#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*/ exit(int);
int /*<<< orphan*/ process_file(char *);
int /*<<< orphan*/ usage(char *);
int main(int argc, char *argv[]) {
  if (argc > 1) {
    for (int i = 1; i < argc; i++)
      process_file(argv[i]);
  } else {
    usage(argv[0]);
    exit(2);
  }
  return 0;
}


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)
cmpl   $0x1,-0x8(%rbp)
jle    1187 <main+0x57>
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1182 <main+0x52>
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdi
call   1030 <process_file@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1157 <main+0x27>
jmp    119d <main+0x6d>
mov    -0x10(%rbp),%rax
mov    (%rax),%rdi
call   1040 <usage@plt>
mov    $0x2,%edi
call   1050 <exit@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
mov    %rsi,%r14
cmp    $0x2,%edi
jl     116a <main+0x3a>
mov    %edi,%r15d
mov    $0x1,%ebx
cs nopw 0x0(%rax,%rax,1)
nop
mov    (%r14,%rbx,8),%rdi
call   1030 <process_file@plt>
add    $0x1,%rbx
cmp    %rbx,%r15
jne    1150 <main+0x20>
xor    %eax,%eax
pop    %rbx
pop    %r14
pop    %r15
ret
mov    (%r14),%rdi
call   1040 <usage@plt>
mov    $0x2,%edi
call   1050 <exit@plt>

LLVM IR (-O0):
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 = load i32, i32* %4
%8 = icmp sgt i32 %7, 1
br i1 %8, label %9, label %25
9: ; preds = %2
store i32 1, i32* %6
br label %10
10: ; preds = %21, %9
%11 = load i32, i32* %6
%12 = load i32, i32* %4
%13 = icmp slt i32 %11, %12
br i1 %13, label %14, label %24
14: ; preds = %10
%15 = load i8**, i8*** %5
%16 = load i32, i32* %6
%17 = sext i32 %16 to i64
%18 = getelementptr inbounds i8*, i8** %15, i64 %17
%19 = load i8*, i8** %18
%20 = call i32 @process_file(i8* %19)
br label %21
21: ; preds = %14
%22 = load i32, i32* %6
%23 = add nsw i32 %22, 1
store i32 %23, i32* %6
br label %10
24: ; preds = %10
br label %31
25: ; preds = %2
%26 = load i8**, i8*** %5
%27 = getelementptr inbounds i8*, i8** %26, i64 0
%28 = load i8*, i8** %27
%29 = call i32 @usage(i8* %28)
%30 = call i32 @exit(i32 2)
unreachable
31: ; preds = %24
ret i32 0
}

LLVM IR (-O2):
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp sgt i32 %0, 1
br i1 %3, label %4, label %14
4: ; preds = %2
%5 = zext i32 %0 to i64
br label %7
6: ; preds = %7
ret i32 0
7: ; preds = %4, %7
%8 = phi i64 [ 1, %4 ], [ %12, %7 ]
%9 = getelementptr inbounds i8*, i8** %1, i64 %8
%10 = load i8*, i8** %9
%11 = tail call i32 @process_file(i8* %10)
%12 = add nuw nsw i64 %8, 1
%13 = icmp eq i64 %12, %5
br i1 %13, label %6, label %7
14: ; preds = %2
%15 = load i8*, i8** %1
%16 = tail call i32 @usage(i8* %15)
%17 = tail call i32 @exit(i32 2)
unreachable
}