http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20020
--- Comment #21 from Gary Funck <gary at intrepid dot com> 2012-08-12 21:24:40
UTC ---
(In reply to comment #20)
> X86 doesn't support __int128 and requires SSE for TImode.
> We may need to limit those testcases for int128 target.
OK, I'll add: /* { dg-require-effective-target int128 } */.
> If it is an ABI, we can add a testcase to gcc.target/x86_64/abi
> for x86-64. If there is no additional issues for x86-64, I think
> we can close it after checking in those testcases.
This issue is performance-related, not ABI-related, per the discussion replies.
The tests will FAIL on the current compiler because it does not assign TI mode
to 128 bit struct's. The tests PASS if the suggested MAX_FIXED_MODE_SIZE
definition is added to config/i386/i386.h.
Note: Applying the new MAX_FIXED_MODE_SIZE definition patch will result in at
least one GCC test regression (see comment #9).
