void tricircumcenter3d(a, b, c, circumcenter, cond) double a[3];
double b[3];
double c[3];
double circumcenter[3];
double *cond;
{
  double xba, yba, zba, xca, yca, zca;
  double balength, calength;
  double xcrossbc, ycrossbc, zcrossbc;
  double denominator;
  double xcirca, ycirca, zcirca;
  double ta[2], tb[2], tc[2];
  xba = b[0] - a[0];
  yba = b[1] - a[1];
  zba = b[2] - a[2];
  xca = c[0] - a[0];
  yca = c[1] - a[1];
  zca = c[2] - a[2];
  balength = xba * xba + yba * yba + zba * zba;
  calength = xca * xca + yca * yca + zca * zca;
  ta[0] = b[1];
  ta[1] = b[2];
  tb[0] = c[1];
  tb[1] = c[2];
  tc[0] = a[1];
  tc[1] = a[2];
  xcrossbc = orient2d(ta, tb, tc);
  ta[0] = b[2];
  ta[1] = b[0];
  tb[0] = c[2];
  tb[1] = c[0];
  tc[0] = a[2];
  tc[1] = a[0];
  ycrossbc = orient2d(ta, tb, tc);
  ta[0] = b[0];
  ta[1] = b[1];
  tb[0] = c[0];
  tb[1] = c[1];
  tc[0] = a[0];
  tc[1] = a[1];
  zcrossbc = orient2d(ta, tb, tc);
  denominator =
      0.5 / (xcrossbc * xcrossbc + ycrossbc * ycrossbc + zcrossbc * zcrossbc);
  xcirca = ((balength * yca - calength * yba) * zcrossbc -
            (balength * zca - calength * zba) * ycrossbc) *
           denominator;
  ycirca = ((balength * zca - calength * zba) * xcrossbc -
            (balength * xca - calength * xba) * zcrossbc) *
           denominator;
  zcirca = ((balength * xca - calength * xba) * ycrossbc -
            (balength * yca - calength * yba) * xcrossbc) *
           denominator;
  circumcenter[0] = xcirca;
  circumcenter[1] = ycirca;
  circumcenter[2] = zcirca;
}


x86 assembly (clang, -O0):
<tricircumcenter3d>:
push   %rbp
mov    %rsp,%rbp
sub    $0xd0,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %rdx,-0x18(%rbp)
mov    %rcx,-0x20(%rbp)
mov    %r8,-0x28(%rbp)
mov    -0x10(%rbp),%rax
movsd  (%rax),%xmm0
mov    -0x8(%rbp),%rax
subsd  (%rax),%xmm0
movsd  %xmm0,-0x30(%rbp)
mov    -0x10(%rbp),%rax
movsd  0x8(%rax),%xmm0
mov    -0x8(%rbp),%rax
subsd  0x8(%rax),%xmm0
movsd  %xmm0,-0x38(%rbp)
mov    -0x10(%rbp),%rax
movsd  0x10(%rax),%xmm0
mov    -0x8(%rbp),%rax
subsd  0x10(%rax),%xmm0
movsd  %xmm0,-0x40(%rbp)
mov    -0x18(%rbp),%rax
movsd  (%rax),%xmm0
mov    -0x8(%rbp),%rax
subsd  (%rax),%xmm0
movsd  %xmm0,-0x48(%rbp)
mov    -0x18(%rbp),%rax
movsd  0x8(%rax),%xmm0
mov    -0x8(%rbp),%rax
subsd  0x8(%rax),%xmm0
movsd  %xmm0,-0x50(%rbp)
mov    -0x18(%rbp),%rax
movsd  0x10(%rax),%xmm0
mov    -0x8(%rbp),%rax
subsd  0x10(%rax),%xmm0
movsd  %xmm0,-0x58(%rbp)
movsd  -0x30(%rbp),%xmm1
movsd  -0x30(%rbp),%xmm2
movsd  -0x38(%rbp),%xmm0
mulsd  -0x38(%rbp),%xmm0
mulsd  %xmm2,%xmm1
addsd  %xmm0,%xmm1
movsd  -0x40(%rbp),%xmm0
movsd  -0x40(%rbp),%xmm2
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
movsd  %xmm0,-0x60(%rbp)
movsd  -0x48(%rbp),%xmm1
movsd  -0x48(%rbp),%xmm2
movsd  -0x50(%rbp),%xmm0
mulsd  -0x50(%rbp),%xmm0
mulsd  %xmm2,%xmm1
addsd  %xmm0,%xmm1
movsd  -0x58(%rbp),%xmm0
movsd  -0x58(%rbp),%xmm2
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
movsd  %xmm0,-0x68(%rbp)
mov    -0x10(%rbp),%rax
movsd  0x8(%rax),%xmm0
movsd  %xmm0,-0xb0(%rbp)
ff
mov    -0x10(%rbp),%rax
movsd  0x10(%rax),%xmm0
movsd  %xmm0,-0xa8(%rbp)
ff
mov    -0x18(%rbp),%rax
movsd  0x8(%rax),%xmm0
movsd  %xmm0,-0xc0(%rbp)
ff
mov    -0x18(%rbp),%rax
movsd  0x10(%rax),%xmm0
movsd  %xmm0,-0xb8(%rbp)
ff
mov    -0x8(%rbp),%rax
movsd  0x8(%rax),%xmm0
movsd  %xmm0,-0xd0(%rbp)
ff
mov    -0x8(%rbp),%rax
movsd  0x10(%rax),%xmm0
