JDK-4719414 : Use x86 SSE and SSE2 instructions for FP computation
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 1.4.2
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: x86
  • Submitted: 2002-07-23
  • Updated: 2002-11-13
  • Resolved: 2002-11-13
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1.4.2 mantisFixed
C2 makes particularlly bad FP code on Intel because we do not fully support the Intel FPU stack model.  We should use the Intel SSE registers instead.

CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: mantis FIXED IN: mantis INTEGRATED IN: mantis mantis-b05

EVALUATION Performance improvement of 70% on mepgaudio, 10% on mtrt, nearly 2x for SciMark codes on P4's.