X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Fmain%2FDriverPhases.hs;h=2efe293bd63cfde7e3a882dd3ed1259c6e5f7373;hb=70b6c54b3c140d96b69287f8f400f88a0b7e9c18;hp=08715628e57490b85fde9e7b151801e3cca90147;hpb=3b9b4df7ea723ad6c3c1974c148ccc81f9e67270;p=ghc-hetmet.git

diff --git a/ghc/compiler/main/DriverPhases.hs b/ghc/compiler/main/DriverPhases.hs
index 0871562..2efe293 100644
--- a/ghc/compiler/main/DriverPhases.hs
+++ b/ghc/compiler/main/DriverPhases.hs
@@ -1,5 +1,5 @@
 -----------------------------------------------------------------------------
--- $Id: DriverPhases.hs,v 1.21 2002/07/05 20:30:38 sof Exp $
+-- $Id: DriverPhases.hs,v 1.25 2003/06/04 15:47:59 simonmar Exp $
 --
 -- GHC Driver
 --
@@ -11,12 +11,12 @@
 
 module DriverPhases (
    Phase(..),
+   happensBefore,
    startPhase,		-- :: String -> Phase
    phaseInputExt, 	-- :: Phase -> String
 
    haskellish_file, haskellish_suffix,
    haskellish_src_file, haskellish_src_suffix,
-   hsbootish_file, hsbootish_suffix,
    objish_file, objish_suffix,
    cish_file, cish_suffix,
    isExtCore_file, extcoreish_suffix,
@@ -41,12 +41,10 @@ import DriverUtil
 -}
 
 data Phase 
-	= MkDependHS	-- haskell dependency generation
-	| Unlit
+	= Unlit
 	| Cpp
 	| HsPp
 	| Hsc
-	| HsBoot
 	| Cc
 	| HCc		-- Haskellised C (as opposed to vanilla C) compilation
 	| Mangle	-- assembly mangling, now done by a separate script.
@@ -60,6 +58,17 @@ data Phase
 #endif
   deriving (Eq, Show)
 
+-- Partial ordering on phases: we want to know which phases will occur before 
+-- which others.  This is used for sanity checking, to ensure that the
+-- pipeline will stop at some point (see DriverPipeline.runPipeline).
+x `happensBefore` y 
+	| x `elem` haskell_pipe = y `elem` tail (dropWhile (/= x) haskell_pipe)
+	| x `elem` c_pipe       = y `elem` tail (dropWhile (/= x) c_pipe)
+	| otherwise = False
+
+haskell_pipe = [Unlit,Cpp,HsPp,Hsc,HCc,Mangle,As,Ln]
+c_pipe       = [Cc,As,Ln]
+
 -- the first compilation phase for a given file is determined
 -- by its suffix.
 startPhase "lhs"   = Unlit
@@ -67,7 +76,6 @@ startPhase "hs"    = Cpp
 startPhase "hscpp" = HsPp
 startPhase "hspp"  = Hsc
 startPhase "hcr"   = Hsc
-startPhase "hs-boot" = HsBoot
 startPhase "hc"    = HCc
 startPhase "c"     = Cc
 startPhase "cpp"   = Cc
@@ -93,8 +101,6 @@ phaseInputExt SplitMangle = "split_s"	-- not really generated
 phaseInputExt As          = "s"
 phaseInputExt SplitAs     = "split_s"   -- not really generated
 phaseInputExt Ln          = "o"
-phaseInputExt MkDependHS  = "dep"
-phaseInputExt HsBoot      = "hs-boot"
 #ifdef ILX
 phaseInputExt Ilx2Il      = "ilx"
 phaseInputExt Ilasm       = "il"
@@ -103,9 +109,10 @@ phaseInputExt Ilasm       = "il"
 haskellish_suffix     = (`elem` [ "hs", "lhs", "hspp", "hscpp", "hcr", "hc", "raw_s" ])
 haskellish_src_suffix = (`elem` [ "hs", "lhs", "hspp", "hscpp", "hcr"])
 cish_suffix           = (`elem` [ "c", "cpp", "C", "cc", "cxx", "s", "S" ])
-hsbootish_suffix      = (`elem` [ "hs-boot" ])
 extcoreish_suffix     = (`elem` [ "hcr" ])
 
+-- Use the appropriate suffix for the system on which 
+-- the GHC-compiled code will run
 #if mingw32_TARGET_OS || cygwin32_TARGET_OS
 objish_suffix     = (`elem` [ "o", "O", "obj", "OBJ" ])
 #else
@@ -115,10 +122,8 @@ objish_suffix     = (`elem` [ "o" ])
 haskellish_file     = haskellish_suffix     . getFileSuffix
 haskellish_src_file = haskellish_src_suffix . getFileSuffix
 cish_file           = cish_suffix           . getFileSuffix
-objish_file         = objish_suffix         . getFileSuffix
-hsbootish_file      = hsbootish_suffix      . getFileSuffix
-
 isExtCore_file      = extcoreish_suffix     . getFileSuffix
+objish_file         = objish_suffix         . getFileSuffix
 
 isSourceFile :: FilePath -> Bool
 isSourceFile   f    =