1 /* { dg-options "-Os -fdump-rtl-hoist -fno-code-hoisting" } */
2 /* The rtl hoist pass requires that the expression to be hoisted can
3 be assigned without clobbering cc. For a PLUS rtx on S/390 this
4 requires a load address instruction which is fine on 64 bit but
5 cannot be used on 31 bit since it does a 31 bit add only. */
6 /* { dg-final { scan-rtl-dump "PRE/HOIST: end of bb .* copying expression" "hoist" { target { { !s390*-*-* || lp64 } && nonpic } } } } */
7
8 #define BUF 100
9 long a[BUF];
10
11 void com (long);
12 void bar (long);
13
foo(long x,long y,long z)14 long foo (long x, long y, long z)
15 {
16 /* "x+y" won't be hoisted if "-fira-hoist-pressure" is disabled,
17 because its rtx_cost is too small. */
18 if (z)
19 {
20 a[1] = a[0] + a[2];
21 a[2] = a[1] + a[3];
22 a[3] = a[2] + a[4];
23 a[4] = a[3] + a[5];
24 a[5] = a[4] + a[6];
25 a[6] = a[5] + a[7];
26 a[7] = a[6] + a[8];
27 com (x+y);
28 }
29 else
30 {
31 bar (x+y);
32 }
33
34 return 0;
35 }
36