Remove an old workaround that was kept around for ABI-compatibility on x86-64 between different LLVM versions. This means LLVM r67588 is required if you want to compile for x86-64, otherwise the backend will assert when you try to return e.g. struct { int i; char c; } from a function. (In particular, this is no longer compatible with LLVM 2.5) It also means that any code returning small structs on x86-64 will probably need to be recompiled in order to be linkable to code compiled with this change.

void main() {
asm {
    fmul;
    fmul ST, ST(1);
    fmul ST(1), ST;
    fmulp;
    fmulp ST(1), ST;

    fdiv;
    fdiv ST, ST(1);
    fdiv ST(1), ST;
    fdivp;
    fdivp ST(1), ST;
    fdivr;
    fdivr ST, ST(1);
    fdivr ST(1), ST;
    fdivrp;
    fdivrp ST(1), ST;

    fsub;
    fsub ST, ST(1);
    fsub ST(1), ST;
    fsubp;
    fsubp ST(1), ST;
    fsubr;
    fsubr ST, ST(1);
    fsubr ST(1), ST;
    fsubrp;
    fsubrp ST(1), ST;    
}
}