Disable swapping cmp with instructions potentially raising interrupts

Workaround for issue 5864 disabling parts of an optimization in the JIT. This
is not the best solution to fix this issue, but at least it does not crash.

Source/Core/Core/Src/PowerPC/PPCAnalyst.cpp

@@ -246,17 +246,13 @@ bool CanSwapAdjacentOps(const CodeOp &a, const CodeOp &b)
 		return false;
 	}
 
-	// For now, only integer ops acceptable.
-	switch (b_info->type) {
-	case OPTYPE_INTEGER:
-	case OPTYPE_LOAD:
-	case OPTYPE_STORE:
-	//case OPTYPE_LOADFP:
-	//case OPTYPE_STOREFP:
-		break;
-	default:
+	// For now, only integer ops acceptable. Any instruction which can raise an
+	// interrupt is *not* a possible swap candidate: see [1] for an example of
+	// a crash caused by this error.
+	//
+	// [1] https://code.google.com/p/dolphin-emu/issues/detail?id=5864#c7
+	if (b_info->type != OPTYPE_INTEGER)
 		return false;
-	}
 
 	// Check that we have no register collisions.
 	// That is, check that none of b's outputs matches any of a's inputs,