29 lines
703 B
C
29 lines
703 B
C
/* { dg-do compile } */
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/* { dg-require-effective-target bswap32 } */
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/* { dg-options "-O2 -fdump-tree-bswap" } */
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/* { dg-additional-options "-march=z900" { target s390-*-* } } */
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typedef unsigned char u8;
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typedef unsigned int u32;
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union __anonunion
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{
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u32 value;
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u8 bytes[4];
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};
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u32
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acpi_ut_dword_byte_swap (u32 value)
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{
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union __anonunion in;
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in.value = value;
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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return ((in.bytes[0] << 24) | (in.bytes[1] << 16)
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| (in.bytes[2] << 8) | in.bytes[3]);
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#else
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return ((in.bytes[3] << 24) | (in.bytes[2] << 16)
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| (in.bytes[1] << 8) | in.bytes[0]);
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#endif
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}
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/* { dg-final { scan-tree-dump "32 bit bswap implementation found at" "bswap" } } */
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