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      1 //===-- ltsf2vfp.S - Implement ltsf2vfp -----------------------------------===//
      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 int __ltsf2vfp(float a, float b);
     14 //
     15 // Returns one iff a < b and neither is NaN.
     16 // Uses Darwin calling convention where single precision arguments are passsed
     17 // like 32-bit ints
     18 //
     19 	.syntax unified
     20 	.align 2
     21 DEFINE_COMPILERRT_FUNCTION(__ltsf2vfp)
     22 	vmov	s14, r0     // move from GPR 0 to float register
     23 	vmov	s15, r1     // move from GPR 1 to float register
     24 	vcmp.f32 s14, s15
     25 	vmrs	apsr_nzcv, fpscr
     26 	movmi	r0, #1      // set result register to 1 if equal
     27 	movpl	r0, #0
     28 	bx	lr
     29 
     30