https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
Richard Biener changed:
What|Removed |Added
Resolution|--- |FIXED
Status|ASSIGNED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
--- Comment #9 from CVS Commits ---
The master branch has been updated by Richard Biener :
https://gcc.gnu.org/g:f6fb661ea8ac7e17c6924719de6219f002c4efef
commit r12-7670-gf6fb661ea8ac7e17c6924719de6219f002c4efef
Author: Richard Biener
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
--- Comment #8 from Richard Biener ---
(In reply to Jakub Jelinek from comment #7)
> Ok. Though, perhaps indeed trying to detect what phiopt optimizes and not
> sinking that case would be long term best, so that we don't do the ping pong.
Or,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
--- Comment #7 from Jakub Jelinek ---
Ok. Though, perhaps indeed trying to detect what phiopt optimizes and not
sinking that case would be long term best, so that we don't do the ping pong.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
--- Comment #6 from Richard Biener ---
(In reply to Jakub Jelinek from comment #5)
> Wouldn't at least now simply disabling the "optimization" in the last sink
> pass instance be safer?
I don't see how that's easily done. Not sinking any
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
Richard Biener changed:
What|Removed |Added
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
--- Comment #3 from luoxhu at gcc dot gnu.org ---
phiopt4 and sink2 are doing reverse optimizations:
pr102008.c.200t.phiopt4:
Hoisting adjacent loads from 3 and 4 into 2: _6 = foo_4(D)->a; _5 =
foo_4(D)->b;
pr102008.c.202t.sink2:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
--- Comment #2 from luoxhu at gcc dot gnu.org ---
Confirmed if move the sink2 pass before phiopt4 could restore the previous
instructons for this case:
test:
.LFB0:
.cfi_startproc
cmp w0, 1
ldp w0, w1, [x1]
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
Richard Biener changed:
What|Removed |Added
Last reconfirmed||2021-08-23
Ever confirmed|0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102008
Andrew Pinski changed:
What|Removed |Added
Target Milestone|--- |12.0
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