aco: fix SMEM load_global_amd with non-zero offset

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Fixes: 3e9517c757 ("aco: implement _amd global access intrinsics")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16775>

src/amd/compiler/aco_instruction_selection.cpp

@@ -4344,6 +4344,8 @@ smem_load_callback(Builder& bld, const LoadEmitInfo& info, Temp offset, unsigned
       if (offset.id() && const_offset)
          load->operands[1] = bld.sop2(aco_opcode::s_add_u32, bld.def(s1), bld.def(s1, scc), offset,
                                       Operand::c32(const_offset));
+      else if (offset.id())
+         load->operands[1] = Operand(offset);
       else
          load->operands[1] = Operand::c32(const_offset);
    }