#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*/ *wctrans_t;

/* Variables and functions */
scalar_t__ strcmp(char const *, char *);
int /*<<< orphan*/ *towlower;
int /*<<< orphan*/ *towupper;
wctrans_t wctrans(const char *charclass) {
  if (strcmp(charclass, "tolower") == 0)
    return towlower;
  if (strcmp(charclass, "toupper") == 0)
    return towupper;
  return NULL;
}


x86 assembly (clang, -O0):
<wctrans>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
mov    -0x10(%rbp),%rdi
lea    0xed9(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1149 <wctrans+0x39>
mov    0x2e9b(%rip),%rax
mov    (%rax),%rax
mov    %rax,-0x8(%rbp)
jmp    117e <wctrans+0x6e>
mov    -0x10(%rbp),%rdi
lea    0xeb4(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1176 <wctrans+0x66>
mov    0x2e7e(%rip),%rax
mov    (%rax),%rax
mov    %rax,-0x8(%rbp)
jmp    117e <wctrans+0x6e>
movq   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<wctrans>:
push   %rbx
mov    %rdi,%rbx
lea    0xee5(%rip),%rsi
call   1030 <strcmp@plt>
test   %rax,%rax
je     1142 <wctrans+0x32>
lea    0xedc(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
jne    114e <wctrans+0x3e>
mov    0x2ea8(%rip),%rax
jmp    1149 <wctrans+0x39>
mov    0x2e8f(%rip),%rax
mov    (%rax),%rax
pop    %rbx
ret
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [8 x i8] c"tolower\00"
@towlower = global i32* null
@.str.1 = [8 x i8] c"toupper\00"
@towupper = global i32* null
define i32* @wctrans(i8* %0) {
%2 = alloca i32*
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = call i64 @strcmp(i8* %4, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %9
7: ; preds = %1
%8 = load i32*, i32** @towlower
store i32* %8, i32** %2
br label %16
9: ; preds = %1
%10 = load i8*, i8** %3
%11 = call i64 @strcmp(i8* %10, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0))
%12 = icmp eq i64 %11, 0
br i1 %12, label %13, label %15
13: ; preds = %9
%14 = load i32*, i32** @towupper
store i32* %14, i32** %2
br label %16
15: ; preds = %9
store i32* null, i32** %2
br label %16
16: ; preds = %15, %13, %7
%17 = load i32*, i32** %2
ret i32* %17
}

LLVM IR (-O2):
@.str = [8 x i8] c"tolower\00"
@towlower = global i32* null
@.str.1 = [8 x i8] c"toupper\00"
@towupper = global i32* null
define i32* @wctrans(i8* %0) {
%2 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i64 %2, 0
br i1 %3, label %4, label %6
4: ; preds = %1
%5 = load i32*, i32** @towlower
br label %11
6: ; preds = %1
%7 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0))
%8 = icmp eq i64 %7, 0
%9 = load i32*, i32** @towupper
%10 = select i1 %8, i32* %9, i32* null
br label %11
11: ; preds = %6, %4
%12 = phi i32* [ %5, %4 ], [ %10, %6 ]
ret i32* %12
}