1 //===-- unorddf2vfp.S - Implement unorddf2vfp ------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "../assembly.h" 11 12 // 13 // extern int __unorddf2vfp(double a, double b); 14 // 15 // Returns one iff a or b is NaN 16 // Uses Darwin calling convention where double precision arguments are passsed 17 // like in GPR pairs. 18 // 19 DEFINE_COMPILERRT_FUNCTION(__unorddf2vfp) 20 fmdrr d6, r0, r1 // load r0/r1 pair in double register 21 fmdrr d7, r2, r3 // load r2/r3 pair in double register 22 fcmpd d6, d7 23 fmstat 24 movvs r0, #1 // set result register to 1 if "overflow" (any NaNs) 25 movvc r0, #0 26 bx lr 27
