Bug 24208 - [powerpc] Enable log/logf in libmvec vector math library on POWER VSX
Summary: [powerpc] Enable log/logf in libmvec vector math library on POWER VSX
Status: RESOLVED FIXED
Alias: None
Product: glibc
Classification: Unclassified
Component: math (show other bugs)
Version: unspecified
: P2 enhancement
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords:
Depends on:
Blocks: 20123
  Show dependency tree / graph
 
Reported: 2019-02-11 18:33 UTC by David Edelsohn
Modified: 2019-05-09 20:25 UTC (History)
2 users (show)

See Also:
Host:
Target: powerpc64le-linux
Build:
Last reconfirmed:
fweimer: security-

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description David Edelsohn 2019-02-11 18:33:23 UTC 

    


    


      



        
          Comment 1
        

        
          Shawn Landden

        

        
        

        
          2019-05-09 00:18:43 UTC
        

      






As I discussed here: https://sourceware.org/ml/libc-alpha/2019-05/msg00192.html

Two attempts were not able to increase performance with a vector log or logf, (I suspect) for lack of a vector gather instruction in ppc64el ISA 3.0.

    


    


      



        
          Comment 2
        

        
          Tulio Magno Quites Machado Filho

        

        
        

        
          2019-05-09 20:25:32 UTC
        

      






Patches merged into branch tuliom/libmvec.