JDK-7181494 : cleanup avx and vectors code
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs24
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2012-07-03
  • Updated: 2013-09-04
  • Resolved: 2012-07-24
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JDK 7 JDK 8 Other
7u40Fixed 8Fixed hs24Fixed
Some new mach nodes which use AVX (3-operands) instructions have prefix 'v' (vsubF_reg) which may confuse them with vector nodes. Do renaming. Also condsolidate avx and vectors macroassembler instructions declaration and definition.

Add float-point vectors loads instructions since SIMD FP execution unit is separate from integer unit in SSE - there is at least one cycle penalty  for moving data between them.

EVALUATION http://hg.openjdk.java.net/hsx/hotspot-emb/hotspot/rev/2c368ea3e844

EVALUATION http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/2c368ea3e844