diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/optimize-bswapsi-5.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/optimize-bswapsi-5.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/optimize-bswapsi-5.c b/gcc/testsuite/gcc.dg/optimize-bswapsi-5.c new file mode 100644 index 0000000000..a824547469 --- /dev/null +++ b/gcc/testsuite/gcc.dg/optimize-bswapsi-5.c @@ -0,0 +1,31 @@ +/* { dg-do compile } */ +/* { dg-require-effective-target bswap32 } */ +/* { dg-options "-O2 -fdump-tree-bswap" } */ +/* { dg-additional-options "-march=z900" { target s390-*-* } } */ + +struct L { unsigned int l[2]; }; +union U { double a; struct L l; } u; + +void +foo (double a, struct L *p) +{ + u.a = a; + struct L l = u.l, m; + m.l[0] = (((l.l[1] & 0xff000000) >> 24) + | ((l.l[1] & 0x00ff0000) >> 8) + | ((l.l[1] & 0x0000ff00) << 8) + | ((l.l[1] & 0x000000ff) << 24)); + m.l[1] = (((l.l[0] & 0xff000000) >> 24) + | ((l.l[0] & 0x00ff0000) >> 8) + | ((l.l[0] & 0x0000ff00) << 8) + | ((l.l[0] & 0x000000ff) << 24)); + *p = m; +} + +void +bar (double a, struct L *p) +{ + foo (a, p); +} + +/* { dg-final { scan-tree-dump-times "32 bit bswap implementation found at" 2 "bswap" } } */ |