#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, int);
int main() {
  int i, j;
  for (i = 0; i < 10; i++) {
    for (j = 0; j < 10; j++)
      printf("%d-%d ", i, j);
  }
  return 42;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
cmpl   $0xa,-0x8(%rbp)
jge    1174 <main+0x64>
movl   $0x0,-0xc(%rbp)
cmpl   $0xa,-0xc(%rbp)
jge    1161 <main+0x51>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xeb2(%rip),%rdi
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1137 <main+0x27>
jmp    1166 <main+0x56>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1126 <main+0x16>
mov    $0x2a,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
xor    %ebx,%ebx
lea    0xee3(%rip),%r14
nopl   (%rax)
mov    %r14,%rdi
mov    %ebx,%esi
xor    %edx,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x1,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x2,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x3,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x4,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x5,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x6,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x7,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x8,%edx
call   1030 <printf@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    $0x9,%edx
call   1030 <printf@plt>
add    $0x1,%ebx
cmp    $0xa,%ebx
jne    1120 <main+0x10>
mov    $0x2a,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [7 x i8] c"%d-%d \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
br label %4
4: ; preds = %19, %0
%5 = load i32, i32* %2
%6 = icmp slt i32 %5, 10
br i1 %6, label %7, label %22
7: ; preds = %4
store i32 0, i32* %3
br label %8
8: ; preds = %15, %7
%9 = load i32, i32* %3
%10 = icmp slt i32 %9, 10
br i1 %10, label %11, label %18
11: ; preds = %8
%12 = load i32, i32* %2
%13 = load i32, i32* %3
%14 = call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %12, i32 %13)
br label %15
15: ; preds = %11
%16 = load i32, i32* %3
%17 = add nsw i32 %16, 1
store i32 %17, i32* %3
br label %8
18: ; preds = %8
br label %19
19: ; preds = %18
%20 = load i32, i32* %2
%21 = add nsw i32 %20, 1
store i32 %21, i32* %2
br label %4
22: ; preds = %4
ret i32 42
}

LLVM IR (-O2):
@.str = [7 x i8] c"%d-%d \00"
define i32 @main() {
br label %1
1: ; preds = %0, %1
%2 = phi i32 [ 0, %0 ], [ %13, %1 ]
%3 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 0)
%4 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 1)
%5 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 2)
%6 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 3)
%7 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 4)
%8 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 5)
%9 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 6)
%10 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 7)
%11 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 8)
%12 = tail call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0), i32 %2, i32 9)
%13 = add nuw nsw i32 %2, 1
%14 = icmp eq i32 %13, 10
br i1 %14, label %15, label %1
15: ; preds = %1
ret i32 42
}