Hi,

function_value_regno_p hook implementation for i386 target
(ix86_function_value_regno_p) always returns false for DX register.
But DX register is used to return 128 bit values an AX:DX. Is it
intentional or a bug?

I'm asking because it causes problem with mode switching which fails
if see 'use' insn at the end of the function whose argument is not a
register holding returned value. I'm choosing what should be fixed
here, a mode switching or a hook implementation.

Thanks,
Ilya

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