fix TComplexity for cirq.GlobalPhaseGate and cirq.global_phase_operation

Author: anurudhp

qualtran/bloqs/basic_gates/su2_rotation.py

@@ -138,7 +138,7 @@ def wire_symbol(self, soq: 'Soquet') -> 'WireSymbol':
         )
 
     def _t_complexity_(self) -> TComplexity:
-        return TComplexity(rotations=3, clifford=1)
+        return TComplexity(rotations=3)
 
     def _is_parameterized_(self) -> bool:
         return any(

qualtran/cirq_interop/t_complexity_protocol.py

@@ -94,6 +94,11 @@ def _is_clifford_or_t(stc: Any, fail_quietly: bool) -> Optional[TComplexity]:
     if not isinstance(stc, (cirq.Gate, cirq.Operation)):
         return None
 
+    if isinstance(stc, cirq.GlobalPhaseGate) or (
+        isinstance(stc, cirq.Operation) and isinstance(stc.gate, cirq.GlobalPhaseGate)
+    ):
+        return TComplexity()
+
     if isinstance(stc, cirq.ClassicallyControlledOperation):
         stc = stc.without_classical_controls()