tree 85b53be15e4e3b29b3d0c7a0a7ae645a202bf044
parent c6bcab02fd89d545ab7dd3a68ba8d74cbced43fc
author Ben Clayton <bclayton@google.com> 1626178693 +0000
committer Ben Clayton <bclayton@google.com> 1626178693 +0000

[resolver]: Begin constant value evaluation

Move the bulk of the constant evaulation logic out of transform::FoldConstants and into Resolver and sem::Expression.

transform::FoldConstants now replace TypeConstructor nodes that have a constant value on the expression.

This is ground work to:
* Cleaning up the HLSL uniform buffer indexing, which is `/` and `%` arithmatic heavy
* Prepares us to handle `constexpr` when it lands in the spec
* Provide a centralized place to do constant evaluation, instead of the
  having similar logic scattered around the codebase.

Change-Id: I3e2f542be692046a8d243b62a82556db519953e7
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/57426
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: James Price <jrprice@google.com>