#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 dd_two_sum(double const, double const, double *);
int /*<<< orphan*/ od_fast_renorm(double, double, double, double, double,
                                  double, double, double, double, double *,
                                  double *, double *, double *, double *,
                                  double *, double *, double *);
void od_add(const double *a, const double *b, double *c) {
  double f0, f1, f2, f3, f4, f5, f6, f7, f8, e;
  f8 = 0.0;
  f7 = dd_two_sum(a[7], b[7], &e);
  f8 += e;
  f6 = dd_two_sum(a[6], b[6], &e);
  f7 = dd_two_sum(f7, e, &e);
  f8 += e;
  f5 = dd_two_sum(a[5], b[5], &e);
  f6 = dd_two_sum(f6, e, &e);
  f7 = dd_two_sum(f7, e, &e);
  f8 += e;
  f4 = dd_two_sum(a[4], b[4], &e);
  f5 = dd_two_sum(f5, e, &e);
  f6 = dd_two_sum(f6, e, &e);
  f7 = dd_two_sum(f7, e, &e);
  f8 += e;
  f3 = dd_two_sum(a[3], b[3], &e);
  f4 = dd_two_sum(f4, e, &e);
  f5 = dd_two_sum(f5, e, &e);
  f6 = dd_two_sum(f6, e, &e);
  f7 = dd_two_sum(f7, e, &e);
  f8 += e;
  f2 = dd_two_sum(a[2], b[2], &e);
  f3 = dd_two_sum(f3, e, &e);
  f4 = dd_two_sum(f4, e, &e);
  f5 = dd_two_sum(f5, e, &e);
  f6 = dd_two_sum(f6, e, &e);
  f7 = dd_two_sum(f7, e, &e);
  f8 += e;
  f1 = dd_two_sum(a[1], b[1], &e);
  f2 = dd_two_sum(f2, e, &e);
  f3 = dd_two_sum(f3, e, &e);
  f4 = dd_two_sum(f4, e, &e);
  f5 = dd_two_sum(f5, e, &e);
  f6 = dd_two_sum(f6, e, &e);
  f7 = dd_two_sum(f7, e, &e);
  f8 += e;
  f0 = dd_two_sum(a[0], b[0], &e);
  f1 = dd_two_sum(f1, e, &e);
  f2 = dd_two_sum(f2, e, &e);
  f3 = dd_two_sum(f3, e, &e);
  f4 = dd_two_sum(f4, e, &e);
  f5 = dd_two_sum(f5, e, &e);
  f6 = dd_two_sum(f6, e, &e);
  f7 = dd_two_sum(f7, e, &e);
  f8 += e;
  od_fast_renorm(f0, f1, f2, f3, f4, f5, f6, f7, f8, &c[0], &c[1], &c[2], &c[3],
                 &c[4], &c[5], &c[6], &c[7]);
}


x86 assembly (clang, -O0):
<od_add>:
push   %rbp
mov    %rsp,%rbp
sub    $0x80,%rsp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    %rdx,-0x18(%rbp)
xorps  %xmm0,%xmm0
movsd  %xmm0,-0x60(%rbp)
mov    -0x8(%rbp),%rax
movsd  0x38(%rax),%xmm0
mov    -0x10(%rbp),%rax
movsd  0x38(%rax),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x58(%rbp)
movsd  -0x68(%rbp),%xmm0
addsd  -0x60(%rbp),%xmm0
movsd  %xmm0,-0x60(%rbp)
mov    -0x8(%rbp),%rax
movsd  0x30(%rax),%xmm0
mov    -0x10(%rbp),%rax
movsd  0x30(%rax),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x50(%rbp)
movsd  -0x58(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x58(%rbp)
movsd  -0x68(%rbp),%xmm0
addsd  -0x60(%rbp),%xmm0
movsd  %xmm0,-0x60(%rbp)
mov    -0x8(%rbp),%rax
movsd  0x28(%rax),%xmm0
mov    -0x10(%rbp),%rax
movsd  0x28(%rax),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x48(%rbp)
movsd  -0x50(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x50(%rbp)
movsd  -0x58(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x58(%rbp)
movsd  -0x68(%rbp),%xmm0
addsd  -0x60(%rbp),%xmm0
movsd  %xmm0,-0x60(%rbp)
mov    -0x8(%rbp),%rax
movsd  0x20(%rax),%xmm0
mov    -0x10(%rbp),%rax
movsd  0x20(%rax),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x40(%rbp)
movsd  -0x48(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x48(%rbp)
movsd  -0x50(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x50(%rbp)
movsd  -0x58(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x58(%rbp)
movsd  -0x68(%rbp),%xmm0
addsd  -0x60(%rbp),%xmm0
movsd  %xmm0,-0x60(%rbp)
mov    -0x8(%rbp),%rax
movsd  0x18(%rax),%xmm0
mov    -0x10(%rbp),%rax
movsd  0x18(%rax),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x38(%rbp)
movsd  -0x40(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x40(%rbp)
movsd  -0x48(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x48(%rbp)
movsd  -0x50(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x50(%rbp)
movsd  -0x58(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x58(%rbp)
movsd  -0x68(%rbp),%xmm0
addsd  -0x60(%rbp),%xmm0
movsd  %xmm0,-0x60(%rbp)
