11.3.6.2 Registers Pushed Out at the Hierarchical Boundary
process (clk, a, b) begin
if (clk'event and clk = '1') then
c <= a + b;
end if;
end process;process (clk, a, b) begin
if (clk'event and clk = '1') then
c <= a + b;
end if;
end process;Rev: A