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2 Commits

Author SHA1 Message Date
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