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Currently IRCE relies on the loops it transforms to be (semantically) of
the form:
for (i = START; i < END; i++)
...
or
for (i = START; i > END; i--)
...
However, we were not verifying the presence of the START < END entry
check (i.e. check before the first iteration). We were only verifying
that the backedge was guarded by (i + 1) < END.
Usually this would work "fine" since (especially in Java) most loops do
actually have the START < END check, but of course that is not
guaranteed.
llvm-svn: 294375
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