JIT Optimization: Merge multiple inc into one add #65025
Description
The codegen of B is better (less cpu cycles).
public int A(int a) {
a++; // inc edx
a++; // inc edx
return a;
}
public int B(int a) {
a += 2; // add edx, 2
return a;
}Expected result
- inc edx
- inc edx
+ add edx, 2
mov eax, edx
ret