111
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1 /* { dg-do compile } */
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131
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2 /* { dg-require-effective-target bswap } */
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111
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3 /* { dg-options "-O2 -fdump-tree-bswap" } */
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4 /* { dg-additional-options "-march=z900" { target s390-*-* } } */
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5
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6 typedef unsigned char u8;
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7 typedef unsigned int u32;
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8 union __anonunion
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9 {
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10 u32 value;
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11 u8 bytes[4];
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12 };
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13
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14 u32
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15 acpi_ut_dword_byte_swap (u32 value)
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16 {
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17 union __anonunion in;
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18 in.value = value;
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19 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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20 return ((in.bytes[0] << 24) | (in.bytes[1] << 16)
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21 | (in.bytes[2] << 8) | in.bytes[3]);
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22 #else
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23 return ((in.bytes[3] << 24) | (in.bytes[2] << 16)
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24 | (in.bytes[1] << 8) | in.bytes[0]);
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25 #endif
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26 }
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27
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28 /* { dg-final { scan-tree-dump "32 bit bswap implementation found at" "bswap" } } */
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