https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96928
Bug ID: 96928
Summary: Failure to optimize one's complement abs pattern
Product: gcc
Version: 11.0
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 a)
{
return (a < 0) ? ~a : a;
}
This can be optimized to `return (a >> 31) ^ a;`. This transformation is done
by LLVM, but not by GCC.
