#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 modified_print(const char *str) {
  int i = 0;
  while (str[i] != '\0') {
    if (str[i] == 'a') {
      printf("%s", "xay");
    } else {
      printf("%c", str[i]);
    }
    i++;
  }
  printf("\n");
}


x86 assembly (clang, -O0):
<modified_print>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0x0,%eax
je     118f <modified_print+0x7f>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0x61,%eax
jne    1167 <modified_print+0x57>
lea    0xeac(%rip),%rdi
lea    0xea8(%rip),%rsi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1181 <modified_print+0x71>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movsbl (%rax,%rcx,1),%esi
lea    0xe8d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1123 <modified_print+0x13>
lea    0xe74(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<modified_print>:
push   %r15
push   %r14
push   %rbx
mov    %rdi,%rbx
lea    0xed1(%rip),%r14
lea    0xecd(%rip),%r15
jmp    1151 <modified_print+0x31>
nopl   0x0(%rax,%rax,1)
mov    %r14,%rdi
mov    %r15,%rsi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
movsbl (%rbx),%edi
cmp    $0x61,%edi
je     1140 <modified_print+0x20>
test   %dil,%dil
je     1169 <modified_print+0x49>
call   1030 <putchar@plt>
add    $0x1,%rbx
jmp    1151 <modified_print+0x31>
mov    $0xa,%edi
pop    %rbx
pop    %r14
pop    %r15
jmp    1030 <putchar@plt>

LLVM IR (-O0):
@.str = [3 x i8] c"%s\00"
@.str.1 = [4 x i8] c"xay\00"
@.str.2 = [3 x i8] c"%c\00"
@.str.3 = [2 x i8] c"\0A\00"
define void @modified_print(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
store i8* %0, i8** %2
store i32 0, i32* %3
br label %4
4: ; preds = %30, %1
%5 = load i8*, i8** %2
%6 = load i32, i32* %3
%7 = sext i32 %6 to i64
%8 = getelementptr inbounds i8, i8* %5, i64 %7
%9 = load i8, i8* %8
%10 = sext i8 %9 to i32
%11 = icmp ne i32 %10, 0
br i1 %11, label %12, label %33
12: ; preds = %4
%13 = load i8*, i8** %2
%14 = load i32, i32* %3
%15 = sext i32 %14 to i64
%16 = getelementptr inbounds i8, i8* %13, i64 %15
%17 = load i8, i8* %16
%18 = sext i8 %17 to i32
%19 = icmp eq i32 %18, 97
br i1 %19, label %20, label %22
20: ; preds = %12
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
br label %30
22: ; preds = %12
%23 = load i8*, i8** %2
%24 = load i32, i32* %3
%25 = sext i32 %24 to i64
%26 = getelementptr inbounds i8, i8* %23, i64 %25
%27 = load i8, i8* %26
%28 = sext i8 %27 to i32
%29 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32 %28)
br label %30
30: ; preds = %22, %20
%31 = load i32, i32* %3
%32 = add nsw i32 %31, 1
store i32 %32, i32* %3
br label %4
33: ; preds = %4
%34 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [3 x i8] c"%s\00"
@.str.1 = [4 x i8] c"xay\00"
define void @modified_print(i8* nocapture %0) {
br label %2
2: ; preds = %11, %1
%3 = phi i64 [ %12, %11 ], [ 0, %1 ]
%4 = getelementptr inbounds i8, i8* %0, i64 %3
%5 = load i8, i8* %4
switch i8 %5, label %8 [
i8 0, label %13
i8 97, label %6
]
6: ; preds = %2
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0))
br label %11
8: ; preds = %2
%9 = sext i8 %5 to i32
%10 = tail call i32 @putchar(i32 %9)
br label %11
11: ; preds = %8, %6
%12 = add nuw i64 %3, 1
br label %2
13: ; preds = %2
%14 = tail call i32 @putchar(i32 10)
ret void
}