--- /dev/null
+#include<stdio.h>
+#include<assert.h>
+
+int main()
+{
+ int rd, rs, rt;
+ int result;
+
+ rs = 0x11777066;
+ rt = 0x55AA33FF;
+ result = 0x00;
+ __asm
+ ("cmp.eq.ph %1, %2\n\t"
+ "rddsp %0\n\t"
+ : "=r"(rd)
+ : "r"(rs), "r"(rt)
+ );
+
+ rd = (rd >> 24) & 0x03;
+ assert(rd == result);
+
+ rs = 0x11777066;
+ rt = 0x11777066;
+ result = 0x03;
+ __asm
+ ("cmp.eq.ph %1, %2\n\t"
+ "rddsp %0\n\t"
+ : "=r"(rd)
+ : "r"(rs), "r"(rt)
+ );
+ rd = (rd >> 24) & 0x03;
+ assert(rd == result);
+
+ return 0;
+}