| Issue 4: | possible speedup by using an SIMD popcount |
1 of 2
Next ›
|
| 2 people starred this issue and may be notified of changes. | Back to list |
The gcc builtin uses a lookup table but it is possible to do better. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36041 - existing gcc bug for improving the builtin popcount. https://groups.google.com/group/comp.arch/msg/ba28c5dbd47a3bba?dmode=source&output=gplain&noredirect&pli=1 - this post by Terje Mathisen describes the technique
Oct 18, 2012
Project Member
#1
p...@google.com
Labels:
-Type-Defect -Priority-Medium Type-Enhancement Priority-Low
|