#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*/ symbol_match(char, char);
int pattern_match(char *string, char *pattern, int n) {
  int i = 0;
  while (i < n) {
    if (!symbol_match(string[i], pattern[i]))
      return 0;
    i++;
  }
  return 1;
}


x86 assembly (clang, -O0):
<pattern_match>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    %edx,-0x1c(%rbp)
movl   $0x0,-0x20(%rbp)
mov    -0x20(%rbp),%eax
cmp    -0x1c(%rbp),%eax
jge    1178 <pattern_match+0x68>
mov    -0x10(%rbp),%rax
movslq -0x20(%rbp),%rcx
mov    (%rax,%rcx,1),%dl
mov    -0x18(%rbp),%rax
movslq -0x20(%rbp),%rcx
movsbl %dl,%edi
movsbl (%rax,%rcx,1),%esi
call   1030 <symbol_match@plt>
cmp    $0x0,%eax
jne    116a <pattern_match+0x5a>
movl   $0x0,-0x4(%rbp)
jmp    117f <pattern_match+0x6f>
mov    -0x20(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x20(%rbp)
jmp    112a <pattern_match+0x1a>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<pattern_match>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
mov    $0x1,%r14d
test   %edx,%edx
jle    1151 <pattern_match+0x41>
mov    %rsi,%r15
mov    %rdi,%r12
mov    %edx,%ebx
xor    %ebp,%ebp
nopl   0x0(%rax)
movsbl (%r12,%rbp,1),%edi
movsbl (%r15,%rbp,1),%esi
call   1030 <symbol_match@plt>
test   %eax,%eax
je     114e <pattern_match+0x3e>
add    $0x1,%rbp
cmp    %rbp,%rbx
jne    1130 <pattern_match+0x20>
jmp    1151 <pattern_match+0x41>
xor    %r14d,%r14d
mov    %r14d,%eax
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
define i32 @pattern_match(i8* %0, i8* %1, i32 %2) {
%4 = alloca i32
%5 = alloca i8*
%6 = alloca i8*
%7 = alloca i32
%8 = alloca i32
store i8* %0, i8** %5
store i8* %1, i8** %6
store i32 %2, i32* %7
store i32 0, i32* %8
br label %9
9: ; preds = %27, %3
%10 = load i32, i32* %8
%11 = load i32, i32* %7
%12 = icmp slt i32 %10, %11
br i1 %12, label %13, label %30
13: ; preds = %9
%14 = load i8*, i8** %5
%15 = load i32, i32* %8
%16 = sext i32 %15 to i64
%17 = getelementptr inbounds i8, i8* %14, i64 %16
%18 = load i8, i8* %17
%19 = load i8*, i8** %6
%20 = load i32, i32* %8
%21 = sext i32 %20 to i64
%22 = getelementptr inbounds i8, i8* %19, i64 %21
%23 = load i8, i8* %22
%24 = call i32 @symbol_match(i8 signext %18, i8 signext %23)
%25 = icmp ne i32 %24, 0
br i1 %25, label %27, label %26
26: ; preds = %13
store i32 0, i32* %4
br label %31
27: ; preds = %13
%28 = load i32, i32* %8
%29 = add nsw i32 %28, 1
store i32 %29, i32* %8
br label %9
30: ; preds = %9
store i32 1, i32* %4
br label %31
31: ; preds = %30, %26
%32 = load i32, i32* %4
ret i32 %32
}

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