Here's a benchmark of all modern 6502 C compilers: https://thred.github.io/c-bench-64/ - do note that binary sizes also include the size of the standard libraries, which means it is not a full picture of the code generation density of the compilers themselves.
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Here's a benchmark of all modern 6502 C compilers: https://thred.github.io/c-bench-64/ - do note that binary sizes also include the size of the standard libraries, which means it is not a full picture of the code generation density of the compilers themselves.