#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*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, ...);
int /*<<< orphan*/ stderr;
void usage(const char progname[]) {
  fprintf(stderr, "%s usage: \n", progname);
  fprintf(stderr, "\t%s [-f] <COW file> <backing file>\n", progname);
  fprintf(stderr, "\t-f forces overwrite of an existing COW file\n");
  exit(2);
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    0x2ead(%rip),%rax
mov    (%rax),%edi
mov    -0x8(%rbp),%rdx
lea    0xec0(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e92(%rip),%rax
mov    (%rax),%edi
mov    -0x8(%rbp),%rdx
lea    0xeb1(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    0x2e77(%rip),%rax
mov    (%rax),%edi
lea    0xebe(%rip),%rsi
mov    $0x0,%al
call   1030 <fprintf@plt>
mov    $0x2,%edi
call   1040 <exit@plt>

x86 assembly (clang, -O2):
<usage>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%rbx
mov    0x2eb2(%rip),%r14
mov    (%r14),%edi
lea    0xec8(%rip),%rsi
mov    %rbx,%rdx
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    (%r14),%edi
lea    0xec0(%rip),%rsi
mov    %rbx,%rdx
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    (%r14),%edi
lea    0xed0(%rip),%rsi
xor    %eax,%eax
call   1030 <fprintf@plt>
mov    $0x2,%edi
call   1040 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [12 x i8] c"%s usage: \0A\00"
@.str.1 = [36 x i8] c"\09%s [-f] <COW file> <backing file>\0A\00"
@.str.2 = [46 x i8] c"\09-f forces overwrite of an existing COW file\0A\00"
define void @usage(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i32, i32* @stderr
%4 = load i8*, i8** %2
%5 = call i32 (i32, i8*, ...) @fprintf(i32 %3, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* %4)
%6 = load i32, i32* @stderr
%7 = load i8*, i8** %2
%8 = call i32 (i32, i8*, ...) @fprintf(i32 %6, i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.1, i64 0, i64 0), i8* %7)
%9 = load i32, i32* @stderr
%10 = call i32 (i32, i8*, ...) @fprintf(i32 %9, i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.2, i64 0, i64 0))
%11 = call i32 @exit(i32 2)
unreachable
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [12 x i8] c"%s usage: \0A\00"
@.str.1 = [36 x i8] c"\09%s [-f] <COW file> <backing file>\0A\00"
@.str.2 = [46 x i8] c"\09-f forces overwrite of an existing COW file\0A\00"
define void @usage(i8* %0) {
%2 = load i32, i32* @stderr
%3 = tail call i32 (i32, i8*, ...) @fprintf(i32 %2, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i8* %0)
%4 = load i32, i32* @stderr
%5 = tail call i32 (i32, i8*, ...) @fprintf(i32 %4, i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.1, i64 0, i64 0), i8* %0)
%6 = load i32, i32* @stderr
%7 = tail call i32 (i32, i8*, ...) @fprintf(i32 %6, i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.2, i64 0, i64 0))
%8 = tail call i32 @exit(i32 2)
unreachable
}