blob: a266df8cc1fb5a718d56d1d03138a0b796454418 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
//===-- eqdf2vfp.S - Implement eqdf2vfp -----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "../assembly.h"
//
// extern int __eqdf2vfp(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
.p2align 2
DEFINE_COMPILERRT_FUNCTION(__eqdf2vfp)
#if defined(COMPILER_RT_ARMHF_TARGET)
vcmp.f64 d0, d1
#else
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
#endif
vmrs apsr_nzcv, fpscr
ITE(eq)
moveq r0, #1 // set result register to 1 if equal
movne r0, #0
bx lr
END_COMPILERRT_FUNCTION(__eqdf2vfp)
NO_EXEC_STACK_DIRECTIVE
|
