Hi Brian,

no, TF-M does not use it (on purpose), i.e. if GCC enables it by default, the impact of LTO has not been assessed.

Thanks, Antonio

From: Quach, Brian via TF-M <tf-m@lists.trustedfirmware.org>
Sent: Tuesday, April 1, 2025 16:01
To: tf-m@lists.trustedfirmware.org <tf-m@lists.trustedfirmware.org>
Subject: [TF-M] Link Time Optimization

Hi, does TF-M use LTO? I didn’t see any flags to disable it in toolchain_GNUARM.cmake. I think for GCC, it’s enabled by default if no flag is set.

Regards,

Brian Quach

SimpleLink MCU

Texas Instruments Inc.

12500 TI Blvd, MS F-4000

Dallas, TX 75243

214-479-4076