Haskell Program Coverage

This large checkin is the new ghc version of Haskell
Program Coverage, an expression-level coverage tool for Haskell.

Parts:

 - Hpc.[ch] - small runtime support for Hpc; reading/writing *.tix files.
 - Coverage.lhs - Annotates the HsSyn with coverage tickboxes.
  - New Note's in Core,
      - TickBox      -- ticked on entry to sub-expression
      - BinaryTickBox  -- ticked on exit to sub-expression, depending
	       	     -- on the boolean result.

  - New Stg level TickBox (no BinaryTickBoxes, though) 

You can run the coverage tool with -fhpc at compile time. 
Main must be compiled with -fhpc. 
				      

1 files changed, 7 insertions, 0 deletions

diff --git a/compiler/simplCore/FloatIn.lhs b/compiler/simplCore/FloatIn.lhs
index e32a8ea160..b80a8e0b2a 100644
--- a/compiler/simplCore/FloatIn.lhs
+++ b/compiler/simplCore/FloatIn.lhs
@@ -214,6 +214,13 @@ fiExpr to_drop (_, AnnNote InlineMe expr)
   = 	-- Ditto... don't float anything into an INLINE expression
     mkCoLets' to_drop (Note InlineMe (fiExpr [] expr))
 
+fiExpr to_drop (_, AnnNote note@(TickBox {}) expr)
+  =    -- Wimp out for now
+    mkCoLets' to_drop (Note note (fiExpr [] expr))
+fiExpr to_drop (_, AnnNote note@(BinaryTickBox {}) expr)
+  =    -- Wimp out for now
+    mkCoLets' to_drop (Note note (fiExpr [] expr))
+
 fiExpr to_drop (_, AnnNote note@(CoreNote _) expr)
   = Note note (fiExpr to_drop expr)
 \end{code}