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Zachary Snow
2aff725ea2
- The deleted chunk in TFBlock has been unreachable since 57ef23ef. The
RemoveComments change would make it reachable by dropping the leading
Null in a task or function body.
- The optimization in TFBlock was unsound because the nested block could
shadow identifiers used (but not defined) in the tail of the outer
block.
- The optimization is not clearly necessary, so I'm dropping it for now.
- Expand tf_block test coverage.
77 lines
1.4 KiB
Systemverilog
77 lines
1.4 KiB
Systemverilog
module top;
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function [2:0] f;
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input [2:0] n;
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n += 1;
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return n + 3;
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endfunction
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task t;
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$display("hello");
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$display("world");
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endtask
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initial t();
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initial $display("f(0) = ", f(0));
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initial $display("f(1) = ", f(1));
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task t1;
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localparam X = 1;
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begin
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localparam X = 2;
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$display("t1", X);
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end
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endtask
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task t2;
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localparam X = 10;
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begin
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localparam X = 20;
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$display("t2", X);
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end
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$display("t2", X);
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endtask
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task t3;
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localparam X = 100;
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begin
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localparam Y = 200;
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$display("t3", Y);
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end
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$display("t3", X);
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endtask
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task t4;
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begin
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begin
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localparam Y = 99;
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$display("t4", Y);
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end
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$display("t4", 123);
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end
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endtask
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initial begin
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t1;
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t2;
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t3;
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t4;
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end
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localparam X = 1;
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task a;
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localparam X = 2;
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begin
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begin : blk
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localparam X = 3;
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$display("a", X);
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end
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$display("a", X);
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end
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endtask
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task b;
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begin : blk
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localparam X = 5;
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$display("b", X);
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end
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$display("b", X);
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endtask
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initial begin
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a;
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b;
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end
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endmodule
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