Fixed smrd test for smem merging
Fixed smrd test for smem merging

The code must be scheduled differently now, as on gfx9 the
s_set_gpr_idx_on is lower down and does not thwart the smem merging.

Change-Id: Ib93539fd2abf96db04b0c3abc7c9b724d6b3b640

GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm