| /* { 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 } && nonpic } } } } */ |
| |
| #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[2] = a[1] + a[3]; |
| a[3] = a[2] + a[4]; |
| a[4] = a[3] + a[5]; |
| a[5] = a[4] + a[6]; |
| a[6] = a[5] + a[7]; |
| a[7] = a[6] + a[8]; |
| com (x+y); |
| } |
| else |
| { |
| bar (x+y); |
| } |
| |
| return 0; |
| } |
