dph-classes-vseg-fast fails: Vectorisation error

cd ./dph/classes && '/home/ian/ghc/git/ghc/inplace/bin/ghc-stage2' -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output -no-user-package-conf -rtsopts  -fno-ghci-history --make -o dph-classes-vseg-fast Main  -O -fno-enable-rewrite-rules -package dph-lifted-vseg  >dph-classes-vseg-fast.comp.stderr 2>&1
Compile failed (status 256) errors were:
[1 of 2] Compiling DefsVect         ( DefsVect.hs, DefsVect.o )
*** Vectorisation error ***
    Can't vectorise expression (vectExpr) GHC.Classes.== @ a $dEq x x

Trac metadata

Trac field	Value
Version	7.5
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Data Parallel Haskell
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