This transform was attempting to remove builtins with no side
effects, such as a call with abstract int/float args, which is unhandled
by this transform. For example, this would cause the transform to ICE:
_ = clamp(1, 2, 3);
Fixes ClusterFuzz issue crbug.com/1348739.
Bug: chromium:1348739
Change-Id: Ie355eb36c6c020417c2d93f2dc434c11dbb72d1f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/97880
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>