Commit Graph

14 Commits

Author SHA1 Message Date
alan-baker
d35a78db57
Switch SPIRV-Tools to use spirv.hpp11 internally (#4981)
Fixes #4960

* Switches to using enum classes with an underlying type to avoid
  undefined behaviour
2022-11-04 17:27:10 -04:00
Alastair Donaldson
9c4481419e
spirv-fuzz: Allow inapplicable transformations to be ignored (#4407)
spirv-fuzz features transformations that should be applicable by
construction. Assertions are used to detect when such transformations
turn out to be inapplicable. Failures of such assertions indicate bugs
in the fuzzer. However, when using the fuzzer at scale (e.g. in
ClusterFuzz) reports of these assertion failures create noise, and
cause the fuzzer to exit early. This change adds an option whereby
inapplicable transformations can be ignored. This reduces noise and
allows fuzzing to continue even when a transformation that should be
applicable but is not has been erroneously created.
2021-07-28 22:59:37 +01:00
Alastair Donaldson
c0833ce620
spirv-fuzz: Remove destructors from FuzzerPass subclasses (#4209)
Subclasses of FuzzerPass no longer needlessly override the default
destructor of FuzzerPass.
2021-03-23 13:31:27 +00:00
Vasyl Teliman
36185f8b09
spirv-fuzz: Move IRContext parameter into constructor (#3837)
This PR converts IRContext parameter in fact managers into a class field. Part of #3698.
2020-09-24 12:27:59 +01:00
Stefano Milizia
2945963cce
spirv-fuzz: Consider all ids from dead blocks irrelevant (#3795)
This PR modifies the FactManager methods IdIsIrrelevant and GetIrrelevantIds so
that an id is always considered irrelevant if it comes from a dead block.

Fixes #3733.
2020-09-18 11:45:02 +01:00
Vasyl Teliman
be099cde1f
spirv-fuzz: Fix width in FuzzerPassAddEquationInstructions (#3685)
Fixes FuzzerPassAddEquationInstructions to check whether certain int/float type widths are supported to avoid creating unsupported types.

Fixes #3669.
2020-08-12 16:39:23 +01:00
Vasyl Teliman
ab4fe12a46
spirv-fuzz: Fix memory bugs (#3622) 2020-07-30 16:51:29 +01:00
Vasyl Teliman
d6306537dc
spirv-fuzz: Don't use default parameters (#3583)
Fixes #3177.
2020-07-24 07:57:49 +01:00
Vasyl Teliman
680c77fa6c
spirv-fuzz: Add support for OpBitcast to TransformationEquationInstruction (#3523)
Fixes #3514.
2020-07-16 14:07:09 +01:00
Vasyl Teliman
b0206b0f6e
spirv-fuzz: Add support for OpConvert to TransformationEquationInstruction (#3472)
Part of #3440.
2020-07-16 11:59:05 +01:00
Alastair Donaldson
8d4261bc44
spirv-fuzz: Introduce TransformationContext (#3272)
Some transformations (e.g. TransformationAddFunction) rely on running
the validator to decide whether the transformation is applicable.  A
recent change allowed spirv-fuzz to take validator options, to cater
for the case where a module should be considered valid under
particular conditions.  However, validation during the checking of
transformations had no access to these validator options.

This change introduced TransformationContext, which currently consists
of a fact manager and a set of validator options, but could in the
future have other fields corresponding to other objects that it is
useful to have access to when applying transformations.  Now, instead
of checking and applying transformations in the context of a
FactManager, a TransformationContext is used.  This gives access to
the fact manager as before, and also access to the validator options
when they are needed.
2020-04-02 15:54:46 +01:00
Alastair Donaldson
1af1df3b23
spirv-fuzz: Fix vector width issue in 'add equation instructions' pass (#3223)
Fixes #3213.
2020-03-12 10:56:11 +00:00
Alastair Donaldson
da4cd21485
spirv-fuzz: Use better function name (#3207)
Changes FuzzerPass::MaybeAddTransformationBeforeEachInstruction to
FuzzerPass::ForEachInstructionWithInstructionDescriptor.

Fixes #3184.
2020-03-06 12:25:57 +00:00
Alastair Donaldson
044ecc0b2c
spirv-fuzz: Fuzzer pass to add equation instructions (#3202)
This introduces a new fuzzer pass to add instructions to the module
that define equations, and support in the fact manager for recording
equation facts and deducing synonym facts from equation facts.

Initially the only equations that are supported involve OpIAdd,
OpISub, OpSNegate and OpLogicalNot, but there is scope for adding
support for equations over various other operators.
2020-03-04 14:54:08 +00:00