Remove code that is dead now that we need >= 6.12 to build

[ghc-hetmet.git] / compiler / cmm / CmmLint.hs

diff --git a/compiler/cmm/CmmLint.hs b/compiler/cmm/CmmLint.hs
index 7c8f2b3..2fc4a74 100644 (file)
--- a/compiler/cmm/CmmLint.hs
+++ b/compiler/cmm/CmmLint.hs
@@ -19,14 +19,13 @@ module CmmLint (
 import BlockId
 import Cmm
 import CLabel
-import Maybe
 import Outputable
 import PprCmm
-import Unique
 import Constants
 import FastString
 
 import Control.Monad
+import Data.Maybe
 
 -- -----------------------------------------------------------------------------
 -- Exported entry points:
@@ -59,7 +58,7 @@ lintCmmTop (CmmData {})
 
 lintCmmBlock :: BlockSet -> GenBasicBlock CmmStmt -> CmmLint ()
 lintCmmBlock labels (BasicBlock id stmts)
-  = addLintInfo (text "in basic block " <> ppr (getUnique id)) $
+  = addLintInfo (text "in basic block " <> ppr id) $
        mapM_ (lintCmmStmt labels) stmts
 
 -- -----------------------------------------------------------------------------
@@ -70,7 +69,7 @@ lintCmmBlock labels (BasicBlock id stmts)
 
 lintCmmExpr :: CmmExpr -> CmmLint CmmType
 lintCmmExpr (CmmLoad expr rep) = do
-  lintCmmExpr expr
+  _ <- lintCmmExpr expr
   when (widthInBytes (typeWidth rep) >= wORD_SIZE) $
      cmmCheckWordAddress expr
   return rep
@@ -88,20 +87,11 @@ lintCmmExpr expr =
 
 -- Check for some common byte/word mismatches (eg. Sp + 1)
 cmmCheckMachOp   :: MachOp -> [CmmExpr] -> [CmmType] -> CmmLint CmmType
-cmmCheckMachOp  op args@[CmmReg reg, CmmLit (CmmInt i _)] _
-  | isWordOffsetReg reg && isOffsetOp op && i `rem` fromIntegral wORD_SIZE /= 0
-  = cmmLintDubiousWordOffset (CmmMachOp op args)
 cmmCheckMachOp op [lit@(CmmLit (CmmInt { })), reg@(CmmReg _)] tys
   = cmmCheckMachOp op [reg, lit] tys
 cmmCheckMachOp op _ tys
   = return (machOpResultType op tys)
 
-isWordOffsetReg  :: CmmReg -> Bool
-isWordOffsetReg (CmmGlobal Sp) = True
--- No warnings for unaligned arithmetic, which is used to tag dynamic constructor closures.
---isWordOffsetReg (CmmGlobal Hp) = True
-isWordOffsetReg _ = False
-
 isOffsetOp :: MachOp -> Bool
 isOffsetOp (MO_Add _) = True
 isOffsetOp (MO_Sub _) = True
@@ -136,8 +126,8 @@ lintCmmStmt labels = lint
                 then return ()
                 else cmmLintAssignErr stmt erep reg_ty
           lint (CmmStore l r) = do
-            lintCmmExpr l
-            lintCmmExpr r
+            _ <- lintCmmExpr l
+            _ <- lintCmmExpr r
             return ()
           lint (CmmCall target _res args _ _) =
               lintTarget target >> mapM_ (lintCmmExpr . hintlessCmm) args