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#include "io.h" int main(void) { long long rd, rt, result; rt = 0x123456789ABCDEF0; result = 0x0012003400560078; __asm ("preceu.qh.obl %0, %1\n\t" : "=r"(rd) : "r"(rt) ); if (result != rd) { printf("preceu.qh.obl error\n"); return -1; } return 0; }