#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*/ My_strcat(unsigned char *, unsigned char *);
int /*<<< orphan*/ printf(char *, unsigned char *);
int main() {
  unsigned char str1[100] = "Madhiyan";
  unsigned char str2[100] = "Swathi";
  My_strcat(str1, str2);
  printf("\r\n%s\r\n", str1);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0xe0,%rsp
lea    -0x70(%rbp),%rdi
lea    0xeaa(%rip),%rsi
mov    $0x64,%edx
call   1050 <memcpy@plt>
lea    -0xe0(%rbp),%rdi
xor    %esi,%esi
mov    $0x64,%edx
call   1040 <memset@plt>
movb   $0x53,-0xe0(%rbp)
movb   $0x77,-0xdf(%rbp)
movb   $0x61,-0xde(%rbp)
movb   $0x74,-0xdd(%rbp)
movb   $0x68,-0xdc(%rbp)
movb   $0x69,-0xdb(%rbp)
lea    -0x70(%rbp),%rdi
lea    -0xe0(%rbp),%rsi
call   1060 <My_strcat@plt>
lea    -0x70(%rbp),%rsi
lea    0xeac(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0xe0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0xe0,%rsp
movaps 0xf21(%rip),%xmm0
movaps %xmm0,0xc0(%rsp)
movaps 0xf02(%rip),%xmm0
movaps %xmm0,0xb0(%rsp)
movaps 0xee3(%rip),%xmm0
movaps %xmm0,0xa0(%rsp)
movaps 0xec4(%rip),%xmm0
movaps %xmm0,0x90(%rsp)
movaps 0xea5(%rip),%xmm0
movaps %xmm0,0x80(%rsp)
movaps 0xe86(%rip),%xmm0
movaps %xmm0,0x70(%rsp)
movl   $0x0,0xd0(%rsp)
xorps  %xmm0,%xmm0
movaps %xmm0,(%rsp)
movaps %xmm0,0x50(%rsp)
movaps %xmm0,0x40(%rsp)
movaps %xmm0,0x30(%rsp)
movaps %xmm0,0x20(%rsp)
movaps %xmm0,0x10(%rsp)
movl   $0x0,0x60(%rsp)
movl   $0x74617753,(%rsp)
movw   $0x6968,0x4(%rsp)
lea    0x70(%rsp),%rbx
mov    %rsp,%rsi
mov    %rbx,%rdi
call   1040 <My_strcat@plt>
lea    0xe8d(%rip),%rdi
mov    %rbx,%rsi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0xe0,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.str1 = [100 x i8] c"Madhiyan\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\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 = [7 x i8] c"\0D\0A%s\0D\0A\00"
define i32 @main() {
%1 = alloca [100 x i8]
%2 = alloca [100 x i8]
%3 = bitcast [100 x i8]* %1 to i8*
%4 = bitcast [100 x i8]* %2 to i8*
%5 = bitcast i8* %4 to [100 x i8]*
%6 = getelementptr inbounds [100 x i8], [100 x i8]* %5, i32 0, i32 0
store i8 83, i8* %6
%7 = getelementptr inbounds [100 x i8], [100 x i8]* %5, i32 0, i32 1
store i8 119, i8* %7
%8 = getelementptr inbounds [100 x i8], [100 x i8]* %5, i32 0, i32 2
store i8 97, i8* %8
%9 = getelementptr inbounds [100 x i8], [100 x i8]* %5, i32 0, i32 3
store i8 116, i8* %9
%10 = getelementptr inbounds [100 x i8], [100 x i8]* %5, i32 0, i32 4
store i8 104, i8* %10
%11 = getelementptr inbounds [100 x i8], [100 x i8]* %5, i32 0, i32 5
store i8 105, i8* %11
%12 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%13 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%14 = call i32 @My_strcat(i8* %12, i8* %13)
%15 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%16 = call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8* %15)
ret i32 0
}

LLVM IR (-O2):
@__const.main.str1 = [100 x i8] c"Madhiyan\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\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 = [7 x i8] c"\0D\0A%s\0D\0A\00"
define i32 @main() {
%1 = alloca [100 x i8]
%2 = alloca [100 x i8]
%3 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%4 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
store i8 83, i8* %4
%5 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 1
store i8 119, i8* %5
%6 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 2
store i8 97, i8* %6
%7 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 3
store i8 116, i8* %7
%8 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 4
store i8 104, i8* %8
%9 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 5
store i8 105, i8* %9
%10 = call i32 @My_strcat(i8* %3, i8* %4)
%11 = call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i8* %3)
ret i32 0
}