Making PrintEscapeAnalysis a diagnostic option on product VM?
john.r.rose at oracle.com
Thu Jul 9 21:34:58 UTC 2015
On Jul 9, 2015, at 1:10 PM, Chris Newland <cnewland at chrisnewland.com> wrote:
> It looks like this will only execute when DebugNonSafepoints is true and
> this is a diagnostic VM option.
> Does anyone have an alternative method for getting BCIs for eliminated
> allocs without using Note_Notes?
The node notes are incomplete and approximate mappings from optimized IR back to source (BCI) locations.
They may be useful when nothing more accurate is available, but you can't rely on them to always tell the truth.
They were introduced to give hints to instruction-level profile tools about where the instructions come from.
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