#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 *, char *);
int /*<<< orphan*/ replace_string(char *, char *, char *);
int main(void) {
  char text[81] = "This is a test!!!1!";
  replace_string(text, "1", "");
  printf("%s\n", text);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x60,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x60(%rbp),%rdi
lea    0xeb6(%rip),%rsi
mov    $0x51,%edx
call   1050 <memcpy@plt>
lea    -0x60(%rbp),%rdi
lea    0xef2(%rip),%rsi
lea    0xef0(%rip),%rdx
call   1030 <replace_string@plt>
lea    -0x60(%rbp),%rsi
lea    0xedd(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x60,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x60,%rsp
movaps 0xf14(%rip),%xmm0
movaps %xmm0,0x40(%rsp)
movaps 0xef8(%rip),%xmm0
movaps %xmm0,0x30(%rsp)
movaps 0xedc(%rip),%xmm0
movaps %xmm0,0x20(%rsp)
movaps 0xec0(%rip),%xmm0
movaps %xmm0,0x10(%rsp)
movaps 0xea4(%rip),%xmm0
movaps %xmm0,(%rsp)
movb   $0x0,0x50(%rsp)
lea    0xee5(%rip),%rsi
lea    0xee3(%rip),%rdx
mov    %rsp,%rbx
mov    %rbx,%rdi
call   1030 <replace_string@plt>
lea    0xece(%rip),%rdi
mov    %rbx,%rsi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x60,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.text = [81 x i8] c"This is a test!!!1!\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00"
@.str = [2 x i8] c"1\00"
@.str.1 = [1 x i8] zeroinitializer
@.str.2 = [4 x i8] c"%s\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [81 x i8]
store i32 0, i32* %1
%3 = bitcast [81 x i8]* %2 to i8*
%4 = getelementptr inbounds [81 x i8], [81 x i8]* %2, i64 0, i64 0
%5 = call i32 @replace_string(i8* %4, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.1, i64 0, i64 0))
%6 = getelementptr inbounds [81 x i8], [81 x i8]* %2, i64 0, i64 0
%7 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i8* %6)
ret i32 0
}

LLVM IR (-O2):
@__const.main.text = [81 x i8] c"This is a test!!!1!\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00"
@.str = [2 x i8] c"1\00"
@.str.1 = [1 x i8] zeroinitializer
@.str.2 = [4 x i8] c"%s\0A\00"
define i32 @main() {
%1 = alloca [81 x i8]
%2 = getelementptr inbounds [81 x i8], [81 x i8]* %1, i64 0, i64 0
%3 = call i32 @replace_string(i8* %2, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i8* %2)
ret i32 0
}