Avoid generating OpPhi on void types, and allow the transformation to
take place on regions that produce pointer and sampled image result
ids if such ids are not used after the region.
Fixes#3787.
* validation: tighter validation of multisampled images
- if MS=1, then Sample image operand is required
- Sampling operations are not permitted when MS=1
Fixes#4057, #4058
* Fail early for multisampled image for sampling, dref, gather
This scripts fails to run in Python 2. For systems that have both
Python 2 and 3 installed, depending on your PATH the existing code may
or may not run. Explictly using Python 3 to avoid this.
* validate StorageImageMultisampled capability
The StorageImageMultisampled capability is required when declaring
an image type with with Multisampled==1 and it's a storage image (Sampled == 2)
Fixes#4061
* Allow SubpassData with Multisampled and Sampled==2
Similar to [1] DCE should be ran when this extension is enabled to
prevent unused bindings from showing up (in particular atomic counters
attached to buffers).
[1]: https://github.com/KhronosGroup/SPIRV-Tools/pull/4047
The eliminate dead member pass is written assuming that the index to an
OpAccessChain will be a 32-bit integer or 64-bit integer. That is
changed to work for any width 64-bits or less.
Fixes https://crbug.com/1151727
* Add validation for ray tracing builtins
- Remove existing InstanceId testing that was combined with VertexId in awkward ways.
- Rather than adding a new set of functions for each ray tracing builtin, add
an error table that maps the builtin ID to the 3 common VUIDs for each builtin
(I could see this being extended for other builtins in the future).
- add F32 matrix validation function
- augment existing PrimitiveId validation to verify Input storage class for the
RT stages this is accepted in, and correct the list of stages that it is actually
accepted in (only Intersection / Any Hit / Closest Hit)
* add testing for ray tracing builtins
- remove exising InstanceId testing as it was tangled in with VertexId in now weird ways
and combine it with the new tests
- add testing for ray tracing builtins
- builtins accepted in the same stages and of the same types are combined into test functions
- add some new matrix types to the code generator so they can be used for testing
This instruments ImageRead, ImageWrite and ImageFetch when applied to
texel buffers.
Also add new (but not yet generated) buffer OOB error codes differentiated
for VUID classification.
* BuildModule: optionally avoid adding new OpLine instructions
Fixes#4029 for my use case
* Fix formatting
* Create last_line_inst_ only if doing extra line tracking
* Update to final ray tracing extensions
Drop Provisional from ray tracing enums
sed -ie 's/RayQueryProvisionalKHR/RayQueryKHR/g' **/*
sed -ie 's/RayTracingProvisionalKHR/RayTracingKHR/g' **/*
Add terminator support for SpvOpIgnoreIntersectionKHR and SpvOpTerminateRayKHR
Update deps for SPIRV-Headers
* Update capability dependencies for MeshShadingNV
Accommodate https://github.com/KhronosGroup/SPIRV-Headers/pull/180
MeshShadingNV: enables PrimitiveId, Layer, and ViewportIndex
Co-authored-by: Daniel Koch <dkoch@nvidia.com>
Fix buffer oob instrumentation for matrix refs.
Matrix stride decoration is not on matrix type but is a member decoration
on the enclosing struct type. Also correctly apply matrix stride depending
on row or column major.
spirv-opt has a bug that `DebugInfoManager::AddDebugValueWithIndex()` does not
preserve `Indexes` operands of
[DebugValue](https://www.khronos.org/registry/spir-v/specs/unified1/OpenCL.DebugInfo.100.html#DebugValue).
It has to preserve all of those `Indexes` operands, but it preserves only the first index
operand.
This PR removes `DebugInfoManager::AddDebugValueWithIndex()` and lets the spirv-opt
use `DebugInfoManager::AddDebugValueForDecl()`.
`DebugInfoManager::AddDebugValueForDecl()` preserves the Indexes operand correctly.
Don't pass a constructed string as an argument to
ValidateNotCalledwithExecutionModel. That method is captured via
std::bind and it ends up using lots of stack space.
