We don't want to replace builtins that are constant-expression
evaluated, as the replacement cannot be used as a constant expression.
Fixed: tint:1667
Change-Id: I554d9884fc41890247ee64b47a70621be5fcdbe5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107680
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>