[PATCH] Use rsqrt (X86) to speed up reciprocal square root calcs (PR20900)

Sanjay Patel spatel at rotateright.com
Thu Oct 16 12:16:54 PDT 2014


Ping.

This one should be less controversial than http://reviews.llvm.org/D5787 / http://llvm.org/bugs/show_bug.cgi?id=21290 .
We're not actually adding any more fast-math complexity with this patch - just relying on the existing logic.

http://reviews.llvm.org/D5658






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