tree a7a6c3f319920f5d411a7b3a69916229cfd54dbe
parent 194e0cca3b6855295648980b061d8bdc6b3234fc
author dan sinclair <dj2@everburning.com> 1592859144 +0000
committer David Neto <dneto@google.com> 1592859144 +0000

[spirv-writer] Only add used variables to entry point.

This Cl updates the entry point code to only output Input/Output
variabes which are referenced by the function instead of all
Input/Output variables.

Bug: tint:28
Change-Id: Idc429e02cac8dac7fc7b609cbd7f88039695829e
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/23623
Reviewed-by: David Neto <dneto@google.com>