asmjs had an i32 type by (ab)using JS semantics and a common jit optimisation: bitwise ops are defined for 32 bits two’s complement integer. So x|0 necessarily

asmjs had an i32 type by (ab)using JS semantics and a common jit optimisation: bitwise ops are defined for 32 bits two’s complement integer. So x|0 necessarily results in an i32.