Duncan P. N. Exon Smith 9b139800a7 MC: Pack MCSymbol::Index in with the bitfield in MCSymbol
Save a pointer for each `MCSymbol`, bringing `llc` memory usage down
from 920 MB to 914 MB, around ~0.6%.

(I'm looking at `llc` memory usage on `verify-uselistorder.lto.opt.bc`;
see r236629 for details.)

llvm-svn: 238003
2015-05-22 05:59:05 +00:00
2015-05-22 05:54:24 +00:00
2015-05-22 02:23:22 +00:00
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