On Linux/ia32, revision 176563 gave FAIL: gcc.target/i386/andor-2.c scan-assembler-not sete Revision 176559 is OK.
It is caused by revision 176563: http://gcc.gnu.org/ml/gcc-cvs/2011-07/msg00830.html
It's a dup of PR49806 (same testcase). *** This bug has been marked as a duplicate of bug 49806 ***