movsd  %xmm0,-0xc8(%rbp)
ff
lea    -0xb0(%rbp),%rdi
lea    -0xc0(%rbp),%rsi
lea    -0xd0(%rbp),%rdx
mov    $0x0,%al
call   1030 <orient2d@plt>
cvtsi2sd %eax,%xmm0
movsd  %xmm0,-0x70(%rbp)
mov    -0x10(%rbp),%rax
movsd  0x10(%rax),%xmm0
movsd  %xmm0,-0xb0(%rbp)
ff
mov    -0x10(%rbp),%rax
movsd  (%rax),%xmm0
movsd  %xmm0,-0xa8(%rbp)
ff
mov    -0x18(%rbp),%rax
movsd  0x10(%rax),%xmm0
movsd  %xmm0,-0xc0(%rbp)
ff
mov    -0x18(%rbp),%rax
movsd  (%rax),%xmm0
movsd  %xmm0,-0xb8(%rbp)
ff
mov    -0x8(%rbp),%rax
movsd  0x10(%rax),%xmm0
movsd  %xmm0,-0xd0(%rbp)
ff
mov    -0x8(%rbp),%rax
movsd  (%rax),%xmm0
movsd  %xmm0,-0xc8(%rbp)
ff
lea    -0xb0(%rbp),%rdi
lea    -0xc0(%rbp),%rsi
lea    -0xd0(%rbp),%rdx
mov    $0x0,%al
call   1030 <orient2d@plt>
cvtsi2sd %eax,%xmm0
movsd  %xmm0,-0x78(%rbp)
mov    -0x10(%rbp),%rax
movsd  (%rax),%xmm0
movsd  %xmm0,-0xb0(%rbp)
ff
mov    -0x10(%rbp),%rax
movsd  0x8(%rax),%xmm0
movsd  %xmm0,-0xa8(%rbp)
ff
mov    -0x18(%rbp),%rax
movsd  (%rax),%xmm0
movsd  %xmm0,-0xc0(%rbp)
ff
mov    -0x18(%rbp),%rax
movsd  0x8(%rax),%xmm0
movsd  %xmm0,-0xb8(%rbp)
ff
mov    -0x8(%rbp),%rax
movsd  (%rax),%xmm0
movsd  %xmm0,-0xd0(%rbp)
ff
mov    -0x8(%rbp),%rax
movsd  0x8(%rax),%xmm0
movsd  %xmm0,-0xc8(%rbp)
ff
lea    -0xb0(%rbp),%rdi
lea    -0xc0(%rbp),%rsi
lea    -0xd0(%rbp),%rdx
mov    $0x0,%al
call   1030 <orient2d@plt>
cvtsi2sd %eax,%xmm0
movsd  %xmm0,-0x80(%rbp)
movsd  -0x70(%rbp),%xmm0
movsd  -0x70(%rbp),%xmm2
movsd  -0x78(%rbp),%xmm1
mulsd  -0x78(%rbp),%xmm1
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
movsd  -0x80(%rbp),%xmm1
movsd  -0x80(%rbp),%xmm2
mulsd  %xmm2,%xmm1
addsd  %xmm0,%xmm1
movsd  0xc14(%rip),%xmm0
divsd  %xmm1,%xmm0
movsd  %xmm0,-0x88(%rbp)
ff
movsd  -0x60(%rbp),%xmm0
movsd  -0x50(%rbp),%xmm2
movsd  -0x68(%rbp),%xmm1
mulsd  -0x38(%rbp),%xmm1
movq   %xmm1,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm1
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
movsd  -0x80(%rbp),%xmm2
movsd  -0x60(%rbp),%xmm1
movsd  -0x58(%rbp),%xmm4
movsd  -0x68(%rbp),%xmm3
mulsd  -0x40(%rbp),%xmm3
movq   %xmm3,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm3
mulsd  %xmm4,%xmm1
addsd  %xmm3,%xmm1
mulsd  -0x78(%rbp),%xmm1
movq   %xmm1,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm1
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
mulsd  -0x88(%rbp),%xmm0
ff
movsd  %xmm0,-0x90(%rbp)
ff
movsd  -0x60(%rbp),%xmm0
movsd  -0x58(%rbp),%xmm2
movsd  -0x68(%rbp),%xmm1
mulsd  -0x40(%rbp),%xmm1
movq   %xmm1,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm1
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
movsd  -0x70(%rbp),%xmm2
movsd  -0x60(%rbp),%xmm1
movsd  -0x48(%rbp),%xmm4
movsd  -0x68(%rbp),%xmm3
mulsd  -0x30(%rbp),%xmm3
movq   %xmm3,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm3
mulsd  %xmm4,%xmm1
addsd  %xmm3,%xmm1
mulsd  -0x80(%rbp),%xmm1
movq   %xmm1,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm1
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
mulsd  -0x88(%rbp),%xmm0
ff
movsd  %xmm0,-0x98(%rbp)
ff
movsd  -0x60(%rbp),%xmm0
movsd  -0x48(%rbp),%xmm2
movsd  -0x68(%rbp),%xmm1
mulsd  -0x30(%rbp),%xmm1
movq   %xmm1,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm1
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
movsd  -0x78(%rbp),%xmm2
movsd  -0x60(%rbp),%xmm1
movsd  -0x50(%rbp),%xmm4
movsd  -0x68(%rbp),%xmm3
mulsd  -0x38(%rbp),%xmm3
movq   %xmm3,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm3
