llvm-project/compiler-rt/lib/arm/gtsf2vfp.S

30 lines
867 B
ArmAsm

//===-- gtsf2vfp.S - Implement gtsf2vfp -----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "../assembly.h"
//
// extern int __gtsf2vfp(float a, float b);
//
// Returns one iff a > b and neither is NaN.
// Uses Darwin calling convention where single precision arguments are passsed
// like 32-bit ints
//
.syntax unified
.align 2
DEFINE_COMPILERRT_FUNCTION(__gtsf2vfp)
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
movgt r0, #1 // set result register to 1 if equal
movle r0, #0
bx lr