#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__ strcmp(char const *, char *);
int SLOW_GetOperatorPrecedence(const char *op) {
  if (strcmp(op, "(") == 0)
    return 0;
  else if (strcmp(op, ")") == 0)
    return 1;
  else if (strcmp(op, "+") == 0)
    return 1;
  else if (strcmp(op, "-") == 0)
    return 1;
  else if (strcmp(op, "/") == 0)
    return 2;
  else if (strcmp(op, "*") == 0)
    return 2;
  else if (strcmp(op, "^") == 0)
    return 3;
  return 256;
}


x86 assembly (clang, -O0):
<SLOW_GetOperatorPrecedence>:
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    1142 <SLOW_GetOperatorPrecedence+0x32>
movl   $0x0,-0x4(%rbp)
jmp    124b <SLOW_GetOperatorPrecedence+0x13b>
mov    -0x10(%rbp),%rdi
lea    0xeb5(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1168 <SLOW_GetOperatorPrecedence+0x58>
movl   $0x1,-0x4(%rbp)
jmp    124b <SLOW_GetOperatorPrecedence+0x13b>
mov    -0x10(%rbp),%rdi
lea    0xe91(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    118e <SLOW_GetOperatorPrecedence+0x7e>
movl   $0x1,-0x4(%rbp)
jmp    124b <SLOW_GetOperatorPrecedence+0x13b>
mov    -0x10(%rbp),%rdi
lea    0xe6d(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    11b4 <SLOW_GetOperatorPrecedence+0xa4>
movl   $0x1,-0x4(%rbp)
jmp    124b <SLOW_GetOperatorPrecedence+0x13b>
mov    -0x10(%rbp),%rdi
lea    0xe49(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    11da <SLOW_GetOperatorPrecedence+0xca>
movl   $0x2,-0x4(%rbp)
jmp    124b <SLOW_GetOperatorPrecedence+0x13b>
mov    -0x10(%rbp),%rdi
lea    0xe25(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1200 <SLOW_GetOperatorPrecedence+0xf0>
movl   $0x2,-0x4(%rbp)
jmp    124b <SLOW_GetOperatorPrecedence+0x13b>
mov    -0x10(%rbp),%rdi
lea    0xe01(%rip),%rsi
call   1030 <strcmp@plt>
cmp    $0x0,%rax
jne    1226 <SLOW_GetOperatorPrecedence+0x116>
movl   $0x3,-0x4(%rbp)
jmp    124b <SLOW_GetOperatorPrecedence+0x13b>
jmp    122b <SLOW_GetOperatorPrecedence+0x11b>
jmp    1230 <SLOW_GetOperatorPrecedence+0x120>
jmp    1235 <SLOW_GetOperatorPrecedence+0x125>
jmp    123a <SLOW_GetOperatorPrecedence+0x12a>
jmp    123f <SLOW_GetOperatorPrecedence+0x12f>
jmp    1244 <SLOW_GetOperatorPrecedence+0x134>
movl   $0x100,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<SLOW_GetOperatorPrecedence>:
push   %rbp
push   %rbx
push   %rax
mov    %rdi,%rbx
lea    0xee3(%rip),%rsi
call   1030 <strcmp@plt>
test   %rax,%rax
je     11ba <SLOW_GetOperatorPrecedence+0xaa>
lea    0xed0(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x1,%ebp
test   %rax,%rax
je     11bc <SLOW_GetOperatorPrecedence+0xac>
lea    0xeb9(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     11bc <SLOW_GetOperatorPrecedence+0xac>
lea    0xea7(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     11bc <SLOW_GetOperatorPrecedence+0xac>
lea    0xe95(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
mov    $0x2,%ebp
test   %rax,%rax
je     11bc <SLOW_GetOperatorPrecedence+0xac>
lea    0xe7e(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
je     11bc <SLOW_GetOperatorPrecedence+0xac>
lea    0xe6c(%rip),%rsi
mov    %rbx,%rdi
call   1030 <strcmp@plt>
test   %rax,%rax
mov    $0x3,%eax
mov    $0x100,%ebp
cmove  %eax,%ebp
jmp    11bc <SLOW_GetOperatorPrecedence+0xac>
xor    %ebp,%ebp
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [2 x i8] c"(\00"
@.str.1 = [2 x i8] c")\00"
@.str.2 = [2 x i8] c"+\00"