mulsd  %xmm4,%xmm1
addsd  %xmm3,%xmm1
mulsd  -0x70(%rbp),%xmm1
movq   %xmm1,%rax
movabs $0x8000000000000000,%rcx
xor    %rcx,%rax
movq   %rax,%xmm1
mulsd  %xmm2,%xmm0
addsd  %xmm1,%xmm0
mulsd  -0x88(%rbp),%xmm0
ff
movsd  %xmm0,-0xa0(%rbp)
ff
movsd  -0x90(%rbp),%xmm0
ff
mov    -0x20(%rbp),%rax
movsd  %xmm0,(%rax)
movsd  -0x98(%rbp),%xmm0
ff
mov    -0x20(%rbp),%rax
movsd  %xmm0,0x8(%rax)
movsd  -0xa0(%rbp),%xmm0
ff
mov    -0x20(%rbp),%rax
movsd  %xmm0,0x10(%rax)
add    $0xd0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<tricircumcenter3d>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
sub    $0xb8,%rsp
mov    %rcx,0x58(%rsp)
mov    %rdx,%r15
mov    %rsi,%rbx
mov    %rdi,%r12
movsd  (%rsi),%xmm0
movsd  (%rdi),%xmm1
subsd  %xmm1,%xmm0
movapd %xmm0,%xmm5
movsd  %xmm0,0x48(%rsp)
movupd 0x8(%rsi),%xmm2
movupd 0x8(%rdi),%xmm0
movsd  (%rdx),%xmm4
movupd 0x8(%rdx),%xmm3
movapd %xmm2,0x30(%rsp)
movapd %xmm2,%xmm6
subpd  %xmm0,%xmm6
movapd %xmm6,0xa0(%rsp)
subsd  %xmm1,%xmm4
movsd  %xmm4,0x50(%rsp)
movapd %xmm3,0x20(%rsp)
subpd  %xmm0,%xmm3
movapd %xmm3,0x90(%rsp)
movapd %xmm6,%xmm1
mulsd  %xmm6,%xmm1
movapd %xmm5,%xmm2
mulsd  %xmm5,%xmm2
addsd  %xmm1,%xmm2
movapd %xmm6,%xmm1
unpckhpd %xmm6,%xmm1
mulsd  %xmm1,%xmm1
addsd  %xmm2,%xmm1
movapd %xmm1,0x80(%rsp)
movapd %xmm3,%xmm1
mulsd  %xmm3,%xmm1
movapd %xmm4,%xmm2
mulsd  %xmm4,%xmm2
addsd  %xmm1,%xmm2
unpckhpd %xmm3,%xmm3
mulsd  %xmm3,%xmm3
addsd  %xmm2,%xmm3
movapd %xmm3,0x70(%rsp)
movapd %xmm0,0x10(%rsp)
lea    0x30(%rsp),%rbp
lea    0x20(%rsp),%r14
lea    0x10(%rsp),%r13
mov    %rbp,%rdi
mov    %r14,%rsi
mov    %r13,%rdx
xor    %eax,%eax
call   1030 <orient2d@plt>
mov    %eax,0xc(%rsp)
movsd  0x10(%rbx),%xmm0
movsd  %xmm0,0x30(%rsp)
movsd  (%rbx),%xmm0
movsd  %xmm0,0x38(%rsp)
movsd  0x10(%r15),%xmm0
movsd  %xmm0,0x20(%rsp)
movsd  (%r15),%xmm0
movsd  %xmm0,0x28(%rsp)
movsd  0x10(%r12),%xmm0
movsd  %xmm0,0x10(%rsp)
movsd  (%r12),%xmm0
movsd  %xmm0,0x18(%rsp)
mov    %rbp,%rdi
mov    %r14,%rsi
mov    %r13,%rdx
xor    %eax,%eax
call   1030 <orient2d@plt>
xorps  %xmm0,%xmm0
cvtsi2sd %eax,%xmm0
movapd %xmm0,0x60(%rsp)
movups (%rbx),%xmm0
movaps %xmm0,0x30(%rsp)
movups (%r15),%xmm0
movaps %xmm0,0x20(%rsp)
movups (%r12),%xmm0
movaps %xmm0,0x10(%rsp)
mov    %rbp,%rdi
mov    %r14,%rsi
mov    %r13,%rdx
xor    %eax,%eax
call   1030 <orient2d@plt>
movd   0xc(%rsp),%xmm0
movd   %eax,%xmm1
punpckldq %xmm0,%xmm1
cvtdq2pd %xmm1,%xmm0
movapd 0x60(%rsp),%xmm7
movapd %xmm7,%xmm8
mulsd  %xmm7,%xmm8
movapd %xmm0,%xmm2
unpckhpd %xmm0,%xmm2
movapd %xmm0,%xmm3
movsd  0x48(%rsp),%xmm5
movapd 0x70(%rsp),%xmm4
mulsd  %xmm4,%xmm5
unpcklpd %xmm4,%xmm4
mulpd  0xa0(%rsp),%xmm4
movapd %xmm4,%xmm1
movapd 0x80(%rsp),%xmm6
movapd %xmm6,%xmm4
unpcklpd %xmm6,%xmm4
mulpd  0x90(%rsp),%xmm4
subpd  %xmm1,%xmm4
mulsd  0x50(%rsp),%xmm6
subsd  %xmm5,%xmm6
movapd %xmm4,%xmm5
shufpd $0x1,%xmm6,%xmm5
mulsd  %xmm7,%xmm6
unpcklpd %xmm0,%xmm7
mulpd  %xmm4,%xmm0
mulsd  %xmm2,%xmm4
mulsd  %xmm2,%xmm2
addsd  %xmm8,%xmm2
mulsd  %xmm3,%xmm3
addsd  %xmm2,%xmm3
movsd  0xcc2(%rip),%xmm1
divsd  %xmm3,%xmm1
movapd %xmm7,%xmm2
mulpd  %xmm5,%xmm2
subpd  %xmm2,%xmm0
subsd  %xmm4,%xmm6
mulsd  %xmm1,%xmm6
unpcklpd %xmm1,%xmm1
mulpd  %xmm0,%xmm1
mov    0x58(%rsp),%rax
movupd %xmm1,(%rax)
movsd  %xmm6,0x10(%rax)
add    $0xb8,%rsp
pop    %rbx
pop    %r12
pop    %r13
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
