[PATCH] D69059: [SVE][AArch64] Adding patterns for while intrinsics

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Hmm, I just dug up some examples using ACLE.  It looks like the suggestion there is to use ptest on the result.  The ptest can then be optimized away by the backend in common cases.  I guess that works.



================
Comment at: llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td:1506
+  defm WHILEHS_PXX : sve_int_while8_rr<0b100, "whilehs", null_frag>;
+  defm WHILEHI_PXX : sve_int_while8_rr<0b101, "whilehi", null_frag>;
+
----------------
Why are you using null_frag here?

Also, there aren't any tests for whilege/whilegt/whilehs/whilehi.


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