#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*/ printf(char *, ...);
int main() {
  int i, n = 7;
  int a[n];
  for (i = 0; i < n; i++)
    a[i] = i + 1;
#pragma omp parallel for shared(a)
  for (i = 0; i < n; i++) {
    a[i] += i;
  }
  printf("In main program after parallel for:\n");
  for (i = 0; i < n; i++)
    printf("a[%d] = %d\n", i, a[i]);
  return (0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x7,-0xc(%rbp)
mov    -0xc(%rbp),%eax
mov    %rsp,%rcx
mov    %rcx,-0x18(%rbp)
lea    0xf(,%rax,4),%rdx
and    $0xfffffffffffffff0,%rdx
mov    %rsp,%rcx
sub    %rdx,%rcx
mov    %rcx,-0x28(%rbp)
mov    %rcx,%rsp
mov    %rax,-0x20(%rbp)
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    117f <main+0x6f>
mov    -0x28(%rbp),%rax
mov    -0x8(%rbp),%edx
add    $0x1,%edx
movslq -0x8(%rbp),%rcx
mov    %edx,(%rax,%rcx,4)
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1154 <main+0x44>
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    11b1 <main+0xa1>
mov    -0x28(%rbp),%rax
mov    -0x8(%rbp),%edx
movslq -0x8(%rbp),%rcx
add    (%rax,%rcx,4),%edx
mov    %edx,(%rax,%rcx,4)
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1186 <main+0x76>
lea    0xe48(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    11fc <main+0xec>
mov    -0x28(%rbp),%rax
mov    -0x8(%rbp),%esi
movslq -0x8(%rbp),%rcx
mov    (%rax,%rcx,4),%edx
lea    0xe3e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    11c6 <main+0xb6>
movl   $0x0,-0x4(%rbp)
mov    -0x18(%rbp),%rax
mov    %rax,%rsp
mov    -0x4(%rbp),%eax
mov    %rbp,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
lea    0xee4(%rip),%rdi
call   1030 <puts@plt>
lea    0xecc(%rip),%rbx
mov    %rbx,%rdi
xor    %esi,%esi
mov    $0x1,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x1,%esi
mov    $0x3,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x2,%esi
mov    $0x5,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x3,%esi
mov    $0x7,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x4,%esi
mov    $0x9,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x5,%esi
mov    $0xb,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %rbx,%rdi
mov    $0x6,%esi
mov    $0xd,%edx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rbx
ret

LLVM IR (-O0):
@.str = [37 x i8] c"In main program after parallel for:\0A\00"
@.str.1 = [12 x i8] c"a[%d] = %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i8*
%5 = alloca i64
store i32 0, i32* %1
store i32 7, i32* %3
%6 = load i32, i32* %3
%7 = zext i32 %6 to i64
%8 = call i8* @llvm.stacksave()
store i8* %8, i8** %4
%9 = alloca i32, i64 %7
store i64 %7, i64* %5
store i32 0, i32* %2
br label %10
10: ; preds = %20, %0
%11 = load i32, i32* %2
%12 = load i32, i32* %3
%13 = icmp slt i32 %11, %12
br i1 %13, label %14, label %23
14: ; preds = %10
%15 = load i32, i32* %2
%16 = add nsw i32 %15, 1
%17 = load i32, i32* %2
%18 = sext i32 %17 to i64
%19 = getelementptr inbounds i32, i32* %9, i64 %18
store i32 %16, i32* %19
br label %20
20: ; preds = %14
%21 = load i32, i32* %2
%22 = add nsw i32 %21, 1
store i32 %22, i32* %2
br label %10
23: ; preds = %10
store i32 0, i32* %2
br label %24
24: ; preds = %35, %23
%25 = load i32, i32* %2
%26 = load i32, i32* %3
%27 = icmp slt i32 %25, %26
br i1 %27, label %28, label %38
28: ; preds = %24
%29 = load i32, i32* %2
%30 = load i32, i32* %2
%31 = sext i32 %30 to i64
%32 = getelementptr inbounds i32, i32* %9, i64 %31
%33 = load i32, i32* %32
%34 = add nsw i32 %33, %29
store i32 %34, i32* %32
br label %35
35: ; preds = %28
%36 = load i32, i32* %2
%37 = add nsw i32 %36, 1
store i32 %37, i32* %2
br label %24
38: ; preds = %24
%39 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %2
br label %40
40: ; preds = %51, %38
%41 = load i32, i32* %2
%42 = load i32, i32* %3
%43 = icmp slt i32 %41, %42
br i1 %43, label %44, label %54
44: ; preds = %40
%45 = load i32, i32* %2
%46 = load i32, i32* %2
%47 = sext i32 %46 to i64
%48 = getelementptr inbounds i32, i32* %9, i64 %47
%49 = load i32, i32* %48
%50 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 %45, i32 %49)
br label %51
51: ; preds = %44
%52 = load i32, i32* %2
%53 = add nsw i32 %52, 1
store i32 %53, i32* %2
br label %40
54: ; preds = %40
store i32 0, i32* %1
%55 = load i8*, i8** %4
%56 = load i32, i32* %1
ret i32 %56
}

LLVM IR (-O2):
@.str.1 = [12 x i8] c"a[%d] = %d\0A\00"
@str = [36 x i8] c"In main program after parallel for:\00"
define i32 @main() {
%1 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @str, i64 0, i64 0))
%2 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 0, i32 1)
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 1, i32 3)
%4 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 2, i32 5)
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 3, i32 7)
%6 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 4, i32 9)
%7 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 5, i32 11)
%8 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str.1, i64 0, i64 0), i32 6, i32 13)
ret i32 0
}