#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*/ assert(char const *);
unsigned int strlen(char const *);
int strings_hash(void *key, int size) {
  const char *s = (const char *)key;
  int sum = 0;
  unsigned int i;
  assert(s);
  for (i = 0; i < strlen(s); i++)
    sum += (int)s[i];
  return sum % size;
}


x86 assembly (clang, -O0):
<strings_hash>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
mov    %esi,-0xc(%rbp)
mov    -0x8(%rbp),%rax
mov    %rax,-0x18(%rbp)
movl   $0x0,-0x1c(%rbp)
mov    -0x18(%rbp),%rdi
call   1040 <assert@plt>
movl   $0x0,-0x20(%rbp)
mov    -0x20(%rbp),%eax
mov    %eax,-0x24(%rbp)
mov    -0x18(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,%ecx
mov    -0x24(%rbp),%eax
cmp    %ecx,%eax
jae    1189 <strings_hash+0x69>
mov    -0x18(%rbp),%rax
mov    -0x20(%rbp),%ecx
movsbl (%rax,%rcx,1),%eax
add    -0x1c(%rbp),%eax
mov    %eax,-0x1c(%rbp)
mov    -0x20(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x20(%rbp)
jmp    114e <strings_hash+0x2e>
mov    -0x1c(%rbp),%eax
cltd
idivl  -0xc(%rbp)
mov    %edx,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<strings_hash>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
mov    %esi,%r14d
mov    %rdi,%r15
call   1040 <assert@plt>
mov    %r15,%rdi
call   1030 <strlen@plt>
test   %eax,%eax
je     116c <strings_hash+0x4c>
xor    %ebx,%ebx
xor    %ebp,%ebp
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
movsbl (%r15,%rbx,1),%eax
add    %eax,%ebp
add    $0x1,%rbx
mov    %r15,%rdi
call   1030 <strlen@plt>
mov    %eax,%eax
cmp    %rax,%rbx
jb     1150 <strings_hash+0x30>
jmp    116e <strings_hash+0x4e>
xor    %ebp,%ebp
mov    %ebp,%eax
cltd
idiv   %r14d
mov    %edx,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

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

LLVM IR (-O2):
define i32 @strings_hash(i8* %0, i32 %1) {
%3 = tail call i32 @assert(i8* %0)
%4 = tail call i32 @strlen(i8* %0)
%5 = icmp eq i32 %4, 0
br i1 %5, label %17, label %6
6: ; preds = %2, %6
%7 = phi i64 [ %13, %6 ], [ 0, %2 ]
%8 = phi i32 [ %12, %6 ], [ 0, %2 ]
%9 = getelementptr inbounds i8, i8* %0, i64 %7
%10 = load i8, i8* %9
%11 = sext i8 %10 to i32
%12 = add nsw i32 %8, %11
%13 = add nuw nsw i64 %7, 1
%14 = tail call i32 @strlen(i8* %0)
%15 = zext i32 %14 to i64
%16 = icmp ult i64 %13, %15
br i1 %16, label %6, label %17
17: ; preds = %6, %2
%18 = phi i32 [ 0, %2 ], [ %12, %6 ]
%19 = srem i32 %18, %1
ret i32 %19
}