#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*/ expand(char *, char *);
int /*<<< orphan*/ printf(char *, ...);
int main(int argc, char *argv[]) {
  if (argc != 3) {
    printf("usage: expand <from-file> <to-file>\n");
    exit(1);
  }
  printf("expand: from=%s to=%s\n", argv[1], argv[2]);
  expand(argv[1], argv[2]);
  exit(0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     1168 <main+0x38>
lea    0xea9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x1,%edi
call   1050 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rsi
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdx
lea    0xea6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rsi
call   1040 <expand@plt>
xor    %edi,%edi
call   1050 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x3,%edi
jne    1173 <main+0x33>
mov    %rsi,%rbx
mov    0x8(%rsi),%rsi
mov    0x10(%rbx),%rdx
lea    0xea8(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0x8(%rbx),%rdi
mov    0x10(%rbx),%rsi
call   1050 <expand@plt>
xor    %edi,%edi
call   1060 <exit@plt>
lea    0xe9d(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@.str = [37 x i8] c"usage: expand <from-file> <to-file>\0A\00"
@.str.1 = [23 x i8] c"expand: from=%s to=%s\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = icmp ne i32 %6, 3
br i1 %7, label %8, label %11
8: ; preds = %2
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0))
%10 = call i32 @exit(i32 1)
unreachable
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 1
%14 = load i8*, i8** %13
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 2
%17 = load i8*, i8** %16
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i8* %14, i8* %17)
%19 = load i8**, i8*** %5
%20 = getelementptr inbounds i8*, i8** %19, i64 1
%21 = load i8*, i8** %20
%22 = load i8**, i8*** %5
%23 = getelementptr inbounds i8*, i8** %22, i64 2
%24 = load i8*, i8** %23
%25 = call i32 @expand(i8* %21, i8* %24)
%26 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@.str.1 = [23 x i8] c"expand: from=%s to=%s\0A\00"
@str = [36 x i8] c"usage: expand <from-file> <to-file>\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %7, label %4
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @str, i64 0, i64 0))
%6 = tail call i32 @exit(i32 1)
unreachable
7: ; preds = %2
%8 = getelementptr inbounds i8*, i8** %1, i64 1
%9 = load i8*, i8** %8
%10 = getelementptr inbounds i8*, i8** %1, i64 2
%11 = load i8*, i8** %10
%12 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i8* %9, i8* %11)
%13 = load i8*, i8** %8
%14 = load i8*, i8** %10
%15 = tail call i32 @expand(i8* %13, i8* %14)
%16 = tail call i32 @exit(i32 0)
unreachable
}