define void @tricircumcenter3d(double* %0, double* %1, double* %2, double* %3, double* %4) {
%6 = alloca double*
%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
%17 = alloca double
%18 = alloca double
%19 = alloca double
%20 = alloca double
%21 = alloca double
%22 = alloca double
%23 = alloca double
%24 = alloca double
%25 = alloca double
%26 = alloca [2 x double]
%27 = alloca [2 x double]
%28 = alloca [2 x double]
store double* %0, double** %6
store double* %1, double** %7
store double* %2, double** %8
store double* %3, double** %9
store double* %4, double** %10
%29 = load double*, double** %7
%30 = getelementptr inbounds double, double* %29, i64 0
%31 = load double, double* %30
%32 = load double*, double** %6
%33 = getelementptr inbounds double, double* %32, i64 0
%34 = load double, double* %33
%35 = fsub double %31, %34
store double %35, double* %11
%36 = load double*, double** %7
%37 = getelementptr inbounds double, double* %36, i64 1
%38 = load double, double* %37
%39 = load double*, double** %6
%40 = getelementptr inbounds double, double* %39, i64 1
%41 = load double, double* %40
%42 = fsub double %38, %41
store double %42, double* %12
%43 = load double*, double** %7
%44 = getelementptr inbounds double, double* %43, i64 2
%45 = load double, double* %44
%46 = load double*, double** %6
%47 = getelementptr inbounds double, double* %46, i64 2
%48 = load double, double* %47
%49 = fsub double %45, %48
store double %49, double* %13
%50 = load double*, double** %8
%51 = getelementptr inbounds double, double* %50, i64 0
%52 = load double, double* %51
%53 = load double*, double** %6
%54 = getelementptr inbounds double, double* %53, i64 0
%55 = load double, double* %54
%56 = fsub double %52, %55
store double %56, double* %14
%57 = load double*, double** %8
%58 = getelementptr inbounds double, double* %57, i64 1
%59 = load double, double* %58
%60 = load double*, double** %6
%61 = getelementptr inbounds double, double* %60, i64 1
%62 = load double, double* %61
%63 = fsub double %59, %62
store double %63, double* %15
%64 = load double*, double** %8
%65 = getelementptr inbounds double, double* %64, i64 2
%66 = load double, double* %65
%67 = load double*, double** %6
%68 = getelementptr inbounds double, double* %67, i64 2
%69 = load double, double* %68
%70 = fsub double %66, %69
store double %70, double* %16
%71 = load double, double* %11
%72 = load double, double* %11
%73 = load double, double* %12
%74 = load double, double* %12
%75 = fmul double %73, %74
%76 = call double @llvm.fmuladd.f64(double %71, double %72, double %75)
%77 = load double, double* %13
%78 = load double, double* %13
%79 = call double @llvm.fmuladd.f64(double %77, double %78, double %76)
store double %79, double* %17
%80 = load double, double* %14
%81 = load double, double* %14
%82 = load double, double* %15
%83 = load double, double* %15
%84 = fmul double %82, %83
%85 = call double @llvm.fmuladd.f64(double %80, double %81, double %84)
%86 = load double, double* %16
%87 = load double, double* %16
%88 = call double @llvm.fmuladd.f64(double %86, double %87, double %85)
store double %88, double* %18
%89 = load double*, double** %7
%90 = getelementptr inbounds double, double* %89, i64 1
%91 = load double, double* %90
%92 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 0
store double %91, double* %92
%93 = load double*, double** %7
%94 = getelementptr inbounds double, double* %93, i64 2
%95 = load double, double* %94
