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| author | simonmar <unknown> | 2003-01-07 14:31:20 +0000 |
|---|---|---|
| committer | simonmar <unknown> | 2003-01-07 14:31:20 +0000 |
| commit | cb43dfcd86ff1904bd70bf355f1658eb66489842 (patch) | |
| tree | 794559f18d42d1c99c350d4e11b51e50c72a67b6 /ghc/compiler/codeGen/CgMonad.lhs | |
| parent | 6ee2bfb3f5a15b7c0fd904c631041dac1945fe2b (diff) | |
| download | haskell-cb43dfcd86ff1904bd70bf355f1658eb66489842.tar.gz | |
[project @ 2003-01-07 14:31:19 by simonmar]
Update comments
Diffstat (limited to 'ghc/compiler/codeGen/CgMonad.lhs')
| -rw-r--r-- | ghc/compiler/codeGen/CgMonad.lhs | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/ghc/compiler/codeGen/CgMonad.lhs b/ghc/compiler/codeGen/CgMonad.lhs index 2a7e3ea5c9..a14b77a562 100644 --- a/ghc/compiler/codeGen/CgMonad.lhs +++ b/ghc/compiler/codeGen/CgMonad.lhs @@ -1,7 +1,7 @@ % % (c) The GRASP/AQUA Project, Glasgow University, 1992-1998 % -% $Id: CgMonad.lhs,v 1.36 2002/12/11 15:36:26 simonmar Exp $ +% $Id: CgMonad.lhs,v 1.37 2003/01/07 14:31:20 simonmar Exp $ % \section[CgMonad]{The code generation monad} @@ -206,6 +206,14 @@ type StackUsage = Int, -- realSp: Virtual offset of real stack pointer Int) -- hwSp: Highest value ever taken by virtSp +-- ToDo (SDM, 7 Jan 2003): I'm not sure that the distinction between +-- Free and NonPointer in the free list is needed any more. It used +-- to be needed because we constructed bitmaps from the free list, but +-- now we construct bitmaps by finding all the live pointer bindings +-- instead. Non-pointer stack slots (i.e. saved cost centres) can +-- just be removed from the free list instead of being recorded as a +-- NonPointer. + type HeapUsage = (HeapOffset, -- virtHp: Virtual offset of highest-allocated word HeapOffset) -- realHp: Virtual offset of real heap ptr |