mov    -0x8(%rbp),%rax
movsd  0x10(%rax),%xmm0
mov    -0x10(%rbp),%rax
movsd  0x10(%rax),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x30(%rbp)
movsd  -0x38(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x38(%rbp)
movsd  -0x40(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x40(%rbp)
movsd  -0x48(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x48(%rbp)
movsd  -0x50(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x50(%rbp)
movsd  -0x58(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x58(%rbp)
movsd  -0x68(%rbp),%xmm0
addsd  -0x60(%rbp),%xmm0
movsd  %xmm0,-0x60(%rbp)
mov    -0x8(%rbp),%rax
movsd  0x8(%rax),%xmm0
mov    -0x10(%rbp),%rax
movsd  0x8(%rax),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x28(%rbp)
movsd  -0x30(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x30(%rbp)
movsd  -0x38(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x38(%rbp)
movsd  -0x40(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x40(%rbp)
movsd  -0x48(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x48(%rbp)
movsd  -0x50(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x50(%rbp)
movsd  -0x58(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x58(%rbp)
movsd  -0x68(%rbp),%xmm0
addsd  -0x60(%rbp),%xmm0
movsd  %xmm0,-0x60(%rbp)
mov    -0x8(%rbp),%rax
movsd  (%rax),%xmm0
mov    -0x10(%rbp),%rax
movsd  (%rax),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x20(%rbp)
movsd  -0x28(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x28(%rbp)
movsd  -0x30(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x30(%rbp)
movsd  -0x38(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x38(%rbp)
movsd  -0x40(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x40(%rbp)
movsd  -0x48(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x48(%rbp)
movsd  -0x50(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x50(%rbp)
movsd  -0x58(%rbp),%xmm0
movsd  -0x68(%rbp),%xmm1
lea    -0x68(%rbp),%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,-0x58(%rbp)
movsd  -0x68(%rbp),%xmm0
addsd  -0x60(%rbp),%xmm0
movsd  %xmm0,-0x60(%rbp)
movsd  -0x20(%rbp),%xmm0
movsd  -0x28(%rbp),%xmm1
movsd  -0x30(%rbp),%xmm2
movsd  -0x38(%rbp),%xmm3
movsd  -0x40(%rbp),%xmm4
movsd  -0x48(%rbp),%xmm5
movsd  -0x50(%rbp),%xmm6
movsd  -0x58(%rbp),%xmm7
movsd  -0x60(%rbp),%xmm8
mov    -0x18(%rbp),%rdi
mov    -0x18(%rbp),%rsi
add    $0x8,%rsi
mov    -0x18(%rbp),%rdx
add    $0x10,%rdx
mov    -0x18(%rbp),%rcx
add    $0x18,%rcx
mov    -0x18(%rbp),%r8
add    $0x20,%r8
mov    -0x18(%rbp),%r9
add    $0x28,%r9
mov    -0x18(%rbp),%r10
add    $0x30,%r10
mov    -0x18(%rbp),%rax
add    $0x38,%rax
movsd  %xmm8,(%rsp)
mov    %r10,0x8(%rsp)
mov    %rax,0x10(%rsp)
call   1030 <od_fast_renorm@plt>
add    $0x80,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<od_add>:
push   %r15
push   %r14
push   %r12
push   %rbx
sub    $0x68,%rsp
mov    %rdx,%r14
mov    %rsi,%r15
mov    %rdi,%r12
movsd  0x38(%rdi),%xmm0
movsd  0x38(%rsi),%xmm1
lea    0x18(%rsp),%rbx
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x38(%rsp)
xorpd  %xmm0,%xmm0
addsd  0x18(%rsp),%xmm0
movsd  %xmm0,0x20(%rsp)
movsd  0x30(%r12),%xmm0
movsd  0x30(%r15),%xmm1
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x60(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x38(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x30(%rsp)
movsd  0x20(%rsp),%xmm0
addsd  0x18(%rsp),%xmm0
movsd  %xmm0,0x20(%rsp)
movsd  0x28(%r12),%xmm0
movsd  0x28(%r15),%xmm1
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x38(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x60(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x58(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x30(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x28(%rsp)
movsd  0x20(%rsp),%xmm0
addsd  0x18(%rsp),%xmm0
movsd  %xmm0,0x20(%rsp)
movsd  0x20(%r12),%xmm0
movsd  0x20(%r15),%xmm1
