Per the GCN3 and VEGA ISAs, v_cmpx_* writes exec, while v_cmp_* doesn't. This removes the erroneous exec write in the VOP3 implementation of v_cmp_f_i32. Change-Id: I048e35917163c45b879f38d31a88f3f3d56c0baf Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/52445 Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com> Reviewed-by: Matthew Poremba <matthew.poremba@amd.com> Tested-by: kokoro <noreply+kokoro@google.com>