#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*/ fprintf(int /*<<< orphan*/, char *);
int /*<<< orphan*/ stderr;
void usage(void) {
  fprintf(stderr, "Usage: context_switch2 <options> CPU1 CPU2\n\n");
  fprintf(stderr, "\t\t--test=X\tpipe, futex or yield (default)\n");
  fprintf(stderr, "\t\t--process\tUse processes (default threads)\n");
  fprintf(stderr, "\t\t--timeout=X\tDuration in seconds to run (default 30)\n");
  fprintf(stderr, "\t\t--vdso\t\ttouch VDSO\n");
  fprintf(stderr, "\t\t--no-fp\t\tDon't touch FP\n");
  fprintf(stderr, "\t\t--no-vector\tDon't touch vector\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
mov    0x2ec5(%rip),%rax
mov    (%rax),%edi
lea    0xedc(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2eb0(%rip),%rax
mov    (%rax),%edi
lea    0xef4(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e9b(%rip),%rax
mov    (%rax),%edi
lea    0xf0a(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e86(%rip),%rax
mov    (%rax),%edi
lea    0xf22(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e71(%rip),%rax
mov    (%rax),%edi
lea    0xf44(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e5c(%rip),%rax
mov    (%rax),%edi
lea    0xf45(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e47(%rip),%rax
mov    (%rax),%edi
lea    0xf4b(%rip),%rsi
call   1030 <fprintf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rbx
mov    0x2ec8(%rip),%rbx
mov    (%rbx),%edi
lea    0xedf(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xefe(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf1b(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf3a(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf63(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf6b(%rip),%rsi
call   1030 <fprintf@plt>
mov    (%rbx),%edi
lea    0xf78(%rip),%rsi
pop    %rbx
jmp    1030 <fprintf@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [45 x i8] c"Usage: context_switch2 <options> CPU1 CPU2\0A\0A\00"
@.str.1 = [43 x i8] c"\09\09--test=X\09pipe, futex or yield (default)\0A\00"
@.str.2 = [45 x i8] c"\09\09--process\09Use processes (default threads)\0A\00"
@.str.3 = [55 x i8] c"\09\09--timeout=X\09Duration in seconds to run (default 30)\0A\00"
@.str.4 = [22 x i8] c"\09\09--vdso\09\09touch VDSO\0A\00"
@.str.5 = [27 x i8] c"\09\09--no-fp\09\09Don't touch FP\0A\00"
@.str.6 = [34 x i8] c"\09\09--no-vector\09Don't touch vector\0A\00"
define void @usage() {
%1 = load i32, i32* @stderr
%2 = call i32 @fprintf(i32 %1, i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str, i64 0, i64 0))
%3 = load i32, i32* @stderr
%4 = call i32 @fprintf(i32 %3, i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str.1, i64 0, i64 0))
%5 = load i32, i32* @stderr
%6 = call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str.2, i64 0, i64 0))
%7 = load i32, i32* @stderr
%8 = call i32 @fprintf(i32 %7, i8* getelementptr inbounds ([55 x i8], [55 x i8]* @.str.3, i64 0, i64 0))
%9 = load i32, i32* @stderr
%10 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.4, i64 0, i64 0))
%11 = load i32, i32* @stderr
%12 = call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.5, i64 0, i64 0))
%13 = load i32, i32* @stderr
%14 = call i32 @fprintf(i32 %13, i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.6, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [45 x i8] c"Usage: context_switch2 <options> CPU1 CPU2\0A\0A\00"
@.str.1 = [43 x i8] c"\09\09--test=X\09pipe, futex or yield (default)\0A\00"
@.str.2 = [45 x i8] c"\09\09--process\09Use processes (default threads)\0A\00"
@.str.3 = [55 x i8] c"\09\09--timeout=X\09Duration in seconds to run (default 30)\0A\00"
@.str.4 = [22 x i8] c"\09\09--vdso\09\09touch VDSO\0A\00"
@.str.5 = [27 x i8] c"\09\09--no-fp\09\09Don't touch FP\0A\00"
@.str.6 = [34 x i8] c"\09\09--no-vector\09Don't touch vector\0A\00"
define void @usage() {
%1 = load i32, i32* @stderr
%2 = tail call i32 @fprintf(i32 %1, i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str, i64 0, i64 0))
%3 = load i32, i32* @stderr
%4 = tail call i32 @fprintf(i32 %3, i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str.1, i64 0, i64 0))
%5 = load i32, i32* @stderr
%6 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([45 x i8], [45 x i8]* @.str.2, i64 0, i64 0))
%7 = load i32, i32* @stderr
%8 = tail call i32 @fprintf(i32 %7, i8* getelementptr inbounds ([55 x i8], [55 x i8]* @.str.3, i64 0, i64 0))
%9 = load i32, i32* @stderr
%10 = tail call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.4, i64 0, i64 0))
%11 = load i32, i32* @stderr
%12 = tail call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.5, i64 0, i64 0))
%13 = load i32, i32* @stderr
%14 = tail call i32 @fprintf(i32 %13, i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.6, i64 0, i64 0))
ret void
}