This CL removes the `fallthrough` parsing from the WGSL parser. The
`fallthrough` token is left so we can generate a nicer error message
in the case `fallthrough` is used.
Bug: tint:1644
Change-Id: Ifb23d78d1219cba9c64b80c9b098a248bc68e5c5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/109001
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Discard statements no longer affect the behavior or uniformity
analysis. Update the resolver, validator, and several tests to reflect
this.
Some E2E tests were removed as they had loops that are now considered
to be infinite.
Use the DemoteToHelper transform to emulate the correct semantics on
platforms where discard is (or may) terminate the invocation in a
manner that would affect derivative operations.
We no longer need the UnwindDiscardFunctions transform for HLSL, which
already implements the correct semantics. However, we still run the
DemoteToHelper transform for the HLSL backend due to issues with FXC's
handling of discard statements (see crbug.com/tint/1118).
Fixed: tint:1723
Change-Id: Ib49ff187919ae81c4af8675e1b66acd57e2ff7d2
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/109003
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
Now that expressions can only ever have the `Next` behavior,
short-circuiting operators will always reconverge.
Change-Id: Ib9fe4c774191b8a304fa7f7a6eafdfa6c6e6f18a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/108202
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: James Price <jrprice@google.com>
We now use the MergeReturn transform for SPIR-V, which is the only
backend that requires special handling to meet these function call
reconvergence requirements.
Fixed: tint:1627, tint:1726
Change-Id: I25f848f4b9ff0fd301b8a27a220bb09cdb2867ca
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107364
Commit-Queue: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
This CL adds support for `break-if` to Tint.
Bug: tint:1633, tint:1451
Change-Id: I30dfd62a3e09255624ff76ebe0cdd3a3c7cf9c5f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106420
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: dan sinclair <dsinclair@google.com>
Added support for reporting when pointer parameters point to non-uniform
values. Also add support for binary expressions results that may be
non-uniform.
Bug: chromium:1374534
Change-Id: Ia51557e3a984c69a39f2878c964bf07085599809
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106560
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
The `default` case selector has been implemented in Tint. This CL
updates the deprecation notice with that fact along with some more
information on replacements.
Bug: tint:1644
Change-Id: I883b4465d11d9696d46523d11e66c9a2dc2777ac
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106460
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This CL catches up the internals (along with a few error messages) to
say `initializer` instead of `constructor.
Bug: tint:1600
Change-Id: I8e56572c310d77da1130380bdd32b334f27c8e46
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/106462
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
This CL updates the internals to use AddressSpace instead of the old
StorageClass name.
Bug: tint:1404
Change-Id: Iecc208e839453437f4d630f65e0152206a52db7e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/104420
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
These have been warnings for multiple months.
Time to properly turn this on.
Bug: tint:880
Change-Id: I3b38f672309b5acd48c12a38dc5a1675f3c62470
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/103480
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Expand the Option argument paradigm to:
* Remove the requirement to always pass a 'type' parameter. Type inferencing is the easier, and increasingly common way to declare a variable, so this prevents a whole lot of `nullptr` smell which negatively impacts readability.
* Accept attributes directly as arguments, removing the `utils::Vector{ ... }` smell.
Rename `ProgramBuilder::VarOptionals` to `VarOptions`, and add equivalent `LetOptions`, `ConstOptions` and `OverrideOptions`.
Clean up all the calls to `Var()`, `Let()`, `Const()` and `Override()`:
* Use the `Group()` and `Binding()` helpers where possible
* Removing `nullptr` type arguments
* Replace attribute vectors with the list of attributes.
* Remove already-defaulted `ast::StorageClass::kNone` arguments.
* Remove already-defaulted `ast::Access::kUndefined` arguments.
Finally, remove the `GroupAndBinding()` helper, which only existed because you needed to pass attributes as a vector.
Change-Id: I8890e4eb0ffac9f9df2207b28a6f02a163e34d96
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99580
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
The `fallthrough` statement is being removed from WGSL. This CL adds
a deprecation warning into the current implementation to prepare folks
for the upcoming removal.
Bug: tint:1644
Change-Id: I599984b6a30b39312c4b794a9ecd70f0f626c759
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/98841
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Enable the parsing of 'const'.
Warn on use of module-scope 'let', and automatically replace with 'const'.
Fixed: tint:1580
Change-Id: I214aabca80686dc6b60ae21a7a57fbfb4898ea83
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/93786
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
We have `GlobalLet()`, `Let()`, `Var()`, so this just
keeps things consistent
Change-Id: Ie9f79b62e737a15b995c5a2b19f84621a5ac3cc9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/94604
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
This is currently identical to ast::VariableList, but once we break
ast::Variable up, this will become a different vector type.
Bug: tint:1580
Change-Id: Ib2db5772996a63cd1989e36f1034dc1fbd3b371a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/93601
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
This CL updates all of the Tint unittests to the new @stage shorter
syntax. This also updates the WGSL writer to emit the new short forms
instead of using the deprecated form.
Bug: tint:1503
Change-Id: I8c49e5319a19cccb5b4b5078f3ab39c50f31a9a8
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/92483
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
If the CallSiteRequiredToBeUniform tag is present, add the edge from
RequiredToBeUniform to a new diagnostic node for the function call,
instead of to the control flow coming out of the function call. Doing
the latter causes a false positive when a function both requires
uniform control flow and causes non-uniform control flow.
Bug: tint:880
Change-Id: Icade8f76302e8c21529502f5f945f1981acfc45a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/90582
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: James Price <jrprice@google.com>
Fixes a stack overflow when traversing particularly deep graphs.
This changes the iteration order which changes some of the diagnostic
notes, but the diagnostics are still correct and deterministic so it
does not matter.
Fixed: chromium:47418
Change-Id: I2def633b6d96d1525027f7929b0fa0a6fba0efeb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/90140
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Add additional nodes to capture places where control flow is changed
(if, switch, for, short-circuiting op, function call), and use these
to show the actual point at which control flow became non-uniform as a
result of a non-uniform value.
Do this recursively, to capture cases where control flow becomes
non-uniform after a function call statement.
Bug: tint:880
Change-Id: Ied92d690f98a5c11a1892eef500a50d0f123943d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/89862
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
If the function has no return statements, we need to do this to
capture the potential non-uniformity coming from nested function
calls.
This also removes the need to add explicit edges for discard
statements, so remove them.
Bug: tint:880
Change-Id: I88b1132faf35a6d36460ef353912f77a15f8abaa
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/89861
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
[chromium-style] auto variable type must not deduce to a raw pointer type
Fixes Dawn -> Tint roll
Change-Id: I1e249dd9891d2f93d631032c1721e8980d8cb343
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/90000
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Show the original source of non-uniformity when producing errors from
the uniformity analysis.
Bug: tint:880
Change-Id: Id386ae8fa5ff1b1443d54c0b5ef12ab76b3b3f13
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/89723
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
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>
This implements the uniformity analysis as currently described in the
WGSL specification. Uniformity issues are presented as warnings, and
will be switched to errors in a future release.
A follow-up patch will improve the error messages, which currently
just show the point at which a uniformity was detected.
In a future release, once we have obtained initial feedback from
users, uniformity issues will become errors.
Bug: tint:880
Change-Id: I7d0b3080932c786c5d50b55720fec6d19f00d356
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/88368
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Alan Baker <alanbaker@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
