Commit Graph

7 Commits

Author SHA1 Message Date
Alastair Donaldson
6382cbb497
spirv-fuzz: Avoid invalidating analyses in various transformations (#4205)
Avoids invalidating all analyses in transformations that add
constants, OpUndef and global and local variables.
2021-03-20 22:48:02 +00:00
Alastair Donaldson
fcb22ecf0f
spirv-fuzz: Report fresh ids in transformations (#3856)
Adds a virtual method, GetFreshIds(), to Transformation. Every
transformation uses this to indicate which ids in its protobuf message
are fresh ids. This means that when replaying a sequence of
transformations the replayer can obtain a smallest id that is not in
use by the module already and that will not be used by any
transformation by necessity. Ids greater than or equal to this id
can be used as overflow ids.

Fixes #3851.
2020-09-29 22:12:49 +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
a3b0adc306
spirv-fuzz: Add is_irrelevant parameter (#3563)
Part of #3177.
Adjusts functions to create constants.
2020-07-21 08:59:13 +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
dfcb5a1e10
Refactor fuzzer transformations (#2694)
Introduced abstract class for transformations, and refactored all transformations to inherit from this abstract class.
2019-06-25 20:49:46 +01:00
Alastair Donaldson
620197bd65
Add fuzzer pass that adds useful constructs to a module (#2647)
This new pass adds some basic ingredients to a module on which future
passes are likely to depend, such as boolean constants and some
specfic integer and floating-point values.  This is not a fuzzer pass
in the true sense in that it does not employ randomization, but it
makes sense to define it as a fuzzer pass since it is the first of a
number of transformations passes that the fuzzer will run on a module.
2019-06-04 14:55:00 +01:00