#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(int);
int myStrstr(char *, char *);
int main(int argc, char **argv) {
  assert(myStrstr("Hello", "H") == 0);
  assert(myStrstr("Hello", "llo") == 2);
  assert(myStrstr("Hello", "o") == 4);
  assert(myStrstr("Hello", "") == 0);
  assert(myStrstr("Hello", "R") == -1);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
mov    %rsi,-0x10(%rbp)
lea    0xeca(%rip),%rdi
lea    0xec9(%rip),%rsi
call   1030 <myStrstr@plt>
cmp    $0x0,%eax
sete   %al
and    $0x1,%al
movzbl %al,%edi
call   1040 <assert@plt>
lea    0xea7(%rip),%rdi
lea    0xea2(%rip),%rsi
call   1030 <myStrstr@plt>
cmp    $0x2,%eax
sete   %al
and    $0x1,%al
movzbl %al,%edi
call   1040 <assert@plt>
lea    0xe84(%rip),%rdi
lea    0xe81(%rip),%rsi
call   1030 <myStrstr@plt>
cmp    $0x4,%eax
sete   %al
and    $0x1,%al
movzbl %al,%edi
call   1040 <assert@plt>
lea    0xe61(%rip),%rdi
lea    0xe61(%rip),%rsi
call   1030 <myStrstr@plt>
cmp    $0x0,%eax
sete   %al
and    $0x1,%al
movzbl %al,%edi
call   1040 <assert@plt>
lea    0xe3e(%rip),%rdi
lea    0xe3f(%rip),%rsi
call   1030 <myStrstr@plt>
cmp    $0xffffffff,%eax
sete   %al
and    $0x1,%al
movzbl %al,%edi
call   1040 <assert@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xed8(%rip),%rbx
lea    0xed7(%rip),%rsi
mov    %rbx,%rdi
call   1030 <myStrstr@plt>
xor    %edi,%edi
test   %eax,%eax
sete   %dil
call   1040 <assert@plt>
lea    0xeb7(%rip),%rsi
mov    %rbx,%rdi
call   1030 <myStrstr@plt>
xor    %edi,%edi
cmp    $0x2,%eax
sete   %dil
call   1040 <assert@plt>
lea    0xe9c(%rip),%rsi
mov    %rbx,%rdi
call   1030 <myStrstr@plt>
xor    %edi,%edi
cmp    $0x4,%eax
sete   %dil
call   1040 <assert@plt>
lea    0xe82(%rip),%rsi
mov    %rbx,%rdi
call   1030 <myStrstr@plt>
xor    %edi,%edi
test   %eax,%eax
sete   %dil
call   1040 <assert@plt>
lea    0xe67(%rip),%rsi
mov    %rbx,%rdi
call   1030 <myStrstr@plt>
xor    %edi,%edi
cmp    $0xffffffff,%eax
sete   %dil
call   1040 <assert@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [6 x i8] c"Hello\00"
@.str.1 = [2 x i8] c"H\00"
@.str.2 = [4 x i8] c"llo\00"
@.str.3 = [2 x i8] c"o\00"
@.str.4 = [1 x i8] zeroinitializer
@.str.5 = [2 x i8] c"R\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i8**
store i32 %0, i32* %3
store i8** %1, i8*** %4
%5 = call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%6 = icmp eq i32 %5, 0
%7 = zext i1 %6 to i32
%8 = call i32 @assert(i32 %7)
%9 = call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0))
%10 = icmp eq i32 %9, 2
%11 = zext i1 %10 to i32
%12 = call i32 @assert(i32 %11)
%13 = call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%14 = icmp eq i32 %13, 4
%15 = zext i1 %14 to i32
%16 = call i32 @assert(i32 %15)
%17 = call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.4, i64 0, i64 0))
%18 = icmp eq i32 %17, 0
%19 = zext i1 %18 to i32
%20 = call i32 @assert(i32 %19)
%21 = call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.5, i64 0, i64 0))
%22 = icmp eq i32 %21, -1
%23 = zext i1 %22 to i32
%24 = call i32 @assert(i32 %23)
ret i32 0
}

LLVM IR (-O2):
@.str = [6 x i8] c"Hello\00"
@.str.1 = [2 x i8] c"H\00"
@.str.2 = [4 x i8] c"llo\00"
@.str.3 = [2 x i8] c"o\00"
@.str.4 = [1 x i8] zeroinitializer
@.str.5 = [2 x i8] c"R\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = tail call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%4 = icmp eq i32 %3, 0
%5 = zext i1 %4 to i32
%6 = tail call i32 @assert(i32 %5)
%7 = tail call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0))
%8 = icmp eq i32 %7, 2
%9 = zext i1 %8 to i32
%10 = tail call i32 @assert(i32 %9)
%11 = tail call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
%12 = icmp eq i32 %11, 4
%13 = zext i1 %12 to i32
%14 = tail call i32 @assert(i32 %13)
%15 = tail call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str.4, i64 0, i64 0))
%16 = icmp eq i32 %15, 0
%17 = zext i1 %16 to i32
%18 = tail call i32 @assert(i32 %17)
%19 = tail call i32 @myStrstr(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.5, i64 0, i64 0))
%20 = icmp eq i32 %19, -1
%21 = zext i1 %20 to i32
%22 = tail call i32 @assert(i32 %21)
ret i32 0
}