVEIntrinsicOpts.cpp` is where such transformations are typically placed (at least for now). I did a quick grep and it seems SVE intrinsics don't currently have much of a presence in generic passes like instcombine/constant folding, perhaps because some SVE optimisations are more complex than others and I guess it makes sense to keep them all in the same place.

X86 also has `llvm/lib/Target/X86/X86InstCombineIntrinsic.cpp` which houses instcombine-like optimisations for X86. 🙂


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