1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
/* PR ipa/119376 */
/* { dg-do compile { target musttail } } */
/* { dg-options "-O2 -fdump-tree-optimized" } */
/* { dg-final { scan-tree-dump-times " \[^\n\r]* = foo \\\(3, \[^\n\r]*\\\); \\\[tail call\\\] \\\[must tail call\\\]" 1 "optimized" } } */
/* { dg-final { scan-tree-dump-times " \[^\n\r]* = foo \\\(4, \[^\n\r]*\\\); \\\[tail call\\\] \\\[must tail call\\\]" 1 "optimized" } } */
/* { dg-final { scan-tree-dump-not " foo \\\(\[12], \[^\n\r]*\\\); \\\[tail call\\\]" "optimized" } } */
int foo (int, int);
int v, w[10];
static inline __attribute__((always_inline)) int
bar (int x, int y)
{
[[gnu::musttail]] return foo (x, y);
}
static int
baz (int x, int y)
{
[[gnu::musttail]] return foo (x, x + y + (v | y) * (v & y));
}
int
qux (int x, int y)
{
w[0] = bar (1, x + y);
w[1] = baz (2, x + y);
if (x == 42)
[[gnu::musttail]] return bar (3, x + y);
if (x == -42)
[[gnu::musttail]] return baz (4, x + y);
return 0;
}
|