[Bug target/24586] New: [4.0 regression] ICE in g++.dg/opt/mmx2.C

["reichelt at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Jakub, the testcase g++.dg/opt/mmx2.C you added, causes a segfault
on the 4.0 branch:

g++ -O2 -mmmx -c mmx2.C
mmx2.C: In function 'int main()':
mmx2.C:23: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

This can also be seen in Kaveh's testresults, for example:

http://gcc.gnu.org/ml/gcc-testresults/2005-10/msg00523.html
http://gcc.gnu.org/ml/gcc-testresults/2005-10/msg01202.html

It looks like --enable-checking is required to trigger the bug.

As this is a new FAIL in the testsuite, I rate this as a regression.

Could you please have a look?


-- 
           Summary: [4.0 regression] ICE in g++.dg/opt/mmx2.C
           Product: gcc
           Version: 4.0.3
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, monitored, ice-checking, ssemmx
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24586