https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91691
Jim Wilson <wilson at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-10-10
CC| |wilson at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Jim Wilson <wilson at gcc dot gnu.org> ---
I can reproduce using gcc-8 and gcc-9 but not mainline. I'm using gcc options:
-std=gnu11 -fgnu89-inline -mcmodel=medlow -g -O2 -Wall -Wwrite-strings -Wundef
-fmerge-all-constants -frounding-math -fno-stack-protector -Wstrict-prototypes
-
Wold-style-definition -fmath-errno -fPIC -ftls-model=initial-exec \
tmp.i -fdump-tree-all -fdump-ipa-all
Bisecting on mainline shows that the new IPA SRA pass added Sept 20 fixed this.
Without that patch, I see that total_deadline is being decomposed, but
apparently there is something wrong with the tracking info. If I add
-fno-ipa-sra the warning goes away.
The new IPA-SRA is too big of a patch to backport, so it looks like this will
have to remain unfixed on the gcc-8 and gcc-9 branches.
