JDK-8134795 : Port fdlibm pow to Java
  • Type: Sub-task
  • Component: core-libs
  • Sub-Component: java.lang
  • Affected Version: 9
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2015-08-31
  • Updated: 2017-05-12
  • Resolved: 2015-09-17
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
JDK 9
9 b83Fixed
Related Reports
Relates :  
JDK-8136874 - Bug in port of fdlibm pow to Java
Relates :  
JDK-8136414 - Large performance penalty declaring a method strictfp on strict-only platforms
Relates :  
JDK-8181857 - MathPowTest::computeRow recompiles infinitely
Description
See enclosing task for context.
Comments
@Christian, there is no more formal benchmark I am using. However, I would welcome the development of one.
02-12-2015
A trivial micro-benchmark is attached (see the Attachments section above) is one of the tests used to test this change. The attachments included a shell script used to execute the micro-benchmark showing JVM command line options used. The attached trivial micro-benchmark does not utilize JMH, though it could be converted rather easily, (and probably further enhanced too). Joe Darcy may have additional performance tests?
01-12-2015
So, there is no JMH benchmark or something?
01-12-2015
Could you tell me which benchmark you used to look at performance? I'd need that one.
01-12-2015
Review thread: http://mail.openjdk.java.net/pipermail/core-libs-dev/2015-September/035218.html
16-09-2015