Request for reviews (M): 6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies

[Christian Thalinger]

On Tue, 2010-07-13 at 09:02 -0700, Vladimir Kozlov wrote:
> http://cr.openjdk.java.net/~kvn/6968368/webrev
> 
> Fixed 6968368: SIGSEGV in the BCEscapeAnalyzer::copy_dependencies
> 
> Changes for 6966411 moved escape analysis into Optimize() method
> after ResourceMark so on exit from Optimize() all data allocated
> in resource area is freed. bcEscapeAnalyzer uses resource area
> to keep dependency and bytecode analysis data and this data will
> be lost on exit from Optimize(). The method compilation could be
> retried (subsume_loads) with the same CI data but bcEscapeAnalyzer
> dependency and bytecode analysis data are not regenerated and
> contain garbage.
> 
> Solution:
> Use GrowableArray and VectorSet allocated in ciEnv arena.
> Removed unused _stack field.
> 
> Failed test, CTW, JPRT, nsk.stress

Looks good.  -- Christian