tree 320c7f69f8c4845183f8b4da2f10869feb33d35c
parent f2b8d2b1abd29cd9c345b4731698295f738575f7
author James Price <jrprice@google.com> 1670351539 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1670351539 +0000

tint: Add PreservePadding transform

This is used to ensure that assignments to host-visible memory do not
modify padding bytes in structures and arrays. We decompose
assignments of whole structure and array types into member-wise or
element-wise copies, using helper functions.

This is used in all backends except HLSL, which already decomposes
memory accesses.

Bug: tint:1571
Change-Id: Id6de2f917fb80151cc654a7e1c8413ae956f0d61
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/112720
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>