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x60(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x38(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x30(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x58(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x50(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x28(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x40(%rsp)
movsd  0x20(%rsp),%xmm0
addsd  0x18(%rsp),%xmm0
movsd  %xmm0,0x20(%rsp)
movsd  0x18(%r12),%xmm0
movsd  0x18(%r15),%xmm1
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x38(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x60(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x58(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x30(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x28(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x50(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x48(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x40(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x40(%rsp)
movsd  0x20(%rsp),%xmm0
addsd  0x18(%rsp),%xmm0
movsd  %xmm0,0x20(%rsp)
movsd  0x10(%r12),%xmm0
movsd  0x10(%r15),%xmm1
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x60(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x38(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x30(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x58(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x50(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x28(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x28(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x48(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x48(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x40(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x40(%rsp)
movsd  0x20(%rsp),%xmm0
addsd  0x18(%rsp),%xmm0
movsd  %xmm0,0x20(%rsp)
movsd  0x8(%r12),%xmm0
movsd  0x8(%r15),%xmm1
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x38(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x60(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x58(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x30(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x30(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x50(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x50(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x28(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x28(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x48(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x48(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x40(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x40(%rsp)
movsd  0x20(%rsp),%xmm0
addsd  0x18(%rsp),%xmm0
movsd  %xmm0,0x20(%rsp)
movsd  (%r12),%xmm0
movsd  (%r15),%xmm1
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x60(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x38(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x38(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x58(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x58(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x30(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x30(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x50(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x50(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x28(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x28(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x48(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  %xmm0,0x48(%rsp)
movsd  0x18(%rsp),%xmm1
movsd  0x40(%rsp),%xmm0
mov    %rbx,%rdi
call   1040 <dd_two_sum@plt>
movsd  0x20(%rsp),%xmm1
addsd  0x18(%rsp),%xmm1
movaps %xmm0,%xmm7
lea    0x8(%r14),%rsi
lea    0x10(%r14),%rdx
lea    0x18(%r14),%rcx
lea    0x20(%r14),%r8
lea    0x28(%r14),%r9
lea    0x30(%r14),%rax
lea    0x38(%r14),%rdi
mov    %rdi,0x10(%rsp)
mov    %rax,0x8(%rsp)
movsd  %xmm1,(%rsp)
movsd  0x60(%rsp),%xmm0
movsd  0x38(%rsp),%xmm1
movsd  0x58(%rsp),%xmm2
