Commit Graph

4 Commits

Author SHA1 Message Date
Alastair Donaldson
64eaa9832f
spirv-fuzz: Skip OpTypeSampledImage when propagating up (#3976)
Fixes #3959.
2020-10-22 12:07:17 +01:00
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
72ea7bec4a
spirv-fuzz: Support identical predecessors in TransformationPropagateInstructionUp (#3689)
Support identical predecessors in TransformationPropagateInstructionUp.

A basic block may have multiple identical predecessors as follows:

%1 = OpLabel
OpSelectionMerge %2 None
OpBranchConditional %true %2 %2
%2 = OpLabel
...

This case wasn't supported before.
2020-08-14 12:29:36 +01:00
Vasyl Teliman
b7056e7e03
spirv-fuzz: FuzzerPassPropagateInstructionsUp (#3478)
Given an instruction (that may use an OpPhi result from the same block as an input operand), try to clone the instruction into each predecessor block, replacing the input operand with the corresponding OpPhi input operand in each case, if necessary.

Fixes #3458.
2020-08-11 10:24:32 +01:00