#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*/ execvp(char *, char **);
int main() {
  char *argv[] = {"ls", "-l", "-h", "-a", NULL};
  execvp(argv[0], argv);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x30(%rbp),%rdi
xor    %esi,%esi
mov    $0x28,%edx
call   1030 <memset@plt>
lea    0xeba(%rip),%rax
mov    %rax,-0x30(%rbp)
lea    0xeb2(%rip),%rax
mov    %rax,-0x28(%rbp)
lea    0xeaa(%rip),%rax
mov    %rax,-0x20(%rbp)
lea    0xea2(%rip),%rax
mov    %rax,-0x18(%rbp)
mov    -0x30(%rbp),%rdi
lea    -0x30(%rbp),%rsi
call   1040 <execvp@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x28,%rsp
movq   $0x0,0x20(%rsp)
lea    0xedc(%rip),%rdi
mov    %rdi,(%rsp)
lea    0xed4(%rip),%rax
mov    %rax,0x8(%rsp)
lea    0xecb(%rip),%rax
mov    %rax,0x10(%rsp)
lea    0xec2(%rip),%rax
mov    %rax,0x18(%rsp)
mov    %rsp,%rsi
call   1030 <execvp@plt>
xor    %eax,%eax
add    $0x28,%rsp
ret

LLVM IR (-O0):
@.str = [3 x i8] c"ls\00"
@.str.1 = [3 x i8] c"-l\00"
@.str.2 = [3 x i8] c"-h\00"
@.str.3 = [3 x i8] c"-a\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [5 x i8*]
store i32 0, i32* %1
%3 = bitcast [5 x i8*]* %2 to i8*
%4 = bitcast i8* %3 to [5 x i8*]*
%5 = getelementptr inbounds [5 x i8*], [5 x i8*]* %4, i32 0, i32 0
store i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i32 0, i32 0), i8** %5
%6 = getelementptr inbounds [5 x i8*], [5 x i8*]* %4, i32 0, i32 1
store i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i32 0, i32 0), i8** %6
%7 = getelementptr inbounds [5 x i8*], [5 x i8*]* %4, i32 0, i32 2
store i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i32 0, i32 0), i8** %7
%8 = getelementptr inbounds [5 x i8*], [5 x i8*]* %4, i32 0, i32 3
store i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i32 0, i32 0), i8** %8
%9 = getelementptr inbounds [5 x i8*], [5 x i8*]* %2, i64 0, i64 0
%10 = load i8*, i8** %9
%11 = getelementptr inbounds [5 x i8*], [5 x i8*]* %2, i64 0, i64 0
%12 = call i32 @execvp(i8* %10, i8** %11)
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"ls\00"
@.str.1 = [3 x i8] c"-l\00"
@.str.2 = [3 x i8] c"-h\00"
@.str.3 = [3 x i8] c"-a\00"
define i32 @main() {
%1 = alloca [5 x i8*]
%2 = bitcast [5 x i8*]* %1 to i8*
%3 = getelementptr inbounds [5 x i8*], [5 x i8*]* %1, i64 0, i64 4
%4 = bitcast i8** %3 to i64*
store i64 0, i64* %4
%5 = getelementptr inbounds [5 x i8*], [5 x i8*]* %1, i64 0, i64 0
store i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8** %5
%6 = getelementptr inbounds [5 x i8*], [5 x i8*]* %1, i64 0, i64 1
store i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i8** %6
%7 = getelementptr inbounds [5 x i8*], [5 x i8*]* %1, i64 0, i64 2
store i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i8** %7
%8 = getelementptr inbounds [5 x i8*], [5 x i8*]* %1, i64 0, i64 3
store i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0), i8** %8
%9 = call i32 @execvp(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8** %5)
ret i32 0
}