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comparison gcc/testsuite/gcc.dg/optimize-bswapdi-3.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
comparison
equal deleted inserted replaced
68:561a7518be6b 111:04ced10e8804
1 /* { dg-do compile } */
2 /* { dg-require-effective-target bswap64 } */
3 /* { dg-require-effective-target stdint_types } */
4 /* { dg-options "-O2 -fdump-tree-bswap" } */
5 /* { dg-additional-options "-mzarch" { target s390*-*-* } } */
6
7 #include <stdint.h>
8
9 unsigned char data[8];
10
11 struct uint64_st {
12 unsigned char u0, u1, u2, u3, u4, u5, u6, u7;
13 };
14
15 uint64_t read_le64_1 (void)
16 {
17 return (uint64_t) data[0] | ((uint64_t) data[1] << 8)
18 | ((uint64_t) data[2] << 16) | ((uint64_t) data[3] << 24)
19 | ((uint64_t) data[4] << 32) | ((uint64_t) data[5] << 40)
20 | ((uint64_t) data[6] << 48) | ((uint64_t) data[7] << 56);
21 }
22
23 uint64_t read_le64_2 (struct uint64_st data)
24 {
25 return (uint64_t) data.u0 | ((uint64_t) data.u1 << 8)
26 | ((uint64_t) data.u2 << 16) | ((uint64_t) data.u3 << 24)
27 | ((uint64_t) data.u4 << 32) | ((uint64_t) data.u5 << 40)
28 | ((uint64_t) data.u6 << 48) | ((uint64_t) data.u7 << 56);
29 }
30
31 uint64_t read_le64_3 (unsigned char *data)
32 {
33 return (uint64_t) *data | ((uint64_t) *(data + 1) << 8)
34 | ((uint64_t) *(data + 2) << 16) | ((uint64_t) *(data + 3) << 24)
35 | ((uint64_t) *(data + 4) << 32) | ((uint64_t) *(data + 5) << 40)
36 | ((uint64_t) *(data + 6) << 48) | ((uint64_t) *(data + 7) << 56);
37 }
38
39 uint64_t read_be64_1 (void)
40 {
41 return (uint64_t) data[7] | ((uint64_t) data[6] << 8)
42 | ((uint64_t) data[5] << 16) | ((uint64_t) data[4] << 24)
43 | ((uint64_t) data[3] << 32) | ((uint64_t) data[2] << 40)
44 | ((uint64_t) data[1] << 48) | ((uint64_t) data[0] << 56);
45 }
46
47 uint64_t read_be64_2 (struct uint64_st data)
48 {
49 return (uint64_t) data.u7 | ((uint64_t) data.u6 << 8)
50 | ((uint64_t) data.u5 << 16) | ((uint64_t) data.u4 << 24)
51 | ((uint64_t) data.u3 << 32) | ((uint64_t) data.u2 << 40)
52 | ((uint64_t) data.u1 << 48) | ((uint64_t) data.u0 << 56);
53 }
54
55 uint64_t read_be64_3 (unsigned char *data)
56 {
57 return (uint64_t) *(data + 7) | ((uint64_t) *(data + 6) << 8)
58 | ((uint64_t) *(data + 5) << 16) | ((uint64_t) *(data + 4) << 24)
59 | ((uint64_t) *(data + 3) << 32) | ((uint64_t) *(data + 2) << 40)
60 | ((uint64_t) *(data + 1) << 48) | ((uint64_t) *data << 56);
61 }
62
63 /* { dg-final { scan-tree-dump-times "64 bit load in target endianness found at" 3 "bswap" } } */
64 /* { dg-final { scan-tree-dump-times "64 bit bswap implementation found at" 3 "bswap" } } */