These are used instead of the *f float forms on x86.
We should probably investigate why, but having LLVM attempting, failing and crashing to resolve functions under any circumstances is Not Good.

Bug: b/126873455
Change-Id: Ic31866ebea7deba2dc29a9a4fb54a457b13e622a
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/33214Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>