#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*/ isBlank(char);
int strlen(char *);
scalar_t__ strncmp(char *, char *, int);
int startsWithWord(char *p, char *w) {
  int wordLen = strlen(w);
  if (strncmp(p, w, wordLen) != 0)
    return 0;
  if (!isBlank(p[wordLen]))
    return 0;
  return 1;
}


x86 assembly (clang, -O0):
<startsWithWord>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
call   1050 <strlen@plt>
mov    %eax,-0x1c(%rbp)
mov    -0x10(%rbp),%rdi
mov    -0x18(%rbp),%rsi
mov    -0x1c(%rbp),%edx
call   1030 <strncmp@plt>
cmp    $0x0,%rax
je     1172 <startsWithWord+0x42>
movl   $0x0,-0x4(%rbp)
jmp    119f <startsWithWord+0x6f>
mov    -0x10(%rbp),%rax
movslq -0x1c(%rbp),%rcx
movsbl (%rax,%rcx,1),%edi
call   1040 <isBlank@plt>
cmp    $0x0,%eax
jne    1198 <startsWithWord+0x68>
movl   $0x0,-0x4(%rbp)
jmp    119f <startsWithWord+0x6f>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<startsWithWord>:
push   %rbp
push   %r14
push   %rbx
mov    %rsi,%rbx
mov    %rdi,%r14
mov    %rsi,%rdi
call   1050 <strlen@plt>
mov    %eax,%ebp
mov    %r14,%rdi
mov    %rbx,%rsi
mov    %eax,%edx
call   1030 <strncmp@plt>
mov    %rax,%rcx
xor    %eax,%eax
test   %rcx,%rcx
jne    1171 <startsWithWord+0x41>
movslq %ebp,%rax
movsbl (%r14,%rax,1),%edi
call   1040 <isBlank@plt>
mov    %eax,%ecx
xor    %eax,%eax
test   %ecx,%ecx
setne  %al
pop    %rbx
pop    %r14
pop    %rbp
ret

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

LLVM IR (-O2):
define i32 @startsWithWord(i8* %0, i8* %1) {
%3 = tail call i32 @strlen(i8* %1)
%4 = tail call i64 @strncmp(i8* %0, i8* %1, i32 %3)
%5 = icmp eq i64 %4, 0
br i1 %5, label %6, label %13
6: ; preds = %2
%7 = sext i32 %3 to i64
%8 = getelementptr inbounds i8, i8* %0, i64 %7
%9 = load i8, i8* %8
%10 = tail call i32 @isBlank(i8 signext %9)
%11 = icmp ne i32 %10, 0
%12 = zext i1 %11 to i32
br label %13
13: ; preds = %6, %2
%14 = phi i32 [ 0, %2 ], [ %12, %6 ]
ret i32 %14
}