Commit b534f42b authored by Simon Marlow's avatar Simon Marlow
Browse files

Make lint check for undefined variables in Cmm

parent 0b75e456
......@@ -13,6 +13,7 @@ module CmmLint (
import Hoopl
import Cmm
import CmmUtils
import CmmLive
import PprCmm ()
import BlockId
import FastString
......@@ -53,7 +54,10 @@ lintCmmDecl (CmmData {})
lintCmmGraph :: CmmGraph -> CmmLint ()
lintCmmGraph g = mapM_ (lintCmmBlock labels) blocks
lintCmmGraph g = cmmLiveness g `seq` mapM_ (lintCmmBlock labels) blocks
-- cmmLiveness throws an error if there are registers
-- live on entry to the graph (i.e. undefined
-- variables)
blocks = toBlockList g
labels = setFromList (map entryLabel blocks)
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