#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 *, ...);
int main(void) {
  int array[5] = {1, 2, 3, 4, 5};
  int temp;
  for (int i = 0; i < 5; i++) {
    printf("array[%d]=%d\n", i, array[i]);
  }
  temp = array[0];
  array[0] = array[5 - 1];
  array[5 - 1] = temp;
  printf("\nafter switch:\n");
  for (int i = 0; i < 5; i++) {
    printf("array[%d]=%d\n", i, array[i]);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
mov    0xeda(%rip),%rax
mov    %rax,-0x20(%rbp)
mov    0xed7(%rip),%rax
mov    %rax,-0x18(%rbp)
mov    0xed5(%rip),%eax
mov    %eax,-0x10(%rbp)
movl   $0x0,-0x28(%rbp)
cmpl   $0x5,-0x28(%rbp)
jge    1176 <main+0x66>
mov    -0x28(%rbp),%esi
movslq -0x28(%rbp),%rax
mov    -0x20(%rbp,%rax,4),%edx
lea    0xeb3(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x28(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x28(%rbp)
jmp    1145 <main+0x35>
mov    -0x20(%rbp),%eax
mov    %eax,-0x24(%rbp)
mov    -0x10(%rbp),%eax
mov    %eax,-0x20(%rbp)
mov    -0x24(%rbp),%eax
mov    %eax,-0x10(%rbp)
lea    0xe93(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x2c(%rbp)
cmpl   $0x5,-0x2c(%rbp)
jge    11ce <main+0xbe>
mov    -0x2c(%rbp),%esi
movslq -0x2c(%rbp),%rax
mov    -0x20(%rbp,%rax,4),%edx
lea    0xe5b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x2c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x2c(%rbp)
jmp    119d <main+0x8d>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xed8(%rip),%rbx
mov    %rbx,%rdi
xor    %esi,%esi
mov    $0x1,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x1,%esi
mov    $0x2,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
mov    $0x3,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
mov    $0x4,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
mov    $0x5,%edx
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xe7e(%rip),%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
xor    %esi,%esi
mov    $0x5,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x1,%esi
mov    $0x2,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
mov    $0x3,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
mov    $0x4,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
mov    $0x1,%edx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@__const.main.array = [5 x i32] [i32 1, i32 2, i32 3, i32 4, i32 5]
@.str = [14 x i8] c"array[%d]=%d\0A\00"
@.str.1 = [16 x i8] c"\0Aafter switch:\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [5 x i32]
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
%6 = bitcast [5 x i32]* %2 to i8*
store i32 0, i32* %4
br label %7
7: ; preds = %17, %0
%8 = load i32, i32* %4
%9 = icmp slt i32 %8, 5
br i1 %9, label %10, label %20
10: ; preds = %7
%11 = load i32, i32* %4
%12 = load i32, i32* %4
%13 = sext i32 %12 to i64
%14 = getelementptr inbounds [5 x i32], [5 x i32]* %2, i64 0, i64 %13
%15 = load i32, i32* %14
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 %11, i32 %15)
br label %17
17: ; preds = %10
%18 = load i32, i32* %4
%19 = add nsw i32 %18, 1
store i32 %19, i32* %4
br label %7
20: ; preds = %7
%21 = getelementptr inbounds [5 x i32], [5 x i32]* %2, i64 0, i64 0
%22 = load i32, i32* %21
store i32 %22, i32* %3
%23 = getelementptr inbounds [5 x i32], [5 x i32]* %2, i64 0, i64 4
%24 = load i32, i32* %23
%25 = getelementptr inbounds [5 x i32], [5 x i32]* %2, i64 0, i64 0
store i32 %24, i32* %25
%26 = load i32, i32* %3
%27 = getelementptr inbounds [5 x i32], [5 x i32]* %2, i64 0, i64 4
store i32 %26, i32* %27
%28 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0))
store i32 0, i32* %5
br label %29
29: ; preds = %39, %20
%30 = load i32, i32* %5
%31 = icmp slt i32 %30, 5
br i1 %31, label %32, label %42
32: ; preds = %29
%33 = load i32, i32* %5
%34 = load i32, i32* %5
%35 = sext i32 %34 to i64
%36 = getelementptr inbounds [5 x i32], [5 x i32]* %2, i64 0, i64 %35
%37 = load i32, i32* %36
%38 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 %33, i32 %37)
br label %39
39: ; preds = %32
%40 = load i32, i32* %5
%41 = add nsw i32 %40, 1
store i32 %41, i32* %5
br label %29
42: ; preds = %29
ret i32 0
}

LLVM IR (-O2):
@.str = [14 x i8] c"array[%d]=%d\0A\00"
@str = [15 x i8] c"\0Aafter switch:\00"
define i32 @main() {
%1 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 0, i32 1)
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 1, i32 2)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 2, i32 3)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 3, i32 4)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 4, i32 5)
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @str, i64 0, i64 0))
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 0, i32 5)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 1, i32 2)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 2, i32 3)
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 3, i32 4)
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 4, i32 1)
ret i32 0
}