https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114340
Bug ID: 114340
Summary: ` X / CST < X` -> `X > 0`
Product: gcc
Version: 14.0
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: ---
int f(int x)
{
return x / 100 < x;
}
Can be transformed into just:
int f(int x)
{
return x > 0;
}
For signed types.
For unsigned types, it is `x != 0` (but that is also `x > 0` really).