#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 *, char *);
int /*<<< orphan*/ squeeze(char *, char *);
int main(int argc, char *argv[]) {
  if (argc < 3) {
    printf("Usage: %s string1 string2\n", argv[0]);
    return -1;
  }
  squeeze(argv[1], argv[2]);
  printf("%s\n", argv[1]);
  return 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)
jge    115f <main+0x3f>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xeb2(%rip),%rdi
call   1040 <printf@plt>
movl   $0xffffffff,-0x4(%rbp)
jmp    118f <main+0x6f>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rsi
call   1030 <squeeze@plt>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rsi
lea    0xe98(%rip),%rdi
call   1040 <printf@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
cmp    $0x3,%edi
jge    1137 <main+0x17>
mov    $0xffffffff,%ebx
lea    0xecb(%rip),%rdi
jmp    1154 <main+0x34>
lea    0x8(%rsi),%r14
mov    0x8(%rsi),%rdi
mov    0x10(%rsi),%rsi
call   1030 <squeeze@plt>
xor    %ebx,%ebx
lea    0xeca(%rip),%rdi
mov    %r14,%rsi
mov    (%rsi),%rsi
call   1040 <printf@plt>
mov    %ebx,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [27 x i8] c"Usage: %s string1 string2\0A\00"
@.str.1 = [4 x i8] c"%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 slt i32 %6, 3
br i1 %7, label %8, label %13
8: ; preds = %2
%9 = load i8**, i8*** %5
%10 = getelementptr inbounds i8*, i8** %9, i64 0
%11 = load i8*, i8** %10
%12 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0), i8* %11)
store i32 -1, i32* %3
br label %25
13: ; preds = %2
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = load i8**, i8*** %5
%18 = getelementptr inbounds i8*, i8** %17, i64 2
%19 = load i8*, i8** %18
%20 = call i32 @squeeze(i8* %16, i8* %19)
%21 = load i8**, i8*** %5
%22 = getelementptr inbounds i8*, i8** %21, i64 1
%23 = load i8*, i8** %22
%24 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i8* %23)
store i32 0, i32* %3
br label %25
25: ; preds = %13, %8
%26 = load i32, i32* %3
ret i32 %26
}

LLVM IR (-O2):
@.str = [27 x i8] c"Usage: %s string1 string2\0A\00"
@.str.1 = [4 x i8] c"%s\0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp slt i32 %0, 3
br i1 %3, label %10, label %4
4: ; preds = %2
%5 = getelementptr inbounds i8*, i8** %1, i64 1
%6 = load i8*, i8** %5
%7 = getelementptr inbounds i8*, i8** %1, i64 2
%8 = load i8*, i8** %7
%9 = tail call i32 @squeeze(i8* %6, i8* %8)
br label %10
10: ; preds = %2, %4
%11 = phi i8** [ %5, %4 ], [ %1, %2 ]
%12 = phi i8* [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), %4 ], [ getelementptr inbounds ([27 x i8], [27 x i8]* @.str, i64 0, i64 0), %2 ]
%13 = phi i32 [ 0, %4 ], [ -1, %2 ]
%14 = load i8*, i8** %11
%15 = tail call i32 @printf(i8* %12, i8* %14)
ret i32 %13
}