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* [Bug c/108593] New: No inlining after function cloning
@ 2023-01-29 19:16 david.bolvansky at gmail dot com
2023-01-29 20:19 ` [Bug ipa/108593] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: david.bolvansky at gmail dot com @ 2023-01-29 19:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108593
Bug ID: 108593
Summary: No inlining after function cloning
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: david.bolvansky at gmail dot com
Target Milestone: ---
int __attribute__ ((noinline))
foo (int arg)
{
return 2 * arg;
}
int
bar (int arg)
{
return foo (5);
}
results in:
foo.constprop.0:
mov eax, 10
ret
foo:
lea eax, [rdi+rdi]
ret
bar:
jmp foo.constprop.0
But ... why foo.constprop.0 is not inlined fully into bar? Maybe
foo.constprop.0 inherits noinline attribute from foo?
If so, gcc should drop attributes from cloned functions..
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug ipa/108593] No inlining after function cloning
2023-01-29 19:16 [Bug c/108593] New: No inlining after function cloning david.bolvansky at gmail dot com
@ 2023-01-29 20:19 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-01-29 20:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108593
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is by design.
That is a function clone will inherits most of the attributes from its parent.
There are a few will not be inherited in the case of function arguments change;
e.g. nonnull .
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2023-01-29 20:19 UTC | newest]
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2023-01-29 19:16 [Bug c/108593] New: No inlining after function cloning david.bolvansky at gmail dot com
2023-01-29 20:19 ` [Bug ipa/108593] " pinskia at gcc dot gnu.org
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