JDK-7079317 : Incorrect branch's destination block in PrintoOptoAssembly output
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs22
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2011-08-15
  • Updated: 2011-11-25
  • Resolved: 2011-11-25
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JDK 7 Other
7u2Fixed hs22Fixed
Related Reports
Relates :  
After changes for 7063629 PrintoOptoAssembly shows all branches have B0 as destination block:

0c0 + 	BA     B0


EVALUATION http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/11211f7cb5a0

PUBLIC COMMENTS Save/restore label and block in scratch_emit_size(). MachBranchNode was added as base class for MachIfNode, MachGotoNode and MachNullCheckNode. The only problem was JumpX mach node which is subclass of MachConstantNode. But it is fine since it does not have label, short version or delay slot (the sparc instruction has delay slot but we use ialu_reg_reg pipe_class). It needs only one additional check in output.cpp where Kill projections are processed.

EVALUATION http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/11211f7cb5a0