#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 */
typedef int /*<<< orphan*/ s;

/* Variables and functions */
int lengthof(char *);
int /*<<< orphan*/ printf(char *, ...);
int asize_of(char s[]) {
  int i;
  printf("for loop printf(s) = [");
  for (i = 0; s[i] != '\0'; ++i)
    printf("%c", s[i]);
  printf("]\n");
  printf("lengthof string = [%d]\n", lengthof(s));
  printf("sizeof string = [%ld]\n", sizeof(s));
  return sizeof(s);
}


x86 assembly (clang, -O0):
<asize_of>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
lea    0xecd(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0xc(%rbp)
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0x0,%eax
je     117e <asize_of+0x5e>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movsbl (%rax,%rcx,1),%esi
lea    0xeae(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1141 <asize_of+0x21>
lea    0xeaa(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%rdi
call   1040 <lengthof@plt>
mov    %eax,%esi
lea    0xe7c(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe86(%rip),%rdi
mov    $0x8,%esi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x8,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<asize_of>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%r14
lea    0xeb2(%rip),%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    (%r14),%al
test   %al,%al
je     1173 <asize_of+0x33>
lea    0x1(%r14),%rbx
movsbl %al,%edi
call   1030 <putchar@plt>
movzbl (%rbx),%eax
add    $0x1,%rbx
test   %al,%al
jne    1160 <asize_of+0x20>
lea    0xecc(%rip),%rdi
call   1040 <puts@plt>
mov    %r14,%rdi
call   1060 <lengthof@plt>
lea    0xe89(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xe91(%rip),%rdi
mov    $0x8,%esi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0x8,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [23 x i8] c"for loop printf(s) = [\00"
@.str.1 = [3 x i8] c"%c\00"
@.str.2 = [3 x i8] c"]\0A\00"
@.str.3 = [24 x i8] c"lengthof string = [%d]\0A\00"
@.str.4 = [23 x i8] c"sizeof string = [%ld]\0A\00"
define i32 @asize_of(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
store i8* %0, i8** %2
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %3
br label %5
5: ; preds = %21, %1
%6 = load i8*, i8** %2
%7 = load i32, i32* %3
%8 = sext i32 %7 to i64
%9 = getelementptr inbounds i8, i8* %6, i64 %8
%10 = load i8, i8* %9
%11 = sext i8 %10 to i32
%12 = icmp ne i32 %11, 0
br i1 %12, label %13, label %24
13: ; preds = %5
%14 = load i8*, i8** %2
%15 = load i32, i32* %3
%16 = sext i32 %15 to i64
%17 = getelementptr inbounds i8, i8* %14, i64 %16
%18 = load i8, i8* %17
%19 = sext i8 %18 to i32
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %19)
br label %21
21: ; preds = %13
%22 = load i32, i32* %3
%23 = add nsw i32 %22, 1
store i32 %23, i32* %3
br label %5
24: ; preds = %5
%25 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
%26 = load i8*, i8** %2
%27 = call i32 @lengthof(i8* %26)
%28 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32 %27)
%29 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.4, i64 0, i64 0), i64 8)
ret i32 8
}

LLVM IR (-O2):
@.str = [23 x i8] c"for loop printf(s) = [\00"
@.str.3 = [24 x i8] c"lengthof string = [%d]\0A\00"
@.str.4 = [23 x i8] c"sizeof string = [%ld]\0A\00"
@str = [2 x i8] c"]\00"
define i32 @asize_of(i8* %0) {
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%3 = load i8, i8* %0
%4 = icmp eq i8 %3, 0
br i1 %4, label %14, label %5
5: ; preds = %1, %5
%6 = phi i64 [ %10, %5 ], [ 0, %1 ]
%7 = phi i8 [ %12, %5 ], [ %3, %1 ]
%8 = sext i8 %7 to i32
%9 = tail call i32 @putchar(i32 %8)
%10 = add nuw i64 %6, 1
%11 = getelementptr inbounds i8, i8* %0, i64 %10
%12 = load i8, i8* %11
%13 = icmp eq i8 %12, 0
br i1 %13, label %14, label %5
14: ; preds = %5, %1
%15 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([2 x i8], [2 x i8]* @str, i64 0, i64 0))
%16 = tail call i32 @lengthof(i8* %0)
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32 %16)
%18 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.4, i64 0, i64 0), i64 8)
ret i32 8
}