#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 */
typedef struct TYPE_4__ TYPE_2__;
typedef struct TYPE_3__ TYPE_1__;

/* Type definitions */
struct TYPE_4__ {
  scalar_t__ tv_usec;
  scalar_t__ tv_sec;
};
struct TYPE_3__ {
  scalar_t__ tv_usec;
  scalar_t__ tv_sec;
};
struct rusage {
  TYPE_2__ ru_stime;
  TYPE_1__ ru_utime;
};

/* Variables and functions */
int /*<<< orphan*/ RUSAGE_SELF;
int /*<<< orphan*/ getrusage(int /*<<< orphan*/, struct rusage *);
double dclock_() {
  struct rusage ru;
  double t;
  getrusage(RUSAGE_SELF, &ru);
  t = (double)ru.ru_utime.tv_sec + (double)ru.ru_stime.tv_sec;
  t += ((double)ru.ru_utime.tv_usec + (double)ru.ru_stime.tv_usec) * 1.0e-6;
  return t;
}


x86 assembly (clang, -O0):
<dclock_>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    0x2ec1(%rip),%rax
mov    (%rax),%edi
lea    -0x20(%rbp),%rsi
call   1030 <getrusage@plt>
cvtsi2sdq -0x8(%rbp),%xmm0
cvtsi2sdq -0x18(%rbp),%xmm1
addsd  %xmm1,%xmm0
movsd  %xmm0,-0x28(%rbp)
cvtsi2sdq -0x10(%rbp),%xmm0
cvtsi2sdq -0x20(%rbp),%xmm1
addsd  %xmm1,%xmm0
movsd  -0x28(%rbp),%xmm1
movsd  0xea4(%rip),%xmm2
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
movsd  %xmm0,-0x28(%rbp)
movsd  -0x28(%rbp),%xmm0
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dclock_>:
sub    $0x28,%rsp
mov    0x2ec5(%rip),%rax
mov    (%rax),%edi
lea    0x8(%rsp),%rsi
call   1030 <getrusage@plt>
cvtsi2sdq 0x20(%rsp),%xmm0
cvtsi2sdq 0x10(%rsp),%xmm1
addsd  %xmm0,%xmm1
cvtsi2sdq 0x18(%rsp),%xmm2
xorps  %xmm0,%xmm0
cvtsi2sdq 0x8(%rsp),%xmm0
addsd  %xmm2,%xmm0
mulsd  0xeaa(%rip),%xmm0
addsd  %xmm1,%xmm0
add    $0x28,%rsp
ret

LLVM IR (-O0):
%struct.rusage = type { %struct.TYPE_4__, %struct.TYPE_3__ }
%struct.TYPE_4__ = type { i64, i64 }
%struct.TYPE_3__ = type { i64, i64 }
@RUSAGE_SELF = global i32 0
define double @dclock_() {
%1 = alloca %struct.rusage
%2 = alloca double
%3 = load i32, i32* @RUSAGE_SELF
%4 = call i32 @getrusage(i32 %3, %struct.rusage* %1)
%5 = getelementptr inbounds %struct.rusage, %struct.rusage* %1, i32 0, i32 1
%6 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %5, i32 0, i32 1
%7 = load i64, i64* %6
%8 = sitofp i64 %7 to double
%9 = getelementptr inbounds %struct.rusage, %struct.rusage* %1, i32 0, i32 0
%10 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %9, i32 0, i32 1
%11 = load i64, i64* %10
%12 = sitofp i64 %11 to double
%13 = fadd double %8, %12
store double %13, double* %2
%14 = getelementptr inbounds %struct.rusage, %struct.rusage* %1, i32 0, i32 1
%15 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %14, i32 0, i32 0
%16 = load i64, i64* %15
%17 = sitofp i64 %16 to double
%18 = getelementptr inbounds %struct.rusage, %struct.rusage* %1, i32 0, i32 0
%19 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %18, i32 0, i32 0
%20 = load i64, i64* %19
%21 = sitofp i64 %20 to double
%22 = fadd double %17, %21
%23 = load double, double* %2
%24 = call double @llvm.fmuladd.f64(double %22, double 0x3EB0C6F7A0B5ED8D, double %23)
store double %24, double* %2
%25 = load double, double* %2
ret double %25
}

LLVM IR (-O2):
%struct.rusage = type { %struct.TYPE_4__, %struct.TYPE_3__ }
%struct.TYPE_4__ = type { i64, i64 }
%struct.TYPE_3__ = type { i64, i64 }
@RUSAGE_SELF = global i32 0
define double @dclock_() {
%1 = alloca %struct.rusage
%2 = bitcast %struct.rusage* %1 to i8*
%3 = load i32, i32* @RUSAGE_SELF
%4 = call i32 @getrusage(i32 %3, %struct.rusage* %1)
%5 = getelementptr inbounds %struct.rusage, %struct.rusage* %1, i64 0, i32 1, i32 1
%6 = load i64, i64* %5
%7 = sitofp i64 %6 to double
%8 = getelementptr inbounds %struct.rusage, %struct.rusage* %1, i64 0, i32 0, i32 1
%9 = load i64, i64* %8
%10 = sitofp i64 %9 to double
%11 = fadd double %7, %10
%12 = getelementptr inbounds %struct.rusage, %struct.rusage* %1, i64 0, i32 1, i32 0
%13 = load i64, i64* %12
%14 = sitofp i64 %13 to double
%15 = getelementptr inbounds %struct.rusage, %struct.rusage* %1, i64 0, i32 0, i32 0
%16 = load i64, i64* %15
%17 = sitofp i64 %16 to double
%18 = fadd double %14, %17
%19 = call double @llvm.fmuladd.f64(double %18, double 0x3EB0C6F7A0B5ED8D, double %11)
ret double %19
}