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Avoid deref/ref cycles for no-op coercions between unsafe pointers #26336

Merged
merged 1 commit into from
Jun 18, 2015
Merged

Avoid deref/ref cycles for no-op coercions between unsafe pointers #26336

merged 1 commit into from
Jun 18, 2015

Commits on Jun 16, 2015

  1. Avoid deref/ref cycles for no-op coercions between unsafe pointers 

    Unlike coercing from reference to unsafe pointer, coercing between two
unsafe pointers doesn't need an AutoDerefRef, because there is no region
that regionck would need to know about.

In unoptimized libcore, this reduces the number of "auto_deref" allocas
from 174 to 4.
    @dotdash
    dotdash committed Jun 16, 2015
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