llvm-project

efc72347 - [AArch64] Improve getPartialReductionCost for fixed-width VFs (#126538)

[AArch64] Improve getPartialReductionCost for fixed-width VFs (#126538) NEON does not have a version of udot/sdot that accumulates into 64-bit integer values, so we should return Invalid from getPartialReductionCost for 64-bit types and fixed-width VFs. In theory, if the 64-bit versions of SVE udot/sdot are available we could use those, but we don't currently have lowering support for that.