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comparison gcc/testsuite/gcc.dg/strlenopt-44.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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children 1830386684a0
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111:04ced10e8804 131:84e7813d76e9
1 /* PR tree-optimization/86083 - handle non-constant assignments in strlen
2 { dg-do compile }
3 { dg-options "-O2 -Wall -fdump-tree-optimized" } */
4
5 #include "range.h"
6 #include "strlenopt.h"
7
8 #define CAT(x, y) x ## y
9 #define CONCAT(x, y) CAT (x, y)
10 #define FAILNAME(name) CONCAT (call_ ## name ##_on_line_, __LINE__)
11
12 #define FAIL(name) do { \
13 extern void FAILNAME (name) (void); \
14 FAILNAME (name)(); \
15 } while (0)
16
17 /* Macro to emit a call to funcation named
18 call_in_true_branch_not_eliminated_on_line_NNN()
19 for each call that's expected to be eliminated. The dg-final
20 scan-tree-dump-time directive at the bottom of the test verifies
21 that no such call appears in output. */
22 #define ASSERT_ELIM(expr) \
23 if (!(expr)) FAIL (in_true_branch_not_eliminated); else (void)0
24
25 /* Macro to emit a call to a function named
26 call_made_in_{true,false}_branch_on_line_NNN()
27 for each call that's expected to be retained. The dg-final
28 scan-tree-dump-time directive at the bottom of the test verifies
29 that the expected number of both kinds of calls appears in output
30 (a pair for each line with the invocation of the KEEP() macro. */
31 #define ASSERT_KEEP(expr) \
32 if (expr) \
33 FAIL (made_in_true_branch); \
34 else \
35 FAIL (made_in_false_branch)
36
37
38 #define ELIM(init, i, c, res) \
39 do { \
40 char a[] = init; \
41 a[i] = c; \
42 ASSERT_ELIM (strlen (a) == res); \
43 } while (0)
44
45 #define KEEP(init, i, c, res) \
46 do { \
47 char a[] = init; \
48 a[i] = c; \
49 ASSERT_KEEP (strlen (a) == res); \
50 } while (0)
51
52
53 void test_elim_range (char c)
54 {
55 ELIM ("1", 0, UR (1, 2), 1);
56 ELIM ("1", 0, UR (1, 127), 1);
57 ELIM ("1", 0, UR ('0', '9'), 1);
58
59 ELIM ("12", 0, UR (1, 127), 2);
60 ELIM ("12", 1, UR (1, 127), 2);
61
62 ELIM ("123", 0, UR (1, 9), 3);
63 ELIM ("123", 1, UR (10, 99), 3);
64 ELIM ("123", 2, UR (100, 127), 3);
65 }
66
67 void test_elim_anti_range (const char *s)
68 {
69 char c = *s++;
70 ELIM ("123", 0, c ? c : 'x', 3);
71
72 c = *s++;
73 ELIM ("1234", 1, c ? c : 'y', 4);
74
75 c = *s++;
76 ELIM ("123", 2, c ? c : 'z', 3);
77 }
78
79 #line 1000
80
81 void test_keep (void)
82 {
83 size_t uchar_max = (unsigned char)-1;
84
85 KEEP ("1", 0, UR (1, uchar_max + 1), 1);
86 KEEP ("1\0\3", 1, UR (1, 2), 1);
87 }
88
89 /* { dg-final { scan-tree-dump-times "call_in_true_branch_not_eliminated_" 0 "optimized" } }
90
91 { dg-final { scan-tree-dump-times "call_made_in_true_branch_on_line_1\[0-9\]\[0-9\]\[0-9\]" 2 "optimized" } }
92 { dg-final { scan-tree-dump-times "call_made_in_false_branch_on_line_1\[0-9\]\[0-9\]\[0-9\]" 2 "optimized" } } */