Some stress tests have a line like:

//@ requireOptions("-e", "let iterations=1e5") if ["mips"].include?($architecture)

to reduce the number of iterations on MIPS (since its bots are slower).

This causes bugs with the bytecode cache enabled, seemingly because issues with (lack of) double quoting:

stress/generator-cell-with-type.js.bytecode-cache: Could not open file: iterations=1e5
stress/generator-cell-with-type.js.bytecode-cache: Exception: ReferenceError: Can't find variable: let
stress/generator-cell-with-type.js.bytecode-cache: global code@[Command Line]:1:4

This is a blocker to enable bytecode cache support on MIPS.