JDK-6662967 : Optimize I2D conversion on x86
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 7
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: solaris_9
  • CPU: x86
  • Submitted: 2008-02-14
  • Updated: 2013-11-01
  • Resolved: 2011-04-20
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 6 Other
6u14Fixed hs12Fixed
Description
Use better instructions sequence for I2D conversion on new x86 cpus.

Comments
EVALUATION In new AMD cpu CVTDQ2PS and CVTDQ2PD are single direct path instructions.
20-03-2008

SUGGESTED FIX Use CVTDQ2PS and CVTDQ2PD for integer values conversions to float and double values on new AMD cpu.
20-03-2008