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Fix Bdescr Cmm macro #466
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Fix Bdescr Cmm macro #466
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TerrorJack
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Mar 27, 2020
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This PR fixes the Cmm macro
Bdescrwhich computes the address of the block descriptor given a block address. Its definition is different from GHC's one (due to the different usage of blocks/mblocks) and follows closely the definition in the RTS (GC.bdescr).In order implement Bdescr, it was necessary to port also the C macros
FIRST_BDESCR,BLOCK_ROUND_UP,FIRST_BLOCK_OFFto the Cmm world.