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LLVM to MIPS

Building an LLVM Backend for MIPS

Build a backend for LLVM from scratch!
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LLVM Basics

Learn the fundamental concepts of LLVM backends, including TableGen, target description files, and the overall architecture of LLVM’s code generation infrastructure.

MIPS Architecture

MIPS architecture, register file organization, calling conventions, and special hardware features that influence backend implementation.

3. Instruction Selection Master the process of translating LLVM IR to MIPS

assembly, including pattern matching, custom TableGen patterns, and optimization opportunities specific to MIPS.

4. Register Allocation Implement efficient register allocation strategies

for MIPS, handling register classes, spilling, and calling convention requirements.

5. Code Emission and ABI Learn how to emit proper MIPS assembly code,

manage relocations, and ensure compliance with the MIPS ABI specifications.

6. Optimization Passes Develop MIPS-specific optimization passes to

improve code quality, including instruction scheduling, peephole optimizations, and delay slot filling.

7. Testing and Debugging Set up comprehensive testing infrastructure using

LLVM’s integrated testing tools, and learn debugging techniques for backend development.

8. Performance Tuning

Fine-tune the backend for optimal performance, including instruction selection patterns, scheduling policies, and target-specific optimizations.

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