Moved global register saving from the backend to codeGen

[ghc-hetmet.git] / compiler / nativeGen / AsmCodeGen.lhs

diff --git a/compiler/nativeGen/AsmCodeGen.lhs b/compiler/nativeGen/AsmCodeGen.lhs
index ff3063c..f909d24 100644 (file)
--- a/compiler/nativeGen/AsmCodeGen.lhs
+++ b/compiler/nativeGen/AsmCodeGen.lhs
@@ -444,16 +444,11 @@ fixAssign (CmmAssign (CmmGlobal reg) src)
   where
        reg_or_addr = get_GlobalReg_reg_or_addr reg
 
-fixAssign (CmmCall target results args vols)
+fixAssign (CmmCall target results args)
   = mapAndUnzipUs fixResult results `thenUs` \ (results',stores) ->
-    returnUs (caller_save ++
-             CmmCall target results' args vols :
-             caller_restore ++
+    returnUs (CmmCall target results' args :
              concat stores)
   where
-       -- we also save/restore any caller-saves STG registers here
-       (caller_save, caller_restore) = callerSaveVolatileRegs vols
-
        fixResult g@(CmmGlobal reg,hint) = 
          case get_GlobalReg_reg_or_addr reg of
                Left realreg -> returnUs (g, [])
@@ -539,7 +534,7 @@ cmmStmtConFold stmt
            -> do addr' <- cmmExprConFold JumpReference addr
                  return $ CmmJump addr' regs
 
-       CmmCall target regs args vols
+       CmmCall target regs args
           -> do target' <- case target of
                              CmmForeignCall e conv -> do
                                e' <- cmmExprConFold CallReference e
@@ -548,7 +543,7 @@ cmmStmtConFold stmt
                  args' <- mapM (\(arg, hint) -> do
                                   arg' <- cmmExprConFold DataReference arg
                                   return (arg', hint)) args
-                return $ CmmCall target' regs args' vols
+                return $ CmmCall target' regs args'
 
         CmmCondBranch test dest
            -> do test' <- cmmExprConFold DataReference test