GDC and leaf functions

[Manu]

I'm doing a lot of experiments with GDC, and I'm noticing that leaf
functions are still generating a stack frame and doing pointless work...

int leaf() pure nothrow
{
  return 0;
}

compile with -frelease -finline -O3, etc

I expect 2 opcodes, load immediate and return, but I get a whole pointless
function including memory access O_O

Any ideas? Is this normal?
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