#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 */
scalar_t__ isValid(char);
int bfsize(char *text, int filesize) {
  int i;
  int sz = 0;
  for (i = 0; i < filesize; i++)
    if (isValid(text[i]))
      sz++;
  sz -= sz % 2;
  return sz;
}


x86 assembly (clang, -O0):
<bfsize>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
movl   $0x0,-0x14(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1170 <bfsize+0x60>
mov    -0x8(%rbp),%rax
movslq -0x10(%rbp),%rcx
movsbl (%rax,%rcx,1),%edi
call   1030 <isValid@plt>
cmp    $0x0,%rax
je     115d <bfsize+0x4d>
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1162 <bfsize+0x52>
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    112d <bfsize+0x1d>
mov    -0x14(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
mov    -0x14(%rbp),%eax
sub    %edx,%eax
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<bfsize>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
test   %esi,%esi
jle    1152 <bfsize+0x42>
mov    %rdi,%r14
mov    %esi,%r15d
xor    %ebx,%ebx
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nop
movsbl (%r14,%rbx,1),%edi
call   1030 <isValid@plt>
cmp    $0x1,%rax
sbb    $0xffffffff,%ebp
add    $0x1,%rbx
cmp    %rbx,%r15
jne    1130 <bfsize+0x20>
and    $0x7ffffffe,%ebp
jmp    1154 <bfsize+0x44>
xor    %ebp,%ebp
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
define i32 @bfsize(i8* %0, i32 %1) {
%3 = alloca i8*
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i8* %0, i8** %3
store i32 %1, i32* %4
store i32 0, i32* %6
store i32 0, i32* %5
br label %7
7: ; preds = %23, %2
%8 = load i32, i32* %5
%9 = load i32, i32* %4
%10 = icmp slt i32 %8, %9
br i1 %10, label %11, label %26
11: ; preds = %7
%12 = load i8*, i8** %3
%13 = load i32, i32* %5
%14 = sext i32 %13 to i64
%15 = getelementptr inbounds i8, i8* %12, i64 %14
%16 = load i8, i8* %15
%17 = call i64 @isValid(i8 signext %16)
%18 = icmp ne i64 %17, 0
br i1 %18, label %19, label %22
19: ; preds = %11
%20 = load i32, i32* %6
%21 = add nsw i32 %20, 1
store i32 %21, i32* %6
br label %22
22: ; preds = %19, %11
br label %23
23: ; preds = %22
%24 = load i32, i32* %5
%25 = add nsw i32 %24, 1
store i32 %25, i32* %5
br label %7
26: ; preds = %7
%27 = load i32, i32* %6
%28 = srem i32 %27, 2
%29 = load i32, i32* %6
%30 = sub nsw i32 %29, %28
store i32 %30, i32* %6
%31 = load i32, i32* %6
ret i32 %31
}

LLVM IR (-O2):
define i32 @bfsize(i8* nocapture %0, i32 %1) {
%3 = icmp sgt i32 %1, 0
br i1 %3, label %4, label %19
4: ; preds = %2
%5 = zext i32 %1 to i64
br label %6
6: ; preds = %4, %6
%7 = phi i64 [ 0, %4 ], [ %15, %6 ]
%8 = phi i32 [ 0, %4 ], [ %14, %6 ]
%9 = getelementptr inbounds i8, i8* %0, i64 %7
%10 = load i8, i8* %9
%11 = tail call i64 @isValid(i8 signext %10)
%12 = icmp ne i64 %11, 0
%13 = zext i1 %12 to i32
%14 = add nuw nsw i32 %8, %13
%15 = add nuw nsw i64 %7, 1
%16 = icmp eq i64 %15, %5
br i1 %16, label %17, label %6
17: ; preds = %6
%18 = and i32 %14, 2147483646
br label %19
19: ; preds = %17, %2
%20 = phi i32 [ 0, %2 ], [ %18, %17 ]
ret i32 %20
}