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
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JDK 6 Other
6u14Fixed hs12Fixed
Description
Use better instructions sequence for I2D conversion on new x86 cpus.

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

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