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poller · 20th February 2019, 21:24

i tried hard with GCC again.

seconds. lower is better.

Code:

137.0 no assembly
 47.0 (default)
 45.5 (PGO build) -mtune=ivybridge (default here is -O3 which makes 1st pass PGO .exe crash, thus no better speed i guess)
 44.5 (PGO build) -mtune=ivybridge -O2
 43.9 (PGO build) -mtune=ivybridge -funroll-loops -finline-functions -ftree-loop-vectorize -O2
 39.5 LigH

so i get little improvement with all that fiddling, but still far away from LigH's GCC builds.

giving up here, i have no ideas left.

20th February 2019, 21:24	#6743 \| Link
poller Registered User Join Date: Sep 2018 Posts: 12	i tried hard with GCC again. seconds. lower is better. Code: 137.0 no assembly 47.0 (default) 45.5 (PGO build) -mtune=ivybridge (default here is -O3 which makes 1st pass PGO .exe crash, thus no better speed i guess) 44.5 (PGO build) -mtune=ivybridge -O2 43.9 (PGO build) -mtune=ivybridge -funroll-loops -finline-functions -ftree-loop-vectorize -O2 39.5 LigH so i get little improvement with all that fiddling, but still far away from LigH's GCC builds. giving up here, i have no ideas left. Last edited by poller; 20th February 2019 at 21:48.