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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 26 | pmbaty | 1 | /* ACC -- Automatic Compiler Configuration |
| 2 | |||
| 3 | Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer |
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| 4 | All Rights Reserved. |
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| 5 | |||
| 6 | This software is a copyrighted work licensed under the terms of |
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| 7 | the GNU General Public License. Please consult the file "ACC_LICENSE" |
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| 8 | for details. |
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| 9 | |||
| 10 | Markus F.X.J. Oberhumer |
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| 11 | <markus@oberhumer.com> |
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| 12 | http://www.oberhumer.com/ |
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| 13 | */ |
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| 14 | |||
| 15 | |||
| 16 | /************************************************************************* |
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| 17 | // |
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| 18 | **************************************************************************/ |
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| 19 | |||
| 20 | #if !defined(__ACCCHKR_FUNCNAME) |
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| 21 | # define __ACCCHKR_FUNCNAME(f) accchkr_ ## f |
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| 22 | #endif |
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| 23 | |||
| 24 | |||
| 25 | |||
| 26 | #if !defined(ACCCHKR_ASSERT) |
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| 27 | |||
| 28 | #if 0 || defined(ACCCHKR_CONFIG_DEBUG) |
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| 29 | |||
| 30 | #include <stdio.h> |
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| 31 | static int __ACCCHKR_FUNCNAME(assert_fail)(const char* s, unsigned l) |
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| 32 | { |
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| 33 | fprintf(stderr, "ACCCHKR assertion failed in line %u: `%s'\n", l, s); |
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| 34 | return 0; |
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| 35 | } |
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| 36 | #define ACCCHKR_ASSERT(expr) ((expr) ? 1 : __ACCCHKR_FUNCNAME(assert_fail)(#expr,__LINE__)) |
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| 37 | |||
| 38 | #else |
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| 39 | |||
| 40 | #define ACCCHKR_ASSERT(expr) ((expr) ? 1 : 0) |
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| 41 | |||
| 42 | #endif |
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| 43 | |||
| 44 | #endif |
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| 45 | |||
| 46 | |||
| 47 | |||
| 48 | /* avoid inlining */ |
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| 49 | static int __ACCCHKR_FUNCNAME(schedule_insns_bug)(void); |
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| 50 | static int __ACCCHKR_FUNCNAME(strength_reduce_bug)(int*); |
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| 51 | |||
| 52 | |||
| 53 | /************************************************************************* |
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| 54 | // main entry |
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| 55 | **************************************************************************/ |
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| 56 | |||
| 57 | static int __ACCCHKR_FUNCNAME(check)(int r) |
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| 58 | { |
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| 59 | #if defined(ACC_ENDIAN_BIG_ENDIAN) |
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| 60 | { |
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| 61 | union { long l; unsigned char c[sizeof(long)]; } u; |
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| 62 | u.l = 0; u.c[sizeof(long)-1] = 0x80; |
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| 63 | r &= ACCCHKR_ASSERT(u.l == 128); |
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| 64 | u.l = 0; u.c[0] = 0x80; |
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| 65 | r &= ACCCHKR_ASSERT(u.l < 0); |
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| 66 | ACC_UNUSED(u); |
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| 67 | } |
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| 68 | #endif |
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| 69 | #if defined(ACC_ENDIAN_LITTLE_ENDIAN) |
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| 70 | { |
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| 71 | union { long l; unsigned char c[sizeof(long)]; } u; |
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| 72 | u.l = 0; u.c[0] = 0x80; |
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| 73 | r &= ACCCHKR_ASSERT(u.l == 128); |
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| 74 | u.l = 0; u.c[sizeof(long)-1] = 0x80; |
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| 75 | r &= ACCCHKR_ASSERT(u.l < 0); |
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| 76 | ACC_UNUSED(u); |
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| 77 | } |
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| 78 | #endif |
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| 79 | |||
| 80 | /* check for the gcc schedule-insns optimization bug */ |
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| 81 | if (r == 1) |
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| 82 | { |
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| 83 | r &= ACCCHKR_ASSERT(!__ACCCHKR_FUNCNAME(schedule_insns_bug())); |
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| 84 | } |
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| 85 | |||
| 86 | /* check for the gcc strength-reduce optimization bug */ |
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| 87 | if (r == 1) |
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| 88 | { |
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| 89 | static int x[3]; |
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| 90 | static unsigned xn = 3; |
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| 91 | register unsigned j; |
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| 92 | |||
| 93 | for (j = 0; j < xn; j++) |
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| 94 | x[j] = (int)j - 3; |
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| 95 | r &= ACCCHKR_ASSERT(!__ACCCHKR_FUNCNAME(strength_reduce_bug(x))); |
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| 96 | } |
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| 97 | |||
| 98 | return r; |
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| 99 | } |
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| 100 | |||
| 101 | |||
| 102 | /************************************************************************* |
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| 103 | // |
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| 104 | **************************************************************************/ |
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| 105 | |||
| 106 | static int __ACCCHKR_FUNCNAME(schedule_insns_bug)(void) |
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| 107 | { |
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| 108 | const int a[] = {1, 2, 0}; const int* b; |
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| 109 | b = a; return (*b) ? 0 : 1; |
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| 110 | } |
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| 111 | |||
| 112 | |||
| 113 | static int __ACCCHKR_FUNCNAME(strength_reduce_bug)(int* x) |
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| 114 | { |
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| 115 | #if 0 && (ACC_CC_DMC || ACC_CC_SYMANTECC || ACC_CC_ZORTECHC) |
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| 116 | ACC_UNUSED(x); return 0; |
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| 117 | #else |
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| 118 | return x[0] != -3 || x[1] != -2 || x[2] != -1; |
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| 119 | #endif |
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| 120 | } |
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| 121 | |||
| 122 | |||
| 123 | |||
| 124 | /* |
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| 125 | vi:ts=4:et |
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| 126 | */ |