hdl.ast: fix Const.cast(Cat(...)) handling for signed numbers.

2023-12-30 12:09:28 +01:00 · 2023-12-30 12:09:28 +01:00 · 6780c838b2
commit 6780c838b2
parent 82d35fb932
2 changed files with 12 additions and 1 deletions
--- a/amaranth/hdl/ast.py
+++ b/amaranth/hdl/ast.py
@ -727,7 +727,8 @@ class Const(Value):
            width = 0
            for part in obj.parts:
                const  = Const.cast(part)
-                value |= const.value << width
+                part_value = Const(const.value, unsigned(const.width)).value
+                value |= part_value << width
                width += len(const)
            return Const(value, width)
        else: