[Bug tree-optimization/19708] New: tree optimizer doesn't meet asm constraints

["amodra at bigpond dot net dot au" <gcc-bugzilla at gcc dot gnu dot org>]

Found when attempting to compile powerpc64-linux glibc using current mainline gcc,
the attached cut-down testcase results in

tcboff.i: In function 'dummy':
tcboff.i:24: warning: asm operand 0 probably doesn't match constraints
tcboff.i:24: error: impossible constraint in 'asm'

-- 
           Summary: tree optimizer doesn't meet asm constraints
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: amodra at bigpond dot net dot au
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc*-linux, i686-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19708