| /* { dg-do compile } */ |
| /* { dg-require-effective-target bswap } */ |
| /* { dg-options "-O2 -fdump-tree-bswap" } */ |
| /* { dg-additional-options "-march=z900" { target s390-*-* } } */ |
| |
| typedef unsigned char u8; |
| typedef unsigned int u32; |
| union __anonunion |
| { |
| u32 value; |
| u8 bytes[4]; |
| }; |
| |
| u32 |
| acpi_ut_dword_byte_swap (u32 value) |
| { |
| union __anonunion in; |
| in.value = value; |
| #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
| return ((in.bytes[0] << 24) | (in.bytes[1] << 16) |
| | (in.bytes[2] << 8) | in.bytes[3]); |
| #else |
| return ((in.bytes[3] << 24) | (in.bytes[2] << 16) |
| | (in.bytes[1] << 8) | in.bytes[0]); |
| #endif |
| } |
| |
| /* { dg-final { scan-tree-dump "32 bit bswap implementation found at" "bswap" } } */ |
