https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103354
Bug ID: 103354
Summary: missed optimization with & and | and compares
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
Take:
int h(int a, int b, int c, int d)
{
return (c & -(a==b)) | (d & -(a!=b));
}
---- CUT ---
We currently don't optimize the above down to just:
int h(int a, int b, int c, int d)
{
return (a==b) ? c : d;
}
This is from https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92342#c4
