Google Posts Patches So The Linux Kernel Can Be LTO-Optimized By Clang

[phoronix]

Phoronix: Google Posts Patches So The Linux Kernel Can Be LTO-Optimized By Clang

A Google engineer has posted patches for review so that the mainline Linux kernel can be built with Link-Time Optimizations (LTO) by the LLVM Clang code compiler...

http://www.phoronix.com/scan.php?pag...ng-LTO-Patches

[StarterX4]

Finally

[CochainComplex]

imagine a ltoed xanmod

[oleid]

Execution speed is usually not really improving with lto, but size reduction is often measurable.

[caligula]

Execution speed is usually not really improving with lto, but size reduction is often measurable.

IIRC, LTO also detects some type signature changes across modules.

[carewolf]

Gonna wait that out. Expect data losses.

[FPScholten]

imagine a ltoed xanmod

Last time I tried this, building failed... (with GCC10)
This is the case with more software, for example ffmpeg also fails to build with lto enabled

[CochainComplex]

Yes LTO or even PGO with the Kernel is seriously not so easy. DId you use march=generic in config?

[Aryma]

i have a dream to see linux without GNU

[Hans Bull]

Execution speed is usually not really improving with lto, but size reduction is often measurable.

Reducing kernel obesity would be more than welcome.