https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109279
--- Comment #20 from Wojciech Mula <wojciech_mula at poczta dot onet.pl> ---
This constants is worth checking (appears in division by 10):
```
unsigned long ccd() {
return 0xcccccccccccccccd;
}
```
riscv64-unknown-linux-gnu-g++ (crosstool-NG UNKNOWN) 15.0.0 20241111
(experimental):
```
ccd():
li a0,858992640
li a5,858992640
addi a0,a0,819
addi a5,a5,818
slli a0,a0,32
add a0,a0,a5
xori a0,a0,-1
ret
```
clang 20:
```
ccd():
lui a0, 838861
addiw a0, a0, -819
slli a1, a0, 32
add a0, a0, a1
ret
```