Instead, pass in:
- a Vulkan validation unique ID as an integer instead,
(with -1 meaning no VUID), and
- the const char* for the explanator text.
in 3943 the new tests should have failed, but didn't due to the AnyVUID
check not handling case with trailing whitespace. Added trimming to handle
it as easily might happen again in future
The front-end language compiler would simply emit DebugDeclare for
a variable when it is declared, which is effective through the variable's
scope. Since DebugDeclare only maps an OpVariable to a local variable,
the information can be removed when an optimization pass uses the
loaded value of the variable. DebugValue can be used to specify the
value of a variable. For each value update or phi instruction of a variable,
we can add DebugValue to help debugger inspect the variable at any
point of the program execution.
For example,
float a = 3;
... (complicated cfg) ...
foo(a); // <-- variable inspection: debugger can find DebugValue of `float a` in the nearest dominant
For the code with complicated CFG e.g., for-loop, if-statement, we
need help of ssa-rewrite to analyze the effective value of each variable
in each basic block.
If the value update of the variable happens only once and it dominates
all its uses, local-single-store-elim pass conducts the same value update
with ssa-rewrite and we have to let it add DebugValue for the value assignment.
One main issue is that we have to add DebugValue only when the value
update of a variable is visible to DebugDeclare. For example,
```
{ // scope1
%stack = OpVariable %ptr_int %int_3
{ // scope2
DebugDeclare %foo %stack <-- local variable "foo" in high-level language source code is declared as OpVariable "%stack"
// add DebugValue "foo = 3"
...
Store %stack %int_7 <-- foo = 7, add DebugValue "foo = 7"
...
// debugger can inspect the value of "foo"
}
Store %stack %int_11 <-- out of "scope2" i.e., scope of "foo". DO NOT add DebugValue "foo = 11"
}
```
However, the initalization of a variable is an exception.
For example, an argument passing of an inlined function must be done out of
the function's scope, but we must add a DebugValue for it.
```
// in HLSL
bar(float arg) { ... }
...
float foo = 3;
bar(foo);
// in SPIR-V
%arg = OpVariable
OpStore %arg %foo <-- Argument passing. Out of "float arg" scope, but we must add DebugValue for "float arg"
... body of function bar(float arg) ...
```
This PR handles the except case in local-single-store-elim pass. It adds
DebugValue for a store that is considered as an initialization.
The same exception handling code for ssa-rewrite is done by this commit: df4198e50e.
This fixes https://github.com/KhronosGroup/SPIRV-Tools/issues/3873.
In the presence of variable pointers, the reaching definition may be
another pointer. For example, the following fragment:
%2 = OpVariable %_ptr_Input_float Input
%11 = OpVariable %_ptr_Function__ptr_Input_float Function
OpStore %11 %2
%12 = OpLoad %_ptr_Input_float %11
%13 = OpLoad %float %12
corresponds to the pseudo-code:
layout(location = 0) in flat float *%2
float %13;
float *%12;
float **%11;
*%11 = %2;
%12 = *%11;
%13 = *%12;
which ultimately, should correspond to:
%13 = *%2;
During rewriting, the pointer %12 is found to be replaceable by %2.
However, when processing the load %13 = *%12, the type of %12's reaching
definition is another float pointer (%2), instead of a float value.
When this happens, we need to continue looking up the reaching definition
chain until we get to a float value or a non-target var (i.e. a variable
that cannot be SSA replaced, like %2 in this case since it is a function
argument).
Adds some functions that allow a fuzzer pass to check whether it is
spiralling out of control and exit early. The fuzzer pass for adding
bit instruction synonyms now uses this. Also make many methods in
FuzzerContext const.
This PR fixes a bug related to the transformation applicability.
When the OpNot case was implemented, its opcode was not
added to the list of supported bit instructions in IsApplicable.
So, the changes made are the following.
- Add OpNot to the list of supported bit instructions.
- Update the tests.
