tree 09471b51dfc56fc926480c49a61e3a9f361b3893
parent 3847329b64c80a392d46737e61e2f816d7208c9d
author Nicolas Capens <capn@google.com> 1661881934 -0400
committer Nicolas Capens <nicolascapens@google.com> 1661968237 +0000

Optimize Frexp() zero handling

Use of the zeroSign variable was eliminated by observing that we already
obtained the sign bit but cleared it when isNotZero is false, which can
be avoided by instead inserting the exponent for 0.5f only when the
argument is not zero.

Bug: b/243791551
Change-Id: I993cb41a94994a3033b08146f59660651380e716
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/67888
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>