#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*/ assert_log(int, int, char *, int *);
int starts_with(char *, char *);
int test_starts_with(int verbose) {
  int ok = 1;
  assert_log(starts_with("whatever", "what"), verbose, "starts_with!", &ok);
  assert_log(!starts_with("whatever", "whzt"), verbose, "starts_with", &ok);
  return ok;
}


x86 assembly (clang, -O0):
<test_starts_with>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
movl   $0x1,-0x8(%rbp)
lea    0xec7(%rip),%rdi
lea    0xec9(%rip),%rsi
call   1040 <starts_with@plt>
mov    %eax,%edi
mov    -0x4(%rbp),%esi
lea    0xebd(%rip),%rdx
lea    -0x8(%rbp),%rcx
call   1030 <assert_log@plt>
lea    0xe9f(%rip),%rdi
lea    0xeb3(%rip),%rsi
call   1040 <starts_with@plt>
cmp    $0x0,%eax
setne  %al
xor    $0xff,%al
and    $0x1,%al
movzbl %al,%edi
mov    -0x4(%rbp),%esi
lea    0xe9c(%rip),%rdx
lea    -0x8(%rbp),%rcx
call   1030 <assert_log@plt>
mov    -0x8(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<test_starts_with>:
push   %r15
push   %r14
push   %rbx
sub    $0x10,%rsp
mov    %edi,%ebx
movl   $0x1,0xc(%rsp)
lea    0xec6(%rip),%r14
lea    0xec8(%rip),%rsi
mov    %r14,%rdi
call   1040 <starts_with@plt>
lea    0xebe(%rip),%rdx
lea    0xc(%rsp),%r15
mov    %eax,%edi
mov    %ebx,%esi
mov    %r15,%rcx
call   1030 <assert_log@plt>
lea    0xeb3(%rip),%rsi
mov    %r14,%rdi
call   1040 <starts_with@plt>
xor    %edi,%edi
test   %eax,%eax
sete   %dil
lea    0xea1(%rip),%rdx
mov    %ebx,%esi
mov    %r15,%rcx
call   1030 <assert_log@plt>
mov    0xc(%rsp),%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [9 x i8] c"whatever\00"
@.str.1 = [5 x i8] c"what\00"
@.str.2 = [13 x i8] c"starts_with!\00"
@.str.3 = [5 x i8] c"whzt\00"
@.str.4 = [12 x i8] c"starts_with\00"
define i32 @test_starts_with(i32 %0) {
%2 = alloca i32
%3 = alloca i32
store i32 %0, i32* %2
store i32 1, i32* %3
%4 = call i32 @starts_with(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%5 = load i32, i32* %2
%6 = call i32 @assert_log(i32 %4, i32 %5, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), i32* %3)
%7 = call i32 @starts_with(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%8 = icmp ne i32 %7, 0
%9 = xor i1 %8, true
%10 = zext i1 %9 to i32
%11 = load i32, i32* %2
%12 = call i32 @assert_log(i32 %10, i32 %11, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.4, i64 0, i64 0), i32* %3)
%13 = load i32, i32* %3
ret i32 %13
}

LLVM IR (-O2):
@.str = [9 x i8] c"whatever\00"
@.str.1 = [5 x i8] c"what\00"
@.str.2 = [13 x i8] c"starts_with!\00"
@.str.3 = [5 x i8] c"whzt\00"
@.str.4 = [12 x i8] c"starts_with\00"
define i32 @test_starts_with(i32 %0) {
%2 = alloca i32
%3 = bitcast i32* %2 to i8*
store i32 1, i32* %2
%4 = tail call i32 @starts_with(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 @assert_log(i32 %4, i32 %0, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), i32* %2)
%6 = call i32 @starts_with(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.3, i64 0, i64 0))
%7 = icmp eq i32 %6, 0
%8 = zext i1 %7 to i32
%9 = call i32 @assert_log(i32 %8, i32 %0, i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.4, i64 0, i64 0), i32* %2)
%10 = load i32, i32* %2
ret i32 %10
}