https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94882
Bug ID: 94882
Summary: Failure to optimize and+or+sub into xor+not
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: gabravier at gmail dot com
Target Milestone: ---
int f(int x, int y)
{
return (x & y) - (x | y) - 1;
}
This can be optimized to `~(x ^ y)`. LLVM does this transformation, but GCC
does not.
