#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*/ freeSegment(int, int);
int /*<<< orphan*/ printf(char *, int);
scalar_t__ pthread_self();
int /*<<< orphan*/ useSegment(int, int);
int /*<<< orphan*/ usleep(int);
void *trainEB(void *arg) {
  while (1) {
    useSegment(4, 2);
    printf("Train Z ID = %d occupies EC\n", (int)pthread_self());
    usleep(6000000);
    freeSegment(4, 2);
    printf("Train Z ID = %d left EC\n", (int)pthread_self());
    useSegment(2, 1);
    printf("Train Z ID = %d occupies CB\n", (int)pthread_self());
    usleep(6000000);
    freeSegment(2, 1);
    printf("Train Z ID = %d left CB [FINISHED]\n", (int)pthread_self());
    break;
  }
}


x86 assembly (clang, -O0):
<trainEB>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
mov    $0x4,%edi
mov    $0x2,%esi
call   1040 <useSegment@plt>
mov    $0x0,%al
call   1050 <pthread_self@plt>
mov    %eax,%esi
lea    0xe85(%rip),%rdi
call   1030 <printf@plt>
mov    $0x5b8d80,%edi
call   1070 <usleep@plt>
mov    $0x4,%edi
mov    $0x2,%esi
call   1060 <freeSegment@plt>
mov    $0x0,%al
call   1050 <pthread_self@plt>
mov    %eax,%esi
lea    0xe74(%rip),%rdi
call   1030 <printf@plt>
mov    $0x2,%edi
mov    $0x1,%esi
call   1040 <useSegment@plt>
mov    $0x0,%al
call   1050 <pthread_self@plt>
mov    %eax,%esi
lea    0xe69(%rip),%rdi
call   1030 <printf@plt>
mov    $0x5b8d80,%edi
call   1070 <usleep@plt>
mov    $0x2,%edi
mov    $0x1,%esi
call   1060 <freeSegment@plt>
mov    $0x0,%al
call   1050 <pthread_self@plt>
mov    %eax,%esi
lea    0xe58(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<trainEB>:
push   %rax
mov    $0x4,%edi
mov    $0x2,%esi
call   1040 <useSegment@plt>
xor    %eax,%eax
call   1050 <pthread_self@plt>
lea    0xe92(%rip),%rdi
mov    %eax,%esi
call   1030 <printf@plt>
mov    $0x5b8d80,%edi
call   1070 <usleep@plt>
mov    $0x4,%edi
mov    $0x2,%esi
call   1060 <freeSegment@plt>
xor    %eax,%eax
call   1050 <pthread_self@plt>
lea    0xe81(%rip),%rdi
mov    %eax,%esi
call   1030 <printf@plt>
mov    $0x2,%edi
mov    $0x1,%esi
call   1040 <useSegment@plt>
xor    %eax,%eax
call   1050 <pthread_self@plt>
lea    0xe76(%rip),%rdi
mov    %eax,%esi
call   1030 <printf@plt>
mov    $0x5b8d80,%edi
call   1070 <usleep@plt>
mov    $0x2,%edi
mov    $0x1,%esi
call   1060 <freeSegment@plt>
xor    %eax,%eax
call   1050 <pthread_self@plt>
lea    0xe65(%rip),%rdi
mov    %eax,%esi
pop    %rax
jmp    1030 <printf@plt>

LLVM IR (-O0):
@.str = [29 x i8] c"Train Z ID = %d occupies EC\0A\00"
@.str.1 = [25 x i8] c"Train Z ID = %d left EC\0A\00"
@.str.2 = [29 x i8] c"Train Z ID = %d occupies CB\0A\00"
@.str.3 = [36 x i8] c"Train Z ID = %d left CB [FINISHED]\0A\00"
define i8* @trainEB(i8* %0) {
%2 = alloca i8*
%3 = alloca i8*
store i8* %0, i8** %3
br label %4
4: ; preds = %1
%5 = call i32 @useSegment(i32 4, i32 2)
%6 = call i64 (...) @pthread_self()
%7 = trunc i64 %6 to i32
%8 = call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str, i64 0, i64 0), i32 %7)
%9 = call i32 @usleep(i32 6000000)
%10 = call i32 @freeSegment(i32 4, i32 2)
%11 = call i64 (...) @pthread_self()
%12 = trunc i64 %11 to i32
%13 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0), i32 %12)
%14 = call i32 @useSegment(i32 2, i32 1)
%15 = call i64 (...) @pthread_self()
%16 = trunc i64 %15 to i32
%17 = call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.2, i64 0, i64 0), i32 %16)
%18 = call i32 @usleep(i32 6000000)
%19 = call i32 @freeSegment(i32 2, i32 1)
%20 = call i64 (...) @pthread_self()
%21 = trunc i64 %20 to i32
%22 = call i32 @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.3, i64 0, i64 0), i32 %21)
br label %23
23: ; preds = %4
%24 = load i8*, i8** %2
ret i8* %24
}

LLVM IR (-O2):
@.str = [29 x i8] c"Train Z ID = %d occupies EC\0A\00"
@.str.1 = [25 x i8] c"Train Z ID = %d left EC\0A\00"
@.str.2 = [29 x i8] c"Train Z ID = %d occupies CB\0A\00"
@.str.3 = [36 x i8] c"Train Z ID = %d left CB [FINISHED]\0A\00"
define noalias i8* @trainEB(i8* nocapture readnone %0) {
%2 = tail call i32 @useSegment(i32 4, i32 2)
%3 = tail call i64 (...) @pthread_self()
%4 = trunc i64 %3 to i32
%5 = tail call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str, i64 0, i64 0), i32 %4)
%6 = tail call i32 @usleep(i32 6000000)
%7 = tail call i32 @freeSegment(i32 4, i32 2)
%8 = tail call i64 (...) @pthread_self()
%9 = trunc i64 %8 to i32
%10 = tail call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0), i32 %9)
%11 = tail call i32 @useSegment(i32 2, i32 1)
%12 = tail call i64 (...) @pthread_self()
%13 = trunc i64 %12 to i32
%14 = tail call i32 @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.2, i64 0, i64 0), i32 %13)
%15 = tail call i32 @usleep(i32 6000000)
%16 = tail call i32 @freeSegment(i32 2, i32 1)
%17 = tail call i64 (...) @pthread_self()
%18 = trunc i64 %17 to i32
%19 = tail call i32 @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.3, i64 0, i64 0), i32 %18)
ret i8* undef
}