| /* PR tree-optimization/103376 */ |
| /* { dg-do compile } */ |
| /* { dg-require-effective-target bswap } */ |
| /* { dg-options "-O2 -fno-tree-vectorize -fdump-tree-optimized" } */ |
| /* { dg-additional-options "-march=z900" { target s390-*-* } } */ |
| |
| static unsigned int |
| f1 (unsigned int x) |
| { |
| return (x << 24) | (x >> 8); |
| } |
| |
| unsigned int |
| f2 (unsigned *p) |
| { |
| return ((f1 (p[0]) | (p[0] >> 8)) & 0xff000000U) | (p[0] >> 24) | ((p[0] & 0xff00U) << 8) | ((p[0] & 0xff0000U) >> 8); |
| } |
| |
| unsigned int |
| f3 (unsigned *p) |
| { |
| return ((f1 (p[0]) | (p[0] & 0x00ff00ffU)) & 0xff00ff00U) | (f1 (f1 (f1 (p[0]))) & 0x00ff00ffU); |
| } |
| |
| unsigned int |
| f4 (unsigned *p) |
| { |
| return (f1 (p[0]) ^ (p[0] >> 8)) ^ (p[0] >> 24) ^ ((p[0] & 0xff00U) << 8) ^ ((p[0] & 0xff0000U) >> 8); |
| } |
| |
| unsigned int |
| f5 (unsigned *p) |
| { |
| return (((f1 (p[0]) | (p[0] >> 16)) ^ (p[0] >> 8)) & 0xffff0000U) ^ (p[0] >> 24) ^ ((p[0] & 0xff00U) << 8) ^ ((p[0] & 0xff0000U) >> 8); |
| } |
| |
| /* { dg-final { scan-tree-dump-times "= __builtin_bswap32 \\\(" 4 "optimized" } } */ |
