Wednesday, July 29, 2009

A server compiler crash fix

Here's my latest contribution to OpenJDK:

The patch fixes a server compiler crash that happens in a very rare condition, described here. A key attribute of the server compiler IR is that an instruction must dominate all its inputs. However, in the function remix_address_expressions(), this property was violated and caused a crash in a later split if transformation.

Thanks to Chuck Rasbold and Tom Rodriguez.

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