%96 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 1
store double %95, double* %96
%97 = load double*, double** %8
%98 = getelementptr inbounds double, double* %97, i64 1
%99 = load double, double* %98
%100 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 0
store double %99, double* %100
%101 = load double*, double** %8
%102 = getelementptr inbounds double, double* %101, i64 2
%103 = load double, double* %102
%104 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 1
store double %103, double* %104
%105 = load double*, double** %6
%106 = getelementptr inbounds double, double* %105, i64 1
%107 = load double, double* %106
%108 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 0
store double %107, double* %108
%109 = load double*, double** %6
%110 = getelementptr inbounds double, double* %109, i64 2
%111 = load double, double* %110
%112 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 1
store double %111, double* %112
%113 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 0
%114 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 0
%115 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 0
%116 = call i32 (double*, double*, double*, ...) bitcast (i32 (...)* @orient2d to i32 (double*, double*, double*, ...)*)(double* %113, double* %114, double* %115)
%117 = sitofp i32 %116 to double
store double %117, double* %19
%118 = load double*, double** %7
%119 = getelementptr inbounds double, double* %118, i64 2
%120 = load double, double* %119
%121 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 0
store double %120, double* %121
%122 = load double*, double** %7
%123 = getelementptr inbounds double, double* %122, i64 0
%124 = load double, double* %123
%125 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 1
store double %124, double* %125
%126 = load double*, double** %8
%127 = getelementptr inbounds double, double* %126, i64 2
%128 = load double, double* %127
%129 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 0
store double %128, double* %129
%130 = load double*, double** %8
%131 = getelementptr inbounds double, double* %130, i64 0
%132 = load double, double* %131
%133 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 1
store double %132, double* %133
%134 = load double*, double** %6
%135 = getelementptr inbounds double, double* %134, i64 2
%136 = load double, double* %135
%137 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 0
store double %136, double* %137
%138 = load double*, double** %6
%139 = getelementptr inbounds double, double* %138, i64 0
%140 = load double, double* %139
%141 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 1
store double %140, double* %141
%142 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 0
%143 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 0
%144 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 0
%145 = call i32 (double*, double*, double*, ...) bitcast (i32 (...)* @orient2d to i32 (double*, double*, double*, ...)*)(double* %142, double* %143, double* %144)
%146 = sitofp i32 %145 to double
store double %146, double* %20
%147 = load double*, double** %7
%148 = getelementptr inbounds double, double* %147, i64 0
%149 = load double, double* %148
%150 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 0
store double %149, double* %150
%151 = load double*, double** %7
%152 = getelementptr inbounds double, double* %151, i64 1
%153 = load double, double* %152
