#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 */
typedef int time_t;
struct tm {
  int tm_year;
  int tm_mon;
  int tm_mday;
  int tm_hour;
  int tm_min;
  int tm_sec;
};

/* Variables and functions */
struct tm *gmtime(int *);
int /*<<< orphan*/ printf(char *, int, ...);
int time(int /*<<< orphan*/ *);
int main() {
  time_t ctime;
  struct tm *tm;
  ctime = time(NULL);
  tm = gmtime(&ctime);
  printf("ctime is %d\n", ctime);
  printf("Now is %d,%d,%d %d : %d : %d\n", tm->tm_year, tm->tm_mon, tm->tm_mday,
         tm->tm_hour, tm->tm_min, tm->tm_sec);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
xor    %eax,%eax
mov    %eax,%edi
call   1040 <time@plt>
mov    %eax,-0x8(%rbp)
lea    -0x8(%rbp),%rdi
call   1050 <gmtime@plt>
mov    %rax,-0x10(%rbp)
mov    -0x8(%rbp),%esi
lea    0xe9e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rax
mov    (%rax),%esi
mov    -0x10(%rbp),%rax
mov    0x4(%rax),%edx
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%ecx
mov    -0x10(%rbp),%rax
mov    0xc(%rax),%r8d
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%r9d
mov    -0x10(%rbp),%rax
mov    0x14(%rax),%eax
lea    0xe72(%rip),%rdi
mov    %eax,(%rsp)
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
xor    %edi,%edi
call   1040 <time@plt>
mov    %eax,0xc(%rsp)
lea    0xc(%rsp),%rdi
call   1050 <gmtime@plt>
mov    %rax,%rbx
mov    0xc(%rsp),%esi
lea    0xea8(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
mov    (%rbx),%esi
mov    0x4(%rbx),%edx
mov    0x8(%rbx),%ecx
mov    0xc(%rbx),%r8d
mov    0x10(%rbx),%r9d
mov    0x14(%rbx),%eax
mov    %eax,(%rsp)
lea    0xe91(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
%struct.tm = type { i32, i32, i32, i32, i32, i32 }
@.str = [13 x i8] c"ctime is %d\0A\00"
@.str.1 = [30 x i8] c"Now is %d,%d,%d %d : %d : %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca %struct.tm*
store i32 0, i32* %1
%4 = call i32 @time(i32* null)
store i32 %4, i32* %2
%5 = call %struct.tm* @gmtime(i32* %2)
store %struct.tm* %5, %struct.tm** %3
%6 = load i32, i32* %2
%7 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %6)
%8 = load %struct.tm*, %struct.tm** %3
%9 = getelementptr inbounds %struct.tm, %struct.tm* %8, i32 0, i32 0
%10 = load i32, i32* %9
%11 = load %struct.tm*, %struct.tm** %3
%12 = getelementptr inbounds %struct.tm, %struct.tm* %11, i32 0, i32 1
%13 = load i32, i32* %12
%14 = load %struct.tm*, %struct.tm** %3
%15 = getelementptr inbounds %struct.tm, %struct.tm* %14, i32 0, i32 2
%16 = load i32, i32* %15
%17 = load %struct.tm*, %struct.tm** %3
%18 = getelementptr inbounds %struct.tm, %struct.tm* %17, i32 0, i32 3
%19 = load i32, i32* %18
%20 = load %struct.tm*, %struct.tm** %3
%21 = getelementptr inbounds %struct.tm, %struct.tm* %20, i32 0, i32 4
%22 = load i32, i32* %21
%23 = load %struct.tm*, %struct.tm** %3
%24 = getelementptr inbounds %struct.tm, %struct.tm* %23, i32 0, i32 5
%25 = load i32, i32* %24
%26 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.1, i64 0, i64 0), i32 %10, i32 %13, i32 %16, i32 %19, i32 %22, i32 %25)
ret i32 0
}

LLVM IR (-O2):
%struct.tm = type { i32, i32, i32, i32, i32, i32 }
@.str = [13 x i8] c"ctime is %d\0A\00"
@.str.1 = [30 x i8] c"Now is %d,%d,%d %d : %d : %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @time(i32* null)
store i32 %3, i32* %1
%4 = call %struct.tm* @gmtime(i32* %1)
%5 = load i32, i32* %1
%6 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %5)
%7 = getelementptr inbounds %struct.tm, %struct.tm* %4, i64 0, i32 0
%8 = load i32, i32* %7
%9 = getelementptr inbounds %struct.tm, %struct.tm* %4, i64 0, i32 1
%10 = load i32, i32* %9
%11 = getelementptr inbounds %struct.tm, %struct.tm* %4, i64 0, i32 2
%12 = load i32, i32* %11
%13 = getelementptr inbounds %struct.tm, %struct.tm* %4, i64 0, i32 3
%14 = load i32, i32* %13
%15 = getelementptr inbounds %struct.tm, %struct.tm* %4, i64 0, i32 4
%16 = load i32, i32* %15
%17 = getelementptr inbounds %struct.tm, %struct.tm* %4, i64 0, i32 5
%18 = load i32, i32* %17
%19 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.1, i64 0, i64 0), i32 %8, i32 %10, i32 %12, i32 %14, i32 %16, i32 %18)
ret i32 0
}