[Bug rtl-optimization/94516] [10 Regression] gnutls test ./psk-file fails since r10-7515-g2c0fa3ecf70d199af18785702e9e0548fd3ab793

jakub at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Wed Apr 15 09:44:31 GMT 2020


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94516

--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've gathered statistics across x86_64-linux and i686-linux bootstraps/regtests
in postreload.c (reload_cse_simplify_set) when sp = sp + const_int is replaced
with sp = reg, once with the recent cselib.c/var-tracking.c changes reverted
and once with vanilla trunk.
It triggered on -m32 / -m64 code with old cselib.c 1559 / 68 times and with new
cselib.c 8476 / 453 times.  So, it was happening before too and I'll try to
check some cases if it also doesn't prevent csa, but now happens 5-7 times more
often.


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