tree 1cc475954aab4250e3aa4ddc5d45e73ad6ad7f8e
parent e213782845aa8ef4ccdd080645c55f727e5b911c
author Vy Nguyen <vyng@google.com> 1636766790 -0500
committer Copybara-Service <copybara-worker@google.com> 1636768866 -0800

[lld-macho] Parallelize scanning the symbol tables in export/unexport-ing.

(Split from D113167)
Benchmarking on one of our large apps which exports a few thousands symbols,
this showed an improvement of ~17%.

x ./LLD_no_parallel.txt
+ ./LLD_with_parallel.txt

    N           Min           Max        Median           Avg        Stddev
x  10         84.01         89.41         88.64        87.693     1.7424061
+  10          71.9         74.29         72.63        72.753    0.77734663
Difference at 95.0% confidence
	-14.94 +/- 1.26763
	-17.0367% +/- 1.44553%
	(Student's t, pooled s = 1.34912)

(wallclock)

Differential Revision: https://reviews.llvm.org/D113820

GitOrigin-RevId: ad932320d89684e23f7952e54bc90c96598db1a3