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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-require-effective-target stdint_types } */
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4 /* { dg-options "-O2 -fdump-tree-bswap" } */
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5 /* { dg-additional-options "-march=z900" { target s390*-*-* } } */
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6
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7 #include <stdint.h>
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8
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9 extern unsigned char data[4];
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10
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11 struct uint32_st {
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12 unsigned char u0, u1, u2, u3;
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13 };
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14
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15 uint32_t read_le32_1 (void)
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16 {
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17 return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
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18 }
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19
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20 uint32_t read_le32_2 (struct uint32_st data)
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21 {
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22 return data.u0 | (data.u1 << 8) | (data.u2 << 16) | (data.u3 << 24);
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23 }
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24
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25 uint32_t read_le32_3 (unsigned char *data)
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26 {
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27 return *data | (*(data + 1) << 8) | (*(data + 2) << 16)
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28 | (*(data + 3) << 24);
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29 }
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30
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31 uint32_t read_be32_1 (void)
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32 {
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33 return data[3] | (data[2] << 8) | (data[1] << 16) | (data[0] << 24);
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34 }
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35
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36 uint32_t read_be32_2 (struct uint32_st data)
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37 {
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38 return data.u3 | (data.u2 << 8) | (data.u1 << 16) | (data.u0 << 24);
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39 }
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40
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41 uint32_t read_be32_3 (unsigned char *data)
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42 {
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43 return *(data + 3) | (*(data + 2) << 8) | (*(data + 1) << 16)
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44 | (*data << 24);
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45 }
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46
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47 /* { dg-final { scan-tree-dump-times "32 bit load in target endianness found at" 3 "bswap" } } */
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48 /* { dg-final { scan-tree-dump-times "32 bit bswap implementation found at" 3 "bswap" } } */
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