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3 Commits

Author SHA1 Message Date
Alastair Donaldson
bf1a11dab7
spirv-fuzz: Wrap early terminators before merging returns (#3925) 
Incorporates some other fixes for issues that were brought to light by
adding this functionality.

Fixes #3717.
Fixes #3924.
 2020-10-16 19:29:39 +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