Code Review for 6880034

Prepared by:Volker H. Simonis on Fri Oct 2 19:13:30 CEST 2009
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Summary of changes: 195 lines changed: 163 ins; 0 del; 32 mod; 9801 unchg
Patch of changes: 6880034.patch
Author comments:
Deoptimisation can lead to a SIGBUS on 64-bit server VMs on SPARC and to an incorrect result on 32-bit server VMs on SPARC due to a regression introduced by the change: "6420645: Create a vm that uses compressed oops for up to 32gb heapsizes" ( Further investigation showed that change 6420645 is not really the root cause of this error but only reveals a problem with the float register encodings in which was hidden until now.
Bug id: 6880034 SIGBUS during deoptimisation at a safepoint on 64bit-SPARC
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Cdiffs Udiffs Sdiffs Frames Old New Patch Raw src/cpu/sparc/vm/

32 lines changed: 0 ins; 0 del; 32 mod; 9801 unchg

------ ------ ------ ------ --- New Patch Raw test/compiler/6880034/

163 lines changed: 163 ins; 0 del; 0 mod; 0 unchg

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