diff options
Diffstat (limited to 'compiler/GHC/StgToCmm/Closure.hs')
| -rw-r--r-- | compiler/GHC/StgToCmm/Closure.hs | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/compiler/GHC/StgToCmm/Closure.hs b/compiler/GHC/StgToCmm/Closure.hs index fc76664d94..56cd91596e 100644 --- a/compiler/GHC/StgToCmm/Closure.hs +++ b/compiler/GHC/StgToCmm/Closure.hs @@ -22,7 +22,7 @@ module GHC.StgToCmm.Closure ( argPrimRep, NonVoid(..), fromNonVoid, nonVoidIds, nonVoidStgArgs, - assertNonVoidIds, assertNonVoidStgArgs, + assertNonVoidIds, assertNonVoidStgArgs, hasNoNonZeroWidthArgs, -- * LambdaFormInfo LambdaFormInfo, -- Abstract @@ -170,6 +170,12 @@ assertNonVoidStgArgs :: [StgArg] -> [NonVoid StgArg] assertNonVoidStgArgs args = assert (not (any (isZeroBitTy . stgArgType) args)) $ coerce args +-- | Returns whether there are any arguments with a non-zero-width runtime +-- representation. +-- +-- Returns True if the datacon has no or /just/ zero-width arguments. +hasNoNonZeroWidthArgs :: DataCon -> Bool +hasNoNonZeroWidthArgs = all (isZeroBitTy . scaledThing) . dataConRepArgTys ----------------------------------------------------------------------------- -- Representations |