movsd  0x30(%rsp),%xmm3
movsd  0x50(%rsp),%xmm4
movsd  0x28(%rsp),%xmm5
movsd  0x48(%rsp),%xmm6
mov    %r14,%rdi
call   1030 <od_fast_renorm@plt>
add    $0x68,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
define void @od_add(double* %0, double* %1, double* %2) {
%4 = alloca double*
%5 = alloca double*
%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
store double* %0, double** %4
store double* %1, double** %5
store double* %2, double** %6
store double 0.000000e+00, double* %15
%17 = load double*, double** %4
%18 = getelementptr inbounds double, double* %17, i64 7
%19 = load double, double* %18
%20 = load double*, double** %5
%21 = getelementptr inbounds double, double* %20, i64 7
%22 = load double, double* %21
%23 = call double @dd_two_sum(double %19, double %22, double* %16)
store double %23, double* %14
%24 = load double, double* %16
%25 = load double, double* %15
%26 = fadd double %25, %24
store double %26, double* %15
%27 = load double*, double** %4
%28 = getelementptr inbounds double, double* %27, i64 6
%29 = load double, double* %28
%30 = load double*, double** %5
%31 = getelementptr inbounds double, double* %30, i64 6
%32 = load double, double* %31
%33 = call double @dd_two_sum(double %29, double %32, double* %16)
store double %33, double* %13
%34 = load double, double* %14
%35 = load double, double* %16
%36 = call double @dd_two_sum(double %34, double %35, double* %16)
store double %36, double* %14
%37 = load double, double* %16
%38 = load double, double* %15
%39 = fadd double %38, %37
store double %39, double* %15
%40 = load double*, double** %4
%41 = getelementptr inbounds double, double* %40, i64 5
%42 = load double, double* %41
%43 = load double*, double** %5
%44 = getelementptr inbounds double, double* %43, i64 5
%45 = load double, double* %44
%46 = call double @dd_two_sum(double %42, double %45, double* %16)
store double %46, double* %12
%47 = load double, double* %13
%48 = load double, double* %16
%49 = call double @dd_two_sum(double %47, double %48, double* %16)
store double %49, double* %13
%50 = load double, double* %14
%51 = load double, double* %16
%52 = call double @dd_two_sum(double %50, double %51, double* %16)
store double %52, double* %14
%53 = load double, double* %16
%54 = load double, double* %15
%55 = fadd double %54, %53
store double %55, double* %15
%56 = load double*, double** %4
%57 = getelementptr inbounds double, double* %56, i64 4
%58 = load double, double* %57
%59 = load double*, double** %5
%60 = getelementptr inbounds double, double* %59, i64 4
%61 = load double, double* %60
%62 = call double @dd_two_sum(double %58, double %61, double* %16)
store double %62, double* %11
%63 = load double, double* %12
%64 = load double, double* %16
%65 = call double @dd_two_sum(double %63, double %64, double* %16)
store double %65, double* %12
%66 = load double, double* %13
%67 = load double, double* %16
%68 = call double @dd_two_sum(double %66, double %67, double* %16)
store double %68, double* %13
%69 = load double, double* %14
%70 = load double, double* %16
%71 = call double @dd_two_sum(double %69, double %70, double* %16)
store double %71, double* %14
%72 = load double, double* %16
%73 = load double, double* %15
%74 = fadd double %73, %72
store double %74, double* %15
%75 = load double*, double** %4
%76 = getelementptr inbounds double, double* %75, i64 3
%77 = load double, double* %76
%78 = load double*, double** %5
%79 = getelementptr inbounds double, double* %78, i64 3
%80 = load double, double* %79
%81 = call double @dd_two_sum(double %77, double %80, double* %16)
store double %81, double* %10
%82 = load double, double* %11
%83 = load double, double* %16
%84 = call double @dd_two_sum(double %82, double %83, double* %16)
store double %84, double* %11
%85 = load double, double* %12
%86 = load double, double* %16
%87 = call double @dd_two_sum(double %85, double %86, double* %16)
store double %87, double* %12
%88 = load double, double* %13
