--- -----------------------------------------------------------------------------
--- Boring Cmm traversals for collecting usage info and substitutions.
-
-getStmtUses :: CmmStmt -> UniqFM Int
-getStmtUses (CmmAssign _ e) = getExprUses e
-getStmtUses (CmmStore e1 e2) = plusUFM_C (+) (getExprUses e1) (getExprUses e2)
-getStmtUses (CmmCall target _ es _)
- = plusUFM_C (+) (uses target) (getExprsUses (map fst es))
- where uses (CmmForeignCall e _) = getExprUses e
- uses _ = emptyUFM
-getStmtUses (CmmCondBranch e _) = getExprUses e
-getStmtUses (CmmSwitch e _) = getExprUses e
-getStmtUses (CmmJump e _) = getExprUses e
-getStmtUses _ = emptyUFM
-
-getExprUses :: CmmExpr -> UniqFM Int
-getExprUses (CmmReg (CmmLocal (LocalReg u _ _))) = unitUFM u 1
-getExprUses (CmmRegOff (CmmLocal (LocalReg u _ _)) _) = unitUFM u 1
-getExprUses (CmmLoad e _) = getExprUses e
-getExprUses (CmmMachOp _ es) = getExprsUses es
-getExprUses _other = emptyUFM
-
-getExprsUses es = foldr (plusUFM_C (+)) emptyUFM (map getExprUses es)
-