#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 find_string(char *, char *);
int /*<<< orphan*/ printf(char *, int);
int main(void) {
  int found;
  found = find_string("a chatterbox", "hat");
  printf("%i\n", found);
  found = find_string("This hat should confuse it. ha!", "hat");
  printf("%i\n", found);
  found = find_string("The mad hatter", "hat");
  printf("%i\n", found);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
lea    0xed0(%rip),%rsi
call   1040 <find_string@plt>
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xec2(%rip),%rdi
call   1030 <printf@plt>
lea    0xeba(%rip),%rdi
lea    0xeab(%rip),%rsi
call   1040 <find_string@plt>
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xe9d(%rip),%rdi
call   1030 <printf@plt>
lea    0xeb5(%rip),%rdi
lea    0xe86(%rip),%rsi
call   1040 <find_string@plt>
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%esi
lea    0xe78(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xed5(%rip),%rdi
lea    0xedb(%rip),%r14
mov    %r14,%rsi
call   1040 <find_string@plt>
lea    0xed0(%rip),%rbx
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
lea    0xec3(%rip),%rdi
mov    %r14,%rsi
call   1040 <find_string@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
lea    0xeca(%rip),%rdi
mov    %r14,%rsi
call   1040 <find_string@plt>
mov    %rbx,%rdi
mov    %eax,%esi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [13 x i8] c"a chatterbox\00"
@.str.1 = [4 x i8] c"hat\00"
@.str.2 = [4 x i8] c"%i\0A\00"
@.str.3 = [32 x i8] c"This hat should confuse it. ha!\00"
@.str.4 = [15 x i8] c"The mad hatter\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @find_string(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
store i32 %3, i32* %2
%4 = load i32, i32* %2
%5 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %4)
%6 = call i32 @find_string(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
store i32 %6, i32* %2
%7 = load i32, i32* %2
%8 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %7)
%9 = call i32 @find_string(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.4, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
store i32 %9, i32* %2
%10 = load i32, i32* %2
%11 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %10)
ret i32 0
}

LLVM IR (-O2):
@.str = [13 x i8] c"a chatterbox\00"
@.str.1 = [4 x i8] c"hat\00"
@.str.2 = [4 x i8] c"%i\0A\00"
@.str.3 = [32 x i8] c"This hat should confuse it. ha!\00"
@.str.4 = [15 x i8] c"The mad hatter\00"
define i32 @main() {
%1 = tail call i32 @find_string(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
%2 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %1)
%3 = tail call i32 @find_string(i8* getelementptr inbounds ([32 x i8], [32 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
%4 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %3)
%5 = tail call i32 @find_string(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.4, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
%6 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %5)
ret i32 0
}