Remove 64-bit limitation from Compiler

Author: joshiemoore

snakehdl/compilers/compiler.py

@@ -60,7 +60,7 @@ def _toposort(self, op: BOp, seen: set[BOp]) -> None:
   def _assign_bits(self, op: BOp) -> int:
     if op.op is BOps.INPUT or op.op is BOps.CONST:
       if op._bits is None: raise RuntimeError(f'{op.op} missing bits\n' + str(op))
-      if op._bits < 1 or op._bits > 64: raise RuntimeError(f'{op.op} bits must be 1-64\n' + str(op))
+      if op._bits < 1: raise RuntimeError(f'{op.op} bits must be > 0\n' + str(op))
       return op._bits
     elif op.op is BOps.BIT:
       res = self._assign_bits(op.src[0])

tests/test_compiler.py

@@ -269,6 +269,10 @@ def test_validation_input_missing_label(self):
     with pytest.raises(RuntimeError):
       PythonCompiler(output(a=input_bits(None))).compile()
 
+  def test_validation_bits(self):
+    with pytest.raises(RuntimeError):
+      PythonCompiler(output(a=const_bits(0, 0))).compile()
+
 class TestOptimizations:
   def test_opt_populate_shared(self):
     x = xor(input_bits('a'), input_bits('b'))