#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[]) {
  const char *tmp;
  int i;
  printf("argc: %d\n", argc);
  for (i = 0; i <= argc; i++) {
    tmp = argv[i];
    if (tmp == NULL) {
      tmp = "[NULL]";
    }
    printf("argv[%d]: %s\n", i, tmp);
  }
  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)
mov    -0x8(%rbp),%esi
lea    0xed0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x1c(%rbp)
mov    -0x1c(%rbp),%eax
cmp    -0x8(%rbp),%eax
jg     1193 <main+0x83>
mov    -0x10(%rbp),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,8),%rax
mov    %rax,-0x18(%rbp)
cmpq   $0x0,-0x18(%rbp)
jne    1170 <main+0x60>
lea    0xe9e(%rip),%rax
mov    %rax,-0x18(%rbp)
mov    -0x1c(%rbp),%esi
mov    -0x18(%rbp),%rdx
lea    0xe93(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    113e <main+0x2e>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
mov    %rsi,%r14
mov    %edi,%r12d
lea    0xeda(%rip),%rdi
mov    %r12d,%esi
xor    %eax,%eax
call   1030 <printf@plt>
test   %r12d,%r12d
js     1170 <main+0x60>
add    $0x1,%r12d
lea    0xeca(%rip),%r13
lea    0xeca(%rip),%r15
xor    %ebx,%ebx
nopl   0x0(%rax)
mov    (%r14,%rbx,8),%rdx
test   %rdx,%rdx
cmove  %r13,%rdx
mov    %r15,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r12
jne    1150 <main+0x40>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [10 x i8] c"argc: %d\0A\00"
@.str.1 = [7 x i8] c"[NULL]\00"
@.str.2 = [14 x i8] c"argv[%d]: %s\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i8*
%7 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%8 = load i32, i32* %4
%9 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i32 %8)
store i32 0, i32* %7
br label %10
10: ; preds = %27, %2
%11 = load i32, i32* %7
%12 = load i32, i32* %4
%13 = icmp sle i32 %11, %12
br i1 %13, label %14, label %30
14: ; preds = %10
%15 = load i8**, i8*** %5
%16 = load i32, i32* %7
%17 = sext i32 %16 to i64
%18 = getelementptr inbounds i8*, i8** %15, i64 %17
%19 = load i8*, i8** %18
store i8* %19, i8** %6
%20 = load i8*, i8** %6
%21 = icmp eq i8* %20, null
br i1 %21, label %22, label %23
22: ; preds = %14
store i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0), i8** %6
br label %23
23: ; preds = %22, %14
%24 = load i32, i32* %7
%25 = load i8*, i8** %6
%26 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0), i32 %24, i8* %25)
br label %27
27: ; preds = %23
%28 = load i32, i32* %7
%29 = add nsw i32 %28, 1
store i32 %29, i32* %7
br label %10
30: ; preds = %10
ret i32 0
}

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