What is this GIMPLE?

[Gary Oblock]

I print out a bit of GIMPLE for a program and it looks like this:

  <bb 3> [local count: 13634385]:
  # a_1 = PHI <a_320(D)(2), a_318(118)>
  # n_11 = PHI <n_321(D)(2), n_319(118)>
loop:
  # DEBUG n => n_11
  # DEBUG a => a_1
  _2 = (long unsigned int) a_1;
  _3 = _2 & 7;
  _347 = _3 != 0;

That bit that says "loop:" isn't a GIMPLE_LABEL and
it has operands, the first of which is "size_t n = size_t;"
and I find that a bit odd...

What is this thing and what does it do? Note, I'm trying to
parse and transform some GIMPLE and this is confusing my
code (and me.) I looked in the internals doc and grepped the
code but I'm still in the dark.

Note,I'd like be able to detect and ignore this if it's just informational.

Thanks,

Gary

Gary


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