#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*/ printf(char *);
void usage() {
  printf("\n");
  printf("libcmime - simple api demonstration\n");
  printf("-----------------------------------\n");
  printf("demonstrates: parsing an email message \n");
  printf(
      "output: output is written to stdout if no output file is specified\n");
  printf("required parameter: -i /path/to/input_file\n");
}


x86 assembly (clang, -O0):
<usage>:
push   %rbp
mov    %rsp,%rbp
lea    0xf56(%rip),%rdi
call   1030 <printf@plt>
lea    0xed9(%rip),%rdi
call   1030 <printf@plt>
lea    0xef2(%rip),%rdi
call   1030 <printf@plt>
lea    0xf0b(%rip),%rdi
call   1030 <printf@plt>
lea    0xf28(%rip),%rdi
call   1030 <printf@plt>
lea    0xf60(%rip),%rdi
call   1030 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<usage>:
push   %rax
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xece(%rip),%rdi
call   1040 <puts@plt>
lea    0xee6(%rip),%rdi
call   1040 <puts@plt>
lea    0xefe(%rip),%rdi
call   1040 <puts@plt>
lea    0xf1a(%rip),%rdi
call   1040 <puts@plt>
lea    0xf51(%rip),%rdi
pop    %rax
jmp    1040 <puts@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"\0A\00"
@.str.1 = [37 x i8] c"libcmime - simple api demonstration\0A\00"
@.str.2 = [37 x i8] c"-----------------------------------\0A\00"
@.str.3 = [41 x i8] c"demonstrates: parsing an email message \0A\00"
@.str.4 = [68 x i8] c"output: output is written to stdout if no output file is specified\0A\00"
@.str.5 = [44 x i8] c"required parameter: -i /path/to/input_file\0A\00"
define void @usage() {
%1 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([41 x i8], [41 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([68 x i8], [68 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.5, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@str = [36 x i8] c"libcmime - simple api demonstration\00"
@str.6 = [36 x i8] c"-----------------------------------\00"
@str.7 = [40 x i8] c"demonstrates: parsing an email message \00"
@str.8 = [67 x i8] c"output: output is written to stdout if no output file is specified\00"
@str.9 = [43 x i8] c"required parameter: -i /path/to/input_file\00"
define void @usage() {
%1 = tail call i32 @putchar(i32 10)
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @str, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @str.6, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([40 x i8], [40 x i8]* @str.7, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([67 x i8], [67 x i8]* @str.8, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([43 x i8], [43 x i8]* @str.9, i64 0, i64 0))
ret void
}