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Russ Cox authored
The type information in reflect.Type and the GC programs is now 1 bit per word, down from 2 bits. The in-memory unrolled type bitmap representation are now 1 bit per word, down from 4 bits. The conversion from the unrolled (now 1-bit) bitmap to the heap bitmap (still 4-bit) is not optimized. A followup CL will work on that, after the heap bitmap has been converted to 2-bit. The typeDead optimization, in which a special value denotes that there are no more pointers anywhere in the object, is lost in this CL. A followup CL will bring it back in the final form of heapBitsSetType. Change-Id: If61e67950c16a293b0b516a6fd9a1c755b6d5549 Reviewed-on: https://go-review.googlesource.com/9702Reviewed-by:
Austin Clements <austin@google.com>
6d8a147b
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