blob: 05ffd8d93f0abcb21ac192e2b6308a53069acced (
plain)
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
34
35
36
|
/* { dg-options "-Os -fdump-rtl-hoist -fno-code-hoisting" } */
/* The rtl hoist pass requires that the expression to be hoisted can
be assigned without clobbering cc. For a PLUS rtx on S/390 this
requires a load address instruction which is fine on 64 bit but
cannot be used on 31 bit since it does a 31 bit add only. */
/* { dg-final { scan-rtl-dump "PRE/HOIST: end of bb .* copying expression" "hoist" { target { !s390*-*-* || lp64 } } } } */
#define BUF 100
long a[BUF];
void com (long);
void bar (long);
long foo (long x, long y, long z)
{
/* "x+y" won't be hoisted if "-fira-hoist-pressure" is disabled,
because its rtx_cost is too small. */
if (z)
{
a[1] = a[0];
a[2] = a[1];
a[3] = a[3];
a[4] = a[5];
a[5] = a[7];
a[6] = a[11];
a[7] = a[13];
a[8] = a[17];
com (x+y);
}
else
{
bar (x+y);
}
return 0;
}
|
