#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_FAILURE;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ stderr;
long strtol(char const *, char **, int /*<<< orphan*/);
int parse_alignment(const char *arg) {
  long int value;
  char *endptr;
  value = strtol(arg, &endptr, 0);
  if (*endptr) {
    fprintf(stderr, "Error: garbage after alignment value: %s\n", endptr);
    exit(EXIT_FAILURE);
  }
  return value;
}


x86 assembly (clang, -O0):
<parse_alignment>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    -0x18(%rbp),%rsi
xor    %edx,%edx
call   1040 <strtol@plt>
mov    %rax,-0x10(%rbp)
mov    -0x18(%rbp),%rax
cmpb   $0x0,(%rax)
je     1183 <parse_alignment+0x53>
mov    0x2e7d(%rip),%rax
mov    (%rax),%edi
mov    -0x18(%rbp),%rdx
lea    0xe90(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e5c(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>
mov    -0x10(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<parse_alignment>:
push   %rax
mov    %rsp,%rsi
xor    %edx,%edx
call   1040 <strtol@plt>
mov    (%rsp),%rdx
cmpb   $0x0,(%rdx)
jne    1146 <parse_alignment+0x16>
pop    %rcx
ret
mov    0x2e93(%rip),%rax
mov    (%rax),%edi
lea    0xeaa(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e76(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [42 x i8] c"Error: garbage after alignment value: %s\0A\00"
@EXIT_FAILURE = global i32 0
define i32 @parse_alignment(i8* %0) {
%2 = alloca i8*
%3 = alloca i64
%4 = alloca i8*
store i8* %0, i8** %2
%5 = load i8*, i8** %2
%6 = call i64 @strtol(i8* %5, i8** %4, i32 0)
store i64 %6, i64* %3
%7 = load i8*, i8** %4
%8 = load i8, i8* %7
%9 = icmp ne i8 %8, 0
br i1 %9, label %10, label %16
10: ; preds = %1
%11 = load i32, i32* @stderr
%12 = load i8*, i8** %4
%13 = call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str, i64 0, i64 0), i8* %12)
%14 = load i32, i32* @EXIT_FAILURE
%15 = call i32 @exit(i32 %14)
unreachable
16: ; preds = %1
%17 = load i64, i64* %3
%18 = trunc i64 %17 to i32
ret i32 %18
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [42 x i8] c"Error: garbage after alignment value: %s\0A\00"
@EXIT_FAILURE = global i32 0
define i32 @parse_alignment(i8* %0) {
%2 = alloca i8*
%3 = bitcast i8** %2 to i8*
%4 = call i64 @strtol(i8* %0, i8** %2, i32 0)
%5 = load i8*, i8** %2
%6 = load i8, i8* %5
%7 = icmp eq i8 %6, 0
br i1 %7, label %13, label %8
8: ; preds = %1
%9 = load i32, i32* @stderr
%10 = tail call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([42 x i8], [42 x i8]* @.str, i64 0, i64 0), i8* %5)
%11 = load i32, i32* @EXIT_FAILURE
%12 = tail call i32 @exit(i32 %11)
unreachable
13: ; preds = %1
%14 = trunc i64 %4 to i32
ret i32 %14
}