runtime/vm/compiler/ffi/unit_tests/variadic_double/x64_win.expect

B(xmm0 double, rcx int64[double])
B(xmm1 double, rdx int64[double])
B(xmm2 double, r8 int64[double])
B(xmm3 double, r9 int64[double])
S+0 double
=>
xmm0 double