[Bug tree-optimization/32540] [4.3 Regression] Exponential time behavior in PRE

[falk at debian dot org]

------- Comment #5 from falk at debian dot org  2007-09-24 20:18 -------
As noted by Edvin Török, the bug is not fixed for the original test case
(although it is fixed for the small test case). A small test case that still
fails is

int f(void);
void acceptloop_th(int *t) {
    int options = 0;
    if (f()) options |= 0x1 << 0;
    if (f()) options |= 0x1 << 1;
    if (f()) options |= 0x1 << 2;
    if (f()) options |= 0x1 << 3;
    if (f()) options |= 0x1 << 4;
    if (f()) options |= 0x1 << 5;
    if (f()) options |= 0x1 << 6;
    if (f()) options |= 0x1 << 7;
    if (f()) options |= 0x1 << 8;
    if (f()) options |= 0x1 << 9;
    if (f()) options |= 0x1 << 10;
    if (f()) options |= 0x1 << 11;
    if (f()) options |= 0x1 << 12;
    if (f()) options |= 0x1 << 13;
    if (f()) options |= 0x1 << 14;
    if (f()) options |= 0x1 << 15;
    if (f()) options |= 0x1 << 16;
    if (f()) options |= 0x1 << 17;
    if (f()) options |= 0x1 << 18;
    if (f()) options |= 0x1 << 19;
    if (f()) options |= 0x1 << 20;
    if (f()) options |= 0x1 << 21;
    if (f()) options |= 0x1 << 22;
    if (f()) options |= 0x1 << 23;
    if (f()) options |= 0x1 << 24;
    if (f()) options |= 0x1 << 25;
    if (f()) options |= 0x1 << 26;
    if (f()) *t = options;
}

(the only change is that the last line is conditional).


-- 

falk at debian dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32540