The following C function converts an argument of type src_t to a return value of type dst_t, where these two types are defined using typedef:

For execution on x86-64, assume that argument x is either in %xmm0 or in the appropriately named portion of register %rdi (i.e., %rdi or %edi). One or two instructions are to be used to perform the type conversion and to copy the value to the appropriately named portion of register %rax (integer result) or %xmm0 (floating-point result). Show the instruction(s), including the source and
destination registers.

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dest_t cvt (src_t x) { } dest_t y = (dest_t) x; return y;