This instruction does an atomic add of a 32-bit float with a VGPR and value in LDS atomically without return. Change-Id: Id4f23a1ab587a23edfd1d88ede1cbcc5bdedc0cb Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67074 Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>