#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*/ alarm(int);
int /*<<< orphan*/ hangout_loop();
int /*<<< orphan*/ printf(char *, int, char *);
int /*<<< orphan*/ usleep(int);
int main(int argc, char *argv[]) {
  int i;
  alarm(30);
  for (i = 0; i < argc; ++i) {
    printf("Arg %d is %s\n", i, argv[i]);
  }
  while (1) {
    hangout_loop();
    usleep(20);
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    $0x1e,%edi
call   1040 <alarm@plt>
movl   $0x0,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    119c <main+0x5c>
mov    -0x14(%rbp),%esi
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xe77(%rip),%rdi
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1167 <main+0x27>
jmp    11a1 <main+0x61>
mov    $0x0,%al
call   1050 <hangout_loop@plt>
mov    $0x14,%edi
call   1060 <usleep@plt>
jmp    11a1 <main+0x61>

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
mov    %rsi,%r14
mov    %edi,%ebx
mov    $0x1e,%edi
call   1040 <alarm@plt>
test   %ebx,%ebx
jle    1190 <main+0x50>
mov    %ebx,%r12d
xor    %ebx,%ebx
lea    0xe99(%rip),%r15
nopw   0x0(%rax,%rax,1)
mov    (%r14,%rbx,8),%rdx
mov    %r15,%rdi
mov    %ebx,%esi
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r12
jne    1170 <main+0x30>
nopw   0x0(%rax,%rax,1)
xor    %eax,%eax
call   1050 <hangout_loop@plt>
mov    $0x14,%edi
call   1060 <usleep@plt>
jmp    1190 <main+0x50>

LLVM IR (-O0):
@.str = [14 x i8] c"Arg %d is %s\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = call i32 @alarm(i32 30)
store i32 0, i32* %6
br label %8
8: ; preds = %20, %2
%9 = load i32, i32* %6
%10 = load i32, i32* %4
%11 = icmp slt i32 %9, %10
br i1 %11, label %12, label %23
12: ; preds = %8
%13 = load i32, i32* %6
%14 = load i8**, i8*** %5
%15 = load i32, i32* %6
%16 = sext i32 %15 to i64
%17 = getelementptr inbounds i8*, i8** %14, i64 %16
%18 = load i8*, i8** %17
%19 = call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 %13, i8* %18)
br label %20
20: ; preds = %12
%21 = load i32, i32* %6
%22 = add nsw i32 %21, 1
store i32 %22, i32* %6
br label %8
23: ; preds = %8
br label %24
24: ; preds = %23, %24
%25 = call i32 (...) @hangout_loop()
%26 = call i32 @usleep(i32 20)
br label %24
}

LLVM IR (-O2):
@.str = [14 x i8] c"Arg %d is %s\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = tail call i32 @alarm(i32 30)
%4 = icmp sgt i32 %0, 0
br i1 %4, label %5, label %15
5: ; preds = %2
%6 = zext i32 %0 to i64
br label %7
7: ; preds = %5, %7
%8 = phi i64 [ 0, %5 ], [ %13, %7 ]
%9 = getelementptr inbounds i8*, i8** %1, i64 %8
%10 = load i8*, i8** %9
%11 = trunc i64 %8 to i32
%12 = tail call i32 @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0), i32 %11, i8* %10)
%13 = add nuw nsw i64 %8, 1
%14 = icmp eq i64 %13, %6
br i1 %14, label %15, label %7
15: ; preds = %7, %2
br label %16
16: ; preds = %15, %16
%17 = tail call i32 (...) @hangout_loop()
%18 = tail call i32 @usleep(i32 20)
br label %16
}