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//===-- unordsf2vfp.S - Implement unordsf2vfp -----------------------------===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "../assembly.h"
// extern int __unordsf2vfp(float a, float b);
// Returns one iff a or b is NaN
// Uses Darwin calling convention where single precision arguments are passsed
// like 32-bit ints
.syntax unified
.p2align 2
vcmp.f32 s0, s1
vmov s14, r0 // move from GPR 0 to float register
vmov s15, r1 // move from GPR 1 to float register
vcmp.f32 s14, s15
vmrs apsr_nzcv, fpscr
movvs r0, #1 // set result register to 1 if "overflow" (any NaNs)
movvc r0, #0
bx lr