#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 printv(int mask[], int n) {
  int i;
  printf("{ ");
  for (i = 0; i < n; ++i)
    if (mask[i])
      printf("%d ", i + 1);
  printf("\b }\n");
}


x86 assembly (clang, -O0):
<printv>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
lea    0xeda(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1179 <printv+0x69>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
cmpl   $0x0,(%rax,%rcx,4)
je     1166 <printv+0x56>
mov    -0x10(%rbp),%esi
add    $0x1,%esi
lea    0xea4(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    116b <printv+0x5b>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    1134 <printv+0x24>
lea    0xe87(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<printv>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %esi,%ebp
mov    %rdi,%r15
lea    0xecd(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
test   %ebp,%ebp
jle    1172 <printv+0x52>
mov    %ebp,%ebp
lea    0xebc(%rip),%r14
xor    %esi,%esi
jmp    1158 <printv+0x38>
nopl   0x0(%rax,%rax,1)
mov    %rbx,%rsi
cmp    %rbx,%rbp
je     1172 <printv+0x52>
lea    0x1(%rsi),%rbx
cmpl   $0x0,(%r15,%rsi,4)
je     1150 <printv+0x30>
add    $0x1,%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
jmp    1150 <printv+0x30>
lea    0xe8e(%rip),%rdi
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
jmp    1030 <puts@plt>

LLVM IR (-O0):
@.str = [3 x i8] c"{ \00"
@.str.1 = [4 x i8] c"%d \00"
@.str.2 = [5 x i8] c"\08 }\0A\00"
define void @printv(i32* %0, i32 %1) {
%3 = alloca i32*
%4 = alloca i32
%5 = alloca i32
store i32* %0, i32** %3
store i32 %1, i32* %4
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %5
br label %7
7: ; preds = %23, %2
%8 = load i32, i32* %5
%9 = load i32, i32* %4
%10 = icmp slt i32 %8, %9
br i1 %10, label %11, label %26
11: ; preds = %7
%12 = load i32*, i32** %3
%13 = load i32, i32* %5
%14 = sext i32 %13 to i64
%15 = getelementptr inbounds i32, i32* %12, i64 %14
%16 = load i32, i32* %15
%17 = icmp ne i32 %16, 0
br i1 %17, label %18, label %22
18: ; preds = %11
%19 = load i32, i32* %5
%20 = add nsw i32 %19, 1
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %20)
br label %22
22: ; preds = %18, %11
br label %23
23: ; preds = %22
%24 = load i32, i32* %5
%25 = add nsw i32 %24, 1
store i32 %25, i32* %5
br label %7
26: ; preds = %7
%27 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [3 x i8] c"{ \00"
@.str.1 = [4 x i8] c"%d \00"
@str = [4 x i8] c"\08 }\00"
define void @printv(i32* nocapture %0, i32 %1) {
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%4 = icmp sgt i32 %1, 0
br i1 %4, label %5, label %18
5: ; preds = %2
%6 = zext i32 %1 to i64
br label %7
7: ; preds = %5, %16
%8 = phi i64 [ 0, %5 ], [ %12, %16 ]
%9 = getelementptr inbounds i32, i32* %0, i64 %8
%10 = load i32, i32* %9
%11 = icmp eq i32 %10, 0
%12 = add nuw nsw i64 %8, 1
br i1 %11, label %16, label %13
13: ; preds = %7
%14 = trunc i64 %12 to i32
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %14)
br label %16
16: ; preds = %7, %13
%17 = icmp eq i64 %12, %6
br i1 %17, label %18, label %7
18: ; preds = %16, %2
%19 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @str, i64 0, i64 0))
ret void
}