The requirement for structured programs dates back from the asm.js hack. Both relooper and stackifier are still workarounds. CPUs do not require structure progr

The requirement for structured programs dates back from the asm.js hack. Both relooper and stackifier are still workarounds. CPUs do not require structure programs at all. Unless there is a really good reason this still looks a hack driven by limitations of the underlying code generation. I understand that some compilation passes are easier/cheaper with structured control. But then... why are not LLVM and GCC enforcing them as well (at least their roadmaps)?