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Fix calculation for whether coalesceFlags is needed for xchg instruction in CPU DSL
author Michael Pavone <pavone@retrodev.com>
date Wed, 20 Feb 2019 00:34:52 -0800
parents 6e4faa10f9ee
children 0c1491818f4b
comparison
equal deleted inserted replaced
1764:6cc2fa6a1955 1765:7b6831305a6a
729 allParamsConst = flagUpdates is None and not prog.conditional 729 allParamsConst = flagUpdates is None and not prog.conditional
730 opDef = _opMap.get(self.op) 730 opDef = _opMap.get(self.op)
731 for param in self.params: 731 for param in self.params:
732 allowConst = (self.op in prog.subroutines or len(procParams) != len(self.params) - 1) and param in parent.regValues 732 allowConst = (self.op in prog.subroutines or len(procParams) != len(self.params) - 1) and param in parent.regValues
733 isDst = (not opDef is None) and len(procParams) in opDef.outOp 733 isDst = (not opDef is None) and len(procParams) in opDef.outOp
734 if isDst and self.op == 'xchg':
735 #xchg uses its regs as both source and destination
736 #we need to resolve as both so that disperse/coalesce flag stuff gets done
737 prog.resolveParam(param, parent, fieldVals, allowConst, False)
734 param = prog.resolveParam(param, parent, fieldVals, allowConst, isDst) 738 param = prog.resolveParam(param, parent, fieldVals, allowConst, isDst)
735 739
736 if (not type(param) is int) and len(procParams) != len(self.params) - 1: 740 if (not type(param) is int) and len(procParams) != len(self.params) - 1:
737 allParamsConst = False 741 allParamsConst = False
738 procParams.append(param) 742 procParams.append(param)