https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
--- Comment #13 from Siarhei Volkau ---
Moreover, I think that the patches deal for limited possible cases.
E.g. if upper or lower part of DI memory shall be set to zero the patch won't
help.
It seems feasible to make a special code path for zer
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
--- Comment #12 from Siarhei Volkau ---
Hi Jeffrey,
Thanks for your interest in those patches. But unfortunately I'm not sure that
I can and will pass all required steps to make these patches ready for review.
I have no experience with the RV32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
--- Comment #11 from Jeffrey A. Law ---
Siarhei, it's fine to attach potential patches to bugzilla entries, but once
you're ready for them to be reviewed and potentially integrated, they really
need to be posted to gcc-patches. They are highly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
--- Comment #10 from Siarhei Volkau ---
Created attachment 59965
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59965&action=edit
MIPS patch
Ditto for 32-bit MIPS.
MIPS emits:
move$3,$0
move$2,$0
sw $3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
Siarhei Volkau changed:
What|Removed |Added
CC||lis8215 at gmail dot com
--- Comment #9
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
Jeffrey A. Law changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
--- Comment #7 from Andreas Schwab ---
When compiling for m68k the compiler already generates the latter.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
--- Comment #6 from Jakub Jelinek ---
In that case it is a backend enhancement request. Backends have many ways how
to deal with this, starting from specialized patterns, or using the lower
subreg passes, using their own splitters etc. and many
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
--- Comment #5 from Albert Cahalan ---
This example shows the most simple form of the problem:
unsigned long long ull;
void simple64(void){
ull = 0;
}
NOTE: In the assembly below, I might have missing/excess parentheses. Assembler
synta
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
--- Comment #4 from Albert Cahalan ---
Mostly it's more like PR58741 because of the long long issue.
PR22141 (and PR23684 which is a better match) is about merging small things.
Two of the six examples here show that problem, those being the one
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment #3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70557
Richard Biener changed:
What|Removed |Added
Keywords||missed-optimization
Component|
12 matches
Mail list logo
