This CL adds diagnostics for the ast nodes which would come before
override substitution. The struct member attributes are marked as ICE as
they should never be encountered. The Struct declaration is ignored as
we will get the `type::Struct` from the semantic usage.
Bug: tint:1718
Change-Id: I8c51787f1455d02e822f222f43a9606a844eed3c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116549
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
This Cl updates the flow node tests to compare against a disassembled
output instead of explicit expect statements. This makes it easier to
see the structure of the IR and to determine any changes.
Bug: tint:1718
Change-Id: I5b8ab42ada4ba902e8937099c7058a39533f2010
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116548
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This CL expands the disassembler output and makes a bit more useful. The
case selector value is changed to an `ir::Constant` instead of the
`constant::Value` to make disassembly easier. The `BuilderImpl` is
updated to not fail in the face of missing implementation but continue
as best as possible.
Bug: tint:1718
Change-Id: I8b275a19bccbb02bb785d311778198bb0c9e0456
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116547
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
When branching to a different flow node, there is a need to pass
arguments to the branch. These arguments could be the value of the
return.
This extracts a `Branch` out to an object with a target and arguments
and then updates the IR to use the new Branch structure.
Bug: tint:1718
Change-Id: Ic8de8046f58056327a04c8afe3b597810c80ccdb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116546
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This CL converts the case selectors over from ast CaseSelectors to IR
CaseSelectors. They work the same way in that a `nullptr` value signals
a `default` selector but they only store the resulting `constant::Value`
instead of the `ast::Expression`.
Bug: tint:1718
Change-Id: Ied62d661e03a7f8da4c1e1bdaccc04f21ab38111
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116364
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
For logical binary expressions that can be short-circuited, if the rhs
tree contained a mix of constant and runtime expressions, we would
erroneously mark the node as runtime, although some of its children were
resolved as kNotEvaluated. This would then fail during backend
generation.
This is a fork of 115820, addressing review comments, as amaiorano is OOO this week.
Bug: chromium:1403752
Bug: tint:1581
Change-Id: I18682c7fe1db092d280390881ff86b3c0db23e9b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116020
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
This CL updates ir:Value to track the instructions which use a given
value. The instructions add their usage upon construction. This
necessitates making the values non-const in a lot of places as they get
changed by the instruction.
The `result` value is moved up to the base instruction class as it
should exist in all instructions.
Bug: tint:1718
Change-Id: Id7ab6e43d48caea502756d274dd6be2e1e4240f1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116141
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Nothing uses these, and the mutability of these breaks
const-correctness.
Switch functions that used to return `const utils::Vector<T, N>&`
to returning `utils::VectorRef<T>`. Removes the templated size from the
public interface.
Replace all `const utils::VectorRef<T>&` with `utils::Vector<T>`,
there's no point in using yet another level of pointer indirection.
Change-Id: Ib96e3171500606d9afffbb13f40023552a74fffc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/113021
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
This CL updates the if and switch nodes to store the condition value in
a register. The EmitExpression is updated to return a Register and the
builder updated to emit the expressions for the if, break-if, while,
and switch expressions.
Bug: tint:1718
Change-Id: Ie710812c74e8b9423a4aa997db451d9cdf304feb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/110784
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This CL renames the `Build` method in the test helper to be
`CreateBuilder` to maek the intention clearer. A second,
`CreateEmptyBuilder` is provided to allow for easier testing of
expressions.
The `current_flow_block` and `builder` are moved to public so they can
be used/updated during testing.
Bug: tint:1718
Change-Id: I663d4c7a3c76e6bf5396ca05f54fe634d35d0d56
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/110781
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
When emitting the if true/false blocks we attempt to set the merge
target if the start block hasn't branched. This isn't right, as if the
block branched to other control flow, then that isn't the end of the
flow chain for that branch. We have to look at the current branch
target, and, if it exists, branch that to the if merge block.
Bug: tint:1718
Change-Id: Ifcafc4dd12c805efbee9d1dbcbc42c6add8f06a9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107861
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
This CL adds the ability to dump an IR graph to a dot file. The
`--dump-ir-graph` option is added to the main tint command. The IR code
is moved behind a TINT_BUILD_IR flag in order to allow the GN build to
continue to build the tint program.
Bug: tint:1718
Change-Id: I0953fe2a59a34c21bb6cd288cb90e9d0298af793
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107860
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
This CL updates the flow node to track the nodes which are inbound
to the current target. This allows to fix an issue with a loop,
after a continuing with a break, properly eliminating dead code.
This also allows always providing the merge target for an if, it
just knows if it's disconnected by having zero inbound branches.
Bug: tint:1718
Change-Id: Ia9b9dbc734bf1e9cd0c829093c0cb1e470efb32e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107800
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
This CL starts adding the basics for an IR for Tint. The IR is
a lower level representation then the AST with several of the
restrictions removed. For example, the IR is mutable, is a DAG
instead of a tree, and removes a number of WGSL constructs to
simplify transforms.
Bug: tint:1718
Change-Id: I6a16ac3116cee31410896c3a0424af7b41f958c3
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/105800
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
