#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 */
double sqrt(double);
double dist(double x1, double x2, double y1, double y2, double z1, double z2) {
  double ans, dx, dy, dz;
  dx = x1 - x2;
  dy = y1 - y2;
  dz = z1 - z2;
  ans = sqrt(dx * dx + dy * dy + dz * dz);
  return (ans);
}


x86 assembly (clang, -O0):
<dist>:
push   %rbp
mov    %rsp,%rbp
sub    $0x50,%rsp
movsd  %xmm0,-0x8(%rbp)
movsd  %xmm1,-0x10(%rbp)
movsd  %xmm2,-0x18(%rbp)
movsd  %xmm3,-0x20(%rbp)
movsd  %xmm4,-0x28(%rbp)
movsd  %xmm5,-0x30(%rbp)
movsd  -0x8(%rbp),%xmm0
subsd  -0x10(%rbp),%xmm0
movsd  %xmm0,-0x40(%rbp)
movsd  -0x18(%rbp),%xmm0
subsd  -0x20(%rbp),%xmm0
movsd  %xmm0,-0x48(%rbp)
movsd  -0x28(%rbp),%xmm0
subsd  -0x30(%rbp),%xmm0
movsd  %xmm0,-0x50(%rbp)
movsd  -0x40(%rbp),%xmm1
movsd  -0x40(%rbp),%xmm2
movsd  -0x48(%rbp),%xmm0
mulsd  -0x48(%rbp),%xmm0
mulsd  %xmm2,%xmm1
addsd  %xmm0,%xmm1
movsd  -0x50(%rbp),%xmm0
movsd  -0x50(%rbp),%xmm2
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
call   1030 <sqrt@plt>
movsd  %xmm0,-0x38(%rbp)
movsd  -0x38(%rbp),%xmm0
add    $0x50,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dist>:
subsd  %xmm1,%xmm0
subsd  %xmm3,%xmm2
subsd  %xmm5,%xmm4
mulsd  %xmm2,%xmm2
mulsd  %xmm0,%xmm0
addsd  %xmm2,%xmm0
mulsd  %xmm4,%xmm4
addsd  %xmm0,%xmm4
xorpd  %xmm0,%xmm0
ucomisd %xmm0,%xmm4
jb     1142 <dist+0x32>
xorps  %xmm0,%xmm0
sqrtsd %xmm4,%xmm0
ret
movapd %xmm4,%xmm0
jmp    1030 <sqrt@plt>

LLVM IR (-O0):
define double @dist(double %0, double %1, double %2, double %3, double %4, double %5) {
%7 = alloca double
%8 = alloca double
%9 = alloca double
%10 = alloca double
%11 = alloca double
%12 = alloca double
%13 = alloca double
%14 = alloca double
%15 = alloca double
%16 = alloca double
store double %0, double* %7
store double %1, double* %8
store double %2, double* %9
store double %3, double* %10
store double %4, double* %11
store double %5, double* %12
%17 = load double, double* %7
%18 = load double, double* %8
%19 = fsub double %17, %18
store double %19, double* %14
%20 = load double, double* %9
%21 = load double, double* %10
%22 = fsub double %20, %21
store double %22, double* %15
%23 = load double, double* %11
%24 = load double, double* %12
%25 = fsub double %23, %24
store double %25, double* %16
%26 = load double, double* %14
%27 = load double, double* %14
%28 = load double, double* %15
%29 = load double, double* %15
%30 = fmul double %28, %29
%31 = call double @llvm.fmuladd.f64(double %26, double %27, double %30)
%32 = load double, double* %16
%33 = load double, double* %16
%34 = call double @llvm.fmuladd.f64(double %32, double %33, double %31)
%35 = call double @sqrt(double %34)
store double %35, double* %13
%36 = load double, double* %13
ret double %36
}

LLVM IR (-O2):
define double @dist(double %0, double %1, double %2, double %3, double %4, double %5) {
%7 = fsub double %0, %1
%8 = fsub double %2, %3
%9 = fsub double %4, %5
%10 = fmul double %8, %8
%11 = tail call double @llvm.fmuladd.f64(double %7, double %7, double %10)
%12 = tail call double @llvm.fmuladd.f64(double %9, double %9, double %11)
%13 = tail call double @sqrt(double %12)
ret double %13
}