David Neto 7d9140feb9 spirv-reader: Refactor tracking of locally-defined values
Based on suggestions from bclayton to use std::optional

Change-Id: I372472dbd5e239713eee5c2ec6ae6ea05fc384fa
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/102660
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2022-09-20 15:37:19 +00:00
..
2022-09-20 14:40:22 +00:00