1//===-- nedf2vfp.S - Implement nedf2vfp -----------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#include "../assembly.h" 10 11// extern double __nedf2vfp(double a, double b); 12// 13// Returns zero if a and b are unequal and neither is NaN. 14// Uses Darwin calling convention where double precision arguments are passsed 15// like in GPR pairs. 16 17 .syntax unified 18 .p2align 2 19DEFINE_COMPILERRT_FUNCTION(__nedf2vfp) 20#if defined(COMPILER_RT_ARMHF_TARGET) 21 vcmp.f64 d0, d1 22#else 23 vmov d6, r0, r1 // load r0/r1 pair in double register 24 vmov d7, r2, r3 // load r2/r3 pair in double register 25 vcmp.f64 d6, d7 26#endif 27 vmrs apsr_nzcv, fpscr 28 ITE(ne) 29 movne r0, #1 // set result register to 0 if unequal 30 moveq r0, #0 31 bx lr 32END_COMPILERRT_FUNCTION(__nedf2vfp) 33 34NO_EXEC_STACK_DIRECTIVE 35 36