forked from OSchip/llvm-project
30 lines
915 B
ArmAsm
30 lines
915 B
ArmAsm
|
//===-- ltdf2vfp.S - Implement ltdf2vfp -----------------------------------===//
|
||
|
|
//
|
||
|
|
// 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 double __ltdf2vfp(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.
|
||
|
|
//
|
||
|
|
.syntax unified
|
||
|
|
.align 2
|
||
|
|
DEFINE_COMPILERRT_FUNCTION(__ltdf2vfp)
|
||
|
|
vmov d6, r0, r1 // load r0/r1 pair in double register
|
||
|
|
vmov d7, r2, r3 // load r2/r3 pair in double register
|
||
|
|
vcmp.f64 d6, d7
|
||
|
|
vmrs apsr_nzcv, fpscr
|
||
|
|
movmi r0, #1 // set result register to 1 if equal
|
||
|
|
movpl r0, #0
|
||
|
|
bx lr
|
||
|
|
END_COMPILERRT_FUNCTION(__ltdf2vfp)
|