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  • Simon Marlow's avatar
    gcc is getting smarter, so we need to hit it with a bigger stick · 7aede9b1
    Simon Marlow authored
    On x86_64 we are using C argument registers for global registers in
    the STG machine.  This is always going to be problematic when it comes
    to making C calls from STG and compiling via C.  Prior to GCC 4.1.0
    (approx) it was possible to just assign the argument expressions to
    temporaries to avoid a clash.  Now, we need to add an extra dummy
    function call as a barrier between the temporary assignments and the
    actual call.  The dummy call is removed by the mangler.