http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49927
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-01
10:07:57 UTC ---
Caused by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176536
Shorter testcase:
char a[1][1];
long long b;
void
foo (void)
{
--a[b][b];
}
I'd say it is a mistake to allow subregs of DImode pseudos in the addresses for
-m32, it makes sense only for TARGET_64BIT when DImode is just a single general
register. Because otherwise the subregs of DImode registers in addresses
increase register pressure on the insn in question, especially if in the
address there is more than one.
