#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 *);
scalar_t__ malloc(int);
int /*<<< orphan*/ stderr;
double *matrix_alloc_cpu(int size_x, int size_y) {
  double *p;
  p = (double *)malloc(size_x * size_y * sizeof(double));
  if (p == NULL) {
    fprintf(stderr, "I cannot reserve host memory for the matrix.\n");
    exit(EXIT_FAILURE);
  }
  return p;
}


x86 assembly (clang, -O0):
<matrix_alloc_cpu>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
mov    %esi,-0x8(%rbp)
mov    -0x4(%rbp),%eax
imul   -0x8(%rbp),%eax
cltq
shl    $0x3,%rax
mov    %eax,%edi
call   1040 <malloc@plt>
mov    %rax,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
jne    1184 <matrix_alloc_cpu+0x54>
mov    0x2e78(%rip),%rax
mov    (%rax),%edi
lea    0xe8f(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e5b(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>
mov    -0x10(%rbp),%rax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<matrix_alloc_cpu>:
push   %rax
imul   %esi,%edi
shl    $0x3,%edi
call   1040 <malloc@plt>
test   %rax,%rax
je     1143 <matrix_alloc_cpu+0x13>
pop    %rcx
ret
mov    0x2e96(%rip),%rax
mov    (%rax),%edi
lea    0xead(%rip),%rsi
call   1030 <fprintf@plt>
mov    0x2e79(%rip),%rax
mov    (%rax),%edi
call   1050 <exit@plt>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [46 x i8] c"I cannot reserve host memory for the matrix.\0A\00"
@EXIT_FAILURE = global i32 0
define double* @matrix_alloc_cpu(i32 %0, i32 %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca double*
store i32 %0, i32* %3
store i32 %1, i32* %4
%6 = load i32, i32* %3
%7 = load i32, i32* %4
%8 = mul nsw i32 %6, %7
%9 = sext i32 %8 to i64
%10 = mul i64 %9, 8
%11 = trunc i64 %10 to i32
%12 = call i64 @malloc(i32 %11)
%13 = inttoptr i64 %12 to double*
store double* %13, double** %5
%14 = load double*, double** %5
%15 = icmp eq double* %14, null
br i1 %15, label %16, label %21
16: ; preds = %2
%17 = load i32, i32* @stderr
%18 = call i32 @fprintf(i32 %17, i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str, i64 0, i64 0))
%19 = load i32, i32* @EXIT_FAILURE
%20 = call i32 @exit(i32 %19)
unreachable
21: ; preds = %2
%22 = load double*, double** %5
ret double* %22
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [46 x i8] c"I cannot reserve host memory for the matrix.\0A\00"
@EXIT_FAILURE = global i32 0
define double* @matrix_alloc_cpu(i32 %0, i32 %1) {
%3 = shl i32 %0, 3
%4 = mul i32 %3, %1
%5 = tail call i64 @malloc(i32 %4)
%6 = icmp eq i64 %5, 0
br i1 %6, label %7, label %12
7: ; preds = %2
%8 = load i32, i32* @stderr
%9 = tail call i32 @fprintf(i32 %8, i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str, i64 0, i64 0))
%10 = load i32, i32* @EXIT_FAILURE
%11 = tail call i32 @exit(i32 %10)
unreachable
12: ; preds = %2
%13 = inttoptr i64 %5 to double*
ret double* %13
}