#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__ char_to_int(char);
unsigned int strlen(char *);
int tally(char *expanded) {
  int result = 0;
  unsigned int i;
  for (i = 0; i < strlen(expanded); i++) {
    result += char_to_int(expanded[i]);
  }
  return result;
}


x86 assembly (clang, -O0):
<tally>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
mov    %eax,-0x14(%rbp)
mov    -0x8(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,%ecx
mov    -0x14(%rbp),%eax
cmp    %ecx,%eax
jae    1181 <tally+0x61>
mov    -0x8(%rbp),%rax
mov    -0x10(%rbp),%ecx
movsbl (%rax,%rcx,1),%edi
call   1040 <char_to_int@plt>
mov    %rax,%rcx
movslq -0xc(%rbp),%rax
add    %rcx,%rax
mov    %eax,-0xc(%rbp)
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    113a <tally+0x1a>
mov    -0xc(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<tally>:
push   %rbp
push   %r14
push   %rbx
mov    %rdi,%r14
call   1030 <strlen@plt>
test   %eax,%eax
je     1161 <tally+0x41>
xor    %ebx,%ebx
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
xchg   %ax,%ax
movsbl (%r14,%rbx,1),%edi
call   1040 <char_to_int@plt>
add    %eax,%ebp
add    $0x1,%rbx
mov    %r14,%rdi
call   1030 <strlen@plt>
mov    %eax,%eax
cmp    %rax,%rbx
jb     1140 <tally+0x20>
jmp    1163 <tally+0x43>
xor    %ebp,%ebp
mov    %ebp,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
define i32 @tally(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
%4 = alloca i32
store i8* %0, i8** %2
store i32 0, i32* %3
store i32 0, i32* %4
br label %5
5: ; preds = %21, %1
%6 = load i32, i32* %4
%7 = load i8*, i8** %2
%8 = call i32 @strlen(i8* %7)
%9 = icmp ult i32 %6, %8
br i1 %9, label %10, label %24
10: ; preds = %5
%11 = load i8*, i8** %2
%12 = load i32, i32* %4
%13 = zext i32 %12 to i64
%14 = getelementptr inbounds i8, i8* %11, i64 %13
%15 = load i8, i8* %14
%16 = call i64 @char_to_int(i8 signext %15)
%17 = load i32, i32* %3
%18 = sext i32 %17 to i64
%19 = add nsw i64 %18, %16
%20 = trunc i64 %19 to i32
store i32 %20, i32* %3
br label %21
21: ; preds = %10
%22 = load i32, i32* %4
%23 = add i32 %22, 1
store i32 %23, i32* %4
br label %5
24: ; preds = %5
%25 = load i32, i32* %3
ret i32 %25
}

LLVM IR (-O2):
define i32 @tally(i8* %0) {
%2 = tail call i32 @strlen(i8* %0)
%3 = icmp eq i32 %2, 0
br i1 %3, label %16, label %4
4: ; preds = %1, %4
%5 = phi i64 [ %12, %4 ], [ 0, %1 ]
%6 = phi i32 [ %11, %4 ], [ 0, %1 ]
%7 = getelementptr inbounds i8, i8* %0, i64 %5
%8 = load i8, i8* %7
%9 = tail call i64 @char_to_int(i8 signext %8)
%10 = trunc i64 %9 to i32
%11 = add i32 %6, %10
%12 = add nuw nsw i64 %5, 1
%13 = tail call i32 @strlen(i8* %0)
%14 = zext i32 %13 to i64
%15 = icmp ult i64 %12, %14
br i1 %15, label %4, label %16
16: ; preds = %4, %1
%17 = phi i32 [ 0, %1 ], [ %11, %4 ]
ret i32 %17
}