https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116509
Bug ID: 116509
Summary: 128bit integer compares can be improved
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
Target: aarch64
Take:
```
int ltu(unsigned __int128 a, unsigned __int128 b)
{
return a < b;
}
int gtu(unsigned __int128 a, unsigned __int128 b)
{
return a > b;
}
int geu(unsigned __int128 a, unsigned __int128 b)
{
return a >= b;
}
int leu(unsigned __int128 a, unsigned __int128 b)
{
return a <= b;
}
int eq(unsigned __int128 a, unsigned __int128 b)
{
return a == b;
}
int ne(unsigned __int128 a, unsigned __int128 b)
{
return a != b;
}
int lt(__int128 a, __int128 b)
{
return a < b;
}
int gt(__int128 a, __int128 b)
{
return a > b;
}
int ge(__int128 a, __int128 b)
{
return a >= b;
}
int le(__int128 a, __int128 b)
{
return a <= b;
}
```
These can be handled using ccmp/sbcs instead of what we currently produce.
