When we detect a static switch, the optimizer finds the matching switch-
case and eliminates all the other switch-cases. It handles case
fall-through by scanning forward and looking for an unconditional break.
However, the inliner has an interesting quirk--it can replace `return`
statements inside of a switch with `continue` statements, since the body
of the inlined function has been wrapped with a for-loop to allow for
early exits. The optimizer does not recognize these continue statements
as exits from the switch (although they certainly qualify), so it
treats continues as fallen-through and keeps emitting switch-cases.
The dead-code elimination pass was actually doing us a favor here and
eliminating the excess code later. A flag was added to disable DCE in
order to reveal the problem in a test.
Change-Id: I8ff19fde5e32d0ab73d7c5411da40cb953a446f5
Bug: skia:11352
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/372956
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Surprisingly, this error is actually caught by our parser, which
interprets the default label in a unique way. From the parser comments:
"Requiring default: to be last (in defiance of C and GLSL) was a
deliberate decision. Other parts of the compiler may rely upon this
assumption."
The comment is true--we don't check for duplicate default switch-case
labels anywhere else in the code, just here in the parser.
We rely on this, so we should have a test for it.
Change-Id: I6df5c565aca4d4b8565b96638dce9504efc39ccc
Bug: skia:11340
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/372617
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Bug: skia:11335
Change-Id: I88c952cbfe2d2c5920e17675da1674928f37b982
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/371480
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Includes variables with and without initializers. Note that both the
.skvm and .stage output is incorrect right now. (No declarations for
global variables in .stage, and the initializer is dropped in .skvm).
Bug: skia:11295
Change-Id: Icb6d797616be6a1bc7cbdc9db4fefa7e30c65656
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/371143
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
None of these are legal in GLSL ES 1.0. Added a new test that previously
compiled without error. Started out with just assignment and equality,
then realized that sequence and ternary should be blocked, too.
Bug: skia:11323
Change-Id: I02691f819565afabeadbb12cab6c07acf40093f7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/370880
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
GLSL ES2 documentation on out parameters: "Evaluation of an out
parameter results in an l-value that is used to copy out a value when
the function returns."
The inliner does not do any alias checking when inlining an `out` param.
That is, passing the same variable to two separate `out` parameters
would not generate two distinct lvalues in the inlined code; it reuses
the same variable for each out-params in the inlined code.
(Amusingly, our CFG can fully optimize away this test code so it just
returns "red".)
Change-Id: Ib781d2cfdac54f01b6abe159af0c84ff24ff6976
Bug: skia:11326
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/370256
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Multi-dimensional arrays aren't legal in GLSL/SkSL, so this should be
caught and flagged as an error. The parser now verifies that a
variable's type isn't an array-type before accepting a `[` token to
open an array on the variable name.
This CL also refactors the IR generator's `convertArraySize` method to
make sure that various checks are made for all callers. Originally this
restructuring was used to verify array multi-dimensionality, but that
didn't detect errors inside struct declarations (which get no error
checking inside the IR generator) so the IR generator updates no longer
need to check the array dimensions.
Bug: skia:11322
Change-Id: Id33f4bdfb544019ddf995a8196c3c09cfe5a4525
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/369916
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
We now interpret any statement of the form `Type identifier...` as a
var-declaration and report errors as such. Previously, if a var-decl
statement generated an error during parse, we'd report errors as if it
were an expression-statement, which meant that slightly-invalid code
could return out-of-context, misleading errors.
Bug: skia:11287
Change-Id: I2c6cf2984760eb34593c80cb30f8c4e007d42027
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/370036
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Bug: skia:11314
Change-Id: I66476543462ae378a5bfb6cbd902dfa2f5fc45f5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/369917
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Disabled on Adreno 5xx/6xx as the tests do not pass on those GPUs:
http://screen/3Dkgs9syj37cjBV
Change-Id: Ib935d01e8f06dbfe7decd5cc4e52e0688b48be08
Bug: skia:11306, skia:11308
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/368805
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
This emits SkSL that is more-or-less what the compiler re-ingests when a
runtime effect is used to create a GrFragmentProcessor.
Change-Id: I0926be44fc4493e722a5edc18198e161e4192cde
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/367883
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Currently, SkSL is able to constant-propagate `x = x + constant` into
`x = constant` when the starting value of x is known. However, it is not
able to do the same optimization for `x += constant`. This test
demonstrates that once += is encountered, we lose track of x's value and
can no longer propagate its value.
(This is equally true of all the op-assignment operators, += -=
*= /= etc.)
Change-Id: I3523e96baf9a73982cf3b09f0d23b95adacf106b
Bug: skia:11192
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/368248
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
SkSL.
It would previously catch 1 / 0, but fail to detect x / 0.
