#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 main(int argc, char *argv[]) {
  int i;
  printf("argc=%d\n", argc);
  for (i = 1; i < argc; i++)
    printf("argv[%i]=%s\n", i, argv[i]);
  return argc == 4 ? 0 : 1;
}


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    -0x8(%rbp),%esi
lea    0xed0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x1,-0x14(%rbp)
mov    -0x14(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1175 <main+0x65>
mov    -0x14(%rbp),%esi
mov    -0x10(%rbp),%rax
movslq -0x14(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xea9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    113e <main+0x2e>
mov    -0x8(%rbp),%edx
mov    $0x1,%eax
xor    %ecx,%ecx
cmp    $0x4,%edx
cmove  %ecx,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
mov    %rsi,%r12
mov    %edi,%r14d
lea    0xedb(%rip),%rdi
mov    %r14d,%esi
xor    %eax,%eax
call   1030 <printf@plt>
cmp    $0x2,%r14d
jl     1169 <main+0x59>
mov    %r14d,%ebx
mov    $0x1,%ebp
lea    0xec5(%rip),%r15
cs nopw 0x0(%rax,%rax,1)
xchg   %ax,%ax
mov    (%r12,%rbp,8),%rdx
mov    %r15,%rdi
mov    %ebp,%esi
xor    %eax,%eax
call   1030 <printf@plt>
add    $0x1,%rbp
cmp    %rbp,%rbx
jne    1150 <main+0x40>
xor    %eax,%eax
cmp    $0x4,%r14d
setne  %al
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [9 x i8] c"argc=%d\0A\00"
@.str.1 = [13 x i8] c"argv[%i]=%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 = load i32, i32* %4
%8 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 %7)
store i32 1, i32* %6
br label %9
9: ; preds = %21, %2
%10 = load i32, i32* %6
%11 = load i32, i32* %4
%12 = icmp slt i32 %10, %11
br i1 %12, label %13, label %24
13: ; preds = %9
%14 = load i32, i32* %6
%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 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0), i32 %14, i8* %19)
br label %21
21: ; preds = %13
%22 = load i32, i32* %6
%23 = add nsw i32 %22, 1
store i32 %23, i32* %6
br label %9
24: ; preds = %9
%25 = load i32, i32* %4
%26 = icmp eq i32 %25, 4
%27 = zext i1 %26 to i64
%28 = select i1 %26, i32 0, i32 1
ret i32 %28
}

LLVM IR (-O2):
@.str = [9 x i8] c"argc=%d\0A\00"
@.str.1 = [13 x i8] c"argv[%i]=%s\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = tail call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i32 %0)
%4 = icmp sgt i32 %0, 1
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 [ 1, %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 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, 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
%16 = icmp ne i32 %0, 4
%17 = zext i1 %16 to i32
ret i32 %17
}