#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) {
  printf("Hello !\n");
  printf("world"
         "\n");
  printf("world"
         " is a stage\n");
  int i;
  for (i = 1; i < 10; i++) {
    printf("i * i"
           " = %d\n",
           i * i);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeda(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xed5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xece(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x1,-0x8(%rbp)
cmpl   $0xa,-0x8(%rbp)
jge    117d <main+0x6d>
mov    -0x8(%rbp),%esi
imul   -0x8(%rbp),%esi
lea    0xeba(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1150 <main+0x40>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xee4(%rip),%rdi
call   1030 <puts@plt>
lea    0xee0(%rip),%rdi
call   1030 <puts@plt>
lea    0xeda(%rip),%rdi
call   1030 <puts@plt>
lea    0xeb4(%rip),%rbx
mov    %rbx,%rdi
mov    $0x1,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x9,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x10,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x19,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x24,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x31,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x40,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x51,%esi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [9 x i8] c"Hello !\0A\00"
@.str.1 = [7 x i8] c"world\0A\00"
@.str.2 = [18 x i8] c"world is a stage\0A\00"
@.str.3 = [12 x i8] c"i * i = %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0))
store i32 1, i32* %2
br label %6
6: ; preds = %14, %0
%7 = load i32, i32* %2
%8 = icmp slt i32 %7, 10
br i1 %8, label %9, label %17
9: ; preds = %6
%10 = load i32, i32* %2
%11 = load i32, i32* %2
%12 = mul nsw i32 %10, %11
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 %12)
br label %14
14: ; preds = %9
%15 = load i32, i32* %2
%16 = add nsw i32 %15, 1
store i32 %16, i32* %2
br label %6
17: ; preds = %6
ret i32 0
}

LLVM IR (-O2):
@.str.3 = [12 x i8] c"i * i = %d\0A\00"
@str = [8 x i8] c"Hello !\00"
@str.4 = [6 x i8] c"world\00"
@str.5 = [17 x i8] c"world is a stage\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([6 x i8], [6 x i8]* @str.4, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @str.5, i64 0, i64 0))
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 1)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 4)
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 9)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 16)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 25)
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 36)
%10 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 49)
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 64)
%12 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.3, i64 0, i64 0), i32 81)
ret i32 0
}