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      1 //===-- nedf2vfp.S - Implement nedf2vfp -----------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 #include "../assembly.h"
     11 
     12 //
     13 // extern double __nedf2vfp(double a, double b);
     14 //
     15 // Returns zero if a and b are unequal and neither is NaN.
     16 // Uses Darwin calling convention where double precision arguments are passsed
     17 // like in GPR pairs.
     18 //
     19 	.syntax unified
     20 	.p2align 2
     21 DEFINE_COMPILERRT_FUNCTION(__nedf2vfp)
     22 	vmov 	d6, r0, r1	// load r0/r1 pair in double register
     23 	vmov 	d7, r2, r3	// load r2/r3 pair in double register
     24 	vcmp.f64 d6, d7
     25 	vmrs	apsr_nzcv, fpscr
     26 	movne	r0, #1		// set result register to 0 if unequal
     27 	moveq	r0, #0
     28 	bx	lr
     29 END_COMPILERRT_FUNCTION(__nedf2vfp)
     30