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comparison gcc/testsuite/gcc.dg/pr46777.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* PR rtl-optimization/46777 */
2 /* { dg-do compile } */
3 /* { dg-options "-fgcse -O -fno-tree-dominator-opts -funroll-loops" } */
4
5 struct S { char s[256]; };
6
7 static inline int
8 foo (int x, int y)
9 {
10 switch (x)
11 {
12 case 1:
13 case 2:
14 return 3;
15 case 3:
16 case 4:
17 return 2;
18 case 5:
19 switch (y)
20 {
21 case 4:
22 return 1;
23 }
24 }
25 return 0;
26 }
27
28 void
29 bar (struct S *x, int *y, int *z, int **w)
30 {
31 switch (*y ? x->s[*y] : foo (y[1], y[0]))
32 {
33 case 3:
34 if (y + 2 == z)
35 for (;;)
36 {
37 y += 2;
38 switch (*y ? x->s[*y] : foo (y[1], y[0]))
39 {
40 case 6:
41 break;
42 default:
43 *w = y;
44 }
45 if (y == z)
46 break;
47 }
48 }
49 }