void copy44f33f(float *src, float *dst) {
  *(dst++) = *(src++);
  *(dst++) = *(src++);
  *(dst++) = *(src++);
  src++;
  *(dst++) = *(src++);
  *(dst++) = *(src++);
  *(dst++) = *(src++);
  src++;
  *(dst++) = *(src++);
  *(dst++) = *(src++);
  *(dst++) = *(src++);
  src++;
}


x86 assembly (clang, -O0):
<copy44f33f>:
push   %rbp
mov    %rsp,%rbp
mov    %rdi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
add    $0x4,%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
add    $0x4,%rax
mov    %rax,-0x8(%rbp)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x8(%rbp)
movss  (%rax),%xmm0
mov    -0x10(%rbp),%rax
mov    %rax,%rcx
add    $0x4,%rcx
mov    %rcx,-0x10(%rbp)
movss  %xmm0,(%rax)
mov    -0x8(%rbp),%rax
add    $0x4,%rax
mov    %rax,-0x8(%rbp)
pop    %rbp
ret

x86 assembly (clang, -O2):
<copy44f33f>:
movss  (%rdi),%xmm0
movss  %xmm0,(%rsi)
movss  0x4(%rdi),%xmm0
movss  %xmm0,0x4(%rsi)
movss  0x8(%rdi),%xmm0
movss  %xmm0,0x8(%rsi)
movss  0x10(%rdi),%xmm0
movss  %xmm0,0xc(%rsi)
movss  0x14(%rdi),%xmm0
movss  %xmm0,0x10(%rsi)
movss  0x18(%rdi),%xmm0
movss  %xmm0,0x14(%rsi)
movss  0x20(%rdi),%xmm0
movss  %xmm0,0x18(%rsi)
movss  0x24(%rdi),%xmm0
movss  %xmm0,0x1c(%rsi)
movss  0x28(%rdi),%xmm0
movss  %xmm0,0x20(%rsi)
ret

LLVM IR (-O0):
define void @copy44f33f(float* %0, float* %1) {
%3 = alloca float*
%4 = alloca float*
store float* %0, float** %3
store float* %1, float** %4
%5 = load float*, float** %3
%6 = getelementptr inbounds float, float* %5, i32 1
store float* %6, float** %3
%7 = load float, float* %5
%8 = load float*, float** %4
%9 = getelementptr inbounds float, float* %8, i32 1
store float* %9, float** %4
store float %7, float* %8
%10 = load float*, float** %3
%11 = getelementptr inbounds float, float* %10, i32 1
store float* %11, float** %3
%12 = load float, float* %10
%13 = load float*, float** %4
%14 = getelementptr inbounds float, float* %13, i32 1
store float* %14, float** %4
store float %12, float* %13
%15 = load float*, float** %3
%16 = getelementptr inbounds float, float* %15, i32 1
store float* %16, float** %3
%17 = load float, float* %15
%18 = load float*, float** %4
%19 = getelementptr inbounds float, float* %18, i32 1
store float* %19, float** %4
store float %17, float* %18
%20 = load float*, float** %3
%21 = getelementptr inbounds float, float* %20, i32 1
store float* %21, float** %3
%22 = load float*, float** %3
%23 = getelementptr inbounds float, float* %22, i32 1
store float* %23, float** %3
%24 = load float, float* %22
%25 = load float*, float** %4
%26 = getelementptr inbounds float, float* %25, i32 1
store float* %26, float** %4
store float %24, float* %25
%27 = load float*, float** %3
%28 = getelementptr inbounds float, float* %27, i32 1
store float* %28, float** %3
%29 = load float, float* %27
%30 = load float*, float** %4
%31 = getelementptr inbounds float, float* %30, i32 1
store float* %31, float** %4
store float %29, float* %30
%32 = load float*, float** %3
%33 = getelementptr inbounds float, float* %32, i32 1
store float* %33, float** %3
%34 = load float, float* %32
%35 = load float*, float** %4
%36 = getelementptr inbounds float, float* %35, i32 1
store float* %36, float** %4
store float %34, float* %35
%37 = load float*, float** %3
%38 = getelementptr inbounds float, float* %37, i32 1
store float* %38, float** %3
%39 = load float*, float** %3
%40 = getelementptr inbounds float, float* %39, i32 1
store float* %40, float** %3
%41 = load float, float* %39
%42 = load float*, float** %4
%43 = getelementptr inbounds float, float* %42, i32 1
store float* %43, float** %4
store float %41, float* %42
%44 = load float*, float** %3
%45 = getelementptr inbounds float, float* %44, i32 1
store float* %45, float** %3
%46 = load float, float* %44
%47 = load float*, float** %4
%48 = getelementptr inbounds float, float* %47, i32 1
store float* %48, float** %4
store float %46, float* %47
%49 = load float*, float** %3
%50 = getelementptr inbounds float, float* %49, i32 1
store float* %50, float** %3
%51 = load float, float* %49
%52 = load float*, float** %4
%53 = getelementptr inbounds float, float* %52, i32 1
store float* %53, float** %4
store float %51, float* %52
%54 = load float*, float** %3
%55 = getelementptr inbounds float, float* %54, i32 1
store float* %55, float** %3
ret void
}

LLVM IR (-O2):
define void @copy44f33f(float* nocapture %0, float* nocapture writeonly %1) {
%3 = getelementptr inbounds float, float* %0, i64 1
%4 = load float, float* %0
%5 = getelementptr inbounds float, float* %1, i64 1
store float %4, float* %1
%6 = getelementptr inbounds float, float* %0, i64 2
%7 = load float, float* %3
%8 = getelementptr inbounds float, float* %1, i64 2
store float %7, float* %5
%9 = load float, float* %6
%10 = getelementptr inbounds float, float* %1, i64 3
store float %9, float* %8
%11 = getelementptr inbounds float, float* %0, i64 4
%12 = getelementptr inbounds float, float* %0, i64 5
%13 = load float, float* %11
%14 = getelementptr inbounds float, float* %1, i64 4
store float %13, float* %10
%15 = getelementptr inbounds float, float* %0, i64 6
%16 = load float, float* %12
%17 = getelementptr inbounds float, float* %1, i64 5
store float %16, float* %14
%18 = load float, float* %15
%19 = getelementptr inbounds float, float* %1, i64 6
store float %18, float* %17
%20 = getelementptr inbounds float, float* %0, i64 8
%21 = getelementptr inbounds float, float* %0, i64 9
%22 = load float, float* %20
%23 = getelementptr inbounds float, float* %1, i64 7
store float %22, float* %19
%24 = getelementptr inbounds float, float* %0, i64 10
%25 = load float, float* %21
%26 = getelementptr inbounds float, float* %1, i64 8
store float %25, float* %23
%27 = load float, float* %24
store float %27, float* %26
ret void
}