#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*/ initDevice(char *);
int /*<<< orphan*/ shutDownDevice(char *);
int /*<<< orphan*/ work(char *);
int main(void) {
  initDevice("DEVICE 1");
  work("DEVICE1");
  {
    initDevice("DEVICE 2");
    work("DEVICE2");
    shutDownDevice("DEVICE 2");
  }
  work("DEVICE 1");
  shutDownDevice("DEVICE 1");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
call   1040 <initDevice@plt>
lea    0xeb7(%rip),%rdi
call   1030 <work@plt>
lea    0xeb3(%rip),%rdi
call   1040 <initDevice@plt>
lea    0xeb0(%rip),%rdi
call   1030 <work@plt>
lea    0xe9b(%rip),%rdi
call   1050 <shutDownDevice@plt>
lea    0xe7e(%rip),%rdi
call   1030 <work@plt>
lea    0xe72(%rip),%rdi
call   1050 <shutDownDevice@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xec5(%rip),%r14
mov    %r14,%rdi
call   1040 <initDevice@plt>
lea    0xebf(%rip),%rdi
call   1030 <work@plt>
lea    0xebb(%rip),%rbx
mov    %rbx,%rdi
call   1040 <initDevice@plt>
lea    0xeb5(%rip),%rdi
call   1030 <work@plt>
mov    %rbx,%rdi
call   1050 <shutDownDevice@plt>
mov    %r14,%rdi
call   1030 <work@plt>
mov    %r14,%rdi
call   1050 <shutDownDevice@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [9 x i8] c"DEVICE 1\00"
@.str.1 = [8 x i8] c"DEVICE1\00"
@.str.2 = [9 x i8] c"DEVICE 2\00"
@.str.3 = [8 x i8] c"DEVICE2\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @initDevice(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @work(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @initDevice(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @work(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
%6 = call i32 @shutDownDevice(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0))
%7 = call i32 @work(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%8 = call i32 @shutDownDevice(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [9 x i8] c"DEVICE 1\00"
@.str.1 = [8 x i8] c"DEVICE1\00"
@.str.2 = [9 x i8] c"DEVICE 2\00"
@.str.3 = [8 x i8] c"DEVICE2\00"
define i32 @main() {
%1 = tail call i32 @initDevice(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%2 = tail call i32 @work(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0))
%3 = tail call i32 @initDevice(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0))
%4 = tail call i32 @work(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
%5 = tail call i32 @shutDownDevice(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.2, i64 0, i64 0))
%6 = tail call i32 @work(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%7 = tail call i32 @shutDownDevice(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
ret i32 0
}