#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*/ FILE;

/* Variables and functions */
int countNDoubles(int /*<<< orphan*/ *);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ stderr;
int readNumParams(char *fname) {
  FILE *fp;
  int n;
  if ((fp = fopen(fname, "r")) == NULL) {
    fprintf(stderr, "error opening file %s!\n", fname);
    exit(1);
  }
  n = countNDoubles(fp);
  fclose(fp);
  return n;
}


x86 assembly (clang, -O0):
<readNumParams>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xe99(%rip),%rsi
call   1060 <fopen@plt>
mov    %rax,-0x10(%rbp)
cmp    $0x0,%rax
jne    119d <readNumParams+0x4d>
mov    0x2e5f(%rip),%rax
mov    (%rax),%edi
mov    -0x8(%rbp),%rdx
lea    0xe74(%rip),%rsi
call   1050 <fprintf@plt>
mov    $0x1,%edi
call   1070 <exit@plt>
mov    -0x10(%rbp),%rdi
call   1040 <countNDoubles@plt>
mov    %eax,-0x14(%rbp)
mov    -0x10(%rbp),%rdi
call   1030 <fclose@plt>
mov    -0x14(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<readNumParams>:
push   %rbp
push   %r14
push   %rbx
mov    %rdi,%r14
lea    0xea2(%rip),%rsi
call   1060 <fopen@plt>
test   %rax,%rax
je     1184 <readNumParams+0x34>
mov    %rax,%rbx
mov    %rax,%rdi
call   1040 <countNDoubles@plt>
mov    %eax,%ebp
mov    %rbx,%rdi
call   1030 <fclose@plt>
mov    %ebp,%eax
pop    %rbx
pop    %r14
pop    %rbp
ret
mov    0x2e55(%rip),%rax
mov    (%rax),%edi
lea    0xe6e(%rip),%rsi
mov    %r14,%rdx
call   1050 <fprintf@plt>
mov    $0x1,%edi
call   1070 <exit@plt>

LLVM IR (-O0):
@.str = [2 x i8] c"r\00"
@stderr = global i32 0
@.str.1 = [24 x i8] c"error opening file %s!\0A\00"
define i32 @readNumParams(i8* %0) {
%2 = alloca i8*
%3 = alloca i32*
%4 = alloca i32
store i8* %0, i8** %2
%5 = load i8*, i8** %2
%6 = call i32* @fopen(i8* %5, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
store i32* %6, i32** %3
%7 = icmp eq i32* %6, null
br i1 %7, label %8, label %13
8: ; preds = %1
%9 = load i32, i32* @stderr
%10 = load i8*, i8** %2
%11 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i8* %10)
%12 = call i32 @exit(i32 1)
unreachable
13: ; preds = %1
%14 = load i32*, i32** %3
%15 = call i32 @countNDoubles(i32* %14)
store i32 %15, i32* %4
%16 = load i32*, i32** %3
%17 = call i32 @fclose(i32* %16)
%18 = load i32, i32* %4
ret i32 %18
}

LLVM IR (-O2):
@.str = [2 x i8] c"r\00"
@stderr = global i32 0
@.str.1 = [24 x i8] c"error opening file %s!\0A\00"
define i32 @readNumParams(i8* %0) {
%2 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32* %2, null
br i1 %3, label %4, label %8
4: ; preds = %1
%5 = load i32, i32* @stderr
%6 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i8* %0)
%7 = tail call i32 @exit(i32 1)
unreachable
8: ; preds = %1
%9 = tail call i32 @countNDoubles(i32* %2)
%10 = tail call i32 @fclose(i32* %2)
ret i32 %9
}