tree dec44068eb961dd0b3c818855e36fd2ca5d2c577
parent 81fb2649bf2cc17330cb9d1e4c664c9b2c4ac0d9
author Steven Perron <stevenperron@google.com> 1547844216 -0500
committer David Neto <dneto@google.com> 1547844216 -0500

Handle extract with no index in VDCE. (#2305)

It is legal, but not generated by any SPIR-V producer: an OpCompositeExtract
with no indexes.  This is essentially just a copy of the object, so we
treat them that way.  We simply propagate the live variables of the
result to the operand.

Fixes https://crbug.com/919181.