[9] RFR(S) 8059299: assert(adr_type != NULL) failed: expecting TypeKlassPtr

[Vladimir Ivanov]

Looks good.

Best regards,
Vladimir Ivanov

On 10/2/14, 8:05 AM, Vladimir Kozlov wrote:
> http://cr.openjdk.java.net/~kvn/8059299/webrev/
> https://bugs.openjdk.java.net/browse/JDK-8059299
>
> Code in Parse::catch_inline_exceptions() incorrectly assumed that all
> paths reach the merge point in next code:
>
>          catch (Exception e) {
>              if (e instanceof Exception1) {
>                  counter1++;
>              } else if (e instanceof Exception2) {
>                  counter2++;
>              }
>              counter++;
>              throw e;
>          }
>
> But we generate an uncommon trap when profiling information matches
> checked exception (in the bug case Exception2, which is the only thrown
> exception).
>
> The fix is to use top() for dead paths when initializing Phi node of
> exceptions klasses. Also did code style clean up in surrounding code.
>
> Added new regression test.
>
> Thanks,
> Vladimir