#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() {
  int i, j;
  for (i = 1; i < 10; i++) {
    for (j = 1; j < 10; j++) {
      printf("%dx%d=%d   ", i, j, i * j);
    }
    printf("\n");
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x1,-0x8(%rbp)
cmpl   $0xa,-0x8(%rbp)
jge    1186 <main+0x76>
movl   $0x1,-0xc(%rbp)
cmpl   $0xa,-0xc(%rbp)
jge    116a <main+0x5a>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
mov    -0x8(%rbp),%ecx
imul   -0xc(%rbp),%ecx
lea    0xeab(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1137 <main+0x27>
lea    0xe9b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1126 <main+0x16>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
sub    $0x28,%rsp
mov    $0x1,%r14d
movl   $0x8,0x10(%rsp)
movl   $0x4,0x14(%rsp)
mov    $0x2,%r13d
movl   $0x9,0x18(%rsp)
movl   $0x7,0xc(%rsp)
movl   $0x6,0x8(%rsp)
mov    $0x5,%ebp
mov    $0x3,%r12d
nopl   (%rax)
lea    0xe89(%rip),%r15
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x1,%edx
mov    %r14d,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x2,%edx
mov    %r13d,0x20(%rsp)
mov    %r13d,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x3,%edx
mov    %r12d,0x24(%rsp)
mov    %r12d,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x4,%edx
mov    0x14(%rsp),%r13d
mov    %r13d,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x5,%edx
mov    %ebp,0x1c(%rsp)
mov    %ebp,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x6,%edx
mov    0x8(%rsp),%ebp
mov    %ebp,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x7,%edx
mov    0xc(%rsp),%r12d
mov    %r12d,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x8,%edx
mov    0x10(%rsp),%ebx
mov    %ebx,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %r15,%rdi
mov    %r14d,%esi
mov    $0x9,%edx
mov    0x18(%rsp),%r15d
mov    %r15d,%ecx
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
add    $0x1,%r14d
add    $0x8,%ebx
add    $0x4,%r13d
mov    %r13d,0x14(%rsp)
mov    0x20(%rsp),%r13d
add    $0x2,%r13d
add    $0x9,%r15d
mov    %r15d,0x18(%rsp)
add    $0x7,%r12d
mov    %r12d,0xc(%rsp)
add    $0x6,%ebp
mov    %ebp,0x8(%rsp)
mov    0x1c(%rsp),%ebp
add    $0x5,%ebp
mov    0x24(%rsp),%r12d
add    $0x3,%r12d
mov    %ebx,0x10(%rsp)
cmp    $0x50,%ebx
jne    1170 <main+0x50>
xor    %eax,%eax
add    $0x28,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [12 x i8] c"%dx%d=%d \00"
@.str.1 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 1, i32* %2
br label %4
4: ; preds = %23, %0
%5 = load i32, i32* %2
%6 = icmp slt i32 %5, 10
br i1 %6, label %7, label %26
7: ; preds = %4
store i32 1, i32* %3
br label %8
8: ; preds = %18, %7
%9 = load i32, i32* %3
%10 = icmp slt i32 %9, 10
br i1 %10, label %11, label %21
11: ; preds = %8
%12 = load i32, i32* %2
%13 = load i32, i32* %3
%14 = load i32, i32* %2
%15 = load i32, i32* %3
%16 = mul nsw i32 %14, %15
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %12, i32 %13, i32 %16)
br label %18
18: ; preds = %11
%19 = load i32, i32* %3
%20 = add nsw i32 %19, 1
store i32 %20, i32* %3
br label %8
21: ; preds = %8
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %23
23: ; preds = %21
%24 = load i32, i32* %2
%25 = add nsw i32 %24, 1
store i32 %25, i32* %2
br label %4
26: ; preds = %4
%27 = load i32, i32* %1
ret i32 %27
}

LLVM IR (-O2):
@.str = [12 x i8] c"%dx%d=%d \00"
define i32 @main() {
br label %1
1: ; preds = %0, %1
%2 = phi i32 [ 1, %0 ], [ %21, %1 ]
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 1, i32 %2)
%4 = shl nuw nsw i32 %2, 1
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 2, i32 %4)
%6 = mul nuw nsw i32 %2, 3
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 3, i32 %6)
%8 = shl nuw nsw i32 %2, 2
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 4, i32 %8)
%10 = mul nuw nsw i32 %2, 5
%11 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 5, i32 %10)
%12 = mul nuw nsw i32 %2, 6
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 6, i32 %12)
%14 = mul nuw nsw i32 %2, 7
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 7, i32 %14)
%16 = shl nuw nsw i32 %2, 3
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 8, i32 %16)
%18 = mul nuw nsw i32 %2, 9
%19 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32 %2, i32 9, i32 %18)
%20 = tail call i32 @putchar(i32 10)
%21 = add nuw nsw i32 %2, 1
%22 = icmp eq i32 %21, 10
br i1 %22, label %23, label %1
23: ; preds = %1
ret i32 0
}