+++ /dev/null
---- fixedlogical.py.orig       2020-05-14 11:04:21.871367557 -0400
-+++ fixedlogical.py    2020-05-14 11:04:28.714770484 -0400
-@@ -188,7 +188,7 @@
-         return (RA,)
- 
-     @inject()
--    def op_cmpb(self, RB, RA):
-+    def op_cmpb(self, RB, RS, RA):
-         for n in range(0, 7 + 1):
-             if eq(RS[8 * n:8 * n + 7 + 1], RB[8 * n:8 * n + 7 + 1]):
-                 RA[8 * n:8 * n + 7 + 1] = concat(1, repeat=8)
-@@ -493,7 +493,7 @@
-                 form='X',
-                 asmregs=[['RA', 'RS'], '(Rc=1)'])
-     fixedlogical_instrs['cmpb'] = instruction_info(func=op_cmpb,
--                read_regs=OrderedSet(['RB']),
-+                read_regs=OrderedSet(['RB', 'RS']),
-                 uninit_regs=OrderedSet(['RA']), write_regs=OrderedSet(['RA']),
-                 special_regs=OrderedSet(), op_fields=OrderedSet(),
-                 form='X',
 
         name = p[1]
         if name in self.available_op_fields:
             self.op_fields.add(name)
+        if name in self.gprs:
+            self.read_regs.add(name)  # add to list of regs to read
         if name in ['CR', 'LR', 'CTR', 'TAR', 'FPSCR', 'MSR']:
             self.special_regs.add(name)
             self.write_regs.add(name) # and add to list to write