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comparison gcc/testsuite/gcc.dg/pr48335-4.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 middle-end/48335 */
2 /* { dg-do compile } */
3 /* { dg-options "-O2 -fno-tree-sra" } */
4
5 typedef short U __attribute__((may_alias, aligned (1)));
6
7 struct S
8 {
9 double d;
10 };
11
12 void bar (struct S);
13
14 void
15 f1 (int x)
16 {
17 struct S s = { .d = 0.0 };
18 ((U *)((char *) &s.d + 1))[-1] = x;
19 __real__ s.d *= 7.0;
20 bar (s);
21 }
22
23 void
24 f2 (int x)
25 {
26 struct S s = { .d = 0.0 };
27 ((U *)((char *) &s.d + 1))[-2] = x;
28 __real__ s.d *= 7.0;
29 bar (s);
30 }
31
32 void
33 f3 (int x)
34 {
35 struct S s = { .d = 0.0 };
36 ((U *)((char *) &s.d + 1))[5] = x;
37 __real__ s.d *= 7.0;
38 bar (s);
39 }