#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 main(int argc, const char *argv[]) {
  char str[24] = "First string";
  char *ptr = "Second string";
  printf("str = %s\n", str);
  printf("ptr = %s\n", ptr);
  ptr = ++ptr;
  printf("ptr = %s\n", ptr);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x40,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    0xed3(%rip),%rax
mov    %rax,-0x30(%rbp)
mov    0xed0(%rip),%rax
mov    %rax,-0x28(%rbp)
mov    0xecd(%rip),%rax
mov    %rax,-0x20(%rbp)
lea    0xeca(%rip),%rax
mov    %rax,-0x38(%rbp)
lea    -0x30(%rbp),%rsi
lea    0xec9(%rip),%rdi
call   1030 <printf@plt>
mov    -0x38(%rbp),%rsi
lea    0xec3(%rip),%rdi
call   1030 <printf@plt>
mov    -0x38(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x38(%rbp)
mov    %rax,-0x38(%rbp)
mov    -0x38(%rbp),%rsi
lea    0xea3(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x40,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x20,%rsp
movaps 0xee4(%rip),%xmm0
movaps %xmm0,(%rsp)
movq   $0x0,0x10(%rsp)
lea    0xef6(%rip),%rdi
mov    %rsp,%rsi
call   1030 <printf@plt>
lea    0xef1(%rip),%rbx
lea    0xed2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <printf@plt>
lea    0xec4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.str = [24 x i8] c"First string\00\00\00\00\00\00\00\00\00\00\00\00"
@.str = [14 x i8] c"Second string\00"
@.str.1 = [10 x i8] c"str = %s\0A\00"
@.str.2 = [10 x i8] c"ptr = %s\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca [24 x i8]
%7 = alloca i8*
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = bitcast [24 x i8]* %6 to i8*
store i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i8** %7
%9 = getelementptr inbounds [24 x i8], [24 x i8]* %6, i64 0, i64 0
%10 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i8* %9)
%11 = load i8*, i8** %7
%12 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0), i8* %11)
%13 = load i8*, i8** %7
%14 = getelementptr inbounds i8, i8* %13, i32 1
store i8* %14, i8** %7
store i8* %14, i8** %7
%15 = load i8*, i8** %7
%16 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0), i8* %15)
ret i32 0
}

LLVM IR (-O2):
@__const.main.str = [24 x i8] c"First string\00\00\00\00\00\00\00\00\00\00\00\00"
@.str = [14 x i8] c"Second string\00"
@.str.1 = [10 x i8] c"str = %s\0A\00"
@.str.2 = [10 x i8] c"ptr = %s\0A\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca [24 x i8]
%4 = getelementptr inbounds [24 x i8], [24 x i8]* %3, i64 0, i64 0
%5 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.1, i64 0, i64 0), i8* %4)
%6 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 1))
ret i32 0
}