%154 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 1
store double %153, double* %154
%155 = load double*, double** %8
%156 = getelementptr inbounds double, double* %155, i64 0
%157 = load double, double* %156
%158 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 0
store double %157, double* %158
%159 = load double*, double** %8
%160 = getelementptr inbounds double, double* %159, i64 1
%161 = load double, double* %160
%162 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 1
store double %161, double* %162
%163 = load double*, double** %6
%164 = getelementptr inbounds double, double* %163, i64 0
%165 = load double, double* %164
%166 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 0
store double %165, double* %166
%167 = load double*, double** %6
%168 = getelementptr inbounds double, double* %167, i64 1
%169 = load double, double* %168
%170 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 1
store double %169, double* %170
%171 = getelementptr inbounds [2 x double], [2 x double]* %26, i64 0, i64 0
%172 = getelementptr inbounds [2 x double], [2 x double]* %27, i64 0, i64 0
%173 = getelementptr inbounds [2 x double], [2 x double]* %28, i64 0, i64 0
%174 = call i32 (double*, double*, double*, ...) bitcast (i32 (...)* @orient2d to i32 (double*, double*, double*, ...)*)(double* %171, double* %172, double* %173)
%175 = sitofp i32 %174 to double
store double %175, double* %21
%176 = load double, double* %19
%177 = load double, double* %19
%178 = load double, double* %20
%179 = load double, double* %20
%180 = fmul double %178, %179
%181 = call double @llvm.fmuladd.f64(double %176, double %177, double %180)
%182 = load double, double* %21
%183 = load double, double* %21
%184 = call double @llvm.fmuladd.f64(double %182, double %183, double %181)
%185 = fdiv double 5.000000e-01, %184
store double %185, double* %22
%186 = load double, double* %17
%187 = load double, double* %15
%188 = load double, double* %18
%189 = load double, double* %12
%190 = fmul double %188, %189
%191 = fneg double %190
%192 = call double @llvm.fmuladd.f64(double %186, double %187, double %191)
%193 = load double, double* %21
%194 = load double, double* %17
%195 = load double, double* %16
%196 = load double, double* %18
%197 = load double, double* %13
%198 = fmul double %196, %197
%199 = fneg double %198
%200 = call double @llvm.fmuladd.f64(double %194, double %195, double %199)
%201 = load double, double* %20
%202 = fmul double %200, %201
%203 = fneg double %202
%204 = call double @llvm.fmuladd.f64(double %192, double %193, double %203)
%205 = load double, double* %22
%206 = fmul double %204, %205
store double %206, double* %23
%207 = load double, double* %17
%208 = load double, double* %16
%209 = load double, double* %18
%210 = load double, double* %13
%211 = fmul double %209, %210
%212 = fneg double %211
%213 = call double @llvm.fmuladd.f64(double %207, double %208, double %212)
%214 = load double, double* %19
%215 = load double, double* %17
%216 = load double, double* %14
%217 = load double, double* %18
%218 = load double, double* %11
%219 = fmul double %217, %218
%220 = fneg double %219
%221 = call double @llvm.fmuladd.f64(double %215, double %216, double %220)
%222 = load double, double* %21
%223 = fmul double %221, %222
%224 = fneg double %223
%225 = call double @llvm.fmuladd.f64(double %213, double %214, double %224)
%226 = load double, double* %22
%227 = fmul double %225, %226
