[Bug tree-optimization/101701] GCC optimization and code generation for if-else chains vs ternary chains vs a switch

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101701

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
int foo(int val) {
    if     (val == 1) return val; 
    else if(val == 2) return val;
    else if(val == 3) return val;
    else if(val == 4) return val;
    else return -1;
}

int bar(int val) {
    return val == 1 ? val :
          (val == 2 ? val :
          (val == 3 ? val :
          (val == 4 ? val : -1)));
}

int baz(int val) {
    switch(val) {
        case 1:
        case 2:
        case 3:
        case 4:
            return val;
        default:
            return -1;
    }
}