[Haskell-cafe] Strange message from GHC

[Chris Smith]

I'm running into this in some code I wrote.  What does it mean?  It says 
to look at -fspec-constr-count, but that flag doesn't seem to be in the 
GHC documentation.

This isn't critical; the code still seems to work fine.  It just makes 
the build uglier.

Thanks.  Message below.


SpecConstr: too many specialisations for one function (see -fspec-constr-
count):
    Function: main:Expr.simplifyTerm{v rqC} [lid]
    Specialisations: [([sc_s2wb{v} [lid], sc_s2wc{v} [lid],
                        sc_s2wd{v} [lid], sc_s2we{v} [lid], sc_s2wf{v} 
[lid],
                        sc_s2wg{v} [lid]],
                       [main:Expr.Graph{v r51} [gid]
                          sc_s2wg{v} [lid]
                          sc_s2wf{v} [lid]
                          sc_s2we{v} [lid]
                          sc_s2wd{v} [lid],
                        base:GHC.Base.:{(w) v 65} [gid]
                          @ main:Expr.Gen{tc r53}
                          (main:Expr.Edge{v r4Q} [gid] sc_s2wc{v} [lid])
                          sc_s2wb{v} [lid]]),
                      ([sc_s2wh{v} [lid], sc_s2wi{v} [lid], sc_s2wj{v} 
[lid],
                        sc_s2wk{v} [lid], sc_s2wl{v} [lid], sc_s2wm{v} 
[lid]],
                       [main:Expr.Graph{v r51} [gid]
                          sc_s2wm{v} [lid]
                          sc_s2wl{v} [lid]
                          sc_s2wk{v} [lid]
                          sc_s2wj{v} [lid],
                        base:GHC.Base.:{(w) v 65} [gid]
                          @ main:Expr.Gen{tc r53}
                          (main:Expr.Ghost{v r4P} [gid] sc_s2wi{v} [lid])
                          sc_s2wh{v} [lid]]),
                      ([sc_s2wR{v} [lid], sc_s2wS{v} [lid], sc_s2wT{v} 
[lid]],
                       [sc_s2wT{v} [lid],
                        base:GHC.Base.:{(w) v 65} [gid]
                          @ main:Expr.Gen{tc r53}
                          (main:Expr.Vertex{v r4R} [gid] sc_s2wS{v} [lid])
                          sc_s2wR{v} [lid]]),
                      ([sc_s2wU{v} [lid], sc_s2wV{v} [lid], sc_s2wW{v} 
[lid]],
                       [sc_s2wW{v} [lid],
                        base:GHC.Base.:{(w) v 65} [gid]
                          @ main:Expr.Gen{tc r53}
                          (main:Expr.Vertex{v r4R} [gid]
                             (base:GHC.Base.I#{(w) v 6d} [gid] sc_s2wV{v} 
[lid]))
                          sc_s2wU{v} [lid]])]