tree a95dde4dba0b995b71b72141869170075f82bd12
parent 874b61f1badfe275c480d1dcb6d32b867391de73
author James Price <jrprice@google.com> 1652306715 +0000
committer James Price <jrprice@google.com> 1652306715 +0000

tint: Show the reason for a uniformity requirement

When producing an error from the uniformity analysis, add notes to
show the underlying reason for the uniformity requirement.

For function calls that are required-to-be-uniform, show the innermost
builtin call that has the requirement.

For function parameters that are required-to-be-uniform, recurse into
that function to show where its requirement comes from.

Add some new tests to specifically test the error messages.

Bug: tint:880
Change-Id: Ib166fdeceaffb156a3afc50ebc5a4ad0860dc002
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/89722
Reviewed-by: Ben Clayton <bclayton@google.com>