https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109213
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |hubicka at gcc dot gnu.org
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
t.c:26:5: missed: not inlinable: main/7 -> m/6, --param
large-stack-frame-growth limit reached
and after the DSE:
IPA function summary for main/7 inlinable
global time: 38.636364
self size: 11
global size: 11
min size: 8
self stack: 0
global stack: 0
IPA function summary for m/6 inlinable
global time: 86.705545
self size: 22
global size: 22
min size: 19
self stack: 264
global stack: 264
vs.
IPA function summary for main/7 inlinable
global time: 42.636364
self size: 14
global size: 14
min size: 11
self stack: 40
global stack: 40
without the DSE. And we apply the limit in a quite complicated way
in caller_growth_limits, changing mains stack size to 1 or 4 doesn't
help, so it isn't a totally arbitrary special-casing of zero caller stack
size.
I'm leaning towards a WONTFIX or reclassify as non-regression. The bug
is definitely not that we now do more DSE, the pre-existing bug might be
that we take the absolute size of the caller stack into account.
