[PATCH] Move VFP4 predicate inside UseFusedMAC

[Tim Northover]

Hi Daniel,

 def  VFMAfd   : N3VDMulOp<0, 0, 0b00, 0b1100, 1, IIC_VFMACD, "vfma", "f32",
                           v2f32, fmul_su, fadd_mlx>,
-                Requires<[HasNEON,HasVFP4,UseFusedMAC]>;
+                Requires<[HasNEON,UseFusedMAC]>;

Doesn't this change mean the assembler will permit vfma even when VFP4
isn't available? In general you can probably simplify the Pat
instances, but might have to be more careful on the instructions.

Cheers.

Tim.