#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 main(int argc, char **argv, char **env) {
  printf("Argument array:\n");
  int x;
  for (x = 0; x < argc; x++)
    printf("    %d: %s\n", x, argv[x]);
  printf("Environment:\n");
  for (x = 0; env[x]; x++)
    printf("    %d: %s\n", x, env[x]);
  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    %rdx,-0x18(%rbp)
lea    0xecf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x1c(%rbp)
mov    -0x1c(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1176 <main+0x66>
mov    -0x1c(%rbp),%esi
mov    -0x10(%rbp),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xeb0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    113f <main+0x2f>
lea    0xea0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x1c(%rbp)
mov    -0x18(%rbp),%rax
movslq -0x1c(%rbp),%rcx
cmpq   $0x0,(%rax,%rcx,8)
je     11c9 <main+0xb9>
mov    -0x1c(%rbp),%esi
mov    -0x18(%rbp),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xe5d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    118b <main+0x7b>
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    %rdx,%r14
mov    %rsi,%r12
mov    %edi,%ebx
lea    0xed4(%rip),%rdi
call   1030 <puts@plt>
test   %ebx,%ebx
jle    1169 <main+0x49>
mov    %ebx,%r13d
lea    0xeb5(%rip),%r15
xor    %ebx,%ebx
nopl   (%rax)
mov    (%r12,%rbx,8),%rdx
mov    %r15,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r13
jne    1150 <main+0x30>
lea    0xeac(%rip),%rdi
call   1030 <puts@plt>
mov    (%r14),%rdx
test   %rdx,%rdx
je     11aa <main+0x8a>
lea    0xe7c(%rip),%r15
xor    %ebx,%ebx
cs nopw 0x0(%rax,%rax,1)
mov    %r15,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x8(%r14,%rbx,8),%rdx
add    $0x1,%rbx
test   %rdx,%rdx
jne    1190 <main+0x70>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [17 x i8] c"Argument array:\0A\00"
@.str.1 = [12 x i8] c" %d: %s\0A\00"
@.str.2 = [14 x i8] c"Environment:\0A\00"
define i32 @main(i32 %0, i8** %1, i8** %2) {
%4 = alloca i32
%5 = alloca i32
%6 = alloca i8**
%7 = alloca i8**
%8 = alloca i32
store i32 0, i32* %4
store i32 %0, i32* %5
store i8** %1, i8*** %6
store i8** %2, i8*** %7
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %8
br label %10
10: ; preds = %22, %3
%11 = load i32, i32* %8
%12 = load i32, i32* %5
%13 = icmp slt i32 %11, %12
br i1 %13, label %14, label %25
14: ; preds = %10
%15 = load i32, i32* %8
%16 = load i8**, i8*** %6
%17 = load i32, i32* %8
%18 = sext i32 %17 to i64
%19 = getelementptr inbounds i8*, i8** %16, i64 %18
%20 = load i8*, i8** %19
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 %15, i8* %20)
br label %22
22: ; preds = %14
%23 = load i32, i32* %8
%24 = add nsw i32 %23, 1
store i32 %24, i32* %8
br label %10
25: ; preds = %10
%26 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, i64 0, i64 0))
store i32 0, i32* %8
br label %27
27: ; preds = %42, %25
%28 = load i8**, i8*** %7
%29 = load i32, i32* %8
%30 = sext i32 %29 to i64
%31 = getelementptr inbounds i8*, i8** %28, i64 %30
%32 = load i8*, i8** %31
%33 = icmp ne i8* %32, null
br i1 %33, label %34, label %45
34: ; preds = %27
%35 = load i32, i32* %8
%36 = load i8**, i8*** %7
%37 = load i32, i32* %8
%38 = sext i32 %37 to i64
%39 = getelementptr inbounds i8*, i8** %36, i64 %38
%40 = load i8*, i8** %39
%41 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 %35, i8* %40)
br label %42
42: ; preds = %34
%43 = load i32, i32* %8
%44 = add nsw i32 %43, 1
store i32 %44, i32* %8
br label %27
45: ; preds = %27
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [12 x i8] c" %d: %s\0A\00"
@str = [16 x i8] c"Argument array:\00"
@str.3 = [13 x i8] c"Environment:\00"
define i32 @main(i32 %0, i8** nocapture %1, i8** nocapture %2) {
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @str, i64 0, i64 0))
%5 = icmp sgt i32 %0, 0
br i1 %5, label %6, label %16
6: ; preds = %3
%7 = zext i32 %0 to i64
br label %8
8: ; preds = %6, %8
%9 = phi i64 [ 0, %6 ], [ %14, %8 ]
%10 = getelementptr inbounds i8*, i8** %1, i64 %9
%11 = load i8*, i8** %10
%12 = trunc i64 %9 to i32
%13 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 %12, i8* %11)
%14 = add nuw nsw i64 %9, 1
%15 = icmp eq i64 %14, %7
br i1 %15, label %16, label %8
16: ; preds = %8, %3
%17 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @str.3, i64 0, i64 0))
%18 = load i8*, i8** %2
%19 = icmp eq i8* %18, null
br i1 %19, label %29, label %20
20: ; preds = %16, %20
%21 = phi i64 [ %25, %20 ], [ 0, %16 ]
%22 = phi i8* [ %27, %20 ], [ %18, %16 ]
%23 = trunc i64 %21 to i32
%24 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 %23, i8* %22)
%25 = add nuw i64 %21, 1
%26 = getelementptr inbounds i8*, i8** %2, i64 %25
%27 = load i8*, i8** %26
%28 = icmp eq i8* %27, null
br i1 %28, label %29, label %20
29: ; preds = %20, %16
ret i32 0
}