Bug: skia:11051
Change-Id: I3adb5942cce03a7ad40a13a8ca5d5a7f2029d6ad
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/366720
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: Ethan Nicholas <ethannicholas@google.com>
This is enforced by ANGLE in Strict ES2 mode; we need to enforce it as
well.
Change-Id: I6e2f547ad8e0ce817742cf84659764cf6bce38b9
Bug: skia:11270
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/366339
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
We now catch this error at IR generation time; previously we'd send it
to the driver (where it would fail to compile).
Change-Id: I45890214ffa164be1c0f359320f942bc4dc479ca
Bug: skia:11265
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/365697
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
This uncovered a bug in Metal code generation of `matX *= matY` which is
now fixed. (It was emitting the helper function more than once.)
Change-Id: I0aeb0efe7ab5fbf5592a8ca6f4f5b50354d3d7f4
Bug: skia:11262
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/365489
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Previously, our only test was invoking `sin(1)` which is a pretty
ineffective test. Now, we test args and return types for all the basic
scalars/vectors/matrices.
Change-Id: I7d335303eef8b9c9c6cfef2265a15bbd9bd73e0c
Bug: skia:11246
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/363943
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
These are basic vector types, required by GLSL ES2, but we could not
create helper functions using them because they were missing from our
GrSLType enum. (This also prevented Runtime Effects from using these
types in helper functions.)
Change-Id: I78c328499e8ed90cb29c641b90ee59460a5a45de
Bug: skia:11246
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/364036
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
These tests have updated to return green on success, or red on failure.
Some tests were modified slightly to conform to ES2 limitations, or
split into separate ES2 and ES3 parts.
Change-Id: Ib47aeca217aef33f3c4b5999d93afed5d42a1e62
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/363876
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
We already had this trick for scalar integers, this extends it to
integer vectors. As with prior work in this area, it would be better to
detect this case and produce an error, but now we at least produce
consistent and well-defined results (rather than undefined signed
integer overflow).
Bug: skia:10932
Bug: oss-fuzz:29494
Change-Id: I45526fe96b6ea42c0e88b9862f6961b316810321
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/363962
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
The test has been split into an ES2 version and ES3 version; the ES2
side omits unsupported integer ops like << >> & | ^ %.
Change-Id: Iba16d469a477809b17a823b1c68ae8937624c68e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/362616
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
SkVMCodeGenerator was lacking support for the comma operator entirely;
this has now been implemented.
Change-Id: I9350f54e6ee52764c620116e6dbfe4ca3e9cd47e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/363096
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
This reverts commit 0492a744a5.
Reason for revert: Intel HD6000 + ANGLE DX9 fails the floor() test.
Original change's description:
> Add some SkSL intrinsics to our dm tests.
>
> This CL adds dm coverage for:
> - abs(half)
> - sign(half)
> - floor
> - ceil
>
> And creates test output for abs(int) and sign(int); these aren't covered
> by dm because they don't exist in ES2 and so are unsupported by Runtime
> Effects.
>
> Change-Id: Ia3e660408cef50dec8fa4b6bdc12906e96179f6e
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360419
> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
> Commit-Queue: John Stiles <johnstiles@google.com>
> Auto-Submit: John Stiles <johnstiles@google.com>
TBR=brianosman@google.com,ethannicholas@google.com,johnstiles@google.com
Change-Id: I62121efee9315b16e61e7d38659b6f629bdf8bd8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/362056
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
This CL adds dm coverage for:
- abs(half)
- sign(half)
- floor
- ceil
And creates test output for abs(int) and sign(int); these aren't covered
by dm because they don't exist in ES2 and so are unsupported by Runtime
Effects.
Change-Id: Ia3e660408cef50dec8fa4b6bdc12906e96179f6e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360419
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
This allows interface blocks in Metal to compile even if
`layout(binding=...)` is not specified. It will also be used in SPIR-V
in the followup CL, when an interface block is automatically synthesized
for top-level uniforms.
This CL also reorganizes the unit tests around uniforms a bit.
Change-Id: Ia898c536b454dda6f51677e232a8f6e6c3606022
Bug: skia:11225
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360778
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
This is a known deficiency of runtime effects, next step is to fix how
they manage function signatures to solve the problem.
Bug: skia:10939
Change-Id: Id934e0acdf774b03bd6edce78d7b2c077bdeae00
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360603
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Pre-cleanup as I start looking at how structs are parsed and handled in
the IR.
Bug: skia:11228
Change-Id: I6334d1073211cbbdf69ddffa8df420c45fd59fcc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/361059
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
This creates a helper function, _entrypoint, which invokes main() and
assigns its result into sk_FragColor. We also make sure to prevent
sk_FragColor from being dead-stripped from the code during IR
generation.
