#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 help(void) {
  printf("\nUsage keys:\n");
  printf(" h : This help message.\n");
  printf(" b : Get all data from the buffer.\n");
  printf(" g : Get next message from the buffer.\n");
  printf(" c : Clear the buffer.\n");
  printf(" 0 : Insert an EndOfMessage (X).\n");
  printf(" q : Quit.\n");
  printf(" CR : Do nothing.\n");
  printf(" <any others key> : Put a char in the buffer.\n");
  printf("\n");
  printf("note: stored chars start from letter 'a'.\n");
  printf("\n");
}


x86 assembly (clang, -O0):
<help>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <printf@plt>
lea    0xee7(%rip),%rdi
call   1030 <printf@plt>
lea    0xef4(%rip),%rdi
call   1030 <printf@plt>
lea    0xf0c(%rip),%rdi
call   1030 <printf@plt>
lea    0xf28(%rip),%rdi
call   1030 <printf@plt>
lea    0xf34(%rip),%rdi
call   1030 <printf@plt>
lea    0xf4a(%rip),%rdi
call   1030 <printf@plt>
lea    0xf4a(%rip),%rdi
call   1030 <printf@plt>
lea    0xf51(%rip),%rdi
call   1030 <printf@plt>
lea    0xf9d(%rip),%rdi
call   1030 <printf@plt>
lea    0xf68(%rip),%rdi
call   1030 <printf@plt>
lea    0xf85(%rip),%rdi
call   1030 <printf@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<help>:
push   %rax
lea    0xed8(%rip),%rdi
call   1040 <puts@plt>
lea    0xed9(%rip),%rdi
call   1040 <puts@plt>
lea    0xee5(%rip),%rdi
call   1040 <puts@plt>
lea    0xefc(%rip),%rdi
call   1040 <puts@plt>
lea    0xf17(%rip),%rdi
call   1040 <puts@plt>
lea    0xf22(%rip),%rdi
call   1040 <puts@plt>
lea    0xf37(%rip),%rdi
call   1040 <puts@plt>
lea    0xf36(%rip),%rdi
call   1040 <puts@plt>
lea    0xf3c(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
lea    0xf54(%rip),%rdi
call   1040 <puts@plt>
mov    $0xa,%edi
pop    %rax
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [14 x i8] c"\0AUsage keys:\0A\00"
@.str.1 = [25 x i8] c" h : This help message.\0A\00"
@.str.2 = [36 x i8] c" b : Get all data from the buffer.\0A\00"
@.str.3 = [40 x i8] c" g : Get next message from the buffer.\0A\00"
@.str.4 = [24 x i8] c" c : Clear the buffer.\0A\00"
@.str.5 = [34 x i8] c" 0 : Insert an EndOfMessage (X).\0A\00"
@.str.6 = [12 x i8] c" q : Quit.\0A\00"
@.str.7 = [19 x i8] c" CR : Do nothing.\0A\00"
@.str.8 = [47 x i8] c" <any others key> : Put a char in the buffer.\0A\00"
@.str.9 = [2 x i8] c"\0A\00"
@.str.10 = [43 x i8] c"note: stored chars start from letter 'a'.\0A\00"
define void @help() {
%1 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.5, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.6, i64 0, i64 0))
%8 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.7, i64 0, i64 0))
%9 = call i32 @printf(i8* getelementptr inbounds ([47 x i8], [47 x i8]* @.str.8, i64 0, i64 0))
%10 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.9, i64 0, i64 0))
%11 = call i32 @printf(i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str.10, i64 0, i64 0))
%12 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.9, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@str = [13 x i8] c"\0AUsage keys:\00"
@str.11 = [24 x i8] c" h : This help message.\00"
@str.12 = [35 x i8] c" b : Get all data from the buffer.\00"
@str.13 = [39 x i8] c" g : Get next message from the buffer.\00"
@str.14 = [23 x i8] c" c : Clear the buffer.\00"
@str.15 = [33 x i8] c" 0 : Insert an EndOfMessage (X).\00"
@str.16 = [11 x i8] c" q : Quit.\00"
@str.17 = [18 x i8] c" CR : Do nothing.\00"
@str.18 = [46 x i8] c" <any others key> : Put a char in the buffer.\00"
@str.19 = [42 x i8] c"note: stored chars start from letter 'a'.\00"
define void @help() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @str.11, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @str.12, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([39 x i8], [39 x i8]* @str.13, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @str.14, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @str.15, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([11 x i8], [11 x i8]* @str.16, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @str.17, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @str.18, i64 0, i64 0))
%10 = tail call i32 @putchar(i32 10)
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([42 x i8], [42 x i8]* @str.19, i64 0, i64 0))
%12 = tail call i32 @putchar(i32 10)
ret void
}