How do I optimize my C code?
Table of Contents
- 1 How do I optimize my C code?
- 2 Why do we need to optimize the code?
- 3 What are the code optimization techniques are independent of?
- 4 What is code optimization explain two techniques of it with example?
- 5 How to optimize your code using appropriate algorithms?
- 6 Why do we need to write optimized code?
- 7 How to optimize your code to make it run faster?
How do I optimize my C code?
COMPUTE BOUND
- CHOOSE A BETTER ALGORITHM. Think about what the code is really doing.
- WRITE CLEAR, SIMPLE CODE. Some of the very things that make code clear and readable to humans also make it clear and readable to compilers.
- PERSPECTIVE.
- UNDERSTAND YOUR COMPILER OPTIONS.
- INLINING.
- LOOP UNROLLING.
- LOOP JAMMING.
- LOOP INVERSION.
Why do we need to optimize the code?
The code optimization in the synthesis phase is a program transformation technique, which tries to improve the intermediate code by making it consume fewer resources (i.e. CPU, Memory) so that faster-running machine code will result. Optimization should increase the speed and performance of the program.
What are the ways in which compiler can improve a program without changing the function it computes?
Specific techniques
- Loop optimizations.
- Data-flow optimizations.
- SSA-based optimizations.
- Code generator optimizations.
- Functional language optimizations.
- Other optimizations.
- Interprocedural optimizations.
What are the code optimization techniques are independent of?
Machine independent optimization attempts to improve the intermediate code to get a better target code. The part of the code which is transformed here does not involve any absolute memory location or any CPU registers.
What is code optimization explain two techniques of it with example?
In this technique, As the name suggests, it involves eliminating the dead code. The statements of the code which either never executes or are unreachable or their output is never used are eliminated….Example-
| Code Before Optimization | Code After Optimization |
|---|---|
| i = 0 ; if (i == 1) { a = x + 5 ; } | i = 0 ; |
What is code optimization in embedded system?
Thus, the aspect of optimization plays a central role during the design of embedded systems: Code that is to be executed on an embedded system has to be optimized such that it gets by with the available and scarce resources and such that it simultaneously fulfills all requirements. Compiler-based code optimizations.
How to optimize your code using appropriate algorithms?
1. Optimize your Code using Appropriate Algorithm For any code you write, you should always take some time to think through and pick the right algorithm to use for your specific scenario. The problem we are going to analyze for this example is to find a maximum value of the function in a two dimensional segment.
Why do we need to write optimized code?
So we have a need to write and optimize our program keeping in mind resources e.g. processor’s time and main memory. Unroll small loops: Most of the times Compiler does this automatically, but it is a good habit of writing optimized codes. Matrix updations using this is very advantageous.
How to improve the performance of C++ code?
10 Tips for C and C++ Performance Improvement Code Optimization. 1. Optimize your Code using Appropriate Algorithm. For any code you write, you should always take some time to think through and pick the right 2. Optimize Your Code for Memory. 3. printf and scanf Vs cout and cin. 4. Using
How to optimize your code to make it run faster?
There is always more room for improvement to make your code run faster. Sometime we can use certain programming tricks to make a code run faster at the expense of not following best practices such as coding standards, etc. Try to avoid implementing cheap tricks to make your code run faster. 1. Optimize your Code using Appropriate Algorithm