X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fcmm%2FCmm.hs;h=c48269ecf51c70f387a1520929a254bab3ba4bf0;hb=787b08bdea84cca4bf9490d87c059453bffc5ad2;hp=383ed060e08b85b9cd48df7dc3e4700978374c2d;hpb=31a9d04804d9cacda35695c5397590516b964964;p=ghc-hetmet.git

diff --git a/compiler/cmm/Cmm.hs b/compiler/cmm/Cmm.hs
index 383ed06..c48269e 100644
--- a/compiler/cmm/Cmm.hs
+++ b/compiler/cmm/Cmm.hs
@@ -174,7 +174,9 @@ data ClosureTypeInfo
   | ThunkInfo  ClosureLayout C_SRT
   | ThunkSelectorInfo SelectorOffset C_SRT
   | ContInfo
-      [Maybe LocalReg]  -- stack layout
+      [Maybe LocalReg]  -- Stack layout: Just x, an item x
+                        --               Nothing: a 1-word gap
+			-- Start of list is the *young* end
       C_SRT
 
 data CmmReturnInfo = CmmMayReturn
@@ -382,6 +384,7 @@ data CallishMachOp
   | MO_F32_Exp
   | MO_F32_Sqrt
   | MO_WriteBarrier
+  | MO_Touch         -- Keep variables live (when using interior pointers)
   deriving (Eq, Show)
 
 pprCallishMachOp :: CallishMachOp -> SDoc