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comparison gcc/testsuite/g++.dg/ipa/pr93223.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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131:84e7813d76e9 145:1830386684a0
1 /* { dg-do compile } */
2 /* { dg-options "-O3 -std=gnu++14" } */
3
4 template <typename Function>
5 bool run(const int item_count,
6 Function && process_range,
7 const int max_parallelism,
8 int* progress = nullptr)
9 {
10 if (max_parallelism <= 1)
11 {
12 if (progress == nullptr)
13 {
14 return process_range(0);
15 }
16 else
17 {
18 auto result = true;
19 for (int i = 0; i != item_count && result; ++i)
20 {
21 (*progress)++;
22 result = process_range(i);
23 }
24 return result;
25 }
26 }
27
28 if (max_parallelism > 10)
29 {
30 if (progress == nullptr)
31 {
32 return process_range(0);
33 }
34 else
35 {
36 auto result = true;
37 for (int i = 0; i != item_count && result; ++i)
38 {
39 (*progress)++;
40 result = process_range(i);
41 }
42 return result;
43 }
44 }
45 return false;
46 }
47
48 namespace
49 {
50 __attribute__((optimize(0))) bool worker_fun(const int)
51 {
52 return true;
53 }
54 }
55
56 void demo(int n)
57 {
58 for (int i = 0; i < n; ++i)
59 {
60 run(n, &worker_fun, n);
61 }
62 }