X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2FcodeGen%2FCgCallConv.hs;h=f463255807ac2580ca2702d7b0a8debce94996dc;hb=04db0e9fa47ce4dfbcb73ec1752d94195f3b394e;hp=9b73c3bcf7de941c0e556c97623eecae45030701;hpb=d1c1b7d0e7b94ede238845c91f58582bad3b3ef3;p=ghc-hetmet.git

diff --git a/ghc/compiler/codeGen/CgCallConv.hs b/ghc/compiler/codeGen/CgCallConv.hs
index 9b73c3b..f463255 100644
--- a/ghc/compiler/codeGen/CgCallConv.hs
+++ b/ghc/compiler/codeGen/CgCallConv.hs
@@ -108,6 +108,8 @@ argBits (PtrArg : args) = False : argBits args
 argBits (arg    : args) = take (cgRepSizeW arg) (repeat True) ++ argBits args
 
 stdPattern :: [CgRep] -> Maybe Int
+stdPattern []          = Just ARG_NONE	-- just void args, probably
+
 stdPattern [PtrArg]    = Just ARG_P
 stdPattern [FloatArg]  = Just ARG_F
 stdPattern [DoubleArg] = Just ARG_D
@@ -204,17 +206,20 @@ mkRegLiveness regs ptrs nptrs
 
 -- For a slow call, we must take a bunch of arguments and intersperse
 -- some stg_ap_<pattern>_ret_info return addresses.
-constructSlowCall :: [(CgRep,CmmExpr)] -> (CLabel, [(CgRep,CmmExpr)])
+constructSlowCall
+	:: [(CgRep,CmmExpr)]
+	-> (CLabel,		-- RTS entry point for call
+	   [(CgRep,CmmExpr)],	-- args to pass to the entry point
+	   [(CgRep,CmmExpr)])	-- stuff to save on the stack
+
    -- don't forget the zero case
 constructSlowCall [] 
-  = (stg_ap_0, [])
-  where
-    stg_ap_0 = enterRtsRetLabel SLIT("stg_ap_0")
+  = (mkRtsApFastLabel SLIT("stg_ap_0"), [], [])
 
 constructSlowCall amodes
-  = (stg_ap_pat, these ++ slowArgs rest)
+  = (stg_ap_pat, these, rest)
   where 
-    stg_ap_pat = enterRtsRetLabel arg_pat
+    stg_ap_pat = mkRtsApFastLabel arg_pat
     (arg_pat, these, rest) = matchSlowPattern amodes
 
 enterRtsRetLabel arg_pat