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[ghc-hetmet.git] / compiler / cmm / CmmParse.y

diff --git a/compiler/cmm/CmmParse.y b/compiler/cmm/CmmParse.y
index e488a66..3cd6be9 100644 (file)
--- a/compiler/cmm/CmmParse.y
+++ b/compiler/cmm/CmmParse.y
@@ -7,7 +7,7 @@
 -----------------------------------------------------------------------------
 
 {
-{-# OPTIONS -w #-}
+{-# OPTIONS -Wwarn -w #-}
 -- The above warning supression flag is a temporary kludge.
 -- While working on this module you are encouraged to remove it and fix
 -- any warnings in the module. See
@@ -63,6 +63,8 @@ import System.Exit
 #include "HsVersions.h"
 }
 
+%expect 0
+
 %token
        ':'     { L _ (CmmT_SpecChar ':') }
        ';'     { L _ (CmmT_SpecChar ';') }
@@ -203,7 +205,7 @@ static      :: { ExtFCode [CmmStatic] }
        | 'CLOSURE' '(' NAME lits ')'
                { do lits <- sequence $4;
                     return $ map CmmStaticLit $
-                       mkStaticClosure (mkForeignLabel $3 Nothing True IsFunction)
+                       mkStaticClosure (mkForeignLabel $3 Nothing True IsData)
                          -- mkForeignLabel because these are only used
                          -- for CHARLIKE and INTLIKE closures in the RTS.
                         dontCareCCS (map getLit lits) [] [] [] }
@@ -976,7 +978,9 @@ emitRetUT :: [(CgRep,CmmExpr)] -> Code
 emitRetUT args = do
   tickyUnboxedTupleReturn (length args)  -- TICK
   (sp, stmts) <- pushUnboxedTuple 0 args
-  emitStmts stmts
+  emitSimultaneously stmts -- NB. the args might overlap with the stack slots
+                           -- or regs that we assign to, so better use
+                           -- simultaneous assignments here (#3546)
   when (sp /= 0) $ stmtC (CmmAssign spReg (cmmRegOffW spReg (-sp)))
   stmtC (CmmJump (entryCode (CmmLoad (cmmRegOffW spReg sp) bWord)) [])
   -- TODO (when using CPS): emitStmt (CmmReturn (map snd args))