tree 1b5af79a0e1ffe08f47944503d35aa66e47b8bbc
parent 7bf848ed84162de6b380692cf4e099f71ae074b4
author Peter Collingbourne <peter@pcc.me.uk> 1599704126 -0700
committer Copybara-Service <copybara-worker@google.com> 1600628340 -0700

scudo: Add an API for disabling memory initialization per-thread.

Here "memory initialization" refers to zero- or pattern-init on
non-MTE hardware, or (where possible to avoid) memory tagging on MTE
hardware. With shared TSD the per-thread memory initialization state
is stored in bit 0 of the TLS slot, similar to PointerIntPair in LLVM.

Differential Revision: https://reviews.llvm.org/D87739

GitOrigin-RevId: 7bd75b630144ec639dbbf7bcb2797f48380b953b