At present this is useful for allowing our SkSL test shaders to compile.
Change-Id: I2d7fab0e1959a77778ffdb18ca569e869bcaeece
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/358525
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
In most cases, this works properly and a `;` is emitted, but in one
particular case (int x, y;) we get nothing.
Change-Id: If88d92502f6a533284dd4e0f78daedaf1481ff3d
Bug: skia:11218
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/359558
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
In GLSL and SkSL, control statements don't require explicit braces
around single-statement children. That is, the `match = true` child
statement here doesn't need to be braced.
if (condition) match = true;
Because there are no braces, we never create a Block or a dedicated
SymbolTable here. This is normally not a problem, but the fuzzer
discovered that it can dump things into the symbol table inside a child
statement:
if (condition) int newSymbol;
This becomes problematic because the symbol name now outlives its block.
This means `newSymbol` can be referred to later, which should be illegal
(and can cause the optimizer to blow up since the structure is bogus).
There doesn't seem to be any reason to allow this code to compile; the
user can add an explicit scope here to make it reasonable, and it's
(almost) meaningless to declare a symbol that's instantly going to fall
out of scope. This code is now rejected with an error message.
Change-Id: I44778e5b59652d345b10eecd4c88efbf7d86a5e0
Bug: oss-fuzz:29849
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/358960
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Change-Id: I94094be7163a04bf48e86406230156a5433469b6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/359140
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Change-Id: I924ac75b5f8a397f7af7a06925ef0c9deba5c509
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/359141
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Change-Id: I8309940f8e40d0e84847ae272830896d010c39de
Bug: skia:11219
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/359138
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
The previous change caused varDeclarations() to sometimes return an
expression-statement. This only made sense in the context of being
called from Parser::statement(). Other places which called
varDeclarations() expect vardecls and nothing else.
Change-Id: I562657cadfa20dcd77b527f2dc43dca0c6bf389f
Bug: oss-fuzz:29845
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/358528
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
This allows us to write SkSL shaders which are valid both for use as
Runtime Effect, and for compilation with skslc targeting Metal.
Change-Id: I74e125d81865d4092e657a7d9948d2e72054bda5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/357777
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Added asserts that verify we don't try to emit the same struct or array
with two different memory layout rules. Some code paths were failing to
inspect the associated variable, leading to incorrect errors about the
attached offsets of members.
Added a test case that triggered that error, and also triggers the new
asserts.
Then, fixed the underlying cause: writing out the struct definition as a
side effect of accessing a member in getLValue().
Bug: skia:11205
Change-Id: I6e5fb76ea918ec9ff10425f2d519ddbc54404b27
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/357436
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
This will allow us to load these inputs for unit testing in `dm`.
Change-Id: Id256ba7c30d3ec94b98048e47af44cf9efe580d5
Bug: skia:11009
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/357282
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
A passing test returns solid green. Failing tests are written to
return solid red, but drawing any other color than green can be
interpreted as a test failure.
Additionally, tests which cannot compile as RuntimeEffects (due to
non-ES2-compatible features) have been split into an ES2-compatible part
and an ES3 part.
Change-Id: I3f53121d9de0ae4c4e7f1de3177d067811980b55
Bug: skia:11009
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/356999
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
This reverts commit b7e836cee9.
Change-Id: I3c39a928ba4a9a2863b616f2a500975294b03860
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/355980
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
This reverts commit ebf569004f.
Reason for revert: std::clamp is c++17
Original change's description:
> Support indexing by loop variables in SkVMGenerator
>
> Bug: skia:11096
> Change-Id: I25a91bacf1c3455ac67422fb0e59b9b152c2054a
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354667
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Mike Klein <mtklein@google.com>
TBR=mtklein@google.com,brianosman@google.com,johnstiles@google.com
Change-Id: I0590cf7fe626fb59be3381b5e8eb66a9a2a9e8cb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:11096
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/356056
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Bug: skia:11096
Change-Id: I25a91bacf1c3455ac67422fb0e59b9b152c2054a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354667
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
This enforces an even stricter version of the rules from GLSL ES 1.0
Appendix A, Section 5. Essentially, indices (to arrays, vectors,
matrices) must be made of literals, loop indices, and expressions made
of those two.
Bug: skia:10837
Bug: skia:11096
Change-Id: I437a5ed64da58e24d5991ddbde68859f5214e98b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354665
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
As far as I know, there shouldn't be a way to introduce a struct or enum
other than at global scope; the keywords are not accepted inside a
function body. In fact, I wasn't able to find a way to exercise these
code paths in practice. But we now have concrete assurance that any
possible type can be cloned into a symbol table safely; all Types are
either built-in (available everywhere by design) or are clonable.
Change-Id: I4b006b6cab995b3e598b683736ab9689828629c9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354664
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
