https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101195
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 57249
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57249&action=edit
gcc14-pr101195.patch
Initially I thought we should emit some error message, like that the argument
must be non-negative constant, but given the
iwhich = EH_RETURN_DATA_REGNO (iwhich);
if (iwhich == INVALID_REGNUM)
return constm1_rtx;
a few lines later where it will on pretty much all architectures return
INVALID_REGNUM for all but 2-4 values and so silently expand to -1 at runtime
I think silently expanding the negative values to that as well is just fine.
There is no fundamental difference between -1, -42, 42 or 237 in this regard,
all of them most likely aren't eh regnos.
