tree b01c4024f41a1558374a9578b710770cca27412c
parent d45ff8ebf88ef4add46a80ccdfc2d97a8b4b091b
author Colin Cross <ccross@android.com> 1479172396 -0800
committer Jan Niklas Hasse <jhasse@bixense.com> 1604051916 +0100

Add unique IDs to edges

Edges are nominally ordered by order in the build manifest, but in
fact are ordered by memory address.  In most cases the memory address
will be monontonically increasing.  Since serialized build output will
need unique IDs, add a monotonically increasing ID to edges, and use
that for sorting instead of memory address.