https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112087
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2023-10-27
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
"Round-tripping" in the sense of
gcc -fdump-tree-X-gimple=- t.c -S | gcc -x c -fgimple -
was never the intention.
Yes, parsing of CLOBBERs isn't implemented, nor is parsing of
"gimple_has_volatile_ops", but since that's redundant info recomputed
at update_stmt time we can just scrap it at dump time (but then it's
a bit odd to not see it with -gimple ..).
It would be nice to have bugreports more specific that "cannot round-trip A or
B".
Two bugs for this.
Parsing of ={v}
Parsing of {CLOBBER} (and variants)
parsing of ={v} is a bit difficult since it would need to be tentative
(there's always a reason why seemingly "easy" things are not yet done).
Finding a better syntax for dumping the flags on a stmt might help.
Workaround for both: use -fstack-reuse=none
