DBC below. Somehow it is ugly that the notion of "representation" is leaking
into range analysis, which is fundamentally wrong. But this has been there
(partly) before and is a story for a different CL IMHO...
https://chromiumcodereview.appspot.com/16206004/diff/2001/src/hydrogen-instructions.cc
File src/hydrogen-instructions.cc (right):
https://chromiumcodereview.appspot.com/16206004/diff/2001/src/hydrogen-instructions.cc#newcode1852
src/hydrogen-instructions.cc:1852: (r.IsSmi() &&
!a->Includes(Smi::kMinValue)) ||
* Re-order back to a, then b test.
* Introduce 'min_value = r.IsSmi() ? Smi::kMinValue() : kMinInt' and use
that.
Same elsewhere.
https://chromiumcodereview.appspot.com/16206004/
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