[LLVMdev] customized output of double load/store on ppc32

[Scott Graham]

Hi

For .LL like:

    define void @Func()
    {
        %var1 = alloca double
        store double 0x40bb580000000000, double* %var1
        ret void
    }

ppc32 output is:

    ...
    lis 3, 16571
    ori 3, 3, 22528
    li 4, 0
    stw 3, 8(1)
    stw 4, 12(1)
    ...

I'm using the PPC backend's output as the "bytecode" for an interpreter
that I would like to be able to run on both little- and big-endian
platforms. The split stw's mean that i32s of the f64 are swapped in
memory on little-endian (thus foiling native-code interop).

Can anyone suggest where I should look to lower this store differently?
(ideally by libcall-ing a function that takes 2 i32s).

thanks,
scott