[Bug target/109929] profiledbootstrap failure on aarch64-linux-gnu with graphite optimization

[rsandifo at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109929

--- Comment #7 from Richard Sandiford  ---
Hmm, yeah, like you say, neither of those commits should have made a different
to whether bootstrap works.  I guess the problem is just latent now.

[Bug target/109929] profiledbootstrap failure on aarch64-linux-gnu with graphite optimization

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109929

--- Comment #6 from Xi Ruoyao  ---
The first commit deferring the failure to stagefeedback is:

commit 575858508090b18dcbc176db285c9f55227ca4c0
Author: Richard Sandiford 
Date:   Tue Oct 17 23:46:33 2023 +0100

aarch64: Use vecs to store register save order

[Bug target/109929] profiledbootstrap failure on aarch64-linux-gnu with graphite optimization

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109929

--- Comment #5 from Xi Ruoyao  ---
The first good commit is:

commit aa2ad77a9b3994fb679e5295d9570f6f8696540d
Author: Szabolcs Nagy 
Date:   Tue May 9 11:07:05 2023 +0100

aarch64: Do not force a stack frame for EH returns

but I cannot see how it's related to the issue...

And with the parent of this commit, the bootstrap fails in stagefeedback where
build/genhooks -d ../../gcc/gcc/doc/tm.texi.in > tmp-tm.texi segfaults.  I'll
do another round of bisection to see when the stagetrain error was "fixed". 
(Just for better understanding the issue.)

[Bug target/109929] profiledbootstrap failure on aarch64-linux-gnu with graphite optimization

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109929

Richard Biener  changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution|--- |FIXED

--- Comment #4 from Richard Biener  ---
let's close this then

[Bug target/109929] profiledbootstrap failure on aarch64-linux-gnu with graphite optimization

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109929

--- Comment #3 from Xi Ruoyao  ---
Hmm, it seems no longer happening with current trunk.

[Bug target/109929] profiledbootstrap failure on aarch64-linux-gnu with graphite optimization

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109929

--- Comment #2 from Xi Ruoyao  ---
(In reply to Richard Biener from comment #1)
> I think nobody paid attention to graphite the last years - I suggest to
> try simpler things like non-profiled bootstrap or just running the
> testsuite with -fgraphite-identity added.

A non-profiled bootstrap works.

[Bug target/109929] profiledbootstrap failure on aarch64-linux-gnu with graphite optimization

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109929

--- Comment #1 from Richard Biener  ---
I think nobody paid attention to graphite the last years - I suggest to
try simpler things like non-profiled bootstrap or just running the
testsuite with -fgraphite-identity added.