[Bug tree-optimization/15559] [3.3/3.4/3.5 Regression] SSAPRE misses obvious redundant expression
giovannibajo at libero dot it
gcc-bugzilla@gcc.gnu.org
Thu Jun 10 16:12:00 GMT 2004
------- Additional Comments From giovannibajo at libero dot it 2004-06-10 16:12 -------
yes, but if GVNPRE hoists the operation, we end up with:
int f(int i, int b, int *c)
{
int ii;
ii = i+1;
if (b)
;
else
*c = ii;
return ii;
}
that can be later simplified to:
int f(int i, int b, int *c)
{
int ii;
ii = i+1;
if (!b)
*c = ii;
return ii;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15559
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