#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 */
typedef int /*<<< orphan*/ pem_password_cb;
typedef int /*<<< orphan*/ FILE;
typedef int /*<<< orphan*/ EVP_PKEY;
typedef int /*<<< orphan*/ BIO;

/* Variables and functions */
int /*<<< orphan*/ BIO_NOCLOSE;
int /*<<< orphan*/ BIO_free(int /*<<< orphan*/ *);
int /*<<< orphan*/ *BIO_new(int /*<<< orphan*/);
int /*<<< orphan*/ BIO_s_file();
int /*<<< orphan*/ BIO_set_fp(int /*<<< orphan*/ *, int /*<<< orphan*/ *,
                              int /*<<< orphan*/);
int /*<<< orphan*/ ERR_R_BUF_LIB;
int /*<<< orphan*/ *PEM_read_bio_PrivateKey(int /*<<< orphan*/ *,
                                            int /*<<< orphan*/ **,
                                            int /*<<< orphan*/ *, void *);
int /*<<< orphan*/ PEMerror(int /*<<< orphan*/);
EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
                              void *u) {
  BIO *b;
  EVP_PKEY *ret;
  if ((b = BIO_new(BIO_s_file())) == NULL) {
    PEMerror(ERR_R_BUF_LIB);
    return (0);
  }
  BIO_set_fp(b, fp, BIO_NOCLOSE);
  ret = PEM_read_bio_PrivateKey(b, x, cb, u);
  BIO_free(b);
  return (ret);
}


x86 assembly (clang, -O0):
<PEM_read_PrivateKey>:
push   %rbp
mov    %rsp,%rbp
sub    $0x40,%rsp
mov    %rdi,-0x10(%rbp)
mov    %rsi,-0x18(%rbp)
mov    %rdx,-0x20(%rbp)
mov    %rcx,-0x28(%rbp)
mov    $0x0,%al
call   1080 <BIO_s_file@plt>
mov    %eax,%edi
call   1040 <BIO_new@plt>
mov    %rax,-0x30(%rbp)
cmp    $0x0,%rax
jne    11af <PEM_read_PrivateKey+0x4f>
mov    0x2e5d(%rip),%rax
mov    (%rax),%edi
call   1030 <PEMerror@plt>
movq   $0x0,-0x8(%rbp)
jmp    11ef <PEM_read_PrivateKey+0x8f>
mov    -0x30(%rbp),%rdi
mov    -0x10(%rbp),%rsi
mov    0x2e22(%rip),%rax
mov    (%rax),%edx
call   1060 <BIO_set_fp@plt>
mov    -0x30(%rbp),%rdi
mov    -0x18(%rbp),%rsi
mov    -0x20(%rbp),%rdx
mov    -0x28(%rbp),%rcx
call   1070 <PEM_read_bio_PrivateKey@plt>
mov    %rax,-0x38(%rbp)
mov    -0x30(%rbp),%rdi
call   1050 <BIO_free@plt>
mov    -0x38(%rbp),%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
add    $0x40,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<PEM_read_PrivateKey>:
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
mov    %rcx,%r14
mov    %rdx,%r15
mov    %rsi,%r12
mov    %rdi,%r13
xor    %eax,%eax
call   1080 <BIO_s_file@plt>
mov    %eax,%edi
call   1040 <BIO_new@plt>
test   %rax,%rax
je     11c0 <PEM_read_PrivateKey+0x60>
mov    %rax,%rbx
mov    0x2e4e(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
mov    %r13,%rsi
call   1060 <BIO_set_fp@plt>
mov    %rbx,%rdi
mov    %r12,%rsi
mov    %r15,%rdx
mov    %r14,%rcx
call   1070 <PEM_read_bio_PrivateKey@plt>
mov    %rax,%r14
mov    %rbx,%rdi
call   1050 <BIO_free@plt>
mov    %r14,%rax
jmp    11d0 <PEM_read_PrivateKey+0x70>
mov    0x2e31(%rip),%rax
mov    (%rax),%edi
call   1030 <PEMerror@plt>
xor    %eax,%eax
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@ERR_R_BUF_LIB = global i32 0
@BIO_NOCLOSE = global i32 0
define i32* @PEM_read_PrivateKey(i32* %0, i32** %1, i32* %2, i8* %3) {
%5 = alloca i32*
%6 = alloca i32*
%7 = alloca i32**
%8 = alloca i32*
%9 = alloca i8*
%10 = alloca i32*
%11 = alloca i32*
store i32* %0, i32** %6
store i32** %1, i32*** %7
store i32* %2, i32** %8
store i8* %3, i8** %9
%12 = call i32 (...) @BIO_s_file()
%13 = call i32* @BIO_new(i32 %12)
store i32* %13, i32** %10
%14 = icmp eq i32* %13, null
br i1 %14, label %15, label %18
15: ; preds = %4
%16 = load i32, i32* @ERR_R_BUF_LIB
%17 = call i32 @PEMerror(i32 %16)
store i32* null, i32** %5
br label %31
18: ; preds = %4
%19 = load i32*, i32** %10
%20 = load i32*, i32** %6
%21 = load i32, i32* @BIO_NOCLOSE
%22 = call i32 @BIO_set_fp(i32* %19, i32* %20, i32 %21)
%23 = load i32*, i32** %10
%24 = load i32**, i32*** %7
%25 = load i32*, i32** %8
%26 = load i8*, i8** %9
%27 = call i32* @PEM_read_bio_PrivateKey(i32* %23, i32** %24, i32* %25, i8* %26)
store i32* %27, i32** %11
%28 = load i32*, i32** %10
%29 = call i32 @BIO_free(i32* %28)
%30 = load i32*, i32** %11
store i32* %30, i32** %5
br label %31
31: ; preds = %18, %15
%32 = load i32*, i32** %5
ret i32* %32
}

LLVM IR (-O2):
@ERR_R_BUF_LIB = global i32 0
@BIO_NOCLOSE = global i32 0
define i32* @PEM_read_PrivateKey(i32* %0, i32** %1, i32* %2, i8* %3) {
%5 = tail call i32 (...) @BIO_s_file()
%6 = tail call i32* @BIO_new(i32 %5)
%7 = icmp eq i32* %6, null
br i1 %7, label %8, label %11
8: ; preds = %4
%9 = load i32, i32* @ERR_R_BUF_LIB
%10 = tail call i32 @PEMerror(i32 %9)
br label %16
11: ; preds = %4
%12 = load i32, i32* @BIO_NOCLOSE
%13 = tail call i32 @BIO_set_fp(i32* %6, i32* %0, i32 %12)
%14 = tail call i32* @PEM_read_bio_PrivateKey(i32* %6, i32** %1, i32* %2, i8* %3)
%15 = tail call i32 @BIO_free(i32* %6)
br label %16
16: ; preds = %11, %8
%17 = phi i32* [ null, %8 ], [ %14, %11 ]
ret i32* %17
}