tag_expr = cmmGetClosureType (CmmReg nodeReg)
cond1 tag = cmmEqWord tag (CmmLit (mkIntCLit 0))
cond2 tag = cmmUGtWord tag highCons
tag_expr = cmmGetClosureType (CmmReg nodeReg)
cond1 tag = cmmEqWord tag (CmmLit (mkIntCLit 0))
cond2 tag = cmmUGtWord tag highCons