Comment #1 on issue 2458 by [email protected]: Very simple function of float32array deopts on ia32
http://code.google.com/p/v8/issues/detail?id=2458
This looks like a bug with runtime type feedback: total += A[i] is wrongly translated as integer-add instead of a double-op. Writing var total = 0.5 for initialization makes deopts disappear. My first guess would be the IC stub code that collects type feedback for arithmetic ops.
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