#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, int, int const);
int main(int argc, char const *argv[]) {
  const int days[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
  int index;
  for (index = 0; index < sizeof days / sizeof days[0]; index++) {
    printf("Month %2d has %d days.\n", index + 1, days[index]);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x50,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
lea    -0x40(%rbp),%rdi
lea    0xebf(%rip),%rsi
mov    $0x30,%edx
call   1040 <memcpy@plt>
movl   $0x0,-0x44(%rbp)
movslq -0x44(%rbp),%rax
cmp    $0xc,%rax
jae    1188 <main+0x68>
mov    -0x44(%rbp),%esi
add    $0x1,%esi
movslq -0x44(%rbp),%rax
mov    -0x40(%rbp,%rax,4),%edx
lea    0xebb(%rip),%rdi
call   1030 <printf@plt>
mov    -0x44(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x44(%rbp)
jmp    1152 <main+0x32>
xor    %eax,%eax
add    $0x50,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xee8(%rip),%rbx
mov    %rbx,%rdi
mov    $0x1,%esi
mov    $0x1f,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
mov    $0x1c,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
mov    $0x1f,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
mov    $0x1e,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x5,%esi
mov    $0x1f,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x6,%esi
mov    $0x1e,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x7,%esi
mov    $0x1f,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x8,%esi
mov    $0x1f,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0x9,%esi
mov    $0x1e,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0xa,%esi
mov    $0x1f,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0xb,%esi
mov    $0x1e,%edx
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    $0xc,%esi
mov    $0x1f,%edx
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.days = [12 x i32] [i32 31, i32 28, i32 31, i32 30, i32 31, i32 30, i32 31, i32 31, i32 30, i32 31, i32 30, i32 31]
@.str = [24 x i8] c"Month %2d has %d days.\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca [12 x i32]
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = bitcast [12 x i32]* %6 to i8*
store i32 0, i32* %7
br label %9
9: ; preds = %21, %2
%10 = load i32, i32* %7
%11 = sext i32 %10 to i64
%12 = icmp ult i64 %11, 12
br i1 %12, label %13, label %24
13: ; preds = %9
%14 = load i32, i32* %7
%15 = add nsw i32 %14, 1
%16 = load i32, i32* %7
%17 = sext i32 %16 to i64
%18 = getelementptr inbounds [12 x i32], [12 x i32]* %6, i64 0, i64 %17
%19 = load i32, i32* %18
%20 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 %15, i32 %19)
br label %21
21: ; preds = %13
%22 = load i32, i32* %7
%23 = add nsw i32 %22, 1
store i32 %23, i32* %7
br label %9
24: ; preds = %9
ret i32 0
}

LLVM IR (-O2):
@.str = [24 x i8] c"Month %2d has %d days.\0A\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 1, i32 31)
%4 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 2, i32 28)
%5 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 3, i32 31)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 4, i32 30)
%7 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 5, i32 31)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 6, i32 30)
%9 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 7, i32 31)
%10 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 8, i32 31)
%11 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 9, i32 30)
%12 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 10, i32 31)
%13 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 11, i32 30)
%14 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i32 12, i32 31)
ret i32 0
}