#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*/ EXIT_FAILURE;
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
scalar_t__ malloc(int);
int /*<<< orphan*/ stderr;
double *dvector(int nh) {
  int j;
  double *v;
  v = (double *)malloc(nh * sizeof(double));
  if (!v) {
    fprintf(stderr, "%s\n", "ERROR: Allocation failure in dvector()");
    exit(EXIT_FAILURE);
  }
  for (j = 0; j < nh; j++) {
    v[j] = 0.0;
  }
  return v;
}


x86 assembly (clang, -O0):
<dvector>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
movslq -0x4(%rbp),%rax
shl    $0x3,%rax
mov    %eax,%edi
call   1040 <malloc@plt>
mov    %rax,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
jne    1183 <dvector+0x53>
mov    0x2e80(%rip),%rax
mov    (%rax),%edi
lea    0xe97(%rip),%rsi
lea    0xe94(%rip),%rdx
call   1030 <fprintf@plt>
mov    0x2e5c(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0x4(%rbp),%eax
jge    11b4 <dvector+0x84>
mov    -0x10(%rbp),%rax
movslq -0x8(%rbp),%rcx
xorps  %xmm0,%xmm0
movsd  %xmm0,(%rax,%rcx,8)
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    118a <dvector+0x5a>
mov    -0x10(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dvector>:
push   %r14
push   %rbx
push   %rax
mov    %edi,%ebx
lea    0x0(,%rbx,8),%edi
call   1050 <malloc@plt>
test   %rax,%rax
je     1179 <dvector+0x39>
mov    %rax,%r14
test   %ebx,%ebx
jle    116e <dvector+0x2e>
mov    %ebx,%edx
shl    $0x3,%rdx
mov    %r14,%rdi
xor    %esi,%esi
call   1030 <memset@plt>
mov    %r14,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret
mov    0x2e60(%rip),%rax
mov    (%rax),%edi
lea    0xe77(%rip),%rsi
lea    0xe74(%rip),%rdx
call   1040 <fprintf@plt>
mov    0x2e3c(%rip),%rax
mov    (%rax),%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [4 x i8] c"%s\0A\00"
@.str.1 = [39 x i8] c"ERROR: Allocation failure in dvector()\00"
@EXIT_FAILURE = global i32 0
define double* @dvector(i32 %0) {
%2 = alloca i32
%3 = alloca i32
%4 = alloca double*
store i32 %0, i32* %2
%5 = load i32, i32* %2
%6 = sext i32 %5 to i64
%7 = mul i64 %6, 8
%8 = trunc i64 %7 to i32
%9 = call i64 @malloc(i32 %8)
%10 = inttoptr i64 %9 to double*
store double* %10, double** %4
%11 = load double*, double** %4
%12 = icmp ne double* %11, null
br i1 %12, label %18, label %13
13: ; preds = %1
%14 = load i32, i32* @stderr
%15 = call i32 @fprintf(i32 %14, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.1, i64 0, i64 0))
%16 = load i32, i32* @EXIT_FAILURE
%17 = call i32 @exit(i32 %16)
unreachable
18: ; preds = %1
store i32 0, i32* %3
br label %19
19: ; preds = %28, %18
%20 = load i32, i32* %3
%21 = load i32, i32* %2
%22 = icmp slt i32 %20, %21
br i1 %22, label %23, label %31
23: ; preds = %19
%24 = load double*, double** %4
%25 = load i32, i32* %3
%26 = sext i32 %25 to i64
%27 = getelementptr inbounds double, double* %24, i64 %26
store double 0.000000e+00, double* %27
br label %28
28: ; preds = %23
%29 = load i32, i32* %3
%30 = add nsw i32 %29, 1
store i32 %30, i32* %3
br label %19
31: ; preds = %19
%32 = load double*, double** %4
ret double* %32
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [4 x i8] c"%s\0A\00"
@.str.1 = [39 x i8] c"ERROR: Allocation failure in dvector()\00"
@EXIT_FAILURE = global i32 0
define double* @dvector(i32 %0) {
%2 = shl i32 %0, 3
%3 = tail call i64 @malloc(i32 %2)
%4 = inttoptr i64 %3 to i8*
%5 = icmp eq i64 %3, 0
br i1 %5, label %11, label %6
6: ; preds = %1
%7 = icmp sgt i32 %0, 0
br i1 %7, label %8, label %16
8: ; preds = %6
%9 = zext i32 %0 to i64
%10 = shl nuw nsw i64 %9, 3
br label %16
11: ; preds = %1
%12 = load i32, i32* @stderr
%13 = tail call i32 @fprintf(i32 %12, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str.1, i64 0, i64 0))
%14 = load i32, i32* @EXIT_FAILURE
%15 = tail call i32 @exit(i32 %14)
unreachable
16: ; preds = %8, %6
%17 = inttoptr i64 %3 to double*
ret double* %17
}