@.str.3 = [2 x i8] c"-\00"
@.str.4 = [2 x i8] c"/\00"
@.str.5 = [2 x i8] c"*\00"
@.str.6 = [2 x i8] c"^\00"
define i32 @SLOW_GetOperatorPrecedence(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 ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %8
7: ; preds = %1
store i32 0, i32* %2
br label %45
8: ; preds = %1
%9 = load i8*, i8** %3
%10 = call i64 @strcmp(i8* %9, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%11 = icmp eq i64 %10, 0
br i1 %11, label %12, label %13
12: ; preds = %8
store i32 1, i32* %2
br label %45
13: ; preds = %8
%14 = load i8*, i8** %3
%15 = call i64 @strcmp(i8* %14, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%16 = icmp eq i64 %15, 0
br i1 %16, label %17, label %18
17: ; preds = %13
store i32 1, i32* %2
br label %45
18: ; preds = %13
%19 = load i8*, i8** %3
%20 = call i64 @strcmp(i8* %19, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%21 = icmp eq i64 %20, 0
br i1 %21, label %22, label %23
22: ; preds = %18
store i32 1, i32* %2
br label %45
23: ; preds = %18
%24 = load i8*, i8** %3
%25 = call i64 @strcmp(i8* %24, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0))
%26 = icmp eq i64 %25, 0
br i1 %26, label %27, label %28
27: ; preds = %23
store i32 2, i32* %2
br label %45
28: ; preds = %23
%29 = load i8*, i8** %3
%30 = call i64 @strcmp(i8* %29, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.5, i64 0, i64 0))
%31 = icmp eq i64 %30, 0
br i1 %31, label %32, label %33
32: ; preds = %28
store i32 2, i32* %2
br label %45
33: ; preds = %28
%34 = load i8*, i8** %3
%35 = call i64 @strcmp(i8* %34, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.6, i64 0, i64 0))
%36 = icmp eq i64 %35, 0
br i1 %36, label %37, label %38
37: ; preds = %33
store i32 3, i32* %2
br label %45
38: ; preds = %33
br label %39
39: ; preds = %38
br label %40
40: ; preds = %39
br label %41
41: ; preds = %40
br label %42
42: ; preds = %41
br label %43
43: ; preds = %42
br label %44
44: ; preds = %43
store i32 256, i32* %2
br label %45
45: ; preds = %44, %37, %32, %27, %22, %17, %12, %7
%46 = load i32, i32* %2
ret i32 %46
}

LLVM IR (-O2):
@.str = [2 x i8] c"(\00"
@.str.1 = [2 x i8] c")\00"
@.str.2 = [2 x i8] c"+\00"
@.str.3 = [2 x i8] c"-\00"
@.str.4 = [2 x i8] c"/\00"
@.str.5 = [2 x i8] c"*\00"
@.str.6 = [2 x i8] c"^\00"
define i32 @SLOW_GetOperatorPrecedence(i8* %0) {
%2 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i64 %2, 0
br i1 %3, label %23, label %4
4: ; preds = %1
%5 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i64 %5, 0
br i1 %6, label %23, label %7
7: ; preds = %4
%8 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
%9 = icmp eq i64 %8, 0
br i1 %9, label %23, label %10
10: ; preds = %7
%11 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp eq i64 %11, 0
br i1 %12, label %23, label %13
13: ; preds = %10
%14 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0))
%15 = icmp eq i64 %14, 0
br i1 %15, label %23, label %16
16: ; preds = %13
%17 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.5, i64 0, i64 0))
%18 = icmp eq i64 %17, 0
br i1 %18, label %23, label %19
19: ; preds = %16
%20 = tail call i64 @strcmp(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.6, i64 0, i64 0))
%21 = icmp eq i64 %20, 0
%22 = select i1 %21, i32 3, i32 256
br label %23
23: ; preds = %19, %16, %13, %10, %7, %4, %1
%24 = phi i32 [ 0, %1 ], [ 1, %4 ], [ 1, %7 ], [ 1, %10 ], [ 2, %13 ], [ 2, %16 ], [ %22, %19 ]
ret i32 %24
}