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comparison gcc/testsuite/gcc.dg/tree-ssa/popcount.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents
children 1830386684a0
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111:04ced10e8804 131:84e7813d76e9
1 /* { dg-do compile } */
2 /* { dg-options "-O3 -fdump-tree-optimized -fno-tree-ch" } */
3
4 extern int foo (int);
5
6 int PopCount (long b) {
7 int c = 0;
8 b++;
9
10 while (b) {
11 b &= b - 1;
12 c++;
13 }
14 return c;
15 }
16 int PopCount2 (long b) {
17 int c = 0;
18
19 while (b) {
20 b &= b - 1;
21 c++;
22 }
23 foo (c);
24 return foo (c);
25 }
26
27 void PopCount3 (long b1) {
28
29 for (long i = 0; i < b1; ++i)
30 {
31 long b = i;
32 int c = 0;
33 while (b) {
34 b &= b - 1;
35 c++;
36 }
37 foo (c);
38 }
39 }
40
41 /* { dg-final { scan-tree-dump-times "__builtin_popcount" 3 "optimized" } } */