int main() {
  int my_array[3] = {1, 2, 3};
  for (typeof(*my_array) *it = my_array;
       it != my_array + sizeof(my_array) / sizeof(my_array[0]); it++) {
    printf("%d\n", *it);
    printf("%d\n", *it * 10);
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    0xeda(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    0xed8(%rip),%eax
mov    %eax,-0x8(%rbp)
lea    -0x10(%rbp),%rax
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rax
lea    -0x10(%rbp),%rcx
add    $0xc,%rcx
cmp    %rcx,%rax
je     118a <main+0x7a>
mov    -0x18(%rbp),%rax
mov    (%rax),%esi
lea    0xeaf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%rax
imul   $0xa,(%rax),%esi
lea    0xe9a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x18(%rbp),%rax
add    $0x4,%rax
mov    %rax,-0x18(%rbp)
jmp    113b <main+0x2b>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xee8(%rip),%rbx
mov    %rbx,%rdi
mov    $0x1,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0xa,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x14,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x1e,%esi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.my_array = [3 x i32] [i32 1, i32 2, i32 3]
@.str = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [3 x i32]
%3 = alloca i32*
store i32 0, i32* %1
%4 = bitcast [3 x i32]* %2 to i8*
%5 = getelementptr inbounds [3 x i32], [3 x i32]* %2, i64 0, i64 0
store i32* %5, i32** %3
br label %6
6: ; preds = %19, %0
%7 = load i32*, i32** %3
%8 = getelementptr inbounds [3 x i32], [3 x i32]* %2, i64 0, i64 0
%9 = getelementptr inbounds i32, i32* %8, i64 3
%10 = icmp ne i32* %7, %9
br i1 %10, label %11, label %22
11: ; preds = %6
%12 = load i32*, i32** %3
%13 = load i32, i32* %12
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %13)
%15 = load i32*, i32** %3
%16 = load i32, i32* %15
%17 = mul nsw i32 %16, 10
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %17)
br label %19
19: ; preds = %11
%20 = load i32*, i32** %3
%21 = getelementptr inbounds i32, i32* %20, i32 1
store i32* %21, i32** %3
br label %6
22: ; preds = %6
%23 = load i32, i32* %1
ret i32 %23
}

LLVM IR (-O2):
@.str = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 1)
%2 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 10)
%3 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 2)
%4 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 20)
%5 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 3)
%6 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 30)
ret i32 0
}