%89 = load double, double* %16
%90 = call double @dd_two_sum(double %88, double %89, double* %16)
store double %90, double* %13
%91 = load double, double* %14
%92 = load double, double* %16
%93 = call double @dd_two_sum(double %91, double %92, double* %16)
store double %93, double* %14
%94 = load double, double* %16
%95 = load double, double* %15
%96 = fadd double %95, %94
store double %96, double* %15
%97 = load double*, double** %4
%98 = getelementptr inbounds double, double* %97, i64 2
%99 = load double, double* %98
%100 = load double*, double** %5
%101 = getelementptr inbounds double, double* %100, i64 2
%102 = load double, double* %101
%103 = call double @dd_two_sum(double %99, double %102, double* %16)
store double %103, double* %9
%104 = load double, double* %10
%105 = load double, double* %16
%106 = call double @dd_two_sum(double %104, double %105, double* %16)
store double %106, double* %10
%107 = load double, double* %11
%108 = load double, double* %16
%109 = call double @dd_two_sum(double %107, double %108, double* %16)
store double %109, double* %11
%110 = load double, double* %12
%111 = load double, double* %16
%112 = call double @dd_two_sum(double %110, double %111, double* %16)
store double %112, double* %12
%113 = load double, double* %13
%114 = load double, double* %16
%115 = call double @dd_two_sum(double %113, double %114, double* %16)
store double %115, double* %13
%116 = load double, double* %14
%117 = load double, double* %16
%118 = call double @dd_two_sum(double %116, double %117, double* %16)
store double %118, double* %14
%119 = load double, double* %16
%120 = load double, double* %15
%121 = fadd double %120, %119
store double %121, double* %15
%122 = load double*, double** %4
%123 = getelementptr inbounds double, double* %122, i64 1
%124 = load double, double* %123
%125 = load double*, double** %5
%126 = getelementptr inbounds double, double* %125, i64 1
%127 = load double, double* %126
%128 = call double @dd_two_sum(double %124, double %127, double* %16)
store double %128, double* %8
%129 = load double, double* %9
%130 = load double, double* %16
%131 = call double @dd_two_sum(double %129, double %130, double* %16)
store double %131, double* %9
%132 = load double, double* %10
%133 = load double, double* %16
%134 = call double @dd_two_sum(double %132, double %133, double* %16)
store double %134, double* %10
%135 = load double, double* %11
%136 = load double, double* %16
%137 = call double @dd_two_sum(double %135, double %136, double* %16)
store double %137, double* %11
%138 = load double, double* %12
%139 = load double, double* %16
%140 = call double @dd_two_sum(double %138, double %139, double* %16)
store double %140, double* %12
%141 = load double, double* %13
%142 = load double, double* %16
%143 = call double @dd_two_sum(double %141, double %142, double* %16)
store double %143, double* %13
%144 = load double, double* %14
%145 = load double, double* %16
%146 = call double @dd_two_sum(double %144, double %145, double* %16)
store double %146, double* %14
%147 = load double, double* %16
%148 = load double, double* %15
%149 = fadd double %148, %147
store double %149, double* %15
%150 = load double*, double** %4
%151 = getelementptr inbounds double, double* %150, i64 0
%152 = load double, double* %151
%153 = load double*, double** %5
%154 = getelementptr inbounds double, double* %153, i64 0
%155 = load double, double* %154
%156 = call double @dd_two_sum(double %152, double %155, double* %16)
store double %156, double* %7
%157 = load double, double* %8
%158 = load double, double* %16
%159 = call double @dd_two_sum(double %157, double %158, double* %16)
store double %159, double* %8
%160 = load double, double* %9
%161 = load double, double* %16
%162 = call double @dd_two_sum(double %160, double %161, double* %16)
store double %162, double* %9
%163 = load double, double* %10
%164 = load double, double* %16
%165 = call double @dd_two_sum(double %163, double %164, double* %16)