store double %227, double* %24
%228 = load double, double* %17
%229 = load double, double* %14
%230 = load double, double* %18
%231 = load double, double* %11
%232 = fmul double %230, %231
%233 = fneg double %232
%234 = call double @llvm.fmuladd.f64(double %228, double %229, double %233)
%235 = load double, double* %20
%236 = load double, double* %17
%237 = load double, double* %15
%238 = load double, double* %18
%239 = load double, double* %12
%240 = fmul double %238, %239
%241 = fneg double %240
%242 = call double @llvm.fmuladd.f64(double %236, double %237, double %241)
%243 = load double, double* %19
%244 = fmul double %242, %243
%245 = fneg double %244
%246 = call double @llvm.fmuladd.f64(double %234, double %235, double %245)
%247 = load double, double* %22
%248 = fmul double %246, %247
store double %248, double* %25
%249 = load double, double* %23
%250 = load double*, double** %9
%251 = getelementptr inbounds double, double* %250, i64 0
store double %249, double* %251
%252 = load double, double* %24
%253 = load double*, double** %9
%254 = getelementptr inbounds double, double* %253, i64 1
store double %252, double* %254
%255 = load double, double* %25
%256 = load double*, double** %9
%257 = getelementptr inbounds double, double* %256, i64 2
store double %255, double* %257
ret void
}

LLVM IR (-O2):
define void @tricircumcenter3d(double* nocapture %0, double* nocapture %1, double* nocapture %2, double* nocapture writeonly %3, double* nocapture readnone %4) {
%6 = alloca <2 x double>
%7 = alloca <2 x double>
%8 = alloca <2 x double>
%9 = bitcast <2 x double>* %6 to i8*
%10 = bitcast <2 x double>* %7 to i8*
%11 = bitcast <2 x double>* %8 to i8*
%12 = load double, double* %1
%13 = load double, double* %0
%14 = fsub double %12, %13
%15 = getelementptr inbounds double, double* %1, i64 1
%16 = getelementptr inbounds double, double* %0, i64 1
%17 = getelementptr inbounds double, double* %1, i64 2
%18 = bitcast double* %15 to <2 x double>*
%19 = load <2 x double>, <2 x double>* %18
%20 = getelementptr inbounds double, double* %0, i64 2
%21 = bitcast double* %16 to <2 x double>*
%22 = load <2 x double>, <2 x double>* %21
%23 = fsub <2 x double> %19, %22
%24 = load double, double* %2
%25 = fsub double %24, %13
%26 = getelementptr inbounds double, double* %2, i64 1
%27 = getelementptr inbounds double, double* %2, i64 2
%28 = bitcast double* %26 to <2 x double>*
%29 = load <2 x double>, <2 x double>* %28
%30 = fsub <2 x double> %29, %22
%31 = fmul <2 x double> %23, %23
%32 = extractelement <2 x double> %31, i64 0
%33 = tail call double @llvm.fmuladd.f64(double %14, double %14, double %32)
%34 = extractelement <2 x double> %23, i64 1
%35 = tail call double @llvm.fmuladd.f64(double %34, double %34, double %33)
%36 = fmul <2 x double> %30, %30
%37 = extractelement <2 x double> %36, i64 0
%38 = tail call double @llvm.fmuladd.f64(double %25, double %25, double %37)
%39 = extractelement <2 x double> %30, i64 1
%40 = tail call double @llvm.fmuladd.f64(double %39, double %39, double %38)
%41 = getelementptr inbounds <2 x double>, <2 x double>* %6, i64 0, i64 0
%42 = getelementptr inbounds <2 x double>, <2 x double>* %6, i64 0, i64 1
store <2 x double> %19, <2 x double>* %6
%43 = getelementptr inbounds <2 x double>, <2 x double>* %7, i64 0, i64 0
%44 = getelementptr inbounds <2 x double>, <2 x double>* %7, i64 0, i64 1
store <2 x double> %29, <2 x double>* %7
