Learn about LLVM Machine Code Analyzer
Introduction
Background
Run MCA with Arm assembly
Use MCA with Compiler Explorer
Next Steps

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About this Learning Path

Skill level:  Introductory
Reading time:  1 hr
Last updated:  09 Jan 2025
Skill level:
  Introductory
Reading time:
  1 hr
Last updated:
  09 Jan 2025
Author:Rin Dobrescu, Arm
Arm IP:Neoverse Cortex-A
Tags: Performance and Architecture Linux Windows macOS assembly llvm-mca
Author:
Rin Dobrescu, Arm
Arm IP:
Neoverse Cortex-A
Tags:
Performance and Architecture Linux Windows macOS assembly llvm-mca

Who is this for?

This is an introductory topic for developers who want to diagnose performance issues of Arm programs using LLVM Machine Code Analyzer (MCA) and Compiler Explorer.

What will you learn?

Upon completion of this learning path, you will be able to:

  • Estimate the hardware resource pressure and the number of cycles taken to execute your code snippet using llvm-mca.
  • Describe how this estimate can help diagnose possible performance issues.
  • Use Compiler Explorer to run llvm-mca.

Prerequisites

Before starting, you will need the following:

  • Familiarity with Arm assembly.
  • LLVM version 16 or newer, which includes support for Neoverse V2.
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