| /* { dg-do compile } */ |
| /* { dg-require-effective-target popcountl } */ |
| /* { dg-options "-O3 -fdump-tree-optimized -fno-tree-ch" } */ |
| |
| extern int foo (int); |
| |
| int PopCount (long b) { |
| int c = 0; |
| b++; |
| |
| while (b) { |
| b &= b - 1; |
| c++; |
| } |
| return c; |
| } |
| int PopCount2 (long b) { |
| int c = 0; |
| |
| while (b) { |
| b &= b - 1; |
| c++; |
| } |
| foo (c); |
| return foo (c); |
| } |
| |
| void PopCount3 (long b1) { |
| |
| for (long i = 0; i < b1; ++i) |
| { |
| long b = i; |
| int c = 0; |
| while (b) { |
| b &= b - 1; |
| c++; |
| } |
| foo (c); |
| } |
| } |
| |
| /* { dg-final { scan-tree-dump-times "__builtin_popcount" 3 "optimized" } } */ |