store double %165, double* %10
%166 = load double, double* %11
%167 = load double, double* %16
%168 = call double @dd_two_sum(double %166, double %167, double* %16)
store double %168, double* %11
%169 = load double, double* %12
%170 = load double, double* %16
%171 = call double @dd_two_sum(double %169, double %170, double* %16)
store double %171, double* %12
%172 = load double, double* %13
%173 = load double, double* %16
%174 = call double @dd_two_sum(double %172, double %173, double* %16)
store double %174, double* %13
%175 = load double, double* %14
%176 = load double, double* %16
%177 = call double @dd_two_sum(double %175, double %176, double* %16)
store double %177, double* %14
%178 = load double, double* %16
%179 = load double, double* %15
%180 = fadd double %179, %178
store double %180, double* %15
%181 = load double, double* %7
%182 = load double, double* %8
%183 = load double, double* %9
%184 = load double, double* %10
%185 = load double, double* %11
%186 = load double, double* %12
%187 = load double, double* %13
%188 = load double, double* %14
%189 = load double, double* %15
%190 = load double*, double** %6
%191 = getelementptr inbounds double, double* %190, i64 0
%192 = load double*, double** %6
%193 = getelementptr inbounds double, double* %192, i64 1
%194 = load double*, double** %6
%195 = getelementptr inbounds double, double* %194, i64 2
%196 = load double*, double** %6
%197 = getelementptr inbounds double, double* %196, i64 3
%198 = load double*, double** %6
%199 = getelementptr inbounds double, double* %198, i64 4
%200 = load double*, double** %6
%201 = getelementptr inbounds double, double* %200, i64 5
%202 = load double*, double** %6
%203 = getelementptr inbounds double, double* %202, i64 6
%204 = load double*, double** %6
%205 = getelementptr inbounds double, double* %204, i64 7
%206 = call i32 @od_fast_renorm(double %181, double %182, double %183, double %184, double %185, double %186, double %187, double %188, double %189, double* %191, double* %193, double* %195, double* %197, double* %199, double* %201, double* %203, double* %205)
ret void
}

LLVM IR (-O2):
define void @od_add(double* nocapture %0, double* nocapture %1, double* %2) {
%4 = alloca double
%5 = bitcast double* %4 to i8*
%6 = getelementptr inbounds double, double* %0, i64 7
%7 = load double, double* %6
%8 = getelementptr inbounds double, double* %1, i64 7
%9 = load double, double* %8
%10 = call double @dd_two_sum(double %7, double %9, double* %4)
%11 = load double, double* %4
%12 = fadd double %11, 0.000000e+00
%13 = getelementptr inbounds double, double* %0, i64 6
%14 = load double, double* %13
%15 = getelementptr inbounds double, double* %1, i64 6
%16 = load double, double* %15
%17 = call double @dd_two_sum(double %14, double %16, double* %4)
%18 = load double, double* %4
%19 = call double @dd_two_sum(double %10, double %18, double* %4)
%20 = load double, double* %4
%21 = fadd double %12, %20
%22 = getelementptr inbounds double, double* %0, i64 5
%23 = load double, double* %22
%24 = getelementptr inbounds double, double* %1, i64 5
%25 = load double, double* %24
%26 = call double @dd_two_sum(double %23, double %25, double* %4)
%27 = load double, double* %4
%28 = call double @dd_two_sum(double %17, double %27, double* %4)
%29 = load double, double* %4
%30 = call double @dd_two_sum(double %19, double %29, double* %4)
%31 = load double, double* %4
%32 = fadd double %21, %31
%33 = getelementptr inbounds double, double* %0, i64 4
%34 = load double, double* %33
%35 = getelementptr inbounds double, double* %1, i64 4
%36 = load double, double* %35
%37 = call double @dd_two_sum(double %34, double %36, double* %4)
%38 = load double, double* %4
%39 = call double @dd_two_sum(double %26, double %38, double* %4)
%40 = load double, double* %4
%41 = call double @dd_two_sum(double %28, double %40, double* %4)
%42 = load double, double* %4
%43 = call double @dd_two_sum(double %30, double %42, double* %4)
