Hello, This eliminates a few large loops in lra-assigns.c. They're not the most costly loops but the life times of the bitmaps is well-defined and destroying a bitmap obstack is much cheaper than looping over all bitmaps calling bitmap_clear. The saving is small but you have to start somewhere...
Bootstrapped lra-branch and tested on x86_64-unknown-linux-gnu, along with the patch from earlier today. OK for the branch? Ciao! Steven
lra_assign_bitobstacks.diff
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