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* [Bug target/95453] New: Failure to avoid useless sign extension
@ 2020-05-31 14:53 gabravier at gmail dot com
2020-05-31 16:22 ` [Bug target/95453] " pinskia at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: gabravier at gmail dot com @ 2020-05-31 14:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95453
Bug ID: 95453
Summary: Failure to avoid useless sign extension
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: gabravier at gmail dot com
Target Milestone: ---
void f2(int);
void f1(short x)
{
f2(x);
}
With -O3, GCC outputs this :
f1(short):
movsx edi, di
jmp f2(int)
LLVM outputs this :
f1(short): # @f1(short)
jmp f2(int) # TAILCALL
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/95453] Failure to avoid useless sign extension
2020-05-31 14:53 [Bug target/95453] New: Failure to avoid useless sign extension gabravier at gmail dot com
@ 2020-05-31 16:22 ` pinskia at gcc dot gnu.org
2020-06-01 7:50 ` crazylht at gmail dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2020-05-31 16:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95453
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ABI
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
What does the ABI say about argument passing of types which are sized less than
int?
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/95453] Failure to avoid useless sign extension
2020-05-31 14:53 [Bug target/95453] New: Failure to avoid useless sign extension gabravier at gmail dot com
2020-05-31 16:22 ` [Bug target/95453] " pinskia at gcc dot gnu.org
@ 2020-06-01 7:50 ` crazylht at gmail dot com
2021-03-04 21:03 ` pinskia at gcc dot gnu.org
2021-03-04 21:03 ` pinskia at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: crazylht at gmail dot com @ 2020-06-01 7:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95453
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
Duplicated as PR95076?
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/95453] Failure to avoid useless sign extension
2020-05-31 14:53 [Bug target/95453] New: Failure to avoid useless sign extension gabravier at gmail dot com
2020-05-31 16:22 ` [Bug target/95453] " pinskia at gcc dot gnu.org
2020-06-01 7:50 ` crazylht at gmail dot com
@ 2021-03-04 21:03 ` pinskia at gcc dot gnu.org
2021-03-04 21:03 ` pinskia at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-03-04 21:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95453
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jonathan.poelen at gmail dot com
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 99384 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/95453] Failure to avoid useless sign extension
2020-05-31 14:53 [Bug target/95453] New: Failure to avoid useless sign extension gabravier at gmail dot com
` (2 preceding siblings ...)
2021-03-04 21:03 ` pinskia at gcc dot gnu.org
@ 2021-03-04 21:03 ` pinskia at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-03-04 21:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95453
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DUPLICATE
Status|UNCONFIRMED |RESOLVED
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is a dup of bug 97607 which has the anlysis already.
*** This bug has been marked as a duplicate of bug 97607 ***
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-03-04 21:03 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2020-05-31 14:53 [Bug target/95453] New: Failure to avoid useless sign extension gabravier at gmail dot com
2020-05-31 16:22 ` [Bug target/95453] " pinskia at gcc dot gnu.org
2020-06-01 7:50 ` crazylht at gmail dot com
2021-03-04 21:03 ` pinskia at gcc dot gnu.org
2021-03-04 21:03 ` pinskia at gcc dot gnu.org
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