RISC-V 32-bit: What does GCC do? (Part 1)

1. Introduction and Problem Statement

A good way to learn what a compiler really does when transforming C source code into a binary is to disassemble the binary and compare it with the C source code. While this was traditionally true for 8-bit microcontrollers, it is equally insightful for modern 32-bit RISC architectures like RISC-V (RV32I).

To test our 32-bit toolchain (GCC / Clang-LLVM), we will use the exact same Universal Test Corpus C source code:

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* Universal Test Corpus - Heterogeneous Architecture Analysis *