tree 9662f784dd36242f1a91dd6712d49d898954544b
parent 14b5fb6f1742a8a0ece928a56019e0fd153eb46e
author dan sinclair <dsinclair@chromium.org> 1666920178 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1666920178 +0000

Start adding IR.

This CL starts adding the basics for an IR for Tint. The IR is
a lower level representation then the AST with several of the
restrictions removed. For example, the IR is mutable, is a DAG
instead of a tree, and removes a number of WGSL constructs to
simplify transforms.

Bug: tint:1718
Change-Id: I6a16ac3116cee31410896c3a0424af7b41f958c3
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/105800
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>