opt_expr: Fix crash on $mul optimization with more zeros removed than Y has.

Fixes #2221.
2026-08-28 17:14:11 +02:00 · 2020-07-05 06:31:58 +02:00
parent b004f09018
commit 7afcb72c98
2 changed files with 24 additions and 0 deletions
@@ -0,0 +1,16 @@
+read_verilog <<EOT
+module test (
+        input [1:0] a,
+        input [1:0] b,
+        output [5:0] y
+);
+
+wire [5:0] aa = {a, 4'h0};
+wire [5:0] bb = {b, 4'h0};
+
+assign y = aa * bb;
+
+endmodule
+EOT
+
+equiv_opt -assert opt_expr