Hi,
Here is a preliminary result for fold_buildN from my personal tree. I compiled cc1-i files with ./cc1 -quiet -O2 -fomit-frame-pointer -fmem-report -o /dev/null. I used --enable-gather-detailed-mem-stats to see how many nodes and bytes we are allocating for trees. (Thanks Honza!) I then summed up the memory usage of trees.
original patched diff% #nodes 24,234,589 23,577,245 -2.712% #bytes 1,228,797,315 1,205,528,427 -1.893%
As far as compile time, I consistently see improvements of 0.1% or a bit more.
That's good. I think that in situations where you're using PCH, you'll likely see a better improvement, as you'll need to access fewer PCH pages when later on. Thanks for working on this cleanup; it's a long-standing issue.
-- Mark Mitchell CodeSourcery, LLC [EMAIL PROTECTED] (916) 791-8304
