[Bug debug/43222] two DEBUG i => 0 generated after loop copy header

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2010-03-02 11:12 -------
The extra DEBUG stmts or DEBUG_INSNs only consume memory, they shouldn't affect
debug info generation, though perhaps it wouldn't hurt once or twice during
gimple optimizations and once or twice during RTL optimizations to get rid of
redundant DEBUG stmts resp. DEBUG_INSNs (where redundant is one where for the
same variable there is another DEBUG stmt or DEBUG_INSN after it not separated
by any real statements or insns/labels.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43222