%45 = getelementptr inbounds <2 x double>, <2 x double>* %8, i64 0, i64 0
%46 = getelementptr inbounds <2 x double>, <2 x double>* %8, i64 0, i64 1
store <2 x double> %22, <2 x double>* %8
%47 = call i32 (double*, double*, double*, ...) bitcast (i32 (...)* @orient2d to i32 (double*, double*, double*, ...)*)(double* %41, double* %43, double* %45)
%48 = load double, double* %17
store double %48, double* %41
%49 = load double, double* %1
store double %49, double* %42
%50 = load double, double* %27
store double %50, double* %43
%51 = load double, double* %2
store double %51, double* %44
%52 = load double, double* %20
store double %52, double* %45
%53 = load double, double* %0
store double %53, double* %46
%54 = call i32 (double*, double*, double*, ...) bitcast (i32 (...)* @orient2d to i32 (double*, double*, double*, ...)*)(double* %41, double* %43, double* %45)
%55 = sitofp i32 %54 to double
%56 = bitcast double* %1 to <2 x double>*
%57 = load <2 x double>, <2 x double>* %56
store <2 x double> %57, <2 x double>* %6
%58 = bitcast double* %2 to <2 x double>*
%59 = load <2 x double>, <2 x double>* %58
store <2 x double> %59, <2 x double>* %7
%60 = bitcast double* %0 to <2 x double>*
%61 = load <2 x double>, <2 x double>* %60
store <2 x double> %61, <2 x double>* %8
%62 = call i32 (double*, double*, double*, ...) bitcast (i32 (...)* @orient2d to i32 (double*, double*, double*, ...)*)(double* %41, double* %43, double* %45)
%63 = insertelement <2 x i32> poison, i32 %62, i64 0
%64 = insertelement <2 x i32> %63, i32 %47, i64 1
%65 = sitofp <2 x i32> %64 to <2 x double>
%66 = fmul double %55, %55
%67 = extractelement <2 x double> %65, i64 1
%68 = call double @llvm.fmuladd.f64(double %67, double %67, double %66)
%69 = extractelement <2 x double> %65, i64 0
%70 = call double @llvm.fmuladd.f64(double %69, double %69, double %68)
%71 = fdiv double 5.000000e-01, %70
%72 = fneg double %40
%73 = insertelement <2 x double> poison, double %72, i64 0
%74 = shufflevector <2 x double> %73, <2 x double> poison, <2 x i32> zeroinitializer
%75 = fmul <2 x double> %23, %74
%76 = insertelement <2 x double> poison, double %35, i64 0
%77 = shufflevector <2 x double> %76, <2 x double> poison, <2 x i32> zeroinitializer
%78 = call <2 x double> @llvm.fmuladd.v2f64(<2 x double> %77, <2 x double> %30, <2 x double> %75)
%79 = fmul double %14, %72
%80 = call double @llvm.fmuladd.f64(double %35, double %25, double %79)
%81 = extractelement <2 x double> %78, i64 1
%82 = insertelement <2 x double> poison, double %81, i64 0
%83 = insertelement <2 x double> %82, double %80, i64 1
%84 = fneg <2 x double> %83
%85 = insertelement <2 x double> poison, double %55, i64 0
%86 = shufflevector <2 x double> %85, <2 x double> %65, <2 x i32> <i32 0, i32 2>
%87 = fmul <2 x double> %86, %84
%88 = call <2 x double> @llvm.fmuladd.v2f64(<2 x double> %78, <2 x double> %65, <2 x double> %87)
%89 = insertelement <2 x double> poison, double %71, i64 0
%90 = shufflevector <2 x double> %89, <2 x double> poison, <2 x i32> zeroinitializer
%91 = fmul <2 x double> %88, %90
%92 = extractelement <2 x double> %78, i64 0
%93 = fneg double %92
%94 = fmul double %67, %93
%95 = call double @llvm.fmuladd.f64(double %80, double %55, double %94)
%96 = fmul double %95, %71
%97 = bitcast double* %3 to <2 x double>*
store <2 x double> %91, <2 x double>* %97
%98 = getelementptr inbounds double, double* %3, i64 2
store double %96, double* %98
ret void
}