tree 45e07cdff5ed04f08e41c6f17ad9dec6390f800c
parent 8beeaec90e4a8f68069c39f83bfdc6bccb9b46d8
author Peter Collingbourne <peter@pcc.me.uk> 1601066190 -0700
committer Copybara-Service <copybara-worker@google.com> 1601413643 -0700

scudo: Re-order Allocator fields for improved performance. NFCI.

Move smaller and frequently-accessed fields near the beginning
of the data structure in order to improve locality and reduce
the number of instructions required to form an access to those
fields. With this change I measured a ~5% performance improvement on
BM_malloc_sql_trace_default on aarch64 Android devices (Pixel 4 and
DragonBoard 845c).

Differential Revision: https://reviews.llvm.org/D88350

GitOrigin-RevId: e851aeb0a5084d968d6384fbc2257bbe05dcdacb