Mercurial > hg > CbC > CbC_gcc
comparison gcc/testsuite/gcc.dg/optimize-bswapsi-5.c @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
|---|---|
| 1 /* { dg-do compile } */ | |
| 2 /* { dg-require-effective-target bswap32 } */ | |
| 3 /* { dg-options "-O2 -fdump-tree-bswap" } */ | |
| 4 /* { dg-additional-options "-march=z900" { target s390-*-* } } */ | |
| 5 | |
| 6 struct L { unsigned int l[2]; }; | |
| 7 union U { double a; struct L l; } u; | |
| 8 | |
| 9 void | |
| 10 foo (double a, struct L *p) | |
| 11 { | |
| 12 u.a = a; | |
| 13 struct L l = u.l, m; | |
| 14 m.l[0] = (((l.l[1] & 0xff000000) >> 24) | |
| 15 | ((l.l[1] & 0x00ff0000) >> 8) | |
| 16 | ((l.l[1] & 0x0000ff00) << 8) | |
| 17 | ((l.l[1] & 0x000000ff) << 24)); | |
| 18 m.l[1] = (((l.l[0] & 0xff000000) >> 24) | |
| 19 | ((l.l[0] & 0x00ff0000) >> 8) | |
| 20 | ((l.l[0] & 0x0000ff00) << 8) | |
| 21 | ((l.l[0] & 0x000000ff) << 24)); | |
| 22 *p = m; | |
| 23 } | |
| 24 | |
| 25 void | |
| 26 bar (double a, struct L *p) | |
| 27 { | |
| 28 foo (a, p); | |
| 29 } | |
| 30 | |
| 31 /* { dg-final { scan-tree-dump-times "32 bit bswap implementation found at" 2 "bswap" } } */ |