%44 = load double, double* %4
%45 = fadd double %32, %44
%46 = getelementptr inbounds double, double* %0, i64 3
%47 = load double, double* %46
%48 = getelementptr inbounds double, double* %1, i64 3
%49 = load double, double* %48
%50 = call double @dd_two_sum(double %47, double %49, double* %4)
%51 = load double, double* %4
%52 = call double @dd_two_sum(double %37, double %51, double* %4)
%53 = load double, double* %4
%54 = call double @dd_two_sum(double %39, double %53, double* %4)
%55 = load double, double* %4
%56 = call double @dd_two_sum(double %41, double %55, double* %4)
%57 = load double, double* %4
%58 = call double @dd_two_sum(double %43, double %57, double* %4)
%59 = load double, double* %4
%60 = fadd double %45, %59
%61 = getelementptr inbounds double, double* %0, i64 2
%62 = load double, double* %61
%63 = getelementptr inbounds double, double* %1, i64 2
%64 = load double, double* %63
%65 = call double @dd_two_sum(double %62, double %64, double* %4)
%66 = load double, double* %4
%67 = call double @dd_two_sum(double %50, double %66, double* %4)
%68 = load double, double* %4
%69 = call double @dd_two_sum(double %52, double %68, double* %4)
%70 = load double, double* %4
%71 = call double @dd_two_sum(double %54, double %70, double* %4)
%72 = load double, double* %4
%73 = call double @dd_two_sum(double %56, double %72, double* %4)
%74 = load double, double* %4
%75 = call double @dd_two_sum(double %58, double %74, double* %4)
%76 = load double, double* %4
%77 = fadd double %60, %76
%78 = getelementptr inbounds double, double* %0, i64 1
%79 = load double, double* %78
%80 = getelementptr inbounds double, double* %1, i64 1
%81 = load double, double* %80
%82 = call double @dd_two_sum(double %79, double %81, double* %4)
%83 = load double, double* %4
%84 = call double @dd_two_sum(double %65, double %83, double* %4)
%85 = load double, double* %4
%86 = call double @dd_two_sum(double %67, double %85, double* %4)
%87 = load double, double* %4
%88 = call double @dd_two_sum(double %69, double %87, double* %4)
%89 = load double, double* %4
%90 = call double @dd_two_sum(double %71, double %89, double* %4)
%91 = load double, double* %4
%92 = call double @dd_two_sum(double %73, double %91, double* %4)
%93 = load double, double* %4
%94 = call double @dd_two_sum(double %75, double %93, double* %4)
%95 = load double, double* %4
%96 = fadd double %77, %95
%97 = load double, double* %0
%98 = load double, double* %1
%99 = call double @dd_two_sum(double %97, double %98, double* %4)
%100 = load double, double* %4
%101 = call double @dd_two_sum(double %82, double %100, double* %4)
%102 = load double, double* %4
%103 = call double @dd_two_sum(double %84, double %102, double* %4)
%104 = load double, double* %4
%105 = call double @dd_two_sum(double %86, double %104, double* %4)
%106 = load double, double* %4
%107 = call double @dd_two_sum(double %88, double %106, double* %4)
%108 = load double, double* %4
%109 = call double @dd_two_sum(double %90, double %108, double* %4)
%110 = load double, double* %4
%111 = call double @dd_two_sum(double %92, double %110, double* %4)
%112 = load double, double* %4
%113 = call double @dd_two_sum(double %94, double %112, double* %4)
%114 = load double, double* %4
%115 = fadd double %96, %114
%116 = getelementptr inbounds double, double* %2, i64 1
%117 = getelementptr inbounds double, double* %2, i64 2
%118 = getelementptr inbounds double, double* %2, i64 3
%119 = getelementptr inbounds double, double* %2, i64 4
%120 = getelementptr inbounds double, double* %2, i64 5
%121 = getelementptr inbounds double, double* %2, i64 6
%122 = getelementptr inbounds double, double* %2, i64 7
%123 = call i32 @od_fast_renorm(double %99, double %101, double %103, double %105, double %107, double %109, double %111, double %113, double %115, double* %2, double* %116, double* %117, double* %118, double* %119, double* %120, double* %121, double* %122)
ret void
}