Code Efficiency Tradeoffs

Make tradeoffs when generating optimized code

Improve the efficiency of the generated code by removing code that performs subnormal number calculations or guards against a possible mismatch between simulation and code generation results.

Model Settings

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Code Efficiency

Level	Optimization level for generated code
Priority	Control application of optimizations based on priority
Remove Code from Tunable Parameter Expressions That Saturate Out-of-Range Values	Control generation of protective code that saturates out-of-range tunable parameter expression values
Remove code that protects against division arithmetic exceptions	Control generation of protective code for division arithmetic exceptions
Remove code from floating-point to integer conversions with saturation that maps NaN to zero	Control generation of protective code that handles floating-point to integer conversion for `NaN` values
Remove code from floating-point to integer conversions that wraps out-of-range values	Control generation of wrapping code that handles out-of-range floating-point to integer conversion values
Code replacement libraries	Libraries that define code optimizations for specific target environment
Simulation behavior for denormal numbers	Option to emulate hardware handling of denormal numbers

Topics

Design Techniques to Optimize Models for Efficient Code Generation
Apply design tools and techniques to optimize a model for code generation.
Optimize Generated Code Using Code Efficiency Tools and Techniques
When generating production code from your model to deploy into a real-time embedded system, code efficiency is an important consideration.
Configure Model for Code Generation Objectives by Using Code Generation Advisor
Use the Code Generation Advisor to check your model against code generation objectives.
Generate Efficient Code by Setting Model Configuration Parameters
Choose the efficiency level and priorities for your generated code.
Remove Code for Out-of-Range Floating Point to Integer Conversions
If the input values in your application are in the range of the output type, remove code for out-of-range floating-point to integer conversions.
Remove Code That Maps NaN to Integer Zero
If input values of NaN do not exist in your application, specify that the code generator remove code that maps NaN to integer zero.
Disable Nonfinite Checks or Inlining for Math Functions
Use code replacement library (CRL) customization entries to selectively disable nonfinite checks for math functions and inlining of math functions.
Subnormal Number Execution Speed
Minimize the possibility of execution slowdowns or overruns due to subnormal number calculation latency.
Remove Code That Guards Against Division Exceptions for Integers and Fixed-Point Data
Optimize the generated code by removing code that protects against division by zero and overflows in division INT_MIN/-1 operations for integers and fixed-point data.
Remove Code from Tunable Parameter Expressions That Saturate Against Integer Overflow
Remove code that prevents integer overflow of tunable expression parameters for efficiency benefits.