#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 EXIT_FAILURE;
int EXIT_SUCCESS;
size_t atoi(char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *);
int /*<<< orphan*/ invert_digits(size_t);
int /*<<< orphan*/ stderr;
int /*<<< orphan*/ stdout;
int main(int argc, char *argv[]) {
  size_t number;
  if (argc != 2) {
    fprintf(stderr, "invert_digits number\n");
    return EXIT_FAILURE;
  }
  number = atoi(argv[1]);
  invert_digits(number);
  fprintf(stdout, "\n");
  return EXIT_SUCCESS;
}


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)
cmpl   $0x2,-0x8(%rbp)
je     1176 <main+0x46>
mov    0x2e89(%rip),%rax
mov    (%rax),%edi
lea    0xea0(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e6c(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
jmp    11b1 <main+0x81>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <atoi@plt>
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
call   1040 <invert_digits@plt>
mov    0x2e39(%rip),%rax
mov    (%rax),%edi
lea    0xe74(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e1c(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x2,%edi
jne    115e <main+0x2e>
mov    0x8(%rsi),%rdi
call   1050 <atoi@plt>
mov    %rax,%rdi
call   1040 <invert_digits@plt>
mov    0x2e7a(%rip),%rbx
lea    0xebf(%rip),%rsi
mov    0x2e74(%rip),%rax
jmp    1173 <main+0x43>
mov    0x2e73(%rip),%rbx
lea    0xe94(%rip),%rsi
mov    0x2e6d(%rip),%rax
mov    (%rax),%edi
call   1030 <fprintf@plt>
mov    (%rbx),%eax
pop    %rbx
ret

LLVM IR (-O0):
@stderr = global i32 0
@.str = [22 x i8] c"invert_digits number\0A\00"
@EXIT_FAILURE = global i32 0
@stdout = global i32 0
@.str.1 = [2 x i8] c"\0A\00"
@EXIT_SUCCESS = global i32 0
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i64
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i32, i32* %4
%8 = icmp ne i32 %7, 2
br i1 %8, label %9, label %13
9: ; preds = %2
%10 = load i32, i32* @stderr
%11 = call i32 @fprintf(i32 %10, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0))
%12 = load i32, i32* @EXIT_FAILURE
store i32 %12, i32* %3
br label %23
13: ; preds = %2
%14 = load i8**, i8*** %5
%15 = getelementptr inbounds i8*, i8** %14, i64 1
%16 = load i8*, i8** %15
%17 = call i64 @atoi(i8* %16)
store i64 %17, i64* %6
%18 = load i64, i64* %6
%19 = call i32 @invert_digits(i64 %18)
%20 = load i32, i32* @stdout
%21 = call i32 @fprintf(i32 %20, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%22 = load i32, i32* @EXIT_SUCCESS
store i32 %22, i32* %3
br label %23
23: ; preds = %13, %9
%24 = load i32, i32* %3
ret i32 %24
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [22 x i8] c"invert_digits number\0A\00"
@EXIT_FAILURE = global i32 0
@stdout = global i32 0
@.str.1 = [2 x i8] c"\0A\00"
@EXIT_SUCCESS = global i32 0
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 2
br i1 %3, label %4, label %9
4: ; preds = %2
%5 = getelementptr inbounds i8*, i8** %1, i64 1
%6 = load i8*, i8** %5
%7 = tail call i64 @atoi(i8* %6)
%8 = tail call i32 @invert_digits(i64 %7)
br label %9
9: ; preds = %2, %4
%10 = phi i32* [ @stdout, %4 ], [ @stderr, %2 ]
%11 = phi i8* [ getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0), %4 ], [ getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), %2 ]
%12 = phi i32* [ @EXIT_SUCCESS, %4 ], [ @EXIT_FAILURE, %2 ]
%13 = load i32, i32* %10
%14 = tail call i32 @fprintf(i32 %13, i8* %11)
%15 = load i32, i32* %12
ret i32 %15
}