Does gcc (or any other compiler) change (n%2==1) for (n&1==1)? -


to test if number odd or even, understanding test using

(n%2==1)

is same thing as

(n&1==1)

i assume first test faster (please correct me if i'm wrong), compiler recognize , "correct" it? makes difference in performance? 

void main() {     int n = 5;     int = n & 1; }     call    __main     movl    $5, -4(%rbp)     movl    -4(%rbp), %eax     andl    $1, %eax     movl    %eax, -8(%rbp)     addq    $48, %rsp     popq    %rbp     ret  void main() {     int n = 5;     int = n % 2; }     call    __main     movl    $5, -4(%rbp)     movl    -4(%rbp), %eax     cltd     shrl    $31, %edx     addl    %edx, %eax     andl    $1, %eax     subl    %edx, %eax     movl    %eax, -8(%rbp)     addq    $48, %rsp     popq    %rbp     ret

tried gcc.exe (gcc) 4.9.2 using -s -o0
seams & 1 check parity better.


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