Duplicate :
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C1 needs to be able to do parallel compilation, which is important for SPARC CMT hardware. Summary of the changes: - Refactor the initialization steps into global setup to allocate some persistent pieces, and per compilation setup. - Move state out of static fields into per thread structures. - Convert visitor patterns that used functions to use closures. - Remove the machinery that allowed the appearance of multithreading in the tiered world when it wasn't really supported.
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