#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 __BNF_trans_string(char *);
int examine_verb(void) {
  int state;
  do {
    state = __BNF_trans_string("describe");
    if (!state)
      break;
    state = __BNF_trans_string("look");
    if (!state)
      break;
    state = __BNF_trans_string("examine");
    if (!state)
      break;
    state = __BNF_trans_string("touch");
  } while (0);
  return state;
}


x86 assembly (clang, -O0):
<examine_verb>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xee1(%rip),%rdi
call   1030 <__BNF_trans_string@plt>
mov    %eax,-0x4(%rbp)
cmpl   $0x0,-0x4(%rbp)
jne    1136 <examine_verb+0x26>
jmp    1181 <examine_verb+0x71>
lea    0xecc(%rip),%rdi
call   1030 <__BNF_trans_string@plt>
mov    %eax,-0x4(%rbp)
cmpl   $0x0,-0x4(%rbp)
jne    1154 <examine_verb+0x44>
jmp    1181 <examine_verb+0x71>
lea    0xeb3(%rip),%rdi
call   1030 <__BNF_trans_string@plt>
mov    %eax,-0x4(%rbp)
cmpl   $0x0,-0x4(%rbp)
jne    1172 <examine_verb+0x62>
jmp    1181 <examine_verb+0x71>
lea    0xe9d(%rip),%rdi
call   1030 <__BNF_trans_string@plt>
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<examine_verb>:
push   %rax
lea    0xee8(%rip),%rdi
call   1030 <__BNF_trans_string@plt>
test   %eax,%eax
je     114e <examine_verb+0x3e>
lea    0xee1(%rip),%rdi
call   1030 <__BNF_trans_string@plt>
test   %eax,%eax
je     114e <examine_verb+0x3e>
lea    0xed6(%rip),%rdi
call   1030 <__BNF_trans_string@plt>
test   %eax,%eax
je     114e <examine_verb+0x3e>
lea    0xece(%rip),%rdi
pop    %rax
jmp    1030 <__BNF_trans_string@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [9 x i8] c"describe\00"
@.str.1 = [5 x i8] c"look\00"
@.str.2 = [8 x i8] c"examine\00"
@.str.3 = [6 x i8] c"touch\00"
define i32 @examine_verb() {
%1 = alloca i32
br label %2
2: ; preds = %0
%3 = call i32 @__BNF_trans_string(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
store i32 %3, i32* %1
%4 = load i32, i32* %1
%5 = icmp ne i32 %4, 0
br i1 %5, label %7, label %6
6: ; preds = %2
br label %19
7: ; preds = %2
%8 = call i32 @__BNF_trans_string(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
store i32 %8, i32* %1
%9 = load i32, i32* %1
%10 = icmp ne i32 %9, 0
br i1 %10, label %12, label %11
11: ; preds = %7
br label %19
12: ; preds = %7
%13 = call i32 @__BNF_trans_string(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
store i32 %13, i32* %1
%14 = load i32, i32* %1
%15 = icmp ne i32 %14, 0
br i1 %15, label %17, label %16
16: ; preds = %12
br label %19
17: ; preds = %12
%18 = call i32 @__BNF_trans_string(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
store i32 %18, i32* %1
br label %19
19: ; preds = %17, %16, %11, %6
%20 = load i32, i32* %1
ret i32 %20
}

LLVM IR (-O2):
@.str = [9 x i8] c"describe\00"
@.str.1 = [5 x i8] c"look\00"
@.str.2 = [8 x i8] c"examine\00"
@.str.3 = [6 x i8] c"touch\00"
define i32 @examine_verb() {
%1 = tail call i32 @__BNF_trans_string(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%2 = icmp eq i32 %1, 0
br i1 %2, label %11, label %3
3: ; preds = %0
%4 = tail call i32 @__BNF_trans_string(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%5 = icmp eq i32 %4, 0
br i1 %5, label %11, label %6
6: ; preds = %3
%7 = tail call i32 @__BNF_trans_string(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
%8 = icmp eq i32 %7, 0
br i1 %8, label %11, label %9
9: ; preds = %6
%10 = tail call i32 @__BNF_trans_string(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
br label %11
11: ; preds = %6, %3, %0, %9
%12 = phi i32 [ %10, %9 ], [ 0, %6 ], [ 0, %3 ], [ 0, %0 ]
ret i32 %12
}