Where is ldc.gccbuiltins_x86?

[Iakh via digitalmars-d-ldc]

I'm trying to do

import ldc.gccbuiltins_x86;

but there is no such module
Error: module gccbuiltins_x86 is in file 'ldc/gccbuiltins_x86.d' 
which cannot be read
import path[0] = /usr/include/dlang/ldc/ldc
import path[1] = /usr/include/dlang/ldc
import path[2] = .
ldc failed with exit code 1.

LDC - the LLVM D compiler (0.16.1):
based on DMD v2.067.1 and LLVM 3.7.0

Is there a way to use gccbuiltins (sse2 intrinsics)?