OPTIMIZATIONS.md

Optimizations in compiler

• OPT0001: String comparison with empty string is optimized to s.len == 0
• OPT0002: Several string concatenations are optimized to a single one
• OPT0003: Match over constant strings is optimized to int comparisons
• OPT0004: Removal of unnecessary mem.to_heap calls
• OPT0005: Layout optimization for Option-like unions
• OPT0006: Constant folding for strings
• OPT0007: Inlining of small functions

Ideas

• In string interpolation with integers don't clone string for integer (in int_to_str), pass string with stack-data to str_intrp. Thanks to this we can avoid extra allocation for each integer in string interpolation.
• Optimize if expressions to if-else-if if possible, this way we can help to C compiler use jump table optimization.
• allocate constants with an array in static memory