- = let (vars, exprs) = unzip bs
- in
- do { (vars', _, exprs', hs) <- fixV $
- \ ~(_, inlines, rhss, _) ->
- do { -- Vectorise the right-hand sides, create an appropriate top-level bindings and
- -- add them to the vectorisation map.
- ; vars' <- sequence [vectTopBinder var inline rhs
- | (var, ~(inline, rhs)) <- zipLazy vars (zip inlines rhss)]
- ; (inlines, areScalars, exprs') <- mapAndUnzip3M (uncurry $ vectTopRhs vars) bs
- ; hs <- takeHoisted
- ; if and areScalars
- then -- (1) Entire recursive group is scalar
- -- => add all variables to the global set of scalars
- do { mapM addGlobalScalar vars
- ; return (vars', inlines, exprs', hs)
- }
- else -- (2) At least one binding is not scalar
- -- => vectorise again with empty set of local scalars
- do { (inlines, _, exprs') <- mapAndUnzip3M (uncurry $ vectTopRhs []) bs
- ; hs <- takeHoisted
- ; return (vars', inlines, exprs', hs)
- }
- }
-
- -- Replace the original top-level bindings by a values projected from the vectorised
- -- closures and add any newly created hoisted top-level bindings to the group.
- ; cexprs <- sequence $ zipWith3 tryConvert vars vars' exprs
- ; return . Rec $ zip vars cexprs ++ zip vars' exprs' ++ hs
- }
- `orElseV`
- return b
-
+ = unlessSomeNoVectDecl $
+ do { (vars', _, exprs', hs) <- fixV $
+ \ ~(_, inlines, rhss, _) ->
+ do { -- Vectorise the right-hand sides, create an appropriate top-level bindings
+ -- and add them to the vectorisation map.
+ ; vars' <- sequence [vectTopBinder var inline rhs
+ | (var, ~(inline, rhs)) <- zipLazy vars (zip inlines rhss)]
+ ; (inlines, areScalars, exprs') <- mapAndUnzip3M (uncurry $ vectTopRhs vars) bs
+ ; hs <- takeHoisted
+ ; if and areScalars
+ then -- (1) Entire recursive group is scalar
+ -- => add all variables to the global set of scalars
+ do { mapM_ addGlobalScalar vars
+ ; return (vars', inlines, exprs', hs)
+ }
+ else -- (2) At least one binding is not scalar
+ -- => vectorise again with empty set of local scalars
+ do { (inlines, _, exprs') <- mapAndUnzip3M (uncurry $ vectTopRhs []) bs
+ ; hs <- takeHoisted
+ ; return (vars', inlines, exprs', hs)
+ }
+ }
+
+ -- Replace the original top-level bindings by a values projected from the vectorised
+ -- closures and add any newly created hoisted top-level bindings to the group.
+ ; cexprs <- sequence $ zipWith3 tryConvert vars vars' exprs
+ ; return . Rec $ zip vars cexprs ++ zip vars' exprs' ++ hs
+ }
+ `orElseV`
+ return b
+ where
+ (vars, exprs) = unzip bs
+
+ unlessSomeNoVectDecl vectorise
+ = do { hasNoVectDecls <- mapM noVectDecl vars
+ ; when (and hasNoVectDecls) $
+ traceVt "NOVECTORISE" $ ppr vars
+ ; if and hasNoVectDecls
+ then return b -- all bindings have 'NOVECTORISE'
+ else if or hasNoVectDecls
+ then cantVectorise noVectoriseErr (ppr b) -- some (but not all) have 'NOVECTORISE'
+ else vectorise -- no binding has a 'NOVECTORISE' decl
+ }
+ noVectoriseErr = "NOVECTORISE must be used on all or no bindings of a recursive group"
+
projects / ghc-hetmet.git / commitdiff