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shiftx2mux: fix select out of bounds

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This commit is contained in:
Eddie Hung 2020-02-05 16:41:09 -08:00
parent 505557e93e
commit 4c1d3a126d
3 changed files with 14 additions and 2 deletions
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11
tests/techmap/shiftx2mux.ys
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@ -108,3 +108,14 @@ design -import gate -as gate
miter -equiv -flatten -make_assert -make_outputs gold gate miter
sat -verify -prove-asserts -show-ports miter
design -reset
read_verilog <<EOT
module top(input [6:0] A, input [1:0] B, output [1:0] Y);
wire [7:0] AA = {1'bx, A};
assign Y = AA[B*2 +: 2];
endmodule
EOT
opt
wreduce
equiv_opt techmap