llvm-project/compiler-rt/lib/arm/gtdf2vfp.S

27 lines
821 B
ArmAsm

//===-- gtdf2vfp.S - Implement gtdf2vfp -----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "../assembly.h"
//
// extern double __gtdf2vfp(double a, double b);
//
// Returns one iff a > b and neither is NaN.
// Uses Darwin calling convention where double precision arguments are passsed
// like in GPR pairs.
//
DEFINE_COMPILERRT_FUNCTION(__gtdf2vfp)
fmdrr d6, r0, r1 // load r0/r1 pair in double register
fmdrr d7, r2, r3 // load r2/r3 pair in double register
fcmpd d6, d7
fmstat
movgt r0, #1 // set result register to 1 if equal
movle r0, #0
bx lr