[Bug rtl-optimization/17752] New: Hot/cold basic block partitioning optimization has problems

["ctice at apple dot com" <gcc-bugzilla at gcc dot gnu dot org>]

- This optimization scans forward in the instruction stream (2-3 instructions for each basic block),
    which is inefficient
- This optimization does not work properly with dwarf2 debug information  (the assembler     
    complains about attempting subtraction between labels in different sections).

-- 
           Summary: Hot/cold basic block partitioning optimization has
                    problems
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ctice at apple dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17752