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upgraded size cast conversion

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- support casts of generate scoped expressions
- support casts to sizes involving genvars
This commit is contained in:
Zachary Snow
2020-07-14 20:10:38 -06:00
parent 2d3973e624
commit b19259c694
6 changed files with 147 additions and 93 deletions
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test/basic/cast.sv
+9 -5
View File
@@ -1,25 +1,29 @@
module top;
parameter WIDTH = 32;
generate
begin : A
int x = -235;
end
endgenerate
initial begin
logic [31:0] w = 1234;
int x = -235;
int y = 1234;
logic [4:0] z = y;
$display("%0d %0d", w, 5'(w));
$display("%0d %0d", x, 5'(x));
$display("%0d %0d", A.x, 5'(A.x));
$display("%0d %0d", y, 5'(y));
$display("%0d %0d", z, 5'(z));
$display("%0d %0d", w+1, 5'(w+1));
$display("%0d %0d", x+1, 5'(x+1));
$display("%0d %0d", A.x+1, 5'(A.x+1));
$display("%0d %0d", y+1, 5'(y+1));
$display("%0d %0d", z+1, 5'(z+1));
$display("%b %b", w, 40'(w));
$display("%b %b", x, 40'(x));
$display("%b %b", A.x, 40'(A.x));
$display("%b %b", y, 40'(y));
$display("%b %b", z, 40'(z));
$display("%0d %0d", w, ($clog2(WIDTH))'(w));
$display("%0d %0d", x, ($clog2(WIDTH))'(x));
$display("%0d %0d", A.x, ($clog2(WIDTH))'(A.x));
$display("%0d %0d", y, ($clog2(WIDTH))'(y));
$display("%0d %0d", z, ($clog2(WIDTH))'(z));
$display("%b", 32'(4));
test/basic/cast.v
+10 -6
View File
@@ -1,28 +1,32 @@
module top;
generate
begin : A
reg signed [31:0] x;
end
endgenerate
initial begin : foo_block
reg [31:0] w;
reg signed [31:0] x;
reg signed [31:0] y;
reg [4:0] z;
w = 1234;
x = -235;
A.x = -235;
y = 1234;
z = y;
$display("%0d %0d", w, w[4:0]);
$display("%0d %0d", x, $signed(x[4:0]));
$display("%0d %0d", A.x, $signed(A.x[4:0]));
$display("%0d %0d", y, $signed(y[4:0]));
$display("%0d %0d", z, z[4:0]);
$display("%0d %0d", w+1, w[4:0]+1);
$display("%0d %0d", x+1, $signed(x[4:0])+1);
$display("%0d %0d", A.x+1, $signed(A.x[4:0])+1);
$display("%0d %0d", y+1, $signed(y[4:0])+1);
$display("%0d %0d", z+1, z[4:0]+1);
$display("%b %b", w, {8'b0, w});
$display("%b %b", x, {8'hFF, x});
$display("%b %b", A.x, {8'hFF, A.x});
$display("%b %b", y, {8'b0, y});
$display("%b %b", z, {35'b0, z});
$display("%0d %0d", w, w[4:0]);
$display("%0d %0d", x, $signed(x[4:0]));
$display("%0d %0d", A.x, $signed(A.x[4:0]));
$display("%0d %0d", y, $signed(y[4:0]));
$display("%0d %0d", z, z[4:0]);
$display("%b", 32'd4);
test/basic/local_cast.sv
+19
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@@ -0,0 +1,19 @@
module top;
generate
for (genvar i = 1; i < 5; ++i) begin
initial begin
integer x, y;
x = $unsigned(i'(1'sb1));
y = $unsigned((i + 5)'(1'sb1));
$display("%0d %b %b", i, x, y);
end
for (genvar j = 3; j < 6; ++j) begin
initial begin
integer x;
x = $unsigned((i * j)'(1'sb1));
$display("%0d %0d %b", i, j, x);
end
end
end
endgenerate
endmodule
test/basic/local_cast.v
+24
View File
@@ -0,0 +1,24 @@
module top;
generate
genvar i, j;
for (i = 1; i < 5; i = i + 1) begin
initial begin : foo
integer x, y;
x = $unsigned(cast_i(1'sb1));
y = (1 << (i + 5)) - 1;
$display("%0d %b %b", i, x, y);
end
for (j = 3; j < 6; j = j + 1) begin
initial begin : bar
integer x;
x = (1 << (i * j)) - 1;
$display("%0d %0d %b", i, j, x);
end
end
function signed [i-1:0] cast_i;
input signed [i-1:0] inp;
cast_i = inp;
endfunction
end
endgenerate
endmodule