54 std::unique_ptr<Expression> VariableReference::copy_constant(const IRGenerator& irGenerator,  in copy_constant()  argument
59             return std::unique_ptr<Expression>(new IntLiteral(irGenerator.fContext,  in copy_constant()
64                                                                irGenerator.fContext,  in copy_constant()
68             return std::unique_ptr<Expression>(new BoolLiteral(irGenerator.fContext,  in copy_constant()
75                 args.push_back(copy_constant(irGenerator, arg.get()));  in copy_constant()
83                                                            copy_constant(irGenerator,  in copy_constant()
91 std::unique_ptr<Expression> VariableReference::constantPropagate(const IRGenerator& irGenerator,  in constantPropagate()  argument
96     if (irGenerator.fKind == Program::kPipelineStage_Kind &&  in constantPropagate()
100         return irGenerator.getArg(fOffset, fVariable.fName);  in constantPropagate()
104         return copy_constant(irGenerator, fVariable.fInitialValue);  in constantPropagate()
109         return copy_constant(irGenerator, exprIter->second->get());  in constantPropagate()