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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) -- links below jump to the message on this page -- 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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