[PATCH] D19426: [AArch64] Use the reciprocal estimation machinery

[Evandro Menezes via llvm-commits]

evandro added a comment.

In http://reviews.llvm.org/D19426#421169, @jmolloy wrote:

> How does X86 do this?


It doesn't.  AFAIK, ARM is the only target that has an instruction for the series steps.  All the other targets that can estimate the initial value, X86, PPC, IA64, MIPS, compute the series steps with polynomials.


http://reviews.llvm.org/D19426