#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*/ strcmp(char const *, char *);
int is_valid_http_method(const char *method) {
  return !strcmp(method, "GET") || !strcmp(method, "POST") ||
         !strcmp(method, "HEAD") || !strcmp(method, "CONNECT") ||
         !strcmp(method, "PUT") || !strcmp(method, "DELETE");
}


x86 assembly (clang, -O0):
<is_valid_http_method>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xed9(%rip),%rsi
call   1030 <strcmp@plt>
mov    %eax,%ecx
mov    $0x1,%al
cmp    $0x0,%ecx
mov    %al,-0x9(%rbp)
je     11d7 <is_valid_http_method+0xc7>
mov    -0x8(%rbp),%rdi
lea    0xebd(%rip),%rsi
call   1030 <strcmp@plt>
mov    %eax,%ecx
mov    $0x1,%al
cmp    $0x0,%ecx
mov    %al,-0x9(%rbp)
je     11d7 <is_valid_http_method+0xc7>
mov    -0x8(%rbp),%rdi
lea    0xea2(%rip),%rsi
call   1030 <strcmp@plt>
mov    %eax,%ecx
mov    $0x1,%al
cmp    $0x0,%ecx
mov    %al,-0x9(%rbp)
je     11d7 <is_valid_http_method+0xc7>
mov    -0x8(%rbp),%rdi
lea    0xe87(%rip),%rsi
call   1030 <strcmp@plt>
mov    %eax,%ecx
mov    $0x1,%al
cmp    $0x0,%ecx
mov    %al,-0x9(%rbp)
je     11d7 <is_valid_http_method+0xc7>
mov    -0x8(%rbp),%rdi
lea    0xe6f(%rip),%rsi
call   1030 <strcmp@plt>
mov    %eax,%ecx
mov    $0x1,%al
cmp    $0x0,%ecx
mov    %al,-0x9(%rbp)
je     11d7 <is_valid_http_method+0xc7>
mov    -0x8(%rbp),%rdi
lea    0xe53(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%eax
setne  %al
xor    $0xff,%al
mov    %al,-0x9(%rbp)
mov    -0x9(%rbp),%al
and    $0x1,%al
movzbl %al,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<is_valid_http_method>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xee3(%rip),%rsi
call   1030 <strcmp@plt>
mov    $0x1,%ebp
test   %eax,%eax
je     118e <is_valid_http_method+0x7e>
lea    0xed2(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     118e <is_valid_http_method+0x7e>
lea    0xec4(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     118e <is_valid_http_method+0x7e>
lea    0xeb6(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     118e <is_valid_http_method+0x7e>
lea    0xeab(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %eax,%eax
je     118e <is_valid_http_method+0x7e>
lea    0xe9c(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
xor    %ebp,%ebp
test   %eax,%eax
sete   %bpl
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [4 x i8] c"GET\00"
@.str.1 = [5 x i8] c"POST\00"
@.str.2 = [5 x i8] c"HEAD\00"
@.str.3 = [8 x i8] c"CONNECT\00"
@.str.4 = [4 x i8] c"PUT\00"
@.str.5 = [7 x i8] c"DELETE\00"
define i32 @is_valid_http_method(i8* %0) {
%2 = alloca i8*
store i8* %0, i8** %2
%3 = load i8*, i8** %2
%4 = call i32 @strcmp(i8* %3, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0))
%5 = icmp ne i32 %4, 0
br i1 %5, label %6, label %27
6: ; preds = %1
%7 = load i8*, i8** %2
%8 = call i32 @strcmp(i8* %7, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%9 = icmp ne i32 %8, 0
br i1 %9, label %10, label %27
10: ; preds = %6
%11 = load i8*, i8** %2
%12 = call i32 @strcmp(i8* %11, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%13 = icmp ne i32 %12, 0
br i1 %13, label %14, label %27
14: ; preds = %10
%15 = load i8*, i8** %2
%16 = call i32 @strcmp(i8* %15, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
%17 = icmp ne i32 %16, 0
br i1 %17, label %18, label %27
18: ; preds = %14
%19 = load i8*, i8** %2
%20 = call i32 @strcmp(i8* %19, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0))
%21 = icmp ne i32 %20, 0
br i1 %21, label %22, label %27
22: ; preds = %18
%23 = load i8*, i8** %2
%24 = call i32 @strcmp(i8* %23, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.5, i64 0, i64 0))
%25 = icmp ne i32 %24, 0
%26 = xor i1 %25, true
br label %27
27: ; preds = %22, %18, %14, %10, %6, %1
%28 = phi i1 [ true, %18 ], [ true, %14 ], [ true, %10 ], [ true, %6 ], [ true, %1 ], [ %26, %22 ]
%29 = zext i1 %28 to i32
ret i32 %29
}

LLVM IR (-O2):
@.str = [4 x i8] c"GET\00"
@.str.1 = [5 x i8] c"POST\00"
@.str.2 = [5 x i8] c"HEAD\00"
@.str.3 = [8 x i8] c"CONNECT\00"
@.str.4 = [4 x i8] c"PUT\00"
@.str.5 = [7 x i8] c"DELETE\00"
define i32 @is_valid_http_method(i8* nocapture %0) {
%2 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32 %2, 0
br i1 %3, label %20, label %4
4: ; preds = %1
%5 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i32 %5, 0
br i1 %6, label %20, label %7
7: ; preds = %4
%8 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(5) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i32 %8, 0
br i1 %9, label %20, label %10
10: ; preds = %7
%11 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(8) getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp eq i32 %11, 0
br i1 %12, label %20, label %13
13: ; preds = %10
%14 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(4) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0))
%15 = icmp eq i32 %14, 0
br i1 %15, label %20, label %16
16: ; preds = %13
%17 = tail call i32 @strcmp(i8* dereferenceable(1) %0, i8* dereferenceable(7) getelementptr inbounds ([7 x i8], [7 x i8]* @.str.5, i64 0, i64 0))
%18 = icmp eq i32 %17, 0
%19 = zext i1 %18 to i32
br label %20
20: ; preds = %16, %13, %10, %7, %4, %1
%21 = phi i32 [ 1, %13 ], [ 1, %10 ], [ 1, %7 ], [ 1, %4 ], [ 1, %1 ], [ %19, %16 ]
ret i32 %21
}