1//===----------------------Hexagon builtin routine ------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9 .macro FUNCTION_BEGIN name
10 .text
11 .p2align 5
12 .globl \name
13 .type \name, @function
14\name:
15 .endm
16
17 .macro FUNCTION_END name
18 .size \name, . - \name
19 .endm
20
21#define Q6_ALIAS(TAG) .global __qdsp_##TAG ; .set __qdsp_##TAG, __hexagon_##TAG
22#define FAST_ALIAS(TAG) .global __hexagon_fast_##TAG ; .set __hexagon_fast_##TAG, __hexagon_##TAG
23#define FAST2_ALIAS(TAG) .global __hexagon_fast2_##TAG ; .set __hexagon_fast2_##TAG, __hexagon_##TAG
24
25FUNCTION_BEGIN __hexagon_divsf3
26 {
27 r2,p0 = sfrecipa(r0,r1)
28 r4 = sffixupd(r0,r1)
29 r3 = ##0x3f800000 // 1.0
30 }
31 {
32 r5 = sffixupn(r0,r1)
33 r3 -= sfmpy(r4,r2):lib // 1-(den/recip) yields error?
34 r6 = ##0x80000000
35 r7 = r3
36 }
37 {
38 r2 += sfmpy(r3,r2):lib
39 r3 = r7
40 r6 = r5
41 r0 = and(r6,r5)
42 }
43 {
44 r3 -= sfmpy(r4,r2):lib
45 r0 += sfmpy(r5,r2):lib
46 }
47 {
48 r2 += sfmpy(r3,r2):lib
49 r6 -= sfmpy(r0,r4):lib
50 }
51 {
52 r0 += sfmpy(r6,r2):lib
53 }
54 {
55 r5 -= sfmpy(r0,r4):lib
56 }
57 {
58 r0 += sfmpy(r5,r2,p0):scale
59 jumpr r31
60 }
61FUNCTION_END __hexagon_divsf3
62
63Q6_ALIAS(divsf3)
64FAST_ALIAS(divsf3)
65FAST2_ALIAS(divsf3)
66

source code of compiler-rt/lib/builtins/hexagon/sfdiv_opt.S