#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[], char *env[]) {
  int i;
  printf("argc = %d\n", argc);
  for (i = 0; i < argc; i++)
    printf("argv[%d] = %s\n", i, argv[i]);
  i = 0;
  for (i = 0; env[i] != NULL; i++)
    printf("env[%d] = %s\n", i, env[i]);
}


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)
mov    -0x8(%rbp),%esi
lea    0xecc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x1c(%rbp)
mov    -0x1c(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    1179 <main+0x69>
mov    -0x1c(%rbp),%esi
mov    -0x10(%rbp),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xea7(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    1142 <main+0x32>
movl   $0x0,-0x1c(%rbp)
movl   $0x0,-0x1c(%rbp)
mov    -0x18(%rbp),%rax
movslq -0x1c(%rbp),%rcx
cmpq   $0x0,(%rax,%rcx,8)
je     11c5 <main+0xb5>
mov    -0x1c(%rbp),%esi
mov    -0x18(%rbp),%rax
movslq -0x1c(%rbp),%rcx
mov    (%rax,%rcx,8),%rdx
lea    0xe6a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x1c(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x1c(%rbp)
jmp    1187 <main+0x77>
mov    -0x4(%rbp),%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    0xed8(%rip),%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1030 <printf@plt>
test   %ebx,%ebx
jle    1169 <main+0x59>
mov    %ebx,%r13d
lea    0xecc(%rip),%r15
xor    %ebx,%ebx
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    (%r12,%rbx,8),%rdx
mov    %r15,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1030 <printf@plt>
add    $0x1,%rbx
cmp    %rbx,%r13
jne    1150 <main+0x40>
mov    (%r14),%rdx
test   %rdx,%rdx
je     119a <main+0x8a>
lea    0xea2(%rip),%r15
xor    %ebx,%ebx
nopw   0x0(%rax,%rax,1)
mov    %r15,%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1030 <printf@plt>
mov    0x8(%r14,%rbx,8),%rdx
add    $0x1,%rbx
test   %rdx,%rdx
jne    1180 <main+0x70>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [11 x i8] c"argc = %d\0A\00"
@.str.1 = [15 x i8] c"argv[%d] = %s\0A\00"
@.str.2 = [14 x i8] c"env[%d] = %s\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 = load i32, i32* %5
%10 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i64 0, i64 0), i32 %9)
store i32 0, i32* %8
br label %11
11: ; preds = %23, %3
%12 = load i32, i32* %8
%13 = load i32, i32* %5
%14 = icmp slt i32 %12, %13
br i1 %14, label %15, label %26
15: ; preds = %11
%16 = load i32, i32* %8
%17 = load i8**, i8*** %6
%18 = load i32, i32* %8
%19 = sext i32 %18 to i64
%20 = getelementptr inbounds i8*, i8** %17, i64 %19
%21 = load i8*, i8** %20
%22 = call i32 (i8*, i32, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), i32 %16, i8* %21)
br label %23
23: ; preds = %15
%24 = load i32, i32* %8
%25 = add nsw i32 %24, 1
store i32 %25, i32* %8
br label %11
26: ; preds = %11
store i32 0, i32* %8
store i32 0, i32* %8
br label %27
27: ; preds = %42, %26
%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*, i32, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.2, 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
%46 = load i32, i32* %